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Influence of platinum on ceria sulfation

被引：57
作者：
Bazin, P
Saur, O
Lavalley, JC
Blanchard, G
Visciglio, V
Touret, O
机构：
[1] UNIV CAEN,ISMRA,URA CNRS 414,CATALYSE & SPECTROCHIM LAB,F-14050 CAEN,FRANCE
[2] RHONE POULENC RECH,CTR RECH,F-93308 AUBERVILLIERS,FRANCE
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 1997年 / 13卷 / 3-4期
关键词：
Pt/CeO2; sulfation; sulfate stability; sulfate reducibility; FTIR; thermogravimetry;
D O I：
10.1016/S0926-3373(97)00004-0
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 influence of platinum on ceria sulfation has been studied using thermogravimetry and infrared spectroscopy. The same types of sulfate species - surface and bulk-like species - are evidenced with or without Pt. Pt does not modify the thermal stability of both types of sulfate. It favors sulfate formation on low-surface-area CeO2 samples. The reducibility of sulfate by H-2 is promoted by Pt irrespective of the types of sulfate formed on ceria. H2S, which is formed by H-2 reduction of sulfate, partly remains on the catalyst. It is adsorbed not only on the oxide but also on Pt. Sulfur poisoning of Pt has been shown by IR study of CO adsorption. (C) 1997 Elsevier Science B.V.
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收藏
页码：265 / 274
页数：10
相关论文
共 20 条
[11]   SULFUR POISONING OF PT/AL2O3 CATALYSTS .1. DETERMINATION OF SULFUR COVERAGE BY INFRARED-SPECTROSCOPY [J].
MELCHOR, A ;
GARