Preparation of solid acid catalyst from glucose-starch mixture for biodiesel production

被引：206

作者：

Chen, Guo ^{[1
]}

Fang, Baishan ^{[1
]}

机构：

[1] Huaqiao Univ, Dept Bioengn & Biotechnol, Xiamen 361021, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 03期

基金：

国家高技术研究发展计划(863计划);

关键词：

Solid acid catalyst; Esterification; Transesterification; Biodiesel; Starch; COTTONSEED OIL; TRANSESTERIFICATION;

D O I：

10.1016/j.biortech.2010.10.099

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of this work is to study the catalyst prepared by glucose-starch mixture. Assessment experiments showed that solid acid behaved the highest esterification activity when glucose and corn powder were mixed at ratio of 1:1, carbonized at 400 degrees C for 75 min and sulfonated with concentrated H2SO4 (98%) at 150 degrees C for 5 h. The catalyst was characterized by acid activity measurement,. XPS, TEM and FT-IR. The results indicated that solid acid composed of CS0.073O0.541 has both Lewis acid sites and Bronsted acid sites caused by -SO3H and -COOH. The conversions of oleic acid esterification and triolein transesterification are 96% and 60%, respectively. Catalyst for biodiesel production from waste cottonseed oil containing high free fatty acid (FFA 55.2 wt.%) afforded the methyl ester yield of about 90% after 12 h. The catalyst deactivated gradually after recycles usage, but it could be regenerated by H2SO4 treatment. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2635 / 2640

页数：6

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