新型磺化竹炭材料催化酯化反应

doi:10.11949/j.issn.0438-1157.20150804

化工学报 ›› 2015, Vol. 66 ›› Issue (8): 3072-3077.DOI: 10.11949/j.issn.0438-1157.20150804

• 催化、动力学与反应器 • 上一篇下一篇

新型磺化竹炭材料催化酯化反应

沈忠权, 余锡孟, 陈纪忠

浙江大学化学工程与生物工程学院, 浙江杭州 310027

收稿日期:2015-06-02 修回日期:2015-06-10 出版日期:2015-08-05 发布日期:2015-08-05
通讯作者: 陈纪忠
基金资助:
浙江省先进催化技术创新团队基金项目(2009R50020)。

Esterification reactions catalyzed by novel sulfonated carbon material derived from bamboo

SHEN Zhongquan, YU Ximeng, CHEN Jizhong

College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China

Received:2015-06-02 Revised:2015-06-10 Online:2015-08-05 Published:2015-08-05
Supported by:
supported by the Science and Technology Department of Zhejiang Province (China) (2009R50020).

摘要/Abstract

摘要：

以竹粉为原料、对甲苯磺酸为磺化剂,一锅法制备合成了新型磺化竹炭材料(SBC)。利用元素分析、酸碱反滴定、热重分析(TGA)、X射线光电子能谱(XPS)、X射线衍射(XRD)和傅里叶红外(FTIR)等对所制备的SBC进行了表征。以乙酸和正丁醇的酯化反应为探针反应,评价了SBC的催化作用,考察了催化剂用量、反应温度、酸醇摩尔比等的影响。结果表明,在反应温度为80℃、反应时间4 h、SBC用量为正丁醇质量的10%、酸醇摩尔比为3.5:1的适宜条件下,正丁醇转化率达到91.8%,选择性99.5%。SBC重复使用5次,正丁醇转化率仍可达80%以上。此外,SBC催化其他酯化反应体系的实验结果表明,SBC催化活性接近或优于商品离子交换树脂Amberlyst-15。

关键词: 磺化竹炭, 竹材, 催化剂, 乙酸丁酯, 酯化反应, 对甲苯磺酸

Abstract:

A novel sulfonated carbon from bamboo (SBC) was prepared by one-pot method using p-toluenesulfonic acid as sulfonating agent. The structure and property of SBC were characterized using elemental analysis, acid-base inverse titration, thermo-gravimetric analysis (TGA), X-ray photon spectroscopy (XPS), XRD and FTIR. Esterification of n-butanol with acetic acid was used as a standard reaction to evaluate the catalytic performance of SBC. The influences of catalyst amount, temperature and molar ratio of acid to alcohol were fully investigated．91.8% conversion of n-butanol with 99.5% selectivity was achieved under the following conditions: reaction temperature 80℃, reaction time 4 h, catalyst amount 10% (mass) of n-butanol, molar ratio of acetic acid to n-butanol 3.5:1. Above 80% conversion of n-butanol could still be reached after SBC was used for 5 times. Additionally, SBC showed comparable or superior catalytic activity in other esterification reactions in comparison with the commercial ion exchange resin Amberslyst-15, which demonstrated that SBC has a good prospect in industrial applications.

Key words: sulfonated carbon, bamboo, catalyst, butyl acetate, esterification, p-toluenesulfonic acid

中图分类号:

O623.42

沈忠权, 余锡孟, 陈纪忠. 新型磺化竹炭材料催化酯化反应[J]. 化工学报, 2015, 66(8): 3072-3077.

SHEN Zhongquan, YU Ximeng, CHEN Jizhong. Esterification reactions catalyzed by novel sulfonated carbon material derived from bamboo[J]. CIESC Journal, 2015, 66(8): 3072-3077.

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新型磺化竹炭材料催化酯化反应

Esterification reactions catalyzed by novel sulfonated carbon material derived from bamboo

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