ON THE EFFECT OF DOPANTS AND ADDITIVES ON THE STATE OF SURFACE VANADYL CENTERS OF VANADIA-TITANIA CATALYSTS

被引：75

作者：

RAMIS, G ^{[1
]}

BUSCA, G ^{[1
]}

BREGANI, F ^{[1
]}

机构：

[1] CRTN, DSR, ENEL, I-20134 MILAN, ITALY

来源：

CATALYSIS LETTERS | 1993年 / 18卷 / 03期

关键词：

VANADIA-TITANIA; DOPANTS; FT-IR SPECTROSCOPY; SCR OF NOX;

D O I：

10.1007/BF00769450

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 effect of dopants on the V=O stretching frequencies of vanadyls on low-V-loading vanadia-titania catalysts is shown. Alkali and alkali-earth metal cations decrease nu(V=O) while oxo-anions like sulphates, phosphates and arsenates increase it. Acid-type cations, like Al3+, MoO4+ and WO4+ have a small effect. A relation with the effect of these dopants on the catalytic activity in the SCR of NO(x) is proposed.

引用

页码：299 / 303

页数：5

共 26 条

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