Naphthalene hydrogenation over nickel–tungsten sulfide catalysts synthesized in situ from DMSO–hydrocarbon medium emulsions

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• 作者：I. A. Sizova ; S. V. Antonov ; S. I. Serdyukov ; A. L. Maksimov
• 关键词：nickel–tungsten sulfide catalysts ; hydrodearomatization ; in situ synthesis of catalysts ; nonaqueous emulsions ; DMSO
• 刊名：Petroleum Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：57
• 期：1
• 页码：66-70
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Industrial Chemistry/Chemical Engineering;
• 出版者：Pleiades Publishing
• ISSN：1555-6239
• 卷排序：57

文摘

A method for synthesizing unsupported nickel–tungsten sulfide hydrodearomatization catalysts by breaking SPAN-80 surfactant-stabilized nonaqueous emulsions of solutions of different precursors in dimethyl sulfoxide (DMSO) in situ in a hydrocarbon medium has been first studied using ammonium thiotungstate (NH₄)₂WS₄ and 1-butyl-1-methylpiperidinium nickel thiotungstate [BMPip]₂Ni[WS₄]₂ as precursors and nickel nitrate hexahydrate as a nickel source. The synthesized nickel–tungsten catalysts have been characterized by TEM and XPS. The catalytic activity of the in situ synthesized Ni–W particles in naphthalene hydrogenation has been studied at temperatures of 350–400°C and a hydrogen pressure of 5.0 MPa.