Yongchun Tang, Director
Email: tang@peer.caltech.edu

Other joint positions
  • Professor, Director, Green Chemical and Environmental Energy Research (GCEE) Institute, Shanghai University
  • Adjunct Professor/Cornell University
  • Adjunct Professor/Geochemistry Institute/Chinese Academy of Science


    • Corporation Consultation for Following Companies
  • Chevron
  • Shell
  • British Petroleum
  • Exxonmobil
  • China Petroleum Corporation (Taiwan)
  • Conocophillips
  • Saudi Aramco
  • ENI-Agip


    • Education
  • PostDoc. Harvard University
  • Ph.D. Chemistry, Ohio University
  • B.S. Chemistry, Shanxi University, China


    • Professional Experiences
  • Director (8/1/00 . Pres.), Power Environmental Energy Research Center, California Institute of Technology
  • Sr. Staff Research Scientist (1988-8/2000), Molecular Modeling Team Leader; Chevron Petroleum Technology Company, La Habra, CA


    • Research Interests
    Dr. Tang's major research interests are applying molecular modeling and experimental simulation techniques for both upstream and downstream technologies. He has pioneered the molecular modeling technique to many fields of organic geochemistry, surface chemistry, reaction kinetics, and other petroleum chemistry fields. Dr. Tang feels that the major technical barrier of molecular modeling for petroleum industry is lack of integration between theory and experiments. So his research group has a strong integration of modeling and experimental efforts. The main research focuses are: (1) modeling both homogeneous and heterogeneous catalysis, (2) geochemical modeling, (3) interfacial phenomenon modeling (liquid/liquid, liquid/solid, and gas/solid, (4) nucleation process, (5) emulsion, and (6) ionic liquid.

    Teaching Experience at California Institute of Technology:
    Taught one quarter of Caltech 121b "Molecular modeling application for geochemistry and petroleum chemical engineers" Provide number of workshops for people in the area of modeling and kinetics.

    Presentation and Invited Talks
  • 2007 Goldschmidt Meeting in Germany, Invited Keynote Talk on Hydrogen Isotope
    http://www.goldschmidt2007.org/theme09.php#T09-S08

  • 2007 International Organic Geochemistry Meeting
    One Plenary Talk : Formation of sulfur and nitrogen cross-linked macromolecules under aqueous conditions (Given by my postdoctoral student Alon Amrani, O18) 3 Oral Presentations:
    (1) Quantitative assessment of gas generation, origin, age and paleo formation temperature in petroleum system (O18)
    (2) Characterization and chemical structure modeling of solid bitumens associated with thermal chemical alteration and thermochemical sulfate reduction (O35)
    (3) Kinetics and mechanisms of hydrocarbon oxidation by thermochemical sulfate reduction (O37)
    http://www.imog2007.org

  • 2007 American Institute of Chemical Engineering (AICHE) meeting in Houston
    Invited presentation by Department of Energy and Internal Panel Review
      1) Using Ionic Liquid to Facilitate Methane to Methanol Convertion
      2) Molecular Modeling of Using Ionic Liquid for Methane to Methanol Convertion
    http://aiche.confex.com/aiche/s07/preliminaryprogram/session_4087.htm

  • 2006 AAPG international, Perth, Australia
    1) Asphaltene and Resin Thermal Degradation
    2) Quantitative Assessment of Gas Generation and Gas Typing in Petroleum Systems
    http://www.aapg.org/perth/tech_program/Technical_Program.pdf

  • AAPG 2005 Invited Talk on Gas Isotope Modeling
    http://aapg.confex.com/aapg/cal2005/techprogram/A96200.htm

  • 2005 Goldschmidt Invited Talk
    A New Genetic Scheme for Natural Gas Formation and Isotopic Evidence for Oil
    http://www.the-conference.com/2005/gold2005/Gold05_Prog_24.pdf

  • 2005 Goldschmidt Invited Talk
    Effect of Aqueous Chemistry on the Thermal Stability of Hydrocarbons in Petroleum Reservoirs
    http://www.the-conference.com/2005/gold2005/Gold05_Prog_25.pdf

