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Supported rhenium sulfide catalysts in thiophene and 4,6-dimethyldibenzothiophene hydrodesulfurization: Effect of acidity of the support over activities
被引:19
|作者:
Sepulveda, C.
[2
]
Belliere, V.
[1
]
Laurenti, D.
[1
]
Escalona, N.
[2
]
Garcia, R.
[2
]
Geantet, C.
[1
]
Vrinat, M.
[1
]
机构:
[1] Univ Lyon 1, IRCELYON, CNRS, UMR 5256, F-69626 Villeurbanne, France
[2] Univ Concepcion, Fac Ciencias Quim, Concepcion, Chile
关键词:
Rhenium sulfide;
Hydrodesulfurization;
Zeolites;
Acidity;
Support effect;
TRANSITION-METAL SULFIDES;
HYDROTREATING CATALYSTS;
HYDROGENATION PROPERTIES;
ZEOLITES;
ALKYLDIBENZOTHIOPHENES;
DIBENZOTHIOPHENE;
SELECTIVITY;
REACTIVITY;
MECHANISM;
SULFUR;
D O I:
10.1016/j.apcata.2010.12.008
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:
Three different zeolites, gamma-alumina and silica supports were used to prepare ReS2 catalysts by incipient wetness impregnation of ammonium perrhenate (NH4ReO4). The catalysts were characterized and tested in the hydrodesulfurization (HDS) of thiophene in an atmospheric fixed bed reactor, and of the 4,6-dimethyldibenzothiophene (4,6-DMDBT) HDS in a high pressure stirred tank reactor. The results showed that the acidity of the zeolites has a detrimental influence over hydrodesulfurization activity of the Re sulfide, contrarily to the enhancement observed previously with zeolite-supported Mo sulfide catalysts. The catalyst prepared over a non-acidic zeolite (HSZ-390) was found very efficient in thiophene HDS and comparable to silica for 4,6-DMDBT. (C) 2010 Elsevier B.V. All rights reserved.
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页码:288 / 293
页数:6
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