Optimizing activity of tungsten oxides for 1-butene metathesis by depositing silica on γ-alumina support

被引：52

作者：

Liu, Na ^{[1
]}

Ding, Shilei ^{[1
]}

Cui, Yuming ^{[1
]}

Xue, Nianhua ^{[1
]}

Peng, Luming ^{[1
]}

Guo, Xuefeng ^{[1
]}

Ding, Weiping ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, Nanjing 210093, Jiangsu, Peoples R China

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2013年 / 91卷 / 03期

基金：

国家教育部博士点专项基金资助;

关键词：

1-Butene; Metathesis; Silica modified gamma-Al2O3; Tungsten oxide; WO3/SIO2; CATALYST; SKELETAL ISOMERIZATION; INDUSTRIAL-ENVIRONMENT; PROPENE METATHESIS; RAMAN-SPECTROSCOPY; OLEFIN METATHESIS; WO3; CATALYSTS; REDUCTION; 2-BUTENE; SURFACE;

D O I：

10.1016/j.cherd.2012.08.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A series of catalysts made of tungsten oxide loaded on SiO2, gamma-Al2O3, SiO2-Al2O3 and silica deposited gamma-alumina are tested for 1-butene metathesis. Among these catalysts, the catalyst 6W/20SiO(2)/Al2O3 gives the highest activity for 1-butene metathesis reaction with 1-butene conversion up to 71 mol% and the yield of propene up to 21 mol%. The excellent catalytic activity is related to the moderate dispersion of tungsten oxide and the suitable acidity of the support. The dispersion of WO species and the acidity of supports were studied by characterization of XRD, Raman spectra, UV-vis, H-2-TPR and NH3-TPD in detail. The surface properties of silica modified gamma-alumina leads to the moderate aggregation of supported tungsten oxide, which appears to be more effective for gamma-butene metathesis at the low temperature of 453K. Optimized activity was realized by tuning the dispersion of tungsten species on silica deposited alumina. (C) 2012 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：573 / 580

页数：8

共 33 条

[1] ACTIVITY OF RE2O7/SIO2.AL2O3 CATALYSTS FOR PROPENE METATHESIS AND THE INFLUENCE OF ALKYLTIN PROMOTORS [J].