  • 2005 American Association of Petroleum Geology Convention
    Integrating Advanced Geochemistry into Basin Modeling: An Additional Dimension for Constraining Model Predictions
    http://www.searchanddiscovery.com/documents/abstracts/2005annual_calgary/index.htm

  • 2005 Invited Speaker and Panel Discussion Session in A China/USA/Japan Joint Chemical Engineering Conference, 2005, 11-13th at Beijing, China
    http://www.che.utoledo.edu/cujche/uploads%5Cprogram.pdf

  • 2004 Petroleum and Environmental Research Forum Meeting
    Novel Method to monitor CO2 with FM spectrometer
    http://www.perf.org/index.php?act=meeting_2004-10_overview

  • Invited Planetary Speaker on China International Organic Geochemistry Meeting in 2000, Xiaman, China

  • Organizer and Chairman for 1998 ACS symposia of Natural Gas Geochemistry, Dallas, TX
    ACS Award for Best Symposium
  • Section Chairman of Molecular Modeling in Gordon Research Conference on Geochemistry, 1998
    http://www.grc.org/programs.aspx?year=1998&program=orgeoche

  • Invited Speaker for 1998 Gordon Research Conference on Geochemistry Division
    Recent Advances of Theory on Kinetics of Isotope Fractionation
    http://www.grc.org/programs.aspx?year=1998&program=orgeoche

  • Invited Planetary Speaker in 1996 AICHE meeting, San Francisco
    Molecular Modeling for Chemical Engineers
    http://www.ecs.umass.edu/che/am3/96session.html#plenary


    • Publications:
    1. Wang, Qinhong, Fang, Xiangdong, Bai, Baojun, Liang, Xiaolin, Shuler, Patrick J, Goddard, William A., III, Tang, Yongchun* Engineering bacteria for production of rhamnolipid as an agent for enhanced oil recovery., BIOTECHNOLOGY AND BIOENGINEERING 98 (4): 842-853 NOV 1 2007

    2. Amrani, Alon, Turner, Jeffrey W., Ma, Qisheng, Tang, Yongchun, Hatcher PG, .Formation of sulfur and nitrogen cross-linked macromolecules under aqueous conditions. GEOCHIMICA ET COSMOCHIMICA ACTA 71 (17): 4141-4160 SEP 1 2007

    3. Zhang, Tongwei, Ellis, Geoffrey S., Wang, Kang-shi, Walters, Clifford C., Kelemen, Simon, Gillaizeau, Bruno, Tang, Yongchun* .Effect of hydrocarbon type on thermochemical sulfate reduction ORGANIC GEOCHEMISTRY 38 (6): 897-910 2007

    4. Ron Hill, Etuan Zhang, Barry Katz and Yongchun Tang* .Modeling of Gas Generation from the Barnett Shale, Fort Worth Basin, Taxass. 2007, AAPG Bulletin, v 91, 4, 501-521

    5. Tongwei Zhang, Geoffrey S. Ellis, Kang-shi Wang, Clifford C. Walters, Simon R. Kelemen, Bruno Gillaizeau, Yongchun Tang*, Effect of Hydrocarbon Type on Thermochemical Sulfate Reduction, Organic Geochemistry, V. 38, 897-910, 2007

    6. Tang, Yongchun*, Ellis, Geoffrey S., Ma, Qisheng .Use of carbon and hydrogen stable isotopic composition to quantitatively assess natural gas generation. GEOCHIMICA ET COSMOCHIMICA ACTA 71 (15): A1001-A1001 Suppl. S, AUG 2007

    7. Z Li, J Cheng, M Haught and Y Tang*, Chem. Commun, 2006, 4617 - 4619
    (This paper is also appeared in science http://www.rsc.org/Publishing/ChemScience/Volume/2006/12/from_methane_to_methanol.asp)

