Direct synthesis of methanethiol from H2S-rich syngas over sulfided Mo-based catalysts

被引：46

作者：

Chen, Aiping ^{[1
]}

Wang, Qi ^{[1
]}

Li, Qiaoling ^{[1
]}

Hao, Yingjuan ^{[1
]}

Fang, Weiping ^{[1
]}

Yang, Yiquan ^{[1
]}

机构：

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

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2008年 / 283卷 / 1-2期

关键词：

methanethiol synthesis; hydrogen sulfide; syngas; mo-based catalysts; potassium; cobalt; hydrogenation;

D O I：

10.1016/j.molcata.2007.12.014

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 direct synthesis of methanethiol from H2S-rich syngas was investigated over sulfided Mo-based catalysts supported on SiO2. K-promoted MO/SiO2 catalysts exhibited a high activity for the synthesis of CH3SH. The incorporation of cobalt into the K-Mo/SiO2 catalyst increased the catalytic activity, but slightly decreased the selectivity to methanethiol. The selected catalysts were characterized by using X-ray diffraction (XRD), CO temperature-programmed desorption (CO-TPD), electron spin resonance (ESR), and X-ray photoelectron spectroscopy (XPS) techniques. The results showed that the potassium interacts with Mo component and increases the active sites for the CH3SH synthesis by changing the concentration of Mo5+ species after sulfidation. A mechanism for the synthesis of CH3SH was proposed. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：69 / 76

页数：8

共 58 条

[1] TEMPERATURE-PROGRAMMED SULFIDING OF MOO3/AL2O3 CATALYSTS [J].

ARNOLDY, P ;

VANDENHEIJKANT, JAM ;

DEBOK, GD ;

MOULIJN, JA .

JOURNAL OF CATALYSIS, 1985, 92 (01) :35-55

[2] ALCOHOL SYNTHESIS FROM SYNGAS OVER SUPPORTED MOLYBDENUM CATALYSTS [J].

AVILA, Y ;

KAPPENSTEIN, C ;

PRONIER, S ;

BARRAULT, J .

APPLIED CATALYSIS A-GENERAL, 1995, 132 (01) :97-109

[3] XPS investigation of preferential sputtering of S from MoS2 and determination of MoSx stoichiometry from Mo and S peak positions [J].

Baker, MA ;

Gilmore, R ;

Lenardi, C ;

Gissler, W .

APPLIED SURFACE SCIENCE, 1999, 150 (1-4) :255-262

[4] SYNTHESIS OF METHYL MERCAPTAN FROM CARBON OXIDES AND H2S WITH TUNGSTEN-ALUMINA CATALYSTS [J].

BARRAULT, J ;

BOULINGUIEZ, M ;

FORQUY, C ;

MAUREL, R .

APPLIED CATALYSIS, 1987, 33 (02) :309-330

[5] CATALYTIC REDUCTION OF CO WITH HYDROGEN-SULFIDE .2. ADSORPTION OF H2O AND H2S ON ANATASE AND RUTILE [J].

BECK, DD ;

WHITE, JM ;

RATCLIFFE, CT .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (14) :3123-3131

[6] High temperature calcined K-MoO3/γ-Al2O3 catalysts for mixed alcohols synthesis from syngas:: Effects of Mo loadings [J].

Bian, GZ ;

Fan, L ;

Fu, YL ;

Fujimoto, K .

APPLIED CATALYSIS A-GENERAL, 1998, 170 (02) :255-268

[7] Reaction stability and structure studies of sulfided K-MoO3/gamma-Al2O3 catalyst for the synthesis of mixed alcohols [J].

Bian, GZ ;

Fu, YL ;

Yamada, M .

APPLIED CATALYSIS A-GENERAL, 1996, 144 (1-2) :79-91

[8] An XPS study of the surface modification of natural MoS2 following treatment in an RF-oxygen plasma [J].

Brown, NMD ;

Cui, NY ;

McKinley, A .

APPLIED SURFACE SCIENCE, 1998, 134 (1-4) :11-21

[9] Molecular aspects of the H2 activation on MoS2 based catalysts the role of dynamic surface arrangements [J].

Byskov, LS ;

Bollinger, M ;

Norskov, JK ;

Clausen, BS ;

Topsoe, H .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 163 (1-2) :117-122

[10] Alkali effects on molybdenum oxide catalysts for the oxidative dehydrogenation of propane [J].

Chen, KD ;

Xie, SB ;

Bell, AT ;

Iglesia, E .

JOURNAL OF CATALYSIS, 2000, 195 (02) :244-252

← 1 2 3 4 5 6 →