Thiolation of dimethyl sulfide to methanethiol over WO3/ZrO2 catalysts

被引：23

作者：

Chen, Shiping ^{[3
]}

Wang, Weiming ^{[3
]}

Zhang, Yuanhua ^{[3
]}

Wei, Yucai ^{[1
,2
]}

Fang, Weiping ^{[3
]}

Yang, Yiquan ^{[1
,2
]}

机构：

[1] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Natl Engn Lab Green Chem Prod Alcohols Ethers & E, Xiamen 361005, Peoples R China

[3] Xiamen Univ, Dept Chem & Biochem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2012年 / 365卷

关键词：

Dimethyl sulfide; Methanethiol; Thiolation; WO3/ZrO2; K2MOS4/SIO2; CATALYST; K2MOO4; H2S-RICH SYNGAS; ACID SITES; ZIRCONIA; DEHYDRATION;

D O I：

10.1016/j.molcata.2012.08.009

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 thiolation of dimethyl sulfide with H2S over a variety of tungsten-zirconia (WO3/ZrO2) catalysts with different contents of WO3 was studied. The maximum yield of methanethiol was obtained at the reaction temperature of 633 K in the presence of 10 wt.%WO3/ZrO2 catalyst. XRD, BET and TPD characterization results reveal that supporting WO3 species on ZrO2 gives rise to the improvement of both in structure stability and surface acidity. The MT yield increased first and then decreased with the increase of reaction temperature for all of the catalysts due to the decomposition of methanethiol and dimethyl sulfide. The optimum loading of WO3 was found to be 5-10 wt.% (with a surface density of 3.5-4.5 w-atom nm(-2)). Furthermore, the WO3/ZrO2 catalyst exhibits high resistance to water. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：60 / 65

页数：6

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