FT-IR CHARACTERIZATION OF THE SURFACE-ACIDITY OF DIFFERENT TITANIUM-DIOXIDE ANATASE PREPARATIONS

被引：391

作者：

BUSCA, G ^{[1
]}

SAUSSEY, H ^{[1
]}

SAUR, O ^{[1
]}

LAVALLEY, JC ^{[1
]}

LORENZELLI, V ^{[1
]}

机构：

[1] UNIV GENOVA, FAC INGN, IST CHIM, I-16129 GENOVA, ITALY

来源：

APPLIED CATALYSIS | 1985年 / 14卷 / 1-3期

关键词：

AMMONIA - Adsorption - BENZENE - Adsorption - CARBON DIOXIDE - Adsorption - CARBON MONOXIDE - Hydrogenation - CATALYSTS;

D O I：

10.1016/S0166-9834(00)84358-4

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：

The surface acidity of four different anatase preparations has been studied by FT-IR spectroscopy of adsorbed benzene, ammonia, pyridine, carbon monoxide and dioxide. Results indicate that surface chemistry of anatase, in particular acidity, greatly depends on the preparation of the sample, both through the resulting morphology and the presence of surface impurities. Different morphologies may result in different types of Lewis acid sites. If pure, anatase does not show Bronsted acidity. The presence of silica impurities is responsible for an enhancement of Bronsted acidity on several samples, and may be evaluated by the intensity of an IR band situated near 3730 cm** minus **1.

引用

页码：245 / 260

页数：16

共 43 条

[1]

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[2]

Boehm HP., 1966, ADV CATAL, V16, P179, DOI DOI 10.1016/S0360-0564(08)60354-5

[3] VANADIUM PENTOXIDE TITANIUM DIOXIDE SYSTEM - STRUCTURAL INVESTIGATION AND ACTIVITY FOR THE OXIDATION OF BUTADIENE [J].