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Titolo:
Effect of antimony oxide on magnesium vanadates for the selective oxidation of hydrogen sulfide to sulfur
Autore:
Li, KT; Chi, ZH;
Indirizzi:
Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan Tunghai Univ Taichung Taiwan 40704 ept Chem Engn, Taichung 40704, Taiwan
Titolo Testata:
APPLIED CATALYSIS B-ENVIRONMENTAL
fascicolo: 3, volume: 31, anno: 2001,
pagine: 173 - 182
SICI:
0926-3373(20010517)31:3<173:EOAOOM>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATALYSTS; DEHYDROGENATION; PROPANE;
Keywords:
hydrogen sulfide; oxidation catalysts; sulfur; magnesium vanadates; antimony oxide;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Li, KT Tunghai Univ, Dept Chem Engn, Taichung 40704, Taiwan Tunghai Univ Taichung Taiwan 40704 m Engn, Taichung 40704, Taiwan
Citazione:
K.T. Li e Z.H. Chi, "Effect of antimony oxide on magnesium vanadates for the selective oxidation of hydrogen sulfide to sulfur", APP CATAL B, 31(3), 2001, pp. 173-182

Abstract

The effect of antimony oxide addition to MgV2O6 and Mg3W2O8 was studied inthe selective oxidation of hydrogen sulfide to sulfur. Significant improvements in sulfur selectivity and yield were observed for the uncalcined mechanical mixtures of magnesium vanadates with alpha -Sb2O4 Calcination of themechanical mixtures resulted in the much stronger synergy in catalytic activity and sulfur selectivity. For the uncalcined samples, XRD, TPR and XPS studies indicated that antimony reduction behaviors in the mechanical mixtures differed very much from those in alpha -Sb2O4 alone, suggested that their selectivity improvements might be due to the interactions (probably oxygen transfer) between alpha -Sb2O4 and magnesium vanadates. For the calcinedsamples, XRD results indicated that their better catalytic performances inH,S oxidation were primarily attributed to the formation of VSbO4 compoundfrom antimony oxide and magnesium vanadates. (C) 2001 Elsevier Science B,V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 08:57:20