Promotional Effect of Ni in the Selective Gas-Phase Hydrogenation of Chloronitrobenzene over Cu-based Catalysts

被引：17

作者：

Cardenas-Lizana, Fernando ^{[2
]}

Bridier, Blaise ^{[1
]}

Shin, Choong Catherine Kai ^{[2
,3
]}

Perez-Ramirez, Javier ^{[1
]}

Kiwi-Minsker, Lioubov ^{[2
]}

机构：

[1] ETH, Dept Chem & Appl Biosci, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland

[2] Ecole Polytech Fed Lausanne, Grp Catalyt React Engn GGRC ISIC EPFL, CH-1015 Lausanne, Switzerland

[3] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 119260, Singapore

来源：

CHEMCATCHEM | 2012年 / 4卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

copper; chemoselectivity; chloroaniline; chloronitrobenzene; hydrogenation; nickel; HYDROTALCITE-LIKE COMPOUNDS; METHANOL SYNTHESIS; P-CHLORONITROBENZENE; COPPER-CATALYSTS; NITROUS-OXIDE; CINNAMALDEHYDE; PROPYNE; SURFACE; CHLOROANILINE; AU/AL2O3;

D O I：

10.1002/cctc.201100470

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：

We present 100?% selectivity to p-chloroaniline through the continuous gas-phase (atmospheric pressure; T=393523 K) catalytic hydrogenation of p-chloronitrobenzene over an activated Cu?Al (molar Cu/Al ratio 3:1) hydrotalcite. The synthesis by continuous co-precipitation and application of a Cu?Ni?Al (atomic Cu/Ni/Al ratio 2.75:0.25:1) catalyst is also described. Temperature-programmed reduction in hydrogen and XPS analyses of the ternary catalyst suggest Cu?Ni interaction with no evidence of (bulk) alloy formation (based on XRD). Under the same reaction conditions, Cu?Ni?Al exhibited a higher (by up to a two-fold) hydrogenation rate when compared to Cu?Al, while the exclusive nitro-group reduction was maintained.

引用

页码：668 / 673

页数：6

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