IR CHARACTERIZATION OF SULFATED ZIRCONIA DERIVED FROM ZIRCONIUM SULFATE

被引：59

作者：

PLATERO, EE

MENTRUIT, MP

机构：

[1] Departamento de Química, Universidad de las Islas Baleares, Palmade de Mallorca

来源：

CATALYSIS LETTERS | 1995年 / 30卷 / 1-4期

关键词：

SULFATED ZIRCONIA; INFRARED SPECTROSCOPY; CO ADSORPTION;

D O I：

10.1007/BF00813670

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：

Surface characterization of a sulfate-derived zirconia sample containing approximately 1 wt% S was performed by IR spectroscopy. Several types of sulfate groups were detected which are resistant to heating in vacuo up to 973 K. By using CO as a spectroscopic probe, two kinds of Lewis acid sites were identified which were assigned to surface Zr4+ ions in different environments. Comparison with corresponding data for a nearly sulfate-free zirconia sample showed that sulfated zirconia has an enhanced Lewis acidity.

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页码：31 / 39

页数：9

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