Butyric acid esterification kinetics over Amberlyst solid acid catalysts: The effect of alcohol carbon chain length

被引：52

作者：

Pappu, Venkata K. S. ^{[1
]}

Kanyi, Victor ^{[2
]}

Santhanakrishnan, Arati ^{[1
]}

Lira, Carl T. ^{[1
]}

Miller, Dennis J. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Chem Engn & Mat Sci, E Lansing, MI 48824 USA

[2] Hope Coll, Holland, MI 49423 USA

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 130卷

关键词：

Butyric Acid; Esterification; Amberlyst; 70; Biofuel; 2-Ethylhexanol; CARBOXYLIC-ACIDS; ACETIC-ACID; FATTY-ACID; CONVERSION; ETHANOL; DESIGN; RANGE;

D O I：

10.1016/j.biortech.2012.12.087

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The liquid phase esterification of butyric acid with a series of linear and branched alcohols is examined. Four strong cation exchange resins, Amberlyst (TM) 15, Amberlyst (TM) 36, Amberlyst (TM) BD 20, and Amberlyst (TM) 70, were used along with para-toluenesulfonic acid as a homogeneous catalyst. The effect of increasing alcohol carbon chain length and branching on esterification rate at 60 degrees C is presented. For all catalysts, the decrease in turnover frequency (TOF) with increasing carbon chain length of the alcohol is described in terms of steric hindrance, alcohol polarity, and hydroxyl group concentration. The kinetics of butyric acid esterification with 2-ethylhexanol using Amberlyst (TM) 70 catalyst is described with an activity-based, pseudo-homogeneous kinetic model that includes autocatalysis by butyric acid. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：793 / 797

页数：5

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