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Formation of radicals and complex organic compounds by high-temperature pyrolysis: The pyrolysis of toluene

✍ Scribed by Richard D. Smith

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
721 KB
Volume
35
Category
Article
ISSN
0010-2180

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✦ Synopsis

A high-temperature Knudsen cell equipped with a gas inlet and modulated molecular-beam mass-spectrometric detection has been constructed to study the high-temperature pyrolysis of model fuel compounds. The high-temperature pyrolysis of toluene has been examined at temperatures of up to 1900Β°C and over a pressure range of approximately 10--3-10 N/m 2 (10--5-10 -1 torr). The pyrolysis of toluene has been found to produce a number of higher-molecular-weight species (including radicals, polycyclic aromatic compounds, and polyacetylenes) efficiently at temperatures of 1200-1500Β°C. At temperatures of 1200-1400Β° C, C3H 4, C4H 2, C4H 3, CsH 3, C5H 5, C6H 4, C6H 5, C7H 5, C7H6, and CTH 7 species were observed to have maxima in their concentrations as a function of pressure, suggesting a role in the formation of highermolecular-weight compounds. At higher temperatures, the major products were C2H2, C2H3, C2H4, C4H2, C6H2, and C6H6; species containing even numbers of carbon atoms dominate the reaction products.

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