Acetylation of glycerol to synthesize bioadditives over niobic acid supported tungstophosphoric acid catalysts

被引：110

作者：

Balaraju, M. ^{[1
]}

Nikhitha, P. ^{[1
]}

Jagadeeswaraiah, K. ^{[1
]}

Srilatha, K. ^{[1
]}

Prasad, P. S. Sai ^{[1
]}

Lingaiah, N. ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Catalysis Lab, I&PC Div, Hyderabad 500607, Andhra Pradesh, India

来源：

FUEL PROCESSING TECHNOLOGY | 2010年 / 91卷 / 02期

关键词：

Glycerol; Acetylation; Acetic acid; Tungstophosphoric acid; Niobic acid; ION-EXCHANGE-RESIN; COMMODITY CHEMICALS; ACETIC-ACID; HYDROGENOLYSIS; ESTERIFICATION; DERIVATIVES; CONVERSION; OXIDATION; FUEL;

D O I：

10.1016/j.fuproc.2009.10.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Acetylation of glycerol to yield mono, di and triacetin (acetylated glycerol) was carried over niobic acid supported tungstophosphoric acid (TPA) catalysts. The catalysts with varying TPA content were prepared and characterized by different techniques. The characterization results reveal the presence of well-dispersed Keggin ion on support. The results suggest that the glycerol conversion and selectivities depend on the acidity of the catalysts, which in turn is related to the content of TPA on niobic acid. The change in conversion and selectivities during the acetylation also is attributed to the reaction time, catalyst concentration and glycerol to acetic acid molar ratio. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：249 / 253

页数：5

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