The effect of the reactor type on the selectivity of thermal reactions of p-xylene in temperature gradient systems.

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概要

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• Thermal reactions of <I>p</I>-xylene were investigated in two kinds of reactors, batch type and flow type, with a large temperature gradient. Excellent differences of the resulting products were observed between these two types of reactors. As for a batch type reactor, 4,4′-dimethylbibenzyl was produced in a high yield with [2.2]paracyclophane and toluene as by-products, and as for a flow type reactor, toluene was obtained as a major product with a low selectivity of 4,4′-dimethylbibenzyl, respectively. These results were different from those of the conventional fast flow pyrolysis method in which [2.2]paracyclophane or poly(3,6-dimethylene-1,4-cyclohexadiene) was formed as a major product. These differences can be accounted for by the partial separation of a reaction mixture caused by the thermal diffusion effect, which arises when the mixture is subject to a temperature gradient.

• 公益社団法人 日本化学会の論文

著者

• Yamaguchi Tatsuaki

  Laboratory Of Organic Chemistry Chiba Institute Of Technology

• Nakada Masahiro

  Laboratory of Chemistry, Chiba Institute of Technology

• Iwaki Shingo

  Laboratory of Chemistry, Chiba Institute of Technology

• Kawakami Shigenobu

  Laboratory of Chemistry, Chiba Institute of Technology

• Yamaguchi Tatsuaki

  Laboratory of Chemistry, Chiba Institute of Technology

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