TITLE: Liquid Hydrocarbon Fuels from Syngas. Seventh Quarterly Report, September-November 1982.

INST.  AUTHOR: Union Carbide Corp., Tarrytown, NY. Tarrytown Technical Center.

SPONSOR: Department of Energy, Washington, DC.

LANGUAGE: English

PUB.  TYPE: Technical Report

PUB.  COUNTRY: United States

SOURCE: Department of Energy [DE],  1982,  210p.

ABSTRACT:

The LZ-105-6, a medium pore molecular sieve, similar in structure to ZSM-5, is the most active catalyst we have tested so far for the conversion of propylene. At optimal conditions, it converted 90% of the feed versus 63% found with UCC-104. However, the test carried out in the Berty reactor showed that this catalyst has inferior selectivity to C sub 5+ (89%) relative to UCC-104 (96%). The lower C sub 5+ yield with LZ-105 follows from the increased conversion of the propylene to saturated C sub 3 -C sub 4 hydrocarbons. A Task 2 catalyst was prepared by the physical mixture of the reference Fischer-Tropsch catalyst used above and the large pore UCC-101. This catalyst, in contrast to the reference catalyst, did not produce the excess C sub 20+ products. Here, the hydrocarbons were isomerized and the pour points of all condensed samples were below room temperature. Conditions were adjusted to obtain excellent selectivity to gasoline, 50 wt. %, and total motor fuel, 70 wt. %. The high selectivity was achieved with this catalyst, however, at a relatively low activity level. Importantly, the product distribution of two runs showed signs of a carbon number cut off (shape selective effect). Thus, this experiment demonstrated the efficiency of UCC-101 as SSC component in that it isomerized the hydrocarbons formed on the MC resulting in substantial improvement of the motor fuel products, and it also seemed to show a cut-off at the end of the motor fuel boiling range. (ERA citation 09:039812)

REPORT  NUMBER: DOE/PC/40077-T3

CONTRACT  NUMBER: AC22-81PC40077