LOW-TEMPERATURE CO ADSORPTION ON CU-2+/TIO2 CATALYSTS

被引：31

作者：

KANTCHEVA, MM ^{[1
]}

HADJIIVANOV, KI ^{[1
]}

DAVYDOV, AA ^{[1
]}

BUDNEVA, AA ^{[1
]}

机构：

[1] NOVOSIBIRSK CATALYSIS INST,NOVOSIBIRSK,USSR

来源：

APPLIED SURFACE SCIENCE | 1992年 / 55卷 / 01期

关键词：

D O I：

10.1016/0169-4332(92)90380-G

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：

Low-temperature CO adsorption on a Cu2+/TiO2 catalyst prepared by ion exchange is studied by IR spectroscopy. It is established that adsorption of CO at 77 K results in formation of Cu2+-CO carbonyls differing in the localization of the Cu2+ ions on the anatase faces. The increase of temperature in a CO atmosphere causes reduction of Cu2+- only Cu+-CO being observed at room temperature. CO adsorption at 293 K is accompanied by rapid reduction of copper(II) ions. A strong effect of anatase on the adsorbed copper ions, resulting in stabilization of their divalent state at 77 K, is established.

引用

页码：49 / 55

页数：7

共 31 条

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