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Ralph Yang | Faculty

Ralph Yang

Dwight F. Benton Professor of Chemical Engineering

3110 H.H. Dow
yang@umich.edu
(734) 936-0771

 

 

Short Bio

EDUCATION

Yale University
PhD CHE '71
MA CHE '68

National Taiwan University
BS CHE '64

SOCIETY MEMBERSHIPS

  • American Institute of Chemical Engineers, (2002–present)
  • American Institute of Chemical Engineers, Awards Committee Member, (1996-2001)
  • American Institute of Chemical Engineers, Director, Separations Division, (1992-1995)
  • American Carbon Society, Advisory Board Member, (1985-1991)
  • International Adsorption Society, Director, (1998-2004)
  • Adsorption - Journal of IAS, Advisory Board Member, (1993-present)
  • Adsorption Science and Technology, Adv. Bd. Member, (1986-present)
  • Industrial & Engineering Chemistry Research, Adv. Bd., (1991-1993)
  • Separation & Purification Reviews, Adv. Bd. Member, (1997-present)
  • Applied Catalysis B - Environmental, Editorial Board, (2000-2004)
  • Applied Catalysis A - General, Editorial Board, (2004-2007)
  • Carbon, Honorary Editorial Advisory Board, (2001-present)
  • Frontiers of Environmental Science & Engineering, Editorial Advisory Board
    (2008-present)
  • Chemical Engineering Science, International Advisory Panel, (2012- present)
  • Journal of Environmental Sciences, Editorial Advisory Board (2013-present)

POSITIONS HELD AT U-M

  • Dwight F. Benton Professor, Department of Chemical Engineering, University of Michigan, (2002-present)
  • Professor, Department of Chemical Engineering, University of Michigan, (1995-present)
  • Chairman, Department of Chemical Engineering, University of Michigan, (1995-2000)

OTHER APPOINTMENTS

  • Praxair Professor of Chemical Engineering, State University of New York at Buffalo, (1993-1995)
  • Chairman, Department of Chemical Engineering, State University of New York at Buffalo, (1989-1995)
  • National Science Foundation, Program Director, Separation and Purification Processes, CTS Division, (1987-1988)
  • Professor, Department of Chemical Engineering, State University of New York at Buffalo, (1982-1995)
  • Associate Professor, Department of Chemical Engineering, State University of New York at Buffalo, (1978-1982)
  • Chemical Engineer and Group Leader, Fossil Energy Science Group, Brookhaven National Laboratory, Upton, NY, (1974-1978)
  • Scientist, Phys. Chem. Div., Aluminum Company of America, Alcoa Center, PA, (1973-1974)
  • Research Fellow, Argonne National Laboratory, Argonne IL, (1972-1973)
  • Research Associate, Department of Chemistry, New York University, (1971-1972)

Research

Adsorption. This research is focused on gas adsorption for the purpose of separation and purification. All fundamental aspects of adsorption are being studied: 1) Gas-solid equilibria, 2) Diffusion (pore diffusion, surface diffusion, diffusion in zeolites), 3) Dynamics in fixed-bed adsorbers, 4) Cyclic adsorption/desorption processes with particular interest in pressure swing adsorption, and 5) the hysteresis phenomena. We are also exploring field-assisted adsorption and desorption. We have had success in ultrasound assisted desorption of strongly adsorbed molecules, such as phenols, on activated carbon and resins. We have found that ultrasound could replace chemical regeneration.

New Adsorbent Materials. We are exploring the possibility of synthesizing new sorbents by exploiting weak and reversible chemical bonds, such as pi-complexation. The pi-complexion is used for olefin-paraffin separations, e.g., diene/olefin and aromatic/aliphatic separations. and other difficult hydrocarbon separations. Immobilized cyanocobaltates are being developed for O2-selective adsorption. Zeolites containing mixed cations including Ag are being studied as superior N2-selective sorbents. An understanding for the bonding as well as design of the sorbents is being obtained through molecular orbital calculations. A methodology has been developed for sorbent design by applying Molecular Orbital (MO) theory. From MO calculations, for any given targeted adsorbate, we can quickly determine the best cation and anion to be placed on the surface.

We are developing new sorbent materials which are tailored to provide desired diffusivities for different gas molecules. With these sorbents, it will be possible to accomplish separations of gas mixtures by kinetic separation. Pillared clay is one of these materials that is being studied. Amines grafted on silica or MCM-48 are being explored as sorbents for acid gases. This is our first attempt to replace solvent extraction with dry adsorption by taking the approach of immobilizing extractants on solid substrates.

We have been studying new sorbents for the purpose of removing sulfur compounds from gasoline and diesel fuels. The current level of sulfur in gasoline and diesel is about 350 ppm, which must be lowered to below 30 ppm for gasoline and 15 ppm for diesel in 2006 under the federal law. Adsorption appears to be the most economical way (and possibly the only feasible way) to accomplish this difficult task. We have already shown that our pi-complexation sorbents are substantially better than all commercially available sorbents for the adsorption of low concentrations of thiophene from benzene. A major effort in developing this type of sorbents is on-going in our laboratory.

