The contribution of the methanol-to-aromatics reaction to benzene methylation over ZSM-5 catalysts

被引:53
作者
Adebajo, MO [1 ]
Long, MA [1 ]
机构
[1] Univ New S Wales, Sch Chem Sci, Sydney, NSW 2052, Australia
基金
澳大利亚研究理事会;
关键词
benzene methylation; methanol; methane; methanol-only conversion; benzene-only conversion; methane conversion; ZSM-5;
D O I
10.1016/S1566-7367(02)00259-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The methanol to aromatics conversion is shown to contribute significantly to the benzene methylation with methanol at 400degreesC over acidic ZSM-5 catalysts but such contribution over all catalysts is negligible at 250degreesC. Benzene-only conversion shows only negligible contribution at both temperatures over the catalysts studied. However, it appears that the methanol-only conversion can be minimised, to enhance the benzene methylation with methanol (and indirectly the oxidative benzene methylation with methane), by using NaZSM-5 with highly reduced Bronsted acidity. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:71 / 76
页数:6
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