Benzylation of toluene and anisole by benzyl alcohol catalyzed by niobic acid: Influence of pretreatment temperature in the catalytic activity of niobic acid

被引：27

作者：

Moraes, M

Pinto, WDSF

Gonzalez, WA

Carmo, LMPM

Pastura, NMR

Lachter, ER

机构：

[1] UNIV FED RIO DE JANEIRO,INST QUIM,DEPT QUIM ORGAN,LAB CATALISE ORGAN,BR-21949900 RIO JANEIRO,RJ,BRAZIL

[2] INST MIL ENGN,INST QUIM,RIO JANEIRO,RJ,BRAZIL

来源：

APPLIED CATALYSIS A-GENERAL | 1996年 / 138卷 / 01期

关键词：

benzylation; niobic acid; pretreatment temperature; Friedel-Crafts reaction;

D O I：

10.1016/0926-860X(96)00044-0

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：

We have studied the influence of the pretreatment temperature (423 K and 573 K) on the catalytic activity of commercial niobic acid for the benzylation of toluene and anisole with benzyl alcohol. The reactions were carried out in liquid phase at reflux temperature of the mixture. Best results were achieved with niobic acid pretreated at 573 K. The conversion of benzyl alcohol was 78.9 to anisole and the main product was the monobenzylation product.

引用

页码：L7 / L12

页数：6

共 18 条

[1]

Commandeur R., 1991, European Patent, Patent No. [0422 986, 0422986]

[2] BENZYLATION OF TOLUENE BY BENZYL-CHLORIDE OVER PROTONIC ZEOLITES [J].