文献类型：期刊文献

英文题名：Molybdenum containing cage like mesoporous KIT-5 for enhanced catalytic conversion of 1-butene and ethylene to propene

作者：Tao, Kai[1];Ma, Qingxiang[4];Tsubaki, Noritatsu[3];Zhou, Shenghu[2];Han, Lei[1]

机构：[1]Ningbo Univ, Sch Mat Sci & Chem Engn, Inst Inorgan Mat, Ningbo 315211, Zhejiang, Peoples R China;[2]E China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[3]Toyama Univ, Sch Engn, Dept Appl Chem, Gofuku 3190, Toyama 9308555, Japan;[4]Ningxia Univ, Coll Chem & Chem Engn, State Key Lab Cultivat Base Nat Gas Convers, Yinchuan 750021, Peoples R China

年份：2016

卷号：416

起止页码：39

外文期刊名：JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

收录：;EI(收录号：20160902024758);WOS:【SCI-EXPANDED(收录号:WOS:000373543700005)】；

基金：The authors are grateful for the financial support from the National Natural Science Foundation of China (Grant Nos. 21471086, 51572272), Natural Science Foundation of Ningbo (Grant. No. 2015A610052), the Social Development Foundation of Ningbo (No. 2014C50013), and the K.C. Wong Magna Fund in Ningbo University.

语种：英文

外文关键词：Mo-KIT-5; Mesoporous; Isomerization; Metathesis; Propene

摘要：Molybdenum containing three-dimensional (3D) cage-like mesoporous KIT-5 (Mo-KIT-5) materials with various Si/Mo ratios was successfully prepared by one-pot hydrothermal synthesis. The obtained materials were characterized by various techniques, such as XRD, N-2 physisorption, TEM, FTIR, UV-DRS, XPS, and NH3-TPD. Characterization results revealed that molybdenum species could be finely dispersed in the framework of KIT-5 without disturbing long-range ordering at Si/Mo ratios higher than 15, while collapse of mesoporous structure and presence of bulk MoO3 was observed for Mo-KIT-5-5 sample with a Si/Mo ratio of 5. Mo-contained materials were investigated in catalytic conversion of 1-butene and ethylene to propene. Among all of Mo-KIT-5 materials studied, Mo-KIT-5-40 with Si/Mo ratio of 40 exhibited best catalytic performance caused by the fact that it processed superior textural properties, substantial active Mo species, and appropriate amount of acidic sites. Further decreasing the Si/Mo ratio resulted in declined activity due to the presence of extraframework Mo species. It was found that doped Mo-KIT-5-40 showed better catalytic activity than control supported Mo/KIT-5-40 and Mo/SiO2-40 catalysts with same Mo loading due to the highly dispersed active Mo species on the mesoporous framework. Moreover, Mo-KIT-5 was also superior to other Mo containing mesoporous materials, such as Mo-SBA-15 with two-dimensional pores and Mo-KIT-6 with three-dimensional cylindrical pores, implying the advantage of this kind of ordered 3D cage-like mesoporous materials in this reaction. (C) 2016 Elsevier B.V. All rights reserved.