High Temperature Radiation Chemistry of Hydrocarbons

Autor:	Barry L Tarmy, D. L. Baeder, R.B. Long, P. J. Lucchesi, John P Longwell
Rok vydání:	1958
Předmět:	Chemical kinetics Cracking Atmospheric pressure Thermal radiation Chemistry Thermal decomposition Inorganic chemistry General Engineering Analytical chemistry Radiation chemistry Chemical reaction Chain reaction
Zdroj:	Industrial & Engineering Chemistry. 50:879-884
ISSN:	1541-5724 0019-7866
DOI:	10.1021/ie50582a030
Popis:	Radiation-induced cracking of pure hydrocarbons and mixtures is a long- chain reaction at 320 deg to 510 deg C. Product distributions are similar to those obtained with thermal cracking. The radiation yields (10/sup 4/ to 10/sup 5/) increase with increasing temperature, are lower in the liquid than the vapor phase, and increase at lower intensity. Radiocracking results from both cobalt- 60 and pile work can be quaditatively explained by assuming the Rice-Herzfeld radical mechanism. Close agreement between calculated and predicted radiation yields indicates that atmospheric pressure radiocracking is an ordinary radical chain reaction. This gives new insight into the mechanism of thermal decomposition of hydrocarbons, which is believed to be a chain process of low chain length. (auth)
Databáze:	OpenAIRE
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