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Catalytic hydrogenation of aromatic nitro compounds by functionalized ionic liquids-stabilized nickel nanoparticles in aqueous phase:The influence of anions

查看全文 作　　者：HU [1]Yu;YU [1]YinYin;ZHAO [1]XiuGe;YANG [2]HanMing;FENG [1]Bo;LI [1]Huan;QIAO [1]YunXiang;HUA [1]Li;PAN [1]ZhenYan;HOU [1]ZhenShan 高影响力作者 机构地区：[1]Key Laboratory for Advanced Materials,Research Institute of Industrial Catalysis,East China University of Science and Technology,Shanghai 200237,China;[2]Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission,Ministry of Education,South-Central University for Nationalities,Wuhan 430074,China高影响力机构 出　　处：《Science China Chemistry》索引2010年第53卷第7期,共8页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (20773037);East China University of Science and Technology (YJ0142136);the Commission of Science and Technology of Shanghai Municipality (07PJ14023) 摘　　要：Two kinds of nickel nanoparticles (NPs) well-dispersed in aqueous phase have been conveniently prepared by reducing nickel(II) salt with hydrazine in the presence of amino group (-NH2) functionalized ionic liquids:1-(3-aminopropyl)-2,3-dimethylimidazolium bromide ([AMMIM][Br]) and 1-(3-aminopropyl)-2,3-dimethylimidazolium acetate ([AMMIM][AcO]).The Ni(0) particles are composed of smaller ones which assemble in a blackberry-like shape.The Ni nanoparticles stabilized with [AMMIM][AcO] are much larger than those stabilized with [AMMIM][Br],and the former unexpectedly give much higher activity in the selective hydrogenation of citral and nitrobenzene (NB) in aqueous phase.The Ni(0) nanocatalysts dispersed in aqueous phase are stable enough to be reused at least five times without significant loss of catalytic activity and selectivity during the catalytic recycles. 关 键 词：functionalized ionic liquid nickel nanoparticles aqueous phase selective hydrogenation
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