The effect of nickel on the component state and HDS activity of alumina-supported heteropolytungstates

被引：17
|
作者：
Palchevaa, R. [1 ]
Spojakina, A. [1 ]
Tyuliev, G. [1 ]
Jiratova, K. [2 ]
Petrov, L. [1 ]
机构：
[1] Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, Bulgaria
[2] Acad Sci Czech Republ, Inst Chem Proc Fundamentals, Prague 16502, Czech Republic
来源：
KINETICS AND CATALYSIS | 2007年 / 48卷 / 06期
关键词：
D O I：
10.1134/S0023158407060146
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：
Hydrotreating Ni heteropolytungstate catalysts have been prepared by impregnation of gamma-Al2O3 alumina with solutions of H3PW12O40 acid and its Ni salt. The nickel content is varied by adding Ni(NO3)(2) salt. The calcined samples are characterized by BET, IR, TPR, and XPS techniques. The catalytic activity is tested for HDS of thiophene. It is shown that the initial heteropolyanion, its lacunary analog, and nickel substituted heteropolyanion are present on the surface as a result of the interaction between the active component and the alumina support. The mixed NiWS phase formed after sulfidation determines the HDS activity of the catalysts.
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页码：847 / 852
页数：6
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