For hydrogen storage materials our approach is to use hydrogen spillover via an added catalyst in nanostructured carbons. We are working on sorbents that will meet the DOE target of 6.5% wt% storage at room temperature, and also to obtain a basic understanding of the hydrogen spillover mechanism.

Environmental Catalysis. The selective catalytic reduction (SCR) of NO with ammonia is a process that has been commercialized in the U.S. for power plant emission control. We are studying new catalysts for this reaction. We have had success with pillared clays and ion-exchanged pillared clays for these applications. The Fe(3+) and Cu(2+) ion-exchanged pillared clays are particularly active for these reactions. A U.S. patent has been granted for this work. Other active new catalysts for this reaction developed in our laboratory are: Fe-ZSM-5 and Fe-MOR.

We have been developing catalysts for low temperature SCR as well as that for low temperature selective catalytic oxidation of ammonia. Most active catalysts have been developed for both applications.

Gas-Carbon Reactions. Research is being conducted on the kinetics and mechanisms of gas-carbon reactions, both uncatalyzed and catalyzed. These reactions are important in coal conversion, metallurgy, catalyst regeneration, and a number of chemical processes. We are focusing on the C-NO reaction which is of importance in environmental control. Our approach has been to study rates on well defined active sites of carbon using single crystal graphite. We have been using MO theory to understand the mechanisms of the gas-carbon reactions. A new surface oxygen intermediate was proposed with which a unified mechanism can be applied to all gas-carbon reactions involving oxygen atoms.

Carbon Nanotubes and Hydrogen Storage. We are studying carbon nanotubes and graphite nanofibers (GNF) as unique sorbents. We have already found that multiwall nanotubes are the best selective sorbents for dioxins and also for NO. We are sorting out the controversies on issues of hydrogen storage in carbon nanotubes. We are also developing new nanomaterials for hydrogen storage by a spillover mechanism.

Teaching

Courses Taught at U-M:

  • ChE 343 - Separation Processes
  • ChE 360 - Chemical Engineering Laboratory I
  • ChE 490 - Advanced Directed Study
  • ChE 543 - Advanced Separation Processes
  • ChE 697 - Adsorption Engineering

Courses Taught at SUNY Buffalo:

  • Undergraduate: Fluid Mechanics, Chemical Reaction Engineering, Chemical Engineering Lab, Plant Design
  • Graduate: Chemical Reaction Engineering, Environmental Engineering

Honors & Awards

  • Chinese Academy of Engineering, 2015
  • National Academy of Inventors, 2013
  • DOE Hydrogen Program Special Recognition Award, 2010
    U.S. Department of Energy
  • Distinguished Alumni Award, 2010
    National Taiwan University
  • Academia Sinica (Taiwan), 2008
  • DOE Hydrogen R&D Award, 2008
    U.S. Department of Energy
  • "One of 30 Authors of Groundbreaking Chemical Engineering Books," AIChE Centennial Celebration, 2008
    American Institute of Chemical Engineers
  • Distinguished Faculty Achievement Award, 2007
    University of Michigan
  • National Academy of Engineering, 2005
  • Distinguished Alumni Award, 2005
    National Taiwan University, Chemical Engineering Department
  • ACS Award in Separation Science & Technology, 2003
    American Chemical Society
  • Award for Advancement of Basic and Applied Science, 2001
    Yale University Science & Engineering Association
  • SGL Carbon Award (triennial) for “Most Significant Overall Contributions to Science or Technology of Carbon Materials," 1999
    American Carbon Society
  • Clarence Gerhold Award, Separations Division Award, 1997
    American Institute of Chemical Engineers
  • Institute Award for Excellence in Industrial Gases Technology, 1996
    American Institute of Chemical Engineers
  • William H. Walker Award for "Excellence in Contributions to Chemical Engineering Literature," 1991
    American Institute of Chemical Engineers

Selected Publications

Professor Yang has published two books, over 400 refereed journal articles and holds 33 U.S. patents.

Books

Gas Separation by Adsorption Processes, Butterworth, Boston, 1987. Translated into Russian, Chinese, and Korean. Paperback edition, Imperial College Press, 1997. ("One of 30 Groundbreaking Chemical Engineering Books," AIChE Centennial Celebration, 2008)

Adsorbents: Fundamentals and Applications, Wiley, New York, 2003. Korean Translation, 2006; Chinese Translation, 2008.

New Direction in Sorption Technology, G.E. Keller and R.T Yang, Ed., Butterworth, Boston, 1989.

