Comparison of the Activities of Pd(0) and Pd(I) in Low-Temperature Oxidation of Carbon Monoxide on the Pd/γ-Al2O3 Catalyst

被引：1

作者：

Ustyugov, A., V ^{[1
]}

Korypaeva, V. V. ^{[1
]}

Obeidat, Z. Z. ^{[1
]}

Putin, A. Yu ^{[1
]}

Shvarts, A. L. ^{[1
]}

Bruk, L. G. ^{[1
]}

机构：

[1] MIREA Russian Technol Univ, Lomonosov Inst Fine Chem Technol, 86 Vernadsky Ave, Moscow 119571, Russia

来源：

KINETICS AND CATALYSIS | 2022年 / 63卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

oxidation of carbon monoxide; palladium acetate; alumina; kinetics; air oxygen; catalyst deactivation; XPS; palladium (I; 0); specific activity; COMPLEXES; MECHANISM; KINETICS; SURFACE;

D O I：

10.1134/S0023158422020112

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 oxidation of carbon monoxide on the Pd/gamma-Al2O3 catalyst has been studied at room temperature and atmospheric pressure of air containing 100 mg/m(3) CO. The catalyst became gradually deactivated during the process. Storage of the partially deactivated catalyst in air for 10-12 h resulted in a complete recovery of activity. According to XPS data, the material obtained by depositing Pd-3(OAc)(6) on gamma-Al2O3 before contact with CO contains palladium compounds in the oxidation states I and 0. The specific catalytic activity of palladium compounds in different oxidation states was evaluated based on the correlation between the catalytic activity and the content of Pd(I) and Pd(0) compounds, and it was shown that the activity of the former is higher than that of the latter.

引用

页码：226 / 233

页数：8

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