Selective ortho alkylation of phenol with alcohols over catalysts derived from hydrotalcite-like anionic clays

被引：12

作者：

Velu, S ^{[1
]}

Swamy, CS ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India

来源：

RESEARCH ON CHEMICAL INTERMEDIATES | 2000年 / 26卷 / 03期

关键词：

D O I：

10.1163/156856700X00796

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The vapour phase alkylation of phenol with a series of alcohols containing different number of carbons ranging from C-1 to C-8 were investigated over catalysts derived from magnesium-aluminium hydrotalcite with Mg/Al atomic ratio 3 (MgAl 3.0-HT). The results indicated that at 623 K the catalytic activity for phenol conversion increased with increasing chain length of linear long chain alcohols to give 2-alkylated linear alkyl phenols, without any isomerisation of the alkyl moiety. Isomorphous substitution of Mg2+ by Cu2+ Or Ni2+ in, the MgAl 3.0-HT resulted in an increase in selectivity of 2-alkyl and 2,6-dialkylphenols (approximate to 60 %) in the alkylation of phenol with 1-hexanol or 1-octanol.

引用

页码：295 / 302

页数：8

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