文献类型：期刊文献

英文题名：KF promoted mesoporous γ-Al2O3 with strong basicity: Preparation, characterization and catalytic activitiy for transesterification to biodiesel

作者：Zheng, Xinyan[2]; Fan, Weiming[2]; Kong, Weiping[1]; Wang, Yudan[1]; Qi, Chenze[1]

机构：[1] Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, 312000, China; [2] Zhejiang Zhenyuan Pharmaceutical Co. LTD., Shaoxing, 312000, China

年份：2014

卷号：55

期号：5

起止页码：592

外文期刊名：Kinetics and Catalysis

收录：EI(收录号：20242616453832)、Scopus(收录号：2-s2.0-84921672163)

语种：英文

外文关键词：Alumina - Aluminum oxide - Catalyst activity - Crystalline materials - Hydrothermal synthesis - Mesoporous materials - Pore size - Potassium hydroxide - Self assembly - Sodium hydroxide - Temperature - Transesterification

外文摘要：The present paper describes the preparation of KF/M-γ-Al2O3, efficient mesoporous solid bases. The procedure involves loading KF into a crystalline mesoporous γ-Al2O3 that was synthesized by the self-assembly of poly-4-vinylpyridine (P4VP) with Al3+ species. The synthesis is based on the strong acid-base interaction, hydrothermal treatment at 180°C and calcination at 550°C. Characterizations using XRD analysis and low temperature N2 adsorption indicated that different amounts of KF could be introduced into crystalline mesoporous γ-Al2O3 to obtain catalysts with high BET surface areas, large pore volumes and uniform pore size distribution. Based on SEM images, KF/M-γ-Al2O3 catalysts have rough surface character and a large nanopore volume. CO2-TPD curves registered for KF/M-γ-Al2O3 contain high temperature peaks, indicating strong basicity of the catalysts. Under the same reaction conditions KF/M-γ-Al2O3 catalysts exhibit much better activities for transesterification to biodiesel than KOH, NaOH, H2SO4, hydrotalcite and CaO. Enhanced activities appear to arise from strong basisity and large BET surface areas. ? 2014 Pleiades Publishing, Ltd.