Journal Articles

411.  M. H. Yuan, L. F. Wang and R. T. Yang, “Glow Discharge Plasma-Assisted Template Removal of SBA-15 at Ambient Temperature for High Surface area, High Silanol Density and Enhanced CO2 Adsorption Capacity,” Langmuir, 30, 8124 (2014).

410.   L. F. Wang, H. Chen, M. H. Yuan, S. Rivillon, E. H. Klingenberg, J. X. Li and R. T. Yang, “Selective Catalytic Reduction of Nitric Oxide by Hydrogen over Zn-ZSM and Pd and Pd/Ru Based Catalysts,” Appl. Catal. B., 152, 162-171 (2014).

409.  L. F. Wang and R. T. Yang,  “New Nanostructured Sorbents for Desulfurization of Natural Gas,” Front. Chem. Sci. Eng., 8(1), 8-19 (2014).

408.  L. F. Wang, A. J. Lachawiec, Jr. and R. T. Yang, “Nanostructured Adsorbents for Hydrogen Storage at Ambient Temperature: High-Pressure Measurements and  Factors Influencing Hydrogen Spillover,” RSC Advances, 3, 23935 (2013).

407.  H. Chen, L. F. Wang, J. Yang and R. T. Yang, “Investigation on Hydrogenation of Metal Organic Frameworks HKUST-1, MIL-53 and ZIF-8 by Hydrogen Spillover,” J. Phys. Chem. C., 117, 7565 (2013).

406. G. S. Qi, L. F. Wang and R. T. Yang, “New Catalysts for NO SCR by Ammonia and by Hydrogen” Chapter in “Urea-SCR Technology for deNOx Aftertreatment of Diesel Exhausts,” Ed. I. Nova and E. Tronconi, Springer, New York, 2013.

405. L. F. Wang, R. T. Yang and J. Yang, “Nanostructured Adsorbents for Hydrogen Storage,” Chapter 8 in New and Future Developments in Catalysis: Batteries, Hydrogen Storage and Fuel Cells, S. L. Suib (Ed.), Elsevier, Amsterdam (2013).

404. L. F. Wang, R. T. Yang and C. L. Sun, “Graphene and Other Carbon Sorbents for Selective Adsorption of Thiophene from Liquid Fuel,” AIChE Journal, 59, 29 (2013).

403. Q. Ye, L. F. Wang and R. T. Yang, “Activity, propene poisoning resistance and hydrothermal stability of copper exchanged chabazite-type zeolite catalysts for SCR of NO with ammonia in comparison to Cu-ZSM-5,” Appl. Catal. A, 427, 24 (2012).

402. L. F. Wang and R. T. Yang, “Significantly Increased CO2 Adsorption Performance of Nanostructured Templated Carbon by Tuning Surface Area and Nitrogen Doping,” J. Phys. Chem. C., 116, 1099 (2012).

401. L. F. Wang, B. D. Sun, F. H. Yang and R. T. Yang, “ Effects of Aromatics on Desulfurization of Liquid Fuels by π-complexation and Carbon Adsorbents,” Chem. Eng. Sci., 73, 208 (2012).

400. L. F. Wang and R. T. Yang, “Molecular Hydrogen and Spiltover Hydrogen Storage on High Surface Area Carbon Sorbents,” Carbon (Thrower Festschrift), 50, 2679 (2012).

399. L. F. Wang and R. T. Yang, “Increasing Selective CO2 Adsorption on Amine-grafted SBA-15 by Increasing Silanol Density,” J. Phys. Chem. C, 115, 21264 (2011).

398. N. R. Stuckert and R. T. Yang, “Atmospheric CO2 Capture and Simultaneous Concentration using Zeolites and Amine-grafted SBA-15,” Environ. Sci. Tech. 45, 10257 (2011).

397. J. H. Li, H. Z. Chang, L. Ma, J. M. Hao and R. T. Yang, “Low-temperature Selective Catalytic Reduction of NO with NH3 over Metal Oxide and Zeolite Catalysts – A Review,” Catal. Today, 175(1), 147 (2011).

396. L. F. Wang, N. R. Stuckert and R. T. Yang, “Unique Hydrogen Adsorption Properties of Graphene,” AIChE Journal, 57, 2902 (2011)

395. L. F. Wang and R. T. Yang, “Hydrogen Storage on Carbon-based Adsorbents and Storage at Ambient Temperature by Hydrogen Spillover,” Catalysis Reviews – Sci. & Eng., 54(4), 411-461 (2010).

394. N. R. Stuckert, L. F. Wang and R. T. Yang, “Characteristics of Hydrogen Storage by Spillover on Pt-doped Carbon and Catalyst-Bridged Metal Organic Framework,” Langmuir, 26, 11963 (2010).

393. Z. Wang and R. T. Yang, "Enhanced Hydrogen Storage on Pt-Doped Carbon by Plasma Reduction,” J. Phys. Chem. C. , 114, 5956 (2010).

