Hydroconversion of Thiophene Derivatives over Dispersed Ni-Mo Sulfide Catalysts

被引：8

作者：

Vutolkina, A. V. ^{[1
]}

Makhmutov, D. F. ^{[1
]}

Zanina, A. V. ^{[1
]}

Maximov, A. L. ^{[1
,2
]}

Kopitsin, D. S. ^{[3
]}

Glotov, A. P. ^{[1
,3
]}

Egazar'yants, S. V. ^{[1
]}

Karakhanov, E. A. ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia

[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119991, Russia

[3] Natl Res Univ, Gubkin Russian State Univ Oil & Gas, Moscow 119991, Russia

来源：

PETROLEUM CHEMISTRY | 2018年 / 58卷 / 14期

基金：

俄罗斯基础研究基金会;

关键词：

hydrodesulfurization; nickel-molybdenum sulfide catalysts; dispersed catalysts; water-gas shift reaction; IN-SITU DECOMPOSITION; HYDROGENATION CATALYSTS;

D O I：

10.1134/S0965544118140141

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The activity of unsupported Ni-Mo sulfide catalysts is studied in the hydroconversion of benzothiophene and dibenzothiophenes in the temperature range of 340-380 degrees C and at an increased H-2 pressure and in the C?/H-2? system. The structure of dispersed catalysts formed by the in situ high-temperature decomposition of oil-soluble precursors (molybdenum hexacarbonyl, nickel naphthenate) is investigated by TEM. Effects of C?/H-2? molar ratio, water mass content in the system, and CO pressure on the activity of the catalysts and yields of the products are explored. It is shown that, in the C?/H-2? system, the highest conversion of benzothiophene and dibenzothiophene is attained at a temperature of 380 degrees C, a C? pressure of 5MPa, and a C?/H-2? molar ratio of 2. The introduction of alkyl substituents into a dibenzothiophene molecule causes a reduction in the rate of reaction that predominantly occurs via the hydrogenation of aromatic rings. The catalyst activities in hydrogenation under H-2 pressure and in the C?/H-2? system are comparable.

引用

页码：1227 / 1232

页数：6

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