Probing the electronic state of nickel-molybdenum sulphide catalysts using ortho-xylene hydrogenation

被引：0

作者：

Fischer, L ^{[1
]}

Harlé, V ^{[1
]}

Kasztelan, S ^{[1
]}

机构：

[1] Inst Francais Petr, Kinet & Catalysis Div, F-92852 Rueil Malmaison, France

来源：

HYDROTREATMENT AND HYDROCRACKING OF OIL FRACTIONS | 1999年 / 127卷

关键词：

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ortho-xylene was hydrogenated at 300 degrees C under 60 bar total pressure over sulphided Ni, Mo and NiMo alumina catalysts. Among the 1,2-dimethylcyclohexanes formed, the ratio of the stereoisomers cis/trans was found to be sensitive to the electronic state of the catalysts' active sites. Applied to a series of NiMo catalysts containing increasing amounts of nickel, the reaction suggests a successive decoration of MoS(2) slabs with the promoter. Hydrogenation of ortho-xylene is a powerful new method for probing electronic effects specifically on active sites of sulphide catalysts under typical hydrotreating conditions.

引用

页码：261 / 268

页数：8

共 25 条

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[22] Mechanochemical synthesis of nanocrystalline nickel-molybdenum compounds and their morphology and application in catalysis: III. Catalytic properties of massive Ni-Mo sulfide catalysts synthesized using mechanochemical activation
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[25] INVESTIGATION OF OXIDE PREDECESSORS OF ACTIVE STRUCTURES IN AL-NI-MO HYDROGENATION CATALYSTS BY MEANS OF EXTRACTIVE SEPARATION OF COMPONENTS .2. STATE OF NICKEL AND MOLYBDENUM IN CATALYSTS AND PRODUCTS FROM SEPARATION OF COMPONENTS, AS DETERMINED BY DIFFUSE REFLECTION AND RAMAN-SPECTROSCOPYR
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