The One-Step Oxidation of Methanol to Dimethoxymethane over Nanostructure Vanadium-Based Catalysts

被引：19

作者：

Guo, Heqin ^{[1
,2
]}

Li, Debao ^{[1
]}

Jiang, Dong ^{[1
]}

Li, Wenhuai ^{[1
]}

Sun, Yuhan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

CATALYSIS LETTERS | 2010年 / 135卷 / 1-2期

关键词：

Nanostructure vanadium-based catalysts; Rapid combustion method; Methanol selective oxidation; Dimethoxymethane; SELECTIVE OXIDATION; COMBUSTION METHOD; IONIC DISPERSION; V2O5; REDUCTION; OXIDE; NO; TEMPERATURE; REACTIVITY; PERFORMANCE;

D O I：

10.1007/s10562-010-0263-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The VOx-TiO2 (VT-RC) and sulfated VOx-TiO2 (VTS-RC) catalysts were prepared by rapid combustion method (RC) and evaluated by the one-step oxidation of methanol to dimethoxymethane (DMM). The results showed that the VT-RC and VTS-RC catalysts were consisted of nano-particles and exhibited pore structure. Compared with the coprecipitated VOx-TiO2 (VT-CP) catalyst, the VT-RC catalyst showed more acidic sites and stronger reducibility. The addition of sulfate into VT catalyst further increased the number of acidic sites and had little effect on the reducibility. The catalytic test showed that the VT-RC catalyst exhibited high DMM selectivity (89.96% at 35% methanol conversion), which was further increased on VTS-RC catalyst (91.76% at 48% methanol conversion), and that was due to the larger number of acidic sites and stronger reducibility on these catalysts.

引用

页码：48 / 56

页数：9

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