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
收藏
页码：227 / 233
页数：7
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