    8. Zhang AH, Ma QS, Wang KS, Liu XC, Shuler P, Tang YC* , .Naphthenic acid removal from crude oil through catalytic decarboxylation on magnesium oxide., APPLIED CATALYSIS A-GENERAL 303 (1): 103-109 APR 18 2006

    9. Xiao, X. M., Xiong, M., Tian, H., Wilkins, R. W. T., Huang, B. J., Tang, Y .Determination of the source area of the Ya13-1 gas pool in the Qiongdongnan Basin, South China Sea. ORGANIC GEOCHEMISTRY 37 (9): 990-1002 2006

    10. Ma QS, Chakraborty D, Faglioni F, Muller RP, Goddard WA, Harris T, Campbell C, Tang YC*, .Alkylation of phenol: A mechanistic view., JOURNAL OF PHYSICAL CHEMISTRY A 110 (6): 2246-2252 FEB 16 2006

    11. Tang YC*, Huang YS, Ellis GS, Wang Y, Kralert PG, Gillaizeau B, Ma QS, Hwang R, .A kinetic model for thermally induced hydrogen and carbon isotope fractionation of individual n-alkanes in crude oil., GEOCHIMICA ET COSMOCHIMICA ACTA 69 (18): 4505-4520 SEP 15 2005

    12. Xiao XM, Zeng QH, Tian H, Wilkins RWT, Tang YC, .Origin and accumulation model of the AK-1 natural gas pool from the Tarim Basin, China., ORGANIC GEOCHEMISTRY 36 (9): 1285-1298 2005

    13. Tang Y*, Schoell M. .A new genetic scheme for natural gas formation and isotopic evidence for oil cracking., Geochimica et Cosmochimica Acta, Volume 69, Issue 10, Supplement 1 , 15 May 2005, Pages 501-550

    14. Tang Y*, Ellis G, Zhang TW .Effect of aqueous chemistry on the thermal stability of hydrocarbons in petroleum reservoirs Source. Geochimica et Cosmochimica Acta [0016-7037] vol:69 iss:10 pg:A559 -A559, 2005

    15. Li XQ, Xiao XM, Tang YC, Xiao ZY, Mi JL, Liu DH, Shen JG, Liu JZ , .The generation and accumulation of natural gas from Yinan 2 gas pool in Kuqa Depression., CHINESE SCIENCE BULLETIN 49: 107-114 Suppl. 1, DEC 2004

    16. Jang, S. S.; Lin, S. T.; Maiti, P. K.; Blanco, M.; Goddard, W. A.; Shuler, P. J., Tang, Y.C. "Molecular Dynamics Study of A Surfactant-Mediated Decane-Water Interface: Effect of Molecular Architecture of Alkyl benzene Sulfonate" J. Phys. Chem. B, 2004, 108(32), 12130-12140.

    17. Wang, K.S.; Wu, C. H.; Creek, J. L.; Shuler, P. J.; Tang Y. C. "Evaluation of Effects of Selected Wax Inhibitors on Wax Appearance and Disappearance Temperatures" Petroleum Science & Technology, 2003, 21(3-4), 359-368.

    18. Hill, R. J.; Tang, Y. C.; Kaplan, I. R. "Insights into Oil Cracking Based on Laboratory Experiments" Organic Geochemistry, 2003, 34, 1651-1672.

    19. Wang, K. S.; Wu, C. H.; Creek, J. L.; Shuler, P. J.; Tang, Y. C. "Evaluation of Effects of Selected Wax Inhibitors on Paraffin Deposition" Petroleum Science & Technology, 2003, 21(3-4), 369-379.

    20. Tang, Y. C.; Huang, Y.; Kralert, P. G.; Gilaizeu, B. and Hwang, R. "Modeling Thermally- Induced Hydrogen and Carbon Isotope Fractionation " Proceedings of the 21st International Meeting on Organic Geochemistry, Krakow, Poland, Sept. 8-12, 2003

    21. Tang, Y. C.; Schoell, M.; Jenden, P. D.; Lewis, G. "Recent Advances in Hydrocarbon Gas Generation Modeling: From Empiric Concepts to First Principle Calculations" Proceedings of the 21st International Meeting on Organic Geochemistry, Krakow, Poland Sept. 8-12, 2003.

