Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid

doi:10.1016/j.apcata.2012.03.044

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	Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid
	Geng, Liang; Yu, Gang; Wang, Yu; Zhu, Yuexiang
刊名	APPLIED CATALYSIS A-GENERAL
	2012-06-15
卷号	427 页码:137-144
关键词	Mesoporous Carbon Carbon-based Solid Acid Alumina Template Diazonium Modification Esterification
ISSN号	0926-860X
DOI	10.1016/j.apcata.2012.03.044
英文摘要	Mesoporous carbon materials with thin pore walls (similar to 1.7 nm) were synthesized using low-cost gamma-Al2O3 as a hard template and in situ polymerized resorcinol-furfural resin as the carbon precursor. Compared with sugar, resin, a widely used carbon precursor, has higher carbon yield and simplifies the synthetic process. Ph-SO3H modified mesoporous carbon was synthesized by covalent grafting of Ph-SO3H groups on mesoporous carbon via the diazonium salt. The resulting materials were characterized by means of nitrogen adsorption analysis, TEM, C-13 NMR, XRD, FTIR and sulfur elemental analysis. The modified carbons were shown to possess high surface area (similar to 1000 m(2)/g), a bimodal pore size distribution and high strong acid density (1.86 mmol H+/g). These sulfonated carbons were used as solid acid catalysts in the esterification of oleic acid and methanol, a key reaction in biodiesel production. Compared with the traditional solid acid Amberlyst-15, the optimized carbon catalyst exhibited much higher activity with a rate constant (1.34 h(-1)) three times to that of Amberlyt-15 and a turnover frequency (TOF) of 128 h(-1) eight times that of Amberlyst-15. The efficient catalytic ability was attributed to the high surface area and a proper mesopore texture. This carbon catalyst could then be easily separated from the product by filtration. The catalyst was reused six times, and no distinct activity drop was observed after the initial deactivation. (C) 2012 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000304692000019
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49067]
专题	中国科学院化学研究所
通讯作者	Zhu, Yuexiang
作者单位	Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Geng, Liang,Yu, Gang,Wang, Yu,et al. Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid[J]. APPLIED CATALYSIS A-GENERAL,2012,427:137-144.
APA	Geng, Liang,Yu, Gang,Wang, Yu,&Zhu, Yuexiang.(2012).Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid.APPLIED CATALYSIS A-GENERAL,427,137-144.
MLA	Geng, Liang,et al."Ph-SO3H-modified mesoporous carbon as an efficient catalyst for the esterification of oleic acid".APPLIED CATALYSIS A-GENERAL 427(2012):137-144.