Liquid phase nitration of benzene over supported ammonium salt of 12-molybdophosphoric acid catalysts prepared by sol-gel method

被引：27

作者：

Gong, Shuwen ^{[1
]}

Liu, Lijun ^{[1
]}

Cui, Qingxin ^{[1
]}

Ding, Junhong ^{[1
]}

机构：

[1] Liaocheng Univ, Dept Chem, Liaocheng 252059, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 178卷 / 1-3期

关键词：

Ammonium salt of 12-molybdophosphoric acid; Catalyst; Benzene; Nitration; REGIOSELECTIVE NITRATION; NITRIC-ACID; PHENOL; EFFICIENT; ESTERIFICATION; PREYSSLER;

D O I：

10.1016/j.jhazmat.2010.01.095

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A mild and clean liquid nitration of benzene with 65% nitric acid as nitrating agent over silica supported ammonium salt of 12-molybdophosphoric acid catalysts has been investigated. These catalysts with different loadings were prepared by sol-gel method and characterized by X-ray diffraction (XRD) and FTIR spectra. The acidity of these catalysts was measured by the potentiometric titration method. The XRD and IR analysis revealed that supported catalysts possess the Keggin structure which is similar to 12-molybdophosphoric acid. And it can be found that the supported catalysts had high nitration reaction catalytic activity and selectivity over nitrobenzene. The effects of various parameters such as nitric acid/benzene volume ratio, temperature and time of reaction have also been systematically studied. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：404 / 408

页数：5

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