    22. Jang, Y. H.; Chang, X. Y.; Blanco, M.; Hwang, S.; Tang, Y. C.; Shuler, P. J.; Goddard, W. A. "The MSXX Force Field for the Barium Sulfate - Water Interface" J. Phys. Chem. B, 2002, 106(38), 9951-9966.

    23. Wu, C. H.; Wang, K. S.; Shuler, P. J.; Tang, Y. C.; Creek, J.; Carlson, R. M; Cheung, S. "Measurement of Wax Deposition in Paraffin Solutions" AIChE Journal, 2002, 48(9), 2107-2110.

    24. Lorant, F.; Behar, F.; Goddard, W. A.; Tang, Y. C. "Ab Initio Investigation of Ethane Dissociation Using Generalized Transition State Theory", J. Phys. Chem. A, 2001, 105(33), 7896-7904.

    25. Gillaizeau, B. and Tang, Y. C. "Reaction Mechanistic Studies for Thermochemical Sulfate Reduction", 20th International Meeting on Organic Geochemistry, 2001, 81.

    26. Zhou, Y.; Cagin, T.; Yamaguchi, E.; Hu, A.; Tang, Y. C.; Goddard, W. A. "Structural and Dynamic Properties of Hexadecane Lubricantsunder Shear Flow in A Confined Geometry", ACS Symposium Series, Solid-Liquid Interface Theory, Edited by Woods Halley, 158-177, 2001.

    27. Lorant, F,; Behar, F.; Vandenbroucke, M.; McKinney, D. E.; Tang, Y. C. "Methane Generation from Methylated Aromatics: Kinetic Study and Carbon Isotope Modeling", Energy & Fuels, 2000, 14(6), 1143-1155.

    28. Sun, Q.; Tang, Y. C.; Gavalas, G. R. "Methane Pyrolysis in A Hot Filament Reactor" Energy & Fuels, 2000, 14(2), 490-494.

    29. Zhou, Y. H.; Jiang, S. Y.; Cagin, T.; Yamaguchi, E. S.; Frazier, R.; Ho, A.; Tang, Y. C. and Goddard, W.A. "Application of the Self-Assembled Monolayer (SAM) Model to Dithiophosphate and Dithiocarbamate Engine Wear Inhibitors" J. Phys. Chem. A, 2000, 104 (11): 2508-2524.

    30. Tang, Y. C.; Perry,J. K.; Jenden, P.D.; Schoell, M. "Mathematical Modeling of Stable Carbon Isotope Ratios in Natural Gases" Geochemica et Cosmochimica Acta, 2000, 64(15): 2673-2687.

    31. Colussi, A. J.; Hoffmann, M. R.; Tang, Y. C. "Conformational Disorder Binds n-Alkanes into Surface Monolayers above The Normal Freezing Pint" Langmuir, 2000, 16(12): 5213-5217.

    32. Wang, K. S.; Resch, P.; Dun, K.; Shuler, P. J.; Tang, Y. C.; Koel, B. E.; Yen, T. F. "Scanning Force Microscopy Study of Etch Pits Formed During Dissolution of A Barite (001) Surface in CDTA and EDTA Solution" Langmuir, 2000, 16(2): 649-655.

    33. Colussi, A. J.; Hoffmann, M. R.; Tang, Y. C. "Dynamic Inhibition of Constrained Crystallization by Mesoscopic Morphology Modifiers" Langmuir, 2000, 16(6): 2405-2408.

    34. Wang, K. S.; Resch, P.; Dun, K.; Shuler, P. J.; Tang, Y. C.; Koel, B. E.; Yen, T. F. "Dissolution of the Barite (001) Surface by The Chelating Agent DTPA as Studied with Non-Contact Atomic Force Microscopy" Colloids and Surfaces A: Physicochemical & Engineering Aspects, 1999,160, 217-227.

