TITLE: Catalyst and process development for synthesis gas conversion to isobutylene. Quarterly report, April 1, 1993--June 30, 1993.

AUTHOR: R. G. Anthony;   A. Akgerman.

INST.  AUTHOR: Texas A and M Univ., College Station. Kinetics, Catalysis, and Reaction Engineering Lab.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  6 Oct 93,  34p.

NTIS ORDER NO.: DE94004548INW

ABSTRACT:

The presence of potassium or calcium in sol gel catalysts increase the production of C(sub 4) hydrocarbon and that of methane while maintaining high activities. Characterization of catalysts using temperature programmed desorption of carbon dioxide indicates that activity and product distribution over an isosynthesis catalyst depend on its acid-base properties. Low activity was observed for catalysts with very weak basicity, and high oxygenate production for catalysts with strong basicity. An optimum strength of basic sites is crucial to achieve high activity while minimizing the amount of oxygenates. A kinetic model was developed based on the reaction mechanisms, and the simulation from the model produces reasonable fit with the experimental data.

REPORT  NUMBER: DOE/PC/90045-T7

CONTRACT  NUMBER: AC22-90PC90045