文献类型：期刊文献

英文题名：Carbon Nanotube-Based Solid Sulfonic Acids as Catalysts for Production of Fatty Acid Methyl Ester via Transesterification and Esterification

作者：Liu, Hang[1,2,3];Chen, Jinzhu[2,3];Chen, Limin[4];Xu, Yisheng[1];Guo, Xuhong[1];Fang, Dingye[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Key Lab Renewable Energy, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;[3]Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;[4]S China Univ Technol, Coll Environm & Energy, Guangzhou Higher Educ Mega Ctr, 382 Zhonghuan Rd East, Guangzhou 510006, Guangdong, Peoples R China

年份：2016

卷号：4

期号：6

起止页码：3140

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20162402495094);WOS:【SCI-EXPANDED(收录号:WOS:000377425900026)】；

基金：We are grateful for the financial support from the National Natural Science Foundation of China (21472189, 21172219, 21207039, 21306049), National Basic Research Program of China (973 Program, 2012CB215304), Science and Technology Planning Project of Guangdong Province, China (2015A010106010), Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-14C01), and 111 Project Grant (B08021). We thank Qiumin Wu and Shenghong Dong for the assistance with the preparation of AC-PVSAIC and PVSAIC.

语种：英文

外文关键词：Biodiesel; Carbon nanotubes; Esterification; Solid acid; Transesterification

摘要：A series of polymer-carbon nanotube composite materials (CNT-P-SO3H) were prepared by covalent grafting of multiwalled carbon nanotubes (CNTs) with sulfonic acid-functionalized polymers (P-SO3H) including poly(3-vinyl-1-sulfonic acid imidazolium chloride)-grafted multiwalled CNTs (CNT-PVSAIC), poly(4-vinyl-1-sulfonic acid pyridinium chloride) -grafted multiwalled CNTs (CNT-PVSAPC), and poly(4-styrenesulfonic acid) -grafted multiwalled CNTs (CNT-PSSA). Such a functionalization method provides a facile route to obtain various polyelectrolyte brushes on the surfaces of CNTs in order to improve the dispersibility and modulate the acidity of CNTs to selectively introduce functional groups and densely create active sites over CNTs for potential catalytic applications. Both CNT-PVSAIC and CNT-PVSAPC consist of cationic polyelectrolyte chains functionalized by sulfonic acid groups, whereas CNT-PSSA is composed of anionic polymer brushes grafted by sulfonic acid groups. The physicochemical properties of CNT-P-SO3H were analyzed by BET, TGA, XRD, FT-IR, XPS, Raman, and HRTEM techniques. The resulting CNT-P-SO3H materials exhibit excellent catalytic activity as CNT-based solid acids in liquid phase transesterification of triglycerides with methanol and esterification of oleic acid with methanol, which are typical model reactions for biodiesel production. The outstanding catalytic performance of the CNT-P-SO3H catalysts is attributed to the combination of the mesoporous structure together with a well extended P-SO3H coating over the outer surface of the CNTs, providing the formation of a dense but uniform surface distribution of active sites.