Catalytic Polymerization of Diesel Fuel.
Abstract
This research program investigated the catalytic modification of the hydrocarbons of diesel fuel to form a high molecular weight product that would be an effective substitute for fog oil. The oligomerization of diesel fuel was performed in a two-step process; the diesel fuel was dehydrogenated to form a more reactive intermediate, and this intermediate was allowed to polymerize to produce the high molecular weight material. These reactions were conducted in two separate continuous fixed-bed catalytic reactors. Experiments on the dehydrogenation reactor demonstrated that olefine could be formed from diesel fuel; however, the yield was low. In the oligomerization reactor when diolefins and alkylated aromatics were added to diesel fuel a high molecular weight product was formed. The dehydrogenation catalyst Cobalt Molybdenum Disulfide, a sulfur tolerant catalyst, was used in the experiments in the combined reactor system and a rare earth substituted SK-500 zeolite was the oligomerization catalyst. A very promising result was obtained in an early experiment when the reactors were combined; roughly 30% - 40% of the diesel was converted to a high molecular weight product. Subsequent reactions were not as successful; a high molecular weight product was obtained, but not enough to produce a reduction in the evaporation rate. We suspect that the poor reaction yield is caused by an ineffective dehydrogenation of the diesel fuel. Keywords: Cobalt compounds.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA176908
Entities
People
- C. L. Witham
- J. G. Mccarty
- R. M. Platz
Organizations
- SRI International