    35. Goddard, W. A.; Zhou, Y.; Cagin, T.; Yamaguchi, E. S.; Ho, A.; Tang, Y. C. "Design of New Wear Inhibitors Based on Self-Assembled Monolayer Model and Effects of Wear Inhibitors on Confined Nanoscale Rheology" Abstracts of Papers of 218th ACS Annual Meeting, 61-PETR , Part 2, August 22, 1999.

    36. Wang, K. S.; Resch, R.; Koel, B.; Shuler, P. J.; Tang, Y. C.; Chen, H. and Yen, T.F. "Study of the Dissolution of the barium Sulfate (001) Surface with Hydrochloric Acid by Atomic Force Microscopy", J. Colloid & Interface Science, 1999, 219, 212-215.

    37. Dunn, K.; Daniel, E.; Shuler, P. J.; Chen, H. J.; Tang, Y. C.; and Yen, T. F. "Mechanisms of Surface Precipitation and Dissolution of Barite: A Morphology Approach", J. Colloid and Interface Science, 1999, 214, 427-437.

    38. Behar, F.; Budzinski, H.; Vandenbroucke, M.; Tang, Y. C. "Methane Generation from Oil Cracking: Kinetics of 9-Methyphenanthrene Cracking and Comparison with Other Pure Compounds and Oil Fractions", Energy & Fuels, 1999, 13(2), 471-481.

    39. Michalakos, P. M.; Robinson, R. C.; and Tang, Y. C. "Catalyst Deactivation in Cracking of Hexadecane and Commercial FCC Feed, Studied by Microactivity Test-Multiple Cold Trap (MAT-MCT) Technique", Catalysis Today, 1998, 46, 13-26.

    40. Tang, Y. C. and Jenden, P. D. "Modeling Gas Isotopic Fractionation During Thermogenic Gas Generation", Abstracts of Papers of 215th ACS Annual Meeting Part 1 : 3-GEOC, April 2, 1998.

    41. Vlassopoulos, D.; Macko, S.A.; Schoell, M.; Tang, Y. C.; Zhang, E. "Generation of Nitrogen Gas During Thermal Evolution of Sedimentary Basins - An Experimental Investigation of Isotopic Fractionation Processes", Abstracts of Papers of 215th ACS Annual Meeting Part 1 : 28-GEOC, April 2, 1998.

    42. Lorant, F. B.; and Tang, Y. C. "Generation of Methane from Mature Kerogens - Kinetic and Isotopic Approaches", Abstracts of Papers of 215th ACS Annual Meeting Part 1 : 8-GEOC, April 2, 1998.

    43. Tang, Y. C.; Zhang, E.; Hill, R. and Liu, J. Z. "Modeling Gas Generatios from Coals and Kerogens", Abstracts of Papers of 215th ACS Annual Meeting Part 1 : 10-GEOC, April 2, 1998.

    44. Goldstein, E.; Haught, M. and Tang, Y. C. "Evaluation of Density Functional Theory in the Bond Rupture of Octane", J. Computational Chemistry, 1998, 19(2), 154-167.

    45. Tang, Y. C.; Jenden, P.; Carlson, R. M. and Moldowan, J. M. "Molecular Modeling in Petroleum Geochemistry", 18th International Meeting on Organic Geochemistry, Part I, p. 325, 1997.

    46. Tang, Y. C.; Carlson, R. M.; Jenden, P. and Hix, R. M. "Assessment of Diamondoid Hydrocarbon Maturity Parameters Using Computational Chemistry and Controlled Pyrolysis Experiments", 18th International Meeting on Organic Geochemistry, Part II, p. 573, 1997.

    47. Behar, F.; Tang, Y. C. and Liu, J. Z. "Comparison of Rate Constants for Some Molecular Tracers Generated During Artificial Maturation of Kerogens: Influence of Kerogen Type", Organic Geochemistry, 1997, 26(3-4), 281-287.

