TITLE: Development of a catalyst for conversion of syngas-derived materials to isobutylene. Technical progress report No. 5, March 31, 1992--June 30, 1992.

AUTHOR: G. J. Gajda.

INST.  AUTHOR: UOP, Inc., Des Plaines, IL.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  10 Sep 93,  16p.

NTIS ORDER NO.: DE94004536INW

ABSTRACT:

The main goal of this contract is to develop a catalyst and technology that will produce iC4(sub 4)(sup =) directly from coal-derived syngas and that is capable of using a lower H(sub 2)/CO ratio (0.5 to 1.0). The research will identify and optimize the key catalyst and process characteristics that give improved performance for CO conversion by a non-Fischer-Tropsch process. This report, which is Quarterly Report No. 5 for contract DE-AC22-91PC90042, covers the testing of various zirconia (ZrO(sub 2)) and bismuth oxide (Bi(sub 2)O(sub 3)) based catalyst systems designed to examine the effects of catalyst preparation and process variables, especially the H(sub 2)/Co ratio. Testing of sol-gel ZrO(sub 2) catalysts with lanthanum (La) or yttrium (Y) addition indicates a decrease in isobutene yield. An attempt to increase catalyst surface area by impregnating Zr on a sol-gel SiO(sub 2) catalyst was unsuccessful. A Bi(sub 2)O(sub 3) catalyst was very low in activity as a result of complete reduction to Bi metal. Increasing the H(sub 2)/CO ratio to 2:1 slightly increased the isobutene yield and improved catalyst stability.

REPORT  NUMBER: DOE/PC/90042-T5

CONTRACT  NUMBER: AC22-91PC90042