Well-defined dendrimer encapsulated ruthenium SCILL catalysts for partial hydrogenation of toluene in liquid-phase

被引：17
作者：
Antonels, Nathan Charles [1 ,2 ]
Williams, Marc Benjamin [2 ]
Meijboom, Reinout [1 ]
Haumann, Marco [2 ]
机构：
[1] Univ Johannesburg, Res Ctr Synth & Catalysis, Dept Chem, POB 524, ZA-2006 Auckland Pk, South Africa
[2] Univ Erlangen Nurnberg, Lehrstuhl Chem Reaktionstech CRT, Egerlandstr 3, D-91058 Erlangen, Germany
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2016年 / 421卷
基金：
新加坡国家研究基金会;
关键词：
Ruthenium; Dendrimer template; Selective hydrogenation; SCILL catalysts; Ionic liquid; IMIDAZOLIUM IONIC LIQUIDS; NANOPARTICLES; CYCLOHEXENE; BENZENE; SELECTIVITY; DIOXIDE;
D O I：
10.1016/j.molcata.2016.05.010
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：
Dendrimer encapsulated ruthenium nanoparticles (RuDEN) were prepared and immobilized on silica 60 and silica 100. The size of the supported RuDENs was investigated using HRTEM and the generation six G6-RuDEN was found to be the most stable RuDEN upon immobilization. The catalysts were evaluated in the liquid-phase hydrogenation of toluene at a hydrogen pressure of 30 bar and 110 degrees C. Several ionic liquids were used as coatings for the G5-RuSil100 catalysts to give various Solid Catalysts with Ionic Liquid Layer (SCILL). In each case the selectivity towards methylcyclohexenes was increased compared to the uncoated catalyst, accompanied by an expected decrease in activity with the highest methylcyclohexene selectivity being observed when using [EMIM][NTf2] as a coating. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：156 / 160
页数：5
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