    48. Behar, F.; Vandenbroucke, M.; Tang, Y. C; Marquis, F.; Espitalie, J. "Thermal Cracking of Kerogen in Open and Closed System: Determination of Kinetic Parameters and Stoichiometric Coefficients for Oil and Gas Generation", Organic Geochemistry, 1997, 26(5-6), 321-339.

    49. Liu, J. Z.; Tang, Y. C. "Kinetics of Early Methane Generation from Green River Shale" Chinese Science Bulletin, 1998, 43(22), 1908-1912.

    50. Liu, J. Z.; Tang, Y. C. "Experimental Studies on Generation Kinetics of n-Alkanes in Petroleum" Chinese Science Bulletin, 1997, 42(12), 1020-1023.

    51. Liu, J. Z.; Tang, Y. C. "Kinetics of Petroleum Generation Determined from Multiple Cold Trap Pyrolysis-Gas Chromatography" Chinese Science Bulletin, 1997, 42(3), 254-258.

    52. Tang, Y. C.; Zhang, E.; Hill, R.; Liu, J. Z. "Modeling Gas Generation from Coals and Kerogens", 18th International Meeting on Organic Geochemistry, Part I, p. 343, 1997.

    53. Zhang, E.; Tang, Y. C.; Hill, R. "Basin Modeling of Gas Generation and Isotope Fractionation from Cameo Coal, Pieance Basin, NW Co." 18th International Meeting on Organic Geochemistry, Part I, p. 345, 1997.

    54. Schoell, M.; Tang, Y. C.; Zhang, E.; Picha, F.; Rovenskaya, A.; Nemchenko, N. "Natural Gases in Giant Gas Accumulations in NW-Siberia: New Aspects of Their Genesis" 18th International Meeting on Organic Geochemistry, Part I, p. 357, 1997.

    55. Lorant, F.; Behar, F.; Tang, Y. C. "Estimation of Late Generation of Gas from Kerogen in Open and Closed Pyrolysis Systems" 18th International Meeting on Organic Geochemistry, Part II, p. 569, 1997.

    56. Schoell, M.; Dias, R.; Carlson, R. M.; Jenden, P. D.; Tang, Y. C. "Carbon Isotope Systematics in Diamondoid Hydrocarbons" 18th International Meeting on Organic Geochemistry, Part I, p. 55, 1997.

    57. Tang, Y. C.; Jenden, P. D.; Carlson, R.M. and Moldowan, J. M. "Molecular Modeling in Petroleum Geochemistry", 18th International Meeting on Organic Geochemistry, Part I, p. 325, 1997.

    58. Blanco, M.; Tang, Y. C.; Shuler, P. J. and Goddard, W. A. "Activated Complex Theory of Barite Scale Control Processes" Molecular Engineering, 1997, 7: 491-514.

    59. Tang, Y. C.; Carlson, R. M.; Jenden, P. D. and Hix, R. M. "Assessment of Diamondoid Hydrocarbon Maturity Parameters Using Computational Chemistry and Controlled Pyrolysis Experiments" 18th International Meeting on Organic Geochemistry, Part II, p. 573, 1997.

    60. Dunn, K.; Shuler, P. J.; Tang, Y. C.; Yen, T. F. "Chemical Dissolution for Controlling Barium-Sulfate Scale Deposit" Abstracts of Papers of 214th ACS Annual Meeting, Part 2 : p. 31-PETR September 7, 1997.

    61. Ramachandran, S.; Tsai, B. L.; Blanco, M.; Chen, H.; Tang, Y. C. and Goddard, W. A. "Atomistic Simulation of Oleic Imidazolines Bound to Ferric Clusters", J. Phys. Chem. A, 1997, 101(1), 83-89.

    62. Michalakos, P. M.; Robinson, R. C. and Tang, Y. C. "Catalyst Deactivation in Cracking of Hexadecane and Commercial FCC Feed, Studied by Microactivity Test-Multiple Cold Trap (MAT-MCT) Technique", 15th North American Catalysis Society Annual Meeting, p. 29, Chicago, 1997.

