Dibenzothiophene hydrodesulfurization over synthesized MOS2 catalysts

被引:36
作者
Farag, H [1 ]
Sakanishi, K
Kouzu, M
Matsumura, A
Sugimoto, Y
Salto, I
机构
[1] Mansoura Univ, Fac Sci, Dept Chem, Mansoura 35516, Egypt
[2] AIST, Inst Energy Utilizat, Ibaraki 3058569, Japan
关键词
hydrodesulfurization; crystallite size; selectivity MoS2; dibenzothiophene;
D O I
10.1016/S1381-1169(03)00445-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
Bulk MoS2 catalysts were prepared starting from various Mo-precursors. The catalytic activity was investigated for hydrodesulfurization (HDS) of dibenzothiophene (DBT) with a batch sampler attached micro-autoclave reactor at 340 degreesC and 3 MPa H-2. In general, HDS activity was found to be inversely proportional to catalysts particle size. An interesting relationship was found between the average number of MoS2 stacked layer and the selectivity of HDS in which it passes through a minimum at small crystallite sizes of ca. 4 nm and then turned up with crystallite sizes larger than 5 nm irrespective of the starting catalyst precursors. Detailed kinetics is discussed. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:399 / 408
页数:10
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