Vapour phase O-methylation of 2-naphthol over the solid bases alkali-loaded silica and Cs-loaded MCM-41

被引：26

作者：

Bal, R ^{[1
]}

Chaudhari, K ^{[1
]}

Sivasanker, S ^{[1
]}

机构：

[1] Natl Chem Lab, Pune 411008, Maharashtra, India

来源：

CATALYSIS LETTERS | 2000年 / 70卷 / 1-2期

关键词：

O-alkylation; 2-naphthol; alkali-metal-loaded silica; MCM-41;

D O I：

10.1023/A:1019067200553

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：

O-alkylation of 2-naphthol has been investigated in the vapour phase over alkali-loaded fumed silica and Cs-MCM-41. Both SiO2 and MCM-41 had low C-alkylation activities and no O-alkylation activity. The introduction of alkali ions considerably increases 2-naphthol conversion with 2-methoxynaphthalene being the major product. The activity of the catalysts increases with alkali loading and the basicity of the metal (Cs >K > Na > Li). Very high conversion (similar to 99%) of 2-naphthol and selectivity (> 95%) for 2-methoxynaphthalene are obtained over Cs-loaded fumed silica and MCM-41. A small amount of 1-methyl-2-hydroxynaphthalene is also formed over the Li-, Na- and K-loaded silica.

引用

页码：75 / 78

页数：4

共 17 条

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