    63. Tang, Y. C.; Jenden, P. D.; Nigrini; A.; Teerman, S. C. "Modeling Early Methane Generation in Coal" Energy & Fuels, 1996, 10(3), 659-671.

    64. Jiang, S.; Frazier, R.; Yamaguchi, E.; Blanco, M.; Dasgupta, S.; Zhou, Y. H.; Cagin, T.; Tang, Y. C.; Goddard, W. A. "The SAM Model for Wear Inhibitor Performance of Dithiophosphates on Iron Oxide" J. Phys. Chem. B, 1997, 101(39), 7702-7709.

    65. Ramachandran; S.; Tsai, B. L.; Blanco, M.; Chen, H.; Tang, Y. C. and Goddard, W. A. "The Self-Assembled Monolayer Mechanism for Corrosion Inhibition of Iron by Imidazolines", Langimiur, 1996, 12(26), 6419-6428.

    66. Jiang, S.; Dasgupta, S.; Blanco, M.; Frazier, R.; Yamaguchi, E. S.; Tang, Y. C.; Goddard, W. A. "Structures, Vibrations and Force Fields of Dithiophosphate Wear Inhibitors from Ab Initio Quantum Chemistry" J. Phys. Chem., 1996, 100(39), 15760-15769.

    67. Tomic, A.J.; Behar, F.; Vandenbrouchke, M.; Tang, Y. C. "Artificial Maturation of Monterey Kerogen (Type II-S) in A Closed System and Comparison with Type-II Kerogen - Implications on the Fate of Sulfur" Organic Geochemistry, 1995, 23(7), 647-660.

    68. Tang, Y. C. and Jenden, P. D. "Theoretical Modeling of Carbon and Hydrogen Isotope Fractionation in Natural Gas" Organic Geochemistry, 1995, 1067-1069.

    69. Hill, R. J.; Tang, Y. C.; Kaplan, I. R.; Jenden, P. D. "The Influence of Pressure Effect on Oil the Thermal Cracking of Oil", Energy & Fuel, 1996, 10(4), 873-882.

    70. Tang ,Y. C. and Behar, F. "Rate Constants of n Alkanes Generation from Type II Kerogen in Open and Closed Pyrolysis Systems" Energy & Fuels, 1995, 9(3), 507-512.

    71. Tang, Y. C. and Stauffer, M. "Formation of Pristene, Pristane and Phytane - Kinetic Study by Laboratory Pyrolysis of Monterey Source Rock" Organic Geochemistry, 1995, 23(5), 451-460.

    72. Hill, R. J.; Tang, Y. C.; Jenden, P.D.; Kaplan; I. R. "The Influence of Pressure, Temperature and Time of the Thermal Cracking of Oil As Simulated by Confined Pyrolysis" Abstract of Papers of 209th ACS Annual Meeting, Geoc., p. 62, 1995.

    73. Tang, Y. C.; Zhang, E. "Kinetic Modeling of Thermogenic Methane Formation Through Pyrolysis Experiments" Abstract of Papers of 209th ACS Annual Meeting, Geoc., p. 48, 1995.

    74. Tang, Y. C.; Shuler, P. J.; Chen, H., Jenden, P. D.; Carlson, R.M.; Blanco, M.; Ramachandran, S.; Tsai, B. L.; Perry, J.; Goddard, W. A. "Applications of Molecular Simulations in Petroleum Upstream Technology", Tech. Exchange Meeting (TEM), 1995.

    75. Dasgupta, S.; Tang, Y. C.; Moldowan, J. M.; Carlson, R. M.; Goddard, W. A. "Stabilizing the Boat Conformation of Cyclohexane Rings" J. Am. Chem. Soc., 1995, 117(24), 6532-6534.

    76. Tang, Y. C. and Stauffer, M. "Multiple Cold Trap Pyrolysis Gas Chromatography: A New Technique for Modeling Hydrocarbon Generation" Organic Geochemistry, 1994, 22(3-5), 863-872.

