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- W2000959923 abstract "Studies of the pyrolysis of hydrocarbons over different catalysts revealed that there are no inert surfaces during pyrolysis, i.e., even quartz, passivated silica gel, and pumice catalyze the pyrolysis to some extent. The pyrolysis catalyst KVO/sub 3/ was synthesized and studied in detail. Conversion of propane and n-butane was found to be greater than 95% using the KVO/sub 3/ catalyst supported on pumice. The pyrolysis of propane, propylene, ethylene, and their mixtures was found to take place by a heterogeneous mechanism, and homogeneous initiating additives were developed to increase the efficiency of the pyrolysis. These additives may be additives operating at the stage of reaction initiation, additives operating at the stage of chain extension or a combination of both. Peroxide compounds were found to be additives of the first type, HC1, the second type, and free halogens probably the third type. Results of studies of the n-C/sub 4/H/sub 10/-HCl system indicated that initiated pyrolysis is a first order reaction with respect to HC1 and fractional with respect to n-C/sub 4/H/sub 10/. Addition of a homogeneous additive to a heterogeneously-catalyzed pyrolysis reaction resulted in a higher ethylene and hydrogen yield and a lower methane and ethane yield. (BLM)" @default.
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- W2000959923 date "1979-01-01" @default.
- W2000959923 modified "2023-09-26" @default.
- W2000959923 title "Features of catalytic pyrolysis in the presence of heterogeneous and homogeneous catalysts" @default.
- W2000959923 doi "https://doi.org/10.1016/0031-6458(79)90001-7" @default.
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