The influence of strongly reducing conditions on strong metal-support interactions in Cu/ZnO catalysts used for methanol synthesis

被引：119

作者：

d'Alnoncourt, RN ^{[1
]}

Xia, X ^{[1
]}

Strunk, J ^{[1
]}

Löffler, E ^{[1
]}

Hinrichsen, O ^{[1
]}

Muhler, M ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Lab Ind Chem, D-44780 Bochum, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2006年 / 8卷 / 13期

关键词：

D O I：

10.1039/b515487a

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：

A systematic series of binary and ternary copper catalysts was investigated using the methanol synthesis reaction at atmospheric pressure. Strong metal-support interactions between copper and zinc oxide induced by strongly reducing conditions were probed by the adsorption of carbon monoxide, which was monitored qualitatively and quantitatively by a combination of microcalorimetry, temperature-programmed desorption experiments and Fourier transform infrared spectroscopy. For the zinc oxide-containing catalysts, the pretreatment in. owing carbon monoxide at 493 K resulted in a severe decoration of the copper metal particles with ZnOx adspecies, whereas after methanol synthesis at 493 K the state of the copper was essentially identical to that seen after hydrogen reduction. Copper was always found to be present in its zero-valent state.

引用

页码：1525 / 1538

页数：14

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