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Title: THE RADIATION-INDUCED CHAIN ALKYLATION OF PROPYLENE WITH ISOBUTANE

Abstract

A study was made of the gas phase alkylation of propylene with isobutane initiated by nuclear radiation at 55 atm pressure and 350 to 400 deg C. At these conditions, Co-60 radiation initiates a chain reaction and the purely thermal reaction is negligibly slow. Detailed product composition data are given as a function of conversion level. Although the radioalkylation chain reaction gives a complex mixture of products, the major products above butane are dimethylpentanes, isopentane, and olefins. The chain length for this reactlon is of the order 20 to 100. It increases with temperature and total pressure, increases directly with increasing olefin concentration and inversely with the half power of radiation dose rate. In addition, the chain radloalkylation has an induction period. It is not possible to decide unequivocally whether this new reaction is an accelerated thermal (i.e., free radical) chain alkylation or a chain reaction propagated by ions peculiar to the radiation method of initiation. However, the data are discussed from the viewpoint of ordinary free radical chemistry and it is shown that the major results can be reconciled with well established radical reactions. (auth)

Authors:
;
Publication Date:
Research Org.:
Esso Research and Engineering Co., Linden, N.J.
Sponsoring Org.:
USDOE
OSTI Identifier:
4215665
NSA Number:
NSA-13-022067
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society (U.S.)
Additional Journal Information:
Journal Volume: Vol: 81; Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
CHEMISTRY; ALKENES; ALKYL RADICALS; BUTANE; CHEMICAL REACTIONS; CHEMICALS; COBALT 60; FREE RADICALS; GAMMA RADIATION; GAMMA SOURCES; GASES; HIGH TEMPERATURE; IONS; IRRADIATION; METHYL RADICALS; MIXING; PENTANE; PRESSURE; PROPYLENE; QUANTITY RATIO; RADIATION CHEMISTRY; RADIATION DOSES; RADIATION EFFECTS; REACTION KINETICS; TEMPERATURE

Citation Formats

Lucchesi, P J, and Heath, C E. THE RADIATION-INDUCED CHAIN ALKYLATION OF PROPYLENE WITH ISOBUTANE. Country unknown/Code not available: N. p., 1959. Web. doi:10.1021/ja01527a003.
Lucchesi, P J, & Heath, C E. THE RADIATION-INDUCED CHAIN ALKYLATION OF PROPYLENE WITH ISOBUTANE. Country unknown/Code not available. doi:10.1021/ja01527a003.
Lucchesi, P J, and Heath, C E. Sun . "THE RADIATION-INDUCED CHAIN ALKYLATION OF PROPYLENE WITH ISOBUTANE". Country unknown/Code not available. doi:10.1021/ja01527a003.
@article{osti_4215665,
title = {THE RADIATION-INDUCED CHAIN ALKYLATION OF PROPYLENE WITH ISOBUTANE},
author = {Lucchesi, P J and Heath, C E},
abstractNote = {A study was made of the gas phase alkylation of propylene with isobutane initiated by nuclear radiation at 55 atm pressure and 350 to 400 deg C. At these conditions, Co-60 radiation initiates a chain reaction and the purely thermal reaction is negligibly slow. Detailed product composition data are given as a function of conversion level. Although the radioalkylation chain reaction gives a complex mixture of products, the major products above butane are dimethylpentanes, isopentane, and olefins. The chain length for this reactlon is of the order 20 to 100. It increases with temperature and total pressure, increases directly with increasing olefin concentration and inversely with the half power of radiation dose rate. In addition, the chain radloalkylation has an induction period. It is not possible to decide unequivocally whether this new reaction is an accelerated thermal (i.e., free radical) chain alkylation or a chain reaction propagated by ions peculiar to the radiation method of initiation. However, the data are discussed from the viewpoint of ordinary free radical chemistry and it is shown that the major results can be reconciled with well established radical reactions. (auth)},
doi = {10.1021/ja01527a003},
journal = {Journal of the American Chemical Society (U.S.)},
number = ,
volume = Vol: 81,
place = {Country unknown/Code not available},
year = {1959},
month = {9}
}