Surface structure of Ni/MgO catalysts: effects of carbon and hydrogen on the reactivity towards CO. HRTEM and FTIR studies

被引：23

作者：

Martra, G. ^{[1
]}

Marchese, L. ^{[1
]}

Arena, F. ^{[2
]}

Parmaliana, A. ^{[2
]}

Coluccia, S. ^{[1
]}

机构：

[1] Univ Turin, Dipartimento Chim Inorgan Chim Fis & Chim Mat, I-10125 Turin, Italy

[2] Univ Messina, Dipartimento Chim Ind, I-98166 Messina, Italy

来源：

TOPICS IN CATALYSIS | 1994年 / 1卷 / 1-2期

关键词：

Ni; carbonyls; carbon;

D O I：

10.1007/BF01379576

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

CO adsorption on high loading Ni/MgO samples treated at 800 and 900 degrees C has been studied by using IR spectroscopy. Linear and bridged monocarbonyls are produced under low CO pressure and the Boudouard reaction occurs producing C, adsorbed on the metal particles, and CO2, stabilized on the MgO matrix. Effects of hydrogen and carbon on surface reactivity have been studied. The morphology of the catalysts and of carbonaceous deposits produced by heating in CO at high temperature are examined by HRTEM.

引用

页码：63 / 73

页数：11

共 17 条

[1] MAGNESIA-SUPPORTED NICKEL-CATALYSTS .1. FACTORS AFFECTING THE STRUCTURE AND MORPHOLOGICAL PROPERTIES [J].