Amorebieta, V. T. and Colussi, A. J. (1982) Gas-phase free radicals in the catalytic decomposition of hexane over tungsten. A modulated-beam mass spectrometric study. Journal of Physical Chemistry, 86 (14). pp. 2760-2765. ISSN 0022-3654 . http://resolver.caltech.edu/CaltechAUTHORS:20150623-154815381
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Abstract
Desorption of alkyl and alkenyl (methyl, ethyl, allyl, and propyl) radicals from hot surfaces in the low-pressure (1 x 10^(12) - 8 x 10^(12) molecules cm^(-3) catalytic decomposition of hexane over W (1100-1800 K) and Pt (850-1400 K) has been studied by modulated-beam mass spectrometry. Time-of-flight analysis (phase spectrometry) of reaction products provided direct evidence about their identity. The effects of temperature, pressure, and surface treatment upon radical yields have also been investigated. Trapping of reactive species with iodine in a tandem reactor confirmed the presence of alkyl radicals. A mechanism is proposed in which free radicals, once formed, either desorb from the surface or decompose further into smaller fragments and olefins.
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| Additional Information: | © 1982 American Chemical Society. (Received: November 6, 1981; In Final Form: February 18, 1982) Generous support from "Comisión de Investigaciones Cientificas de la Provincia de Buenos Aires" is acknowledged. | |||||||||
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| Record Number: | CaltechAUTHORS:20150623-154815381 | |||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20150623-154815381 | |||||||||
| Official Citation: | Gas-phase free radicals in the catalytic decomposition of hexane over tungsten. A modulated-beam mass spectrometric study V. T. Amorebieta and A. J. Colussi The Journal of Physical Chemistry 1982 86 (14), 2760-2765 DOI: 10.1021/j100211a040 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 58549 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 24 Jun 2015 18:07 | |||||||||
| Last Modified: | 24 Jun 2015 18:07 |
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