    77. Tang, Y. C. and Stauffer, M. "Development of Multiple Cold Trap Pyrolysis" J. Analytical and Applied Pyrolysis, 1994, 28, 167-174.

    78. Teerman, S. C.; Hwang, R. J.; Tang, Y. C. "Geochemical Evaluation of the Liquid Hydrocarbon Potential of Marginal Source Rocks" IPA 94, p. 457, 1994.

    79. Hill, R. J.; Jenden, P. D.; Tang, Y. C.; Teerman, S. C.; Kaplan, I. R. "Influence of Pressure on Pyrolysis of Coal" ACS Symposium Series 570, Edited by Mukhopadhyay, P. K. and Dow, W. G., pp.161-193, 1994.

    80. Tang, Y.C. and Stauffer, M. "Compositional Modeling of Hydrocarbon Generation" Advances in organic Geochemistry, 1994, 22, 863.

    81. Tang, Y. C.; Blanco, M.; Chung, X.; Goddard, W. A. "Cost Effective Scale and Corrosion Inhibitor for Oil and Gas Production" 1994, 12 29, Annual Report from Molecular Simulation Center, Caltech.

    82. Tang, Y. C.; Gao, G.; Belmer, M.; Goddard, W. A. "Glass Transition Temperature of Amprphous Polyethylene for Molecular Dynamic Simulation:" 1994, 11 5, Annual Report from Molecular Simulation Center, Caltech.

    83. Tang, Y. C.; Gao, G.; Belmer, M.; Goddard, W. A. "Glass Transition Temperature of Amprphous Polystyrene for Molecular Dynamic Simulation:" 1994, 11-7, Annual Report from Molecular Simulation Center, Caltech.

    84. Goddard, W. A.; Melmares, M.; Gao, G.; Dasgupta, S.; Tang, Y. C.; Hammond, W.; Wissinger, R.; White, D.; Adriani, P. "Applications of Atomistic Simulations to Design of Materials" Abstract of Papers of 207th ACS Annual Meeting, Comp., p.103, 1994.

    85. Goddard, W. A.; Lim, K. T.; Melmares, M.; Gao,Y.; Chen, X.; Tang; Y. C. "Simulation and Design of Materials - Applications to Polymers, Ceramics, Semiconductors, and Catalysis" Abstract of Papers of 208th ACS Annual Meeting, Phys., p. 391, 1994.

    86. Hill, R. J.; Jenden, P. D.; Tang, Y. C.; Kaplan, I. R. "Influence of Pressure on Pyrolysis of Coal" Abstract of Papers of 206th ACS Annual Meeting, Geoc., p. 9, 1993.

    87. Tang, Y. C.; Jenden, P. D. and Teerman, S. C. "Modeling of Thermogenic Methane Formation in Low Rank Coals Published Models and Results From Laboratory Pyrolysis of lignite" Proceedings of the 15th Meeting of the European Association of Organic Geochemists, edited by Manning, D., Manchester University Press, p. 329, 1991.

    88. Wine, P. H.; Tang, Y. C.; Thorn, R. P. and Wells, J. R.; Davis, D. D. "Kinetics of Aqueous Phase Reactions of the SO42- Radical with Potential Importance in Cloud Chemistry" J. Geophysical Research, 1989, 94(D1), 1085-1094.

    89. Tang, Y. C.; Thorn, R. P.; Mauldin, R. L. and Wine, P. H. "Kinetics and Spectroscopy of the SO42- Radical in Aqueous Solution" J. Photochemistry and Photobiology, A: Chemistry, 1988, 44, 243-258.

    90. Ritchie, A. D. and Tang, Y. C. "Cation Anion Combination Reactions. 25. The Reactivity of Carbonate Ion" J. Organic Chem. 1986, 18, 51.

    91. Tang, Y. C. et al "Numerical Analysis of the Impossible Kinetics in Flash Absortion Spectroscopy" J. Phys. Chem. 1985, 89, 4844.