392. H. Chen and R. T. Yang, “Catalytic Effects of TiF3 on Hydrogen Spillover on Pt/Carbon for Hydrogen Storage,” Langmuir, 26, 15394 (2010).

391. L. F. Wang and R. T. Yang, “Hydrogen Storage Properties of Low-Silica Type X Zeolites" Ind. Eng. Chem. Res., 49, 3634 (2010).

390. Z. Wang, F. H. Yang and R. T. Yang, “Enhanced Hydrogen Spillover on Carbon Surfaces Modified by Oxygen Plasma,” J. Phys. Chem. C. 114, 1601 (2010).

389. J. H. Li, R. H. Zhu, Y. S. Cheng, C. K. Lambert and R. T. Yang, “Mechanism of Propene Poisoning on Fe-ZSM-5 for Selective Catalytic Reduction of NOx with Ammonia,” Env. Sci. Tech., 44, 1799 (2010).

388. L. F. Wang and R. T. Yang, “Hydrogen Storage Properties of N-doped Microporous Carbon” J. Phys. Chem. C., 113, 21883 (2009).

387. A. J. Lachawiec, Jr. and R. T. Yang, “Reverse Spillover of Hydrogen on Carbon-Based Nanomaterials: Evidence of Recombination Using Isotopic Exchange,” J. Phys. Chem. C, 113, 13933 (2009).

386. H. Chen, Y. H. Wang, F. H. Yang and R. T. Yang, “Desulfurization of High-Sulfur Jet Fuel by Mesoporous p-Complexation Adsorbents, “ Chem. Eng. Sci., 64, 5240 (2009).

385. J. H. Li, W. H. Goh, X. C. Yang and R. T. Yang, “Nonthermal Plasma-Assisted Catalytic NOx Storage over Pt/Ba/Al2O3 at Low Temperatures,” Appl. Catal. B: Environmental, 90, 360 (2009).

384. C. H. He, Y. H. Wang, Y. S. Cheng, C. K. Lambert and R. T. Yang, “Activity, stability and hydrocarbon deactivation of Fe/Beta catalyst for SCR of NO with ammonia,” Appl. Catal. A., 368, 121 (2009)

383. R. T. Yang and Y. H. Wang, “Catalyzed Hydrogen Spillover for Hydrogen Storage,” J. Am. Chem. Soc., 131, 4224 (2009).

382. J. H. Li, W. Li, L. S. Wei, R. T. Yang, “Novel Y2O3 Doped MnOx Binary Metal Oxides for NOx Storage at Low Temperature in Lean Burn Condition,” Catal. Lett., 129, 104 (2009).

381. L. F. Wang, F. H. Yang, R. T. Yang and M. A. Miller, “Effect of Surface Oxygen Groups in Carbons on Hydrogen Storage by Spillover,” Ind. Eng. Chem. Res.,48, 2920 (2009).

380. L. F. Wang, F. H. Yang and R. T. Yang, “Hydrogen Storage Properties of B- and N-Doped Microporous Carbon,” AIChE J., 55, 1823 (2009).

379. Y. H. Wang, R. T. Yang and J. M. Heinzel, “Desulfurization of Jet Fuel JP-5 Light Fraction by MCM-41 and SBA-15 Supported Cuprous Oxide for Fuel Cell Applications,” Ind. Eng. Chem. Res., 48, 142 (2009).

378. Y. H. Wang and R. T. Yang, “Increased Hydrogen Spillover by Gaseous Impurity Benson-Boudart Method for Dispersion Revisited,” J. Catalysis, 260, 198 (2008).

377. L. F. Wang and R. T. Yang, “Hydrogen Storage Properties of Carbons Doped with Ruthenium, Platinum and Nickel Nanoparticles,” J. Phys. Chem. C., 112, 12486 (2008).

376. A.J. Lachawiec, Jr., T. R. DiRaimondo, and R. T. Yang, “A Robust Volumetric Apparatus and Method for Measuring High-Pressure Hydrogen Storage Properties of Nanostructured Materials,” Rev. Sci. Instr. , 79, 063906 (2008).

375. A. J. Lachawiec, Jr. and R. T. Yang, “Isotope Tracer Study of Hydrogen Spillover on Carbon-Based Adsorbents for Hydrogen Storage,” Langmuir, 24, 6159 (2008).

374. L. F. Wang and R. T. Yang, “New Sorbents for Hydrogen Storage by Hydrogen Spillover – A Review,” Energy & Environmental Science (Roy. Soc. Chem. Cambridge), Invited Featured Review. 1, 268 (2008).

373. Y. W. Li and R. T. Yang, “Hydrogen Storage in Metal-Organic Frameworks and a Covalent-Organic Framework,” AIChE Journal, 54, 269 (2008).

