Hysteresis phenomena in sulfur dioxide oxidation over supported vanadium catalysts

被引：12

作者：

Masters, SG ^{[1
]}

Eriksen, KM ^{[1
]}

Fehrmann, R ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT CHEM,DK-2800 LYNGBY,DENMARK

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1997年 / 120卷 / 1-3期

关键词：

vanadium based SLP catalysts; hysteresis; deactivation; SO2; oxidation; flue gas desulfurization;

D O I：

10.1016/S1381-1169(96)00407-4

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：

Catalyst deactivation and hysteresis behavior in industrial SO2-oxidation catalysts have been studied in the temperature region 350-480 degrees C by combined in situ EPR spectroscopy and catalytic activity measurements. The feed gas compositions simulated sulfuric acid synthesis gas and wet/dry deNO(x)'ed flue gas. The vanadium (IV) compound K-4(VO)(3)(SO4)(5) precipitated during all the investigated conditions hence causing catalyst deactivation. Hysteresis behavior of both the catalytic activity and the V(IV) content was observed during reheating.

引用

页码：227 / 233

页数：7

共 20 条

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