Hysteresis Phenomena in Sulfur Dioxide Oxidation over Supported Vanadium Catalysts

Stephen G. Masters, Kim Michael Eriksen, Rasmus Fehrmann

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Catalyst deactivation and hysteresis behavior in industrial SO2-oxidation catalysts have been studied in the temperature region 350-480 C by combined in situ EPR spectroscopy and catalytic activity measurements. The feed gas composition simulated sulfuric acid synthesis gas and wet/dry deNOx'ed flue gas. The vanadium (IV) compound K4(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.
Original languageEnglish
JournalJ. Molec. Catal.
VolumeA
Issue number120
Pages (from-to)227-233
Publication statusPublished - 1997

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