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James F. Haw

R. R. Irani CEO of Occidental Petroleum Professor of Chemistry
Organic and Physical Chemistry

Ph. D., 1982, Virginia Polytechnic Institute
M.S., 1979, University of North Carolina
B.S., 1977, Old Dominion University
Office: SOS B-15B
Phone: (213) 740-1022
Fax:
Email: jhaw@usc.edu
 Group Homepage


Research Focus

 
Heterogeneous Catalysis

Our interdisciplinary research group studies reaction mechanisms in catalysis by zeolites, metal oxides, and supported metals. We do fundamental work on problems of great practical importance. In the course of research our students learn bench-top catalysis, mechanistic study by on-line GC-MS and in situ NMR spectroscopy, and catalyst synthesis. Some of our students also use theoretical modeling to help them interpret their experimental results. We also do instrument development as needed to keep us at the forefront of chemical investigations in catalysis research.

In the past several years we have elucidated many of the details of the hydrocarbon pool mechanism in methanol-to-olefin (MTO) catalysis. MTO is a long-standing scientific problem and it is the crucial central step in the conversion of methane to polyolefins. We are exploiting this understanding to synthesize new MTO catalysts. Other mechanistic projects involve hydrocarbon cracking and partial oxidation catalysis. The development of solid-state NMR methods for the study of catalysts and other materials is a long-standing interest of the group.

Selected publications

 

1.

Haw, J. F., "Zeolite Acid Strength and Reaction Mechanisms in Catalysis", Phys. Chem. Chem. Phys., 2002, 4, 5431-5441.

2.

Haw, J. F.; Song, W.; Marcus, D. M.; Nicholas, J. B., "The Mechanism of Methanol to Hydrocarbon Catalysis", Acc. Chem. Res. 2003, 36, 317-326.

3.

Ehresmann, J. O.; Wang, W.; Herreros, B.; Luigi, D-.P.; Venkatraman, T. N.;  Song, W.; Nicholas, J. B.; Haw, J.  F., "Theoretical and Experimental Investigation of the Effect of Proton Transfer on the 27Al MAS NMR Line Shapes of Zeolite-Adsorbate Complexes: An Independent Measure of Solid Acid Strength", J. Am. Chem. Soc. 2002, 124, 10868-10874.

4.

Sassi, A.; Wildman, M. A.; Haw, J. F., "Reactions of Butylbenzene Isomers on Zeolite HBeta: Methanol-to-Olefins Hydrocarbon Pool Chemistry and Secondary Reactions of Olefins", J. Phys. Chem. B. 2002, 106, 8768-8773.

5.

Marcus, D. M.; Song, W.; Ng, L. L.; Haw, J. F., "Aromatic Hydrocarbon Formation in HSAPO-18 Catalysts: Cage Topology and Acid Site Density", Langmuir 2002, 18, 8386-8391.

6.

Haw, J. F.; Marcus, D. M., "Examples of Organic Reactions on Zeolites: Methanol to Hydrocarbon Catalysis", in Handbook of Zeolite Catalysts and Microporous Materials, Editors:  Auerbach, S.; Carrado, K.; Dutta, P., 2002, Marcel Dekker, NY.

7.

Haw, J. F., Editor, In Situ Spectroscopy in Heterogeneous Catalysis, 2002, Wiley, NY.

8.

Fu, H.; Song, W.; Marcus, D. M.; Haw, J. F., "Ship-in-a-Bottle Synthesis of Methylphenols in HSAPO-34 Cages From Methanol and Air", J. Phys. Chem. B. 2002, 106, 5648-5652.

9.

Song, W.;  Marcus, D. M.; Fu, H.; Ehresmann, J. O.; Haw, J. F., "An Oft-Studied Reaction That Never Was: Direct Conversion of Methanol or Dimethylether to Hydrocarbons on the Solid Acids HZSM-5 or HSAPO-34", J. Am. Chem. Soc. 2002, 124, 3844-3845.

10.

Sassi, A.; Song, W.; Wildman, M. A.; Ahn, H. J.; Prasad, P.; Nicholas, J. B.; Haw, J. F., "Methylbenzene Chemistry on Zeolite HBeta: Multiple Insights into Methanol to Olefin Catalysis", J. Phys. Chem. B. 2002, 106, 2294-2303.

11.

Song, W.; Fu, H.; Haw, J. F., "Selective Synthesis of Methylnaphthalenes in HSAPO-34 Cages and Their Function as Reaction Centers in Methanol-to-Olefin Catalysis", J. Phys. Chem. B 2001, 105, 12839-12843.

12.

Song, W.; Fu, H.; Haw, J. F., "Supramolecular Origins of Product Selectivity for Methanol-to-Olefin Catalysis on HSAPO-34", J. Am. Chem. Soc. 2001, 122, 4749-4754.

13.

Barich, D. H.; Nicholas, J. B.; Haw, J. F., "GIAO Proton Chemical Shifts of Strong Hydrogen Bonds: the Importance of Electron Correlation", J. Phys. Chem. A 2001, 105, 4708-4715.

14.

Song, W.; Nicholas, J. B.; Haw, J. F., "A Persistent Carbenium Ion on the Methanol-to-Olefin Catalyst HSAPO-34: Acetone Shows the Way", J. Phys. Chem. B 2001, 105, 4317-4323.

15.

Song, W.; Nicholas, J. B.; Haw, J. F., "Acid-Base Chemistry of a Carbenium Ion in a Zeolite Under Equilibrium Conditions: Verification of a Theoretical Explanation of Carbenium Ion Stability", J. Am. Chem. Soc. 2001, 123, 121-129.

16.

Haw, J. F.; Zhang, J.; Shimizu, K.; Venkatraman, T. N.; Luigi, D-.P.; Song, W.; Barich, D. H.; Nicholas,  J. B., "NMR and Theoretical Study of Acidity Probes on Sulfated Zirconia Catalysts", J. Am. Chem. Soc. 2000, 122, 12561-12570.

17.

Song, W.; Haw, J. F.; Nicholas, J. B.; Heneghan, K., "Methylbenzenes are the Organic Reaction Centers for Methanol to Olefin Catalysis on HSAPO-34", J. Am. Chem. Soc. 2000, 122, 10726-10727.

18.

Haw, J. F.; Nicholas, J. B.; Song, W.; Deng, F.; Wang, Z.; Xu, T.; Heneghan, K., "Roles for Cyclopentenyl Cations in the Synthesis of Hydrocarbons from Methanol on Zeolite Catalyst HZSM-5", J. Am. Chem. Soc. 2000, 122, 4763-4775.

19.

Zhang, J.; Nicholas, J. B.; Haw, J. F., "NMR and Theoretical Study of Acid Sites Formed by Adsorption of SO3 onto Oxide Surfaces", Angew. Chem.  Int.  Ed. 2000, 39, 3302-3304.

20.

Goguen, P. W.; Xu, T.; Barich, D. H.; Skloss, T. W.; Song, W.; Wang, Z.; Nicholas, J. B.; Haw, J. F., "Pulse-Quench Catalytic Reactor Studies Reveal a Carbon-PoolMechanism in Methanol-to-Gasoline Chemistry on Zeolite HZSM-5", J. Am. Chem. Soc. 1998, 120, 2650-2651.

 

Chemistry Dept., USC College of Letters, Arts & Sciences