Thermodynamic and kinetic aspects of surface acidity. Progress report, July 1, 1993--June 30, 1994
During the past year, the research involved studies of solid acidity, role of acidity in methylamine synthesis reactions, and catalytic cracking of hydrocarbons. Studies were completed of the acidity of ZSM-5 catalysts, in which effects of non-framework aluminum species on acidity of Broensted acid sites associated with the framework were explored. It was found that microcalorimetric studies of ammonia adsorption at 423 K can be used to determine acid strength distributions of high surface area catalysts. Effects of Sn{sup 2+} and Sn{sup 4+} on acid and base sites of alumina were investigated; the former cation neutralizes the acid and base sites. Results of microcalorimetric, infrared spectroscopic, and reaction kinetic studies are being brought together to describe the factors controlling methylamine synthesis and related reactions over acid catalysts. The catalytic cracking studies involved developing a kinetic model for isobutane cracking over acidic Y zeolites.
- Research Organization:
- Wisconsin Univ., Madison, WI (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-84ER13183
- OSTI ID:
- 10154228
- Report Number(s):
- DOE/ER/13183-9; ON: DE94012351; BR: ER0000000/KC0302010
- Resource Relation:
- Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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Thermodynamic and kinetic aspects of surface acidity. Progress report, July 1, 1994--June 30, 1995