372. Y. H. Wang, R. T. Yang and J. M. Heinzel, “Desulfurization of Jet Fuel by π-Complexation Adsorption with Metal Halides Supported on MCM-41 and SBA-15 Mesoporous Materials,” Chem. Eng. Sci., 63, 356 (2008).

371, D. Crespo, G. Qi, Y. Wang, F. H. Yang and R. T. Yang, “Superior Sorbent for Natural Gas Desulfurization,” Ind. Eng. Chem. Res., 47, 1238 (2008).

370. G. Qi, Y. H. Wang and R. T. Yang, “Selective Catalytic Reduction of Nitric Oxide with Ammonia over ZSM-5 Based Catalysts for Diesel Engine Applications,” Catal. Lett., 121, 111 (2008).

369. Y. Li and R. T. Yang, “Gas Adsorption and Storage in Metal-Organic Framework MOF-177,” Langmuir, 23, 12937 (2007).

368. Y. Li, R. T. Yang, C. J. Liu and Z. Wang, “Hydrogen Storage on Carbon Doped with Platinum Nanoparticles Using Plasma Reduction,” Ind. Eng. Chem. Res., 46, 8277 (2007).

367. Y. W. Li and R. T. Yang, “Hydrogen Storage on Platinum Nanoparticles Doped on Super-Activated Carbon, J. Phys. Chem. C. 111, 11086 (2007).

366. L. P. Ma and R. T. Yang, “Heats of Adsorption from Liquid Solutions and from Pure Vapor Phase: Adsorption of Thiophenic Compounds on NaY and 13X Zeolites,” Ind. Eng. Chem. Res. 46, 4874 (2007).

365. Y. H. Wang and R. T. Yang, “Desulfurization of Liquid Fuels by Adsorption on Carbon-based Sorbents and Ultrasound-Assisted Sorbent Regeneration,” Langmuir, 23, 3825 (2007).

364. L. P. Ma and R. T. Yang, “Selective Adsorption of Sulfur Compounds: Isotherms, Heats and Relationship between Adsorption from Vapor and Liquid Solution,” Ind. Eng. Chem. Res., 46, 2760 (2007).

363. Y. W. Li, F. H. Yang and R. T. Yang, “Kinetics and Mechanistic Model for Hydrogen Spillover on Bridged Metal-Organic Frameworks,” J. Phys. Chem. C, 111, 3405 (2007).

362. Y. H. Wang, F. H. Yang, R. T. Yang, J. M. Heinzel and A. D. Nickens, “Desulfurization of High-Sulfur Jet Fuel by π-Complexation with Copper and Palladium Halide Sorbents,” Ind. Eng. Chem. Res., 45, 7649 (2006). .

361. Y. W. Li and R. T. Yang, “Hydrogen Storage in Low Silica Type X Zeolites,” J. Phys. Chem. B, 110, 17175 (2006).

360. Y. W. Li and R. T. Yang, “Hydrogen Storage in Metal-Organic Frameworks by Bridged Hydrogen Spillover,” J. Am. Chem. Soc., 128, 8136 (2006).

359. F. H. Yang, A. J. Lachawiec, Jr. and R. T. Yang, “Adsorption of Spillover Hydrogen Atoms on Single-Wall Carbon nanotubes,” J. Phys. Chem. B., 110, 6236 (2006).

358. Y. W. Li and R. T. Yang, “Significant Enhancement of Hydrogen Storage Capacity in Metal-Organic Frameworks via Spillover,” J. Am. Chem. Soc., 128, 726 (2006).

357. D. Crespo and R. T. Yang, “Adsorption of Organic Vapors on Single-Wall Carbon Nanotubes,” Ind. Eng. Chem. Research, 45, 5524 (2006).

356. A. Jayaraman, F. H. Yang and R. T. Yang, “Effects of Nitrogen Compounds and Polyaromatic Hydrocarbons (PAHs) on Desulfurization of Liquid Fuels by Adsorption via π-Complexation with Cu(I)Y Zeolite,” Energy & Fuels, 20, 909 (2006).

355. G. S. Qi, R. T. Yang and F. C. Rinaldi, “Catalytic Reduction of Nitric Oxide with Hydrogen over Pd Based Catalysts,” Journal of Catalysis, 237, 381 (2006).

354. Y. W. Li, F. H. Yang, G. S. Qi and R. T. Yang, “Effects of Oxygenates and Moisture on Adsorptive Desulfurization of Liquid Fuels with Cu(I)Y Zeolite,” Catalysis Today, 116, 512 (2006).

353. A. J. Lachawiec, Jr., G. S. Qi and R. T. Yang, “Hydrogen Storage in Nanostructured Carbons by Spillover: Bridge Building Enhancement,” Langmuir, 21, 11418 (2005).

352. A. J. Hernandez-Maldonado, F. H. Yang, G. S. Qi and R. T. Yang, “Sulfur and Nitrogen Removal from Transportation Fuels by -Complexation,” J. Chinese Inst. Chem. Eng. (James Wei Festschrift Issue), 37, 1 (2006).

