ALKALI ADDITION TO SILICA-SUPPORTED PALLADIUM - INFRARED INVESTIGATION OF THE CARBON-MONOXIDE CHEMISORPTION

被引：61

作者：

PITCHON, V ^{[1
]}

PRIMET, M ^{[1
]}

PRALIAUD, H ^{[1
]}

机构：

[1] UNIV CLAUDE BERNARD LYON 1, INST RECH CATALYSE,CNRS,LAB PROPRE, 2 AVE ALBERT EINSTEIN, F-69626 VILLEURBANNE, FRANCE

来源：

APPLIED CATALYSIS | 1990年 / 62卷 / 02期

关键词：

alkali addition; carbon monoxide adsorption; infrared spectroscopy; palladium/silica; syngas conversion;

D O I：

10.1016/S0166-9834(00)82255-1

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：

Alkali nitrates (lithium, sodium, potassium, caesium) are added to a Pdn+/SiO2 precursor. After reduction under hydrogen the addition leads to a moderate increase in the metallic particle size but to drastic changes in the infrared spectrum of carbon monoxide adsorbed on palladium. A direct interaction between the alkaline ion and carbon monoxide bonded to palladium is invoked. The extent of the interaction increases with the reduction temperature. The particular behaviour of lithium-doped solids is discussed. © 1990.

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页码：317 / 334

页数：18

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