The role of hydrotalcite-modified porous alumina spheres in bimetallic RuPd catalysts for selective hydrogenation

被引：7

作者：

Chen, Jiali ^{[1
]}

Guo, Li ^{[1
]}

Zhang, Fazhi ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2014年 / 55卷

基金：

中国国家自然科学基金;

关键词：

Supported bimetallic catalysts; Layered double hydroxides; Selective hydrogenation; Dimethyl terephthalte; Dimethyl cyclohexane-1,4-dicarboxylate; HETEROGENEOUS CATALYST; NANOPARTICLES; SN;

D O I：

10.1016/j.catcom.2014.05.017

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：

By utilizing alumina previously modified by in-situ growth of varying amounts of hydrotalcites, a series of heterogeneous bimetallic catalysts with constant low loading (0.3 wt%) and identical Ru:Pd ratio (1:1) were prepared based on co-impregnation for selective hydrogenation of dimethyl terephthalate to dimethyl cyclohexane-1,4-dicarboxylate. Nanoparticles confined in the reticular structure were observed. The resulting candidates show the superior catalytic activity over that supported on the unmodified alumina, and reach the highest in the optimized sample RuPd/HTc-Al2O3-1. This promotion and optimization effect could be ascribed to the improved dispersion and more supply of hydrogen and acid sites especially with medium strength. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：19 / 23

页数：5

共 32 条

[1] Synthesis of Al-rich hydrotalcite-like compounds by using the urea hydrolysis reaction-control of size and morphology [J].

Adachi-Pagano, M ;

Forano, C ;

Besse, JP .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (08) :1988-1993

[2] Ru-Pt core-shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen [J].

Alayoglu, Selim ;

Nilekar, Anand U. ;

Mavrikakis, Manos ;

Eichhorn, Bryan .

NATURE MATERIALS, 2008, 7 (04) :333-338

[3]

Brunner M., 2007, US Patent, Patent No. 7208545

[4]

Chen J.L, UNPUB

[5] Preparation of layered double hydroxides and their applications as additives in polymers, as precursors to magnetic materials and in biology and medicine [J].

Evans, DG ;

Duan, X .

CHEMICAL COMMUNICATIONS, 2006, (05) :485-496

[6] Enhanced metal dispersion and hydrodechlorination properties of a Ni/Al2O3 catalyst derived from layered double hydroxides [J].

Feng, Jun-Ting ;

Lin, Yan-Jun ;

Evans, David G. ;

Duan, Xue ;

Li, Dian-Qing .

JOURNAL OF CATALYSIS, 2009, 266 (02) :351-358

[7] Design, synthesis, and use of cobalt-based Fischer-Tropsch synthesis catalysts [J].

Iglesia, E .

APPLIED CATALYSIS A-GENERAL, 1997, 161 (1-2) :59-78

[8] Hydrogen uptake of platinum-doped graphite nanoribers and stochastic analysis of hydrogen spillover [J].

Jain, Puja ;

Fonseca, Dania A. ;

Schaible, Erik ;

Lueking, Angela D. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (04) :1788-1800

[9]

Jean-Baptiste d'Espinose de la C., 1995, J AM CHEM SOC, V117, P11471

[10] Recent progress in synergistic catalysis over heterometallic nanoparticles [J].

Jiang, Hai-Long ;

Xu, Qiang .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (36) :13705-13725

← 1 2 3 4 →