Esterification of palmitic acid on the ammonium salt of 12-tungstophosphoric acid: The influence of partial proton exchange on the activity of the catalyst

被引：37

作者：

Giri, BY

Rao, KN

Devi, BLAP

Lingaiah, N

Suryanarayana, I

Prasad, RBN

Prasad, PSS ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Catalysis Div, Hyderabad 500007, Andhra Pradesh, India

[2] Indian Inst Chem Technol, Div Phys Chem, Hyderabad 500007, Andhra Pradesh, India

来源：

CATALYSIS COMMUNICATIONS | 2005年 / 6卷 / 12期

关键词：

ammonium salt of 12-tungstophosphoric acid; esterification; palmitic acid; acidity;

D O I：

10.1016/j.catcom.2005.08.001

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：

Esterification of palmitic acid was studied on the ammonium salt of 12-tungstophosphoric acid (TPA). The influence of ammonium content of the acid was investigated by preparing partially and fully proton exchanged catalysts. The catalysts were characterised by XRD and FT-IR for their structure and ammonium content, respectively. Potentionietric titration method was employed for the quantification of their acidity. The partially exchanged catalyst, possessing stronger acidic sites, was found to be more active than its fully exchanged analogue. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：788 / 792

页数：5

共 15 条

[1] Vapor phase esterification catalyzed by immobilized dodecatungstosilicic acid (SiW12) on activated carbon [J].