Liquid-phase hydrogenation of benzaldehyde over Pd-Ru/C catalysts: Synergistic effect between supported metals

被引：55

作者：

Mironenko, Roman M. ^{[1
,2
]}

Belskaya, Olga B. ^{[1
,3
]}

Gulyaeva, Tatyana I. ^{[1
]}

Trenikhin, Mikhail V. ^{[1
]}

Nizovskii, Alexander I. ^{[3
,4
]}

Kalinkin, Alexander V. ^{[4
]}

Bukhtiyarov, Valerii I. ^{[4
]}

Lavrenov, Alexander V. ^{[1
]}

Likholobov, Vladimir A. ^{[1
,3
,5
]}

机构：

[1] Russian Acad Sci, Inst Hydrocarbons Proc, Siberian Branch, Neftezavodskaya St 54, Omsk 644040, Russia

[2] Dostoevsky Omsk State Univ, Mira Ave 55a, Omsk 644077, Russia

[3] Omsk State Tech Univ, Mira Ave 11, Omsk 644050, Russia

[4] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Lavrentieva Ave 5, Novosibirsk 630090, Russia

[5] Russian Acad Sci, Omsk Sci Ctr, Siberian Branch, Marksa Ave 15, Omsk 644024, Russia

来源：

CATALYSIS TODAY | 2017年 / 279卷

基金：

俄罗斯基础研究基金会;

关键词：

Benzaldehyde; Catalytic hydrogenation; Bimetallic catalysts; Carbon supports; Synergistic effect; SELECTIVE HYDROGENATION; RUTHENIUM CATALYSTS; ALLOY NANOPARTICLES; PALLADIUM CATALYSTS; ELECTRONIC-PROPERTIES; BIMETALLIC CATALYSTS; PLATINUM CATALYSTS; CARBONYL-COMPOUNDS; CINNAMALDEHYDE; PERFORMANCE;

D O I：

10.1016/j.cattod.2016.07.022

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Bimetallic Pd-Ru/C catalysts prepared with different carbon supports were shown to be much more active in the liquid-phase hydrogenation of benzaldehyde in comparison with their monometallic analogs. In the case of systems based on nanoglobular carbon, the synergistic effect manifested itself as an increased selectivity for benzyl alcohol (86-90%) at a complete conversion of benzaldehyde, whereas the catalysts containing carbon nanotubes were highly active in hydrogenolysis of the C-O bonds, which caused an increased yield of toluene (up to 56%). The synergistic effect between palladium and ruthenium in the reaction under study can be related to the changes in the electronic and dispersion state of the supported metals upon interaction with each other and formation of Pd-Ru alloy. In terms of the electronic factor, the enhanced catalytic performance of bimetallic systems can be a result of facilitation of electrophilic activation of the C=O bond in benzaldehyde owing to an increased fraction of the electron-deficient palladium species. The nature of carbon support was shown to affect the electronic state of supported metals and thus catalytic properties of bimetallic Pd-Ru/C systems. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：2 / 9

页数：8