351. R. S. Bai and R. T. Yang, “A Modification of Doong-Yang Model for Gas Mixture Adsorption Using Lewis Relationship,” Langmuir, 21, 8326 (2005).

350. A. J. Hernandez-Maldonado, G. S. Qi and R. T. Yang, “Desulfurization of Commercial Fuels by -Complexation: Monolayer CuCl/-Al2O3,” Appl. Catal. B, 61, 212 (2005).

349. J. H. Park and R. T. Yang, “Prediction of Adsorption Isotherms of Low- Volatile Compounds by Temperature Programmed Desorption: Adsorption of Iodine on Carbon, “ Langmuir, 21, 5055 (2005).

348. G. S. Qi and R. T. Yang, “Selective Catalytic Oxidation (SCO) of Ammonia to Nitrogen over Fe/ZSM-5 Catalysts,” Appl. Catal. A., 287, 25 (2005).

347. A. Jayaraman and R. T. Yang, “Tailored Clinoptilolites for Nitrogen/Methane Separation,” Ind. Eng. Chem. Res. (Dudukovic issue), 44, 5184 (2005).

346. G. S. Qi and R. T. Yang, “Low-temperature SCR of NO with Ammonia over Noble Metal Promoted Fe-ZSM-5 Catalysts,” Catal. Lett., 100, 243 (2005).

345. J. H. Park and R. T. Yang, “A Simple Criterion for Adsorbent Selection for Gas Separation by PSA Processes,” Ind. Eng. Chem. Res., 44, 1914 (2005).

344. G. S. Qi, J. E. Gatt and R. T. Yang, “Selective Catalytic Oxidation (SCO) of Ammonia to Nitrogen over Fe-Exchanged Zeolites Prepared by Sublimation of FeCl3,” J. Catal., 226, 120 (2004).

343. G. S. Qi, R. T. Yang, R. Chang, S. Cardoso and R. A. Smith “Deactivation of Fe- ZSM-5 Catalyst for Selective Catalytic Reduction of NO with NH3: Field Study Results,” Appl. Catal. A., 275, 207 (2004).

342. A. J. Hernandez-Maldonado, R. T. Yang and W. Cannella, “Desulfurization of Commercial Jet Fuel by Adsorption via -Complexation with Vapor Phase Exchanged (VPIE) Cu(I)-Y Zeolites,” Ind. Eng. Chem. Res., 43, 6142 (2004).

341. A. Jayaraman and R. T. Yang, “Stable Oxygen-Selective Sorbents for Air Separation,” Chem. Eng. Sci., 60, 625 (2005).

340. A. J. Hernandez-Maldonado, F. H. Yang, G. Qi and R. T. Yang, “Desulfurization of Transportation Fuels by x-Complexation Sorbents: Cu(I)-, Ni(II)-, and Zn(II)- Zeolites,” Appl. Catal. B., 56, 111 (2005).

339. F. H. Yang, A. J. Hernandez-Maldonado and R. T. Yang, “Selective Adsorption of Organosulfur Compounds from Transportation Fuels by-Complexation,” Separ. Sci. Tech., 39, 1717, (2004).

338. G. S. Qi and R. T. Yang, “A Superior Fe/ZSM-5 Catalyst for Selective Catalytic Reduction (SCR) of Nitric Oxide with Ammonia,” Appl. Catal. B., 60, 13 (2005).

337. A. J. Hernandez-Maldonado and R. T. Yang, “Desulfurization of Diesel Fuels by Adsorption via -Complexation with Vapor Phase Exchanged (VPIE) Cu(I)-Y Zeolites,”J. Amer. Chem. Soc., 126, 992 (2004).

336. A. J. Hernandez-Maldonado and R. T. Yang, “Denitrogenation of Transportation Fuels by Zeolite at Ambient Temperature and Pressure,” Angewan. Chemie. Int. Ed., 43, 1004 (2004).

335. A. J. Hernandez-Maldonado and R. T. Yang, “Desulfurization of Diesel Fuels via π-Complexation with Nickel(II)-Exchanged X- and Y-Zeolites,” Ind. Eng. Chem. Res., 43, 1081 (2004).

334. A. J. Hernandez-Maldonado, S. D. Stamatis, R. T. Yang, A. Z. He and W. Cannella, “New Sorbents for Desulfurization of Diesel Fuels via -Complexation: Layered Beds and Regeneration,” Ind. Eng. Chem. Res., 43, 769 (2004).

333. R. T. Yang, A. J. Hernandez-Maldonado and F. H. Yang, “Desulfurization of Transportation Fuels with Zeolites Under Ambient Conditions,” Science, 301, 79 (2003).

332. G. S. Qi and R. T. Yang, “Characterization and FT-IR Studies of MnOx-CeO2 Catalyst for Low-temperature SCR of NO with NH3,” J. Phys. Chem. B., 108, 15738 (2004).

331. A. J. Hernandez-Maldonado and R. T. Yang, “Desulfurization of Transportation Fuels by Adsorption,” Catalysis Reviews – Sci. & Eng., 46, 111 (2004).

330. A. D. Lueking, R. T. Yang, N. M. Rodriguez and R. T. K. Baker, “Hydrogen Storage in Graphite Nanofibers: Effect of Synthesis Catalyst and Pretreatment Conditions,” Langmuir, 20, 714 (2004).

329. G. S. Qi, R. T. Yang and L. T. Thompson, “Catalytic Reduction of Nitric Oxide with Hydrogen and Carbon Monoxide in the presence of Excess Oxygen by Pd Supported on Pillared Clays,” Appl. Catal. A., 259, 261 (2004).

328. A. J. Hernandez-Maldonado and R. T. Yang, “New Sorbents for Desulfurization by Selective Adsorption via -Complexation: Sulfur Removal from Diesel Fuels,”AIChE Journal, 50. 791 (2004).

327. G. S. Qi, R. T, Yang and R. Chang, “MnOx-CeO2 Mixed Oxides for Selective Catalytic Reduction of NO with NH3 at Low Temperatures,” Appl. Catal. B Environmental, 51, 93 (2004).

326. J. Hernández-Maldonado and R. T. Yang, “Desulfurization of Commercial Liquid Fuels by Selective Adsorption via -Complexation with Cu(I)-Y Zeolite,Ind. Eng. Chem. Res., 42, 3103 (2003).

325. A. Jayaraman, A. Hernandez-Maldonado, R. T. Yang, D. Chinn, C. L. Munson and D. Mohr, “Clinoptilolites for Nitrogen/Methane Separation,” Chem. Eng. Sci., 59, 2407 (2004).

324. A. D. Lueking and R. T. Yang, “Hydrogen Spillover onto Carbon: Inference of Spiltover Hydrogen on Optimization for Hydrogen Storage in Carbon Nanotubes,”Appl. Catal. A, 265, 259 (2004).

323. F. H. Yang and R. T. Yang, “Ab Initio Molecular Orbital Study of the Mechanism of SO2 Oxidation Catalyzed by Carbon,” Carbon, 41, 2149 (2003),

322. G. Qi and R. T. Yang, “Performance and Kinetics Study for Low-temperature SCR of NO With NH3 over Mn-Ce-Ox Catalyst,” J. Catal., 217, 434 (2003).

321. G. Qi and R. T. Yang, “Low-temperature SCR of NO with NH3 over USY-Supported Manganese Oxide Based Catalysts,” Catal. Lett., 87, 67 (2003).

320. R, Bai, J. Deng and R. T. Yang, “Improved Multi-Site Langmuir Model for Mixture Adsorption Using Multi-Region Adsorption Theory,” Langmuir, 19, 2776 (2003).

319. A. J. Hernández-Maldonado and R. T. Yang, “Desulfurization of Liquid Fuels by Adsorption via -Complexation with Cu(I)-Y and Ag-Y Zeolites,” Ind. Eng. Chem. Res., 42, 123 (2003).

Additional Publications

Patents

1. R.T. Yang, U.S. Patent 4,134,737, "Process for Producing High-Purity Carbon for Anodes," assigned to Aluminum Company of America.

2. R.T. Yang and M. Steinberg, U.S. Patent 4,197,285, "Regeneration of Lime from Sulfates for Fluidized-Bed Combustion," assigned to U.S. Department of Energy.

3. R.T. Yang and M. Shen, U.S. Patent 4,191,115, "Carbonaceous Fuel Combustion with Improved Desulfurization," assigned to U.S. Department of Energy.

4. M. Shen and R.T. Yang, U.S. Patent 4,225,572, "Catalytic Iron Oxide for Lime Regeneration in Carbonaceous Fuel Combustion," assigned to U.S. Department of Energy.

5. R.T. Yang and M. Shen, U.S. Patent 4,252,778, "Fuel Gas Desulfurization," assigned to U.S. Department of Energy.

6. R.T. Yang, R. Smol, G. Farber and L.M. Naphtali, U.S. Patent 4,250,015, "Mechanochemical Hydrogenation of Coal," assigned to U.S. Department of Energy.

7. M. Shen and R.T. Yang, U.S. Patent 4,314,980, "Preparation of Reactive Beta-Dicalcium Silicate," assigned to U.S. Department of Energy.

8. R.T. Yang and M. Ghate, U.S. Patent 4,696,680, "Production of Hydrogen from Coal," assigned to U.S. Department of Energy.

9. R.T. Yang, et al., U.S. Patent 5,106,602, "Low-Temperature Catalyst for Reduction of NO," assigned to SUNY at Buffalo and EPRI.

10. R.T. Yang, U.S. Patent 5,248,321, "Flue Gas Cleanup by Adsorption with Polymeric Adsorbents." SUNY at Buffalo.

11. R.T. Yang and J.E. Cichanowicz, U.S. Patent 5,415,850, "Pillared Clays as Catalysts for Selective Catalytic Reduction of NO." SUNY at Buffalo and Electric Power Research Institute.

12. R.T. Yang and N. Chen, U.S. Patent 5,456,892, "NO Decomposition by Heteropoly Compounds." SUNY at Buffalo and ElectricPower research Institute.

13. R. T. Yang and N. Chen, U. S. Patent 5,523,068, "Nitrogen Oxide Decomposition.” SUNY at Buffalo and EPRI.

14. R. T. Yang and K. Krist, U.S. Patent 6,033,461, “Selective Nitrogen Oxides Adsorption from Hot Gas Mixtures and Thermal Release by Adsorbent,” joint between Univ.of Michigan and Gas Research Institute.

15. J. Padin, C. L. Munson and R.T. Yang, “Method for Selective Adsorption of Dienes,” joint between U. Michigan and Chevron. U.S. Patent 6,215,037 (2001).

16. T. Takahashi and R. T. Yang, “Method for Treating Exhaust Gas by gamma- alumina,” U.S. Patent 6,279,491 (August, 2001).

17. L. S. Cheng, J. Padin, S. U. Rege and R. T. Yang, “Process for Purifying Propylene,” U.S. Patent 6,406,521 (June 18, 2002).

18. R.T. Yang, J. Padin and S.U. Rege, “Selective Adsorption of Alkenes Using Supported Metal Compounds,” joint between U. Michigan and Chevron, U.S. Patent 6,423,881 (July 23, 2002).

19. R. T. Yang, R. Q. Long and T. Takahashi, “ Method of Treating Exhaust Gas by Carbon Nanotubes,” U.S. Patent 6,511,527 (January 2003).

20. R.T. Yang, R. Long and K. E. Zammit, “Superior Pillared Clay Catalysts for Selective Catalytic Reduction of Nitrogen Oxides for Power Plant Emission Control,” U.S. Patent 6,521,559 (February, 2003).

21. R.T. Yang and N.D. Hutson, “Lithium Based Zeolites Containing Silver and Copper and Use Thereof for Selective Adsorption,” U.S. Patent 6,780,806. (August 2004).

22. R.T. Yang, J. Padin and S.U. Rege, “Selective Adsorption of Alkenes Using Supported Metal Compounds,” U.S. Patent 6,867,166 (2005).

23. C. L. Munson and R. T. Yang, “Sulfur Resistant Adsorbents,” ChevronTexaco and University of Michigan, U.S. Patent 6,911,569. (June 2005).

24. R. T. Yang, F. H. Yang, A. Takahashi and A. J. Hernandez-Maldonado, “Selective Sorbents for Purification of Hydrocarbons,” U.S. Patent 7,029,574 (April 18, 2006).

25. R. T. Yang, F. H. Yang, A. Takahashi and A. J. Hernandez-Maldonado, “Selective Sorbents for Purification of Hydrocarbons,” U.S. Patent 7,053,256 (May 30, 2006).

26. R. T. Yang, A. Takahashi, F. H. Yang and Arturo J. Hernandez-Maldonado, "Selective Sorbents for Purification of Hydrocarbons," U.S. Patent 7,094,333 (August 22, 2006).

27. R. T. Yang, F. H. Yang, A. J. Hernandez-Maldonado and A. Takahashi, “Selective Sorbents for Purification of Hydrocarbons.” U.S. Patent 7,148,389, December 12, 2006.

28. G. S. Qi, R. T. Yang and F. Rinaldi, “Selective Catalytic Reduction of Nitrogen Oxides with Hydrogen,” US Patent 7,712,308, May 11, 2010.

29. R. T. Yang, Y. Li and A. J. Lachawiec, “Enhancing Hydrogen Spillover and Storage,” US Patent 7,951,749. May 31, 2011.

30. R. T. Yang, Y. H. Wang and L. Amestica, “Natural Gas Desulfurization,” US Patent 8,187,366. May 29, 2012. (also EU 2217683 A1)

31. R. T. Yang, Y. W. Li, G. S. Qi and A. J. Lachawiec, “Chemical Bridges for Enhancing Hydrogen Storage by Spillover and Methods for Forming the Same,” US Patent 8,338,330, on December 25, 2012.

32. R. T. Yang and Y. Wang, “Enhancing Hydrogen Spillover and Storage issued US Patent No. 8,372,369 on 2/12/2013.

33. R.T. Yang and Y. Wang, “Metal Salt Catalysts for Enhancing Hydrogen Spillover,” US Patent 8,426,337,  April 23, 2013.