Abstract
During pyrolysis of gasoline fractions in the presence of an indium oxide catalyst under optimum process conditions with respect to the yield of low molecular weight olefins, 2.0-2.5 times less liquid products are formed in comparision with thermal pyrolysis (quartz) under similar conditions. Modification of the indium oxide catalyst using 5 wt. % K/sub 2/O increases the content of unsaturated hydrocarbons in liquid pyrolytic products and stimulates gasification of products of condensation on the surface of the catalyst. On transition from thermal to catalytic pyrolysis the yield of individual aromatic hydrocarbons (C/sub 6/-C() decreases 2 to 3-fold. Practically no aromatic hydrocarbons are formed by catalytic pyrolysis. Aromatic hydrocarbons contained in the initial raw material undergo dealkylation. Phenyl radicals also undergo recombination to form aromatic hydrocarbons. (JMT)
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