文献类型：期刊文献

英文题名：Basicity-FAME yield correlations in metal cation modified MgAl mixed oxides for biodiesel synthesis

作者：Sun, Jian[1];Yang, Jingyi[1];Li, Shaoping[1];Xu, Xinru[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：52

起止页码：1

外文期刊名：CATALYSIS COMMUNICATIONS

收录：;EI(收录号：20141817669704);WOS:【SCI-EXPANDED(收录号:WOS:000337877500001)】；

语种：英文

外文关键词：Metal oxide; Basicity; Transesterification; Biodiesel

摘要：In this paper Zn2+, Co2+, Fe3+ and La3+ were respectively introduced into Mg3Al1 mixed oxides to prepare Mg1Zn2Al1, Mg1CO2Al1, Mg3Al0.6Fe0.4 and Mg3Al0.6La0.4 oxides by calcinations at 773 K. The XRD, XPS, BET, ICP-AES and CO2-TPD characterizations of samples exhibited that the effects of the substitution of trivalent cations (Fe3+, Le(3+)) for Al3+ on the basicity of samples were stronger than the substitution of divalent cations (Zn2+, Co2+) for Mg2+ because of high O2- concentration which were coincident with the FAME yield for these catalysts. La3+ modified catalyst exhibited highest activity in transesterification. (C) 2014 Elsevier B.V. All rights reserved.