Mechanism of pyrolysis of p-xylene

L.V. Shevel'kova , V.G. Sokolovskaya , L.Ye. Gusel'nikov , V.N. Guryshev
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引用次数: 3

Abstract

  • 1.

    1. The pyrolysis of p-xylene at temperatures of 830°–1000°C with different hydrocarbon partial pressures (argon/p-xylene=10 : 1, 20 : 1, 30 : 1) has been investigated.

  • 2.

    2. The suggested radical-chain mechanism of p-xylene pyrolysis at high temperatures has an initiation stage leading to the formation of a p-methylbenzyl radical.

  • 3.

    3. It is concluded that toluene is formed mainly by the hydrodealkylation of p-xylene under the given conditions.

对二甲苯的热解机理
1.1. 研究了不同烃类分压(氩气/对二甲苯= 10:1、20:1、30:1)下对二甲苯在830℃~ 1000℃温度下的热解过程。提出的对二甲苯高温热解的自由基链机制存在一个起始阶段,导致对甲基苄基自由基的形成。在一定条件下,甲苯主要由对二甲苯的加氢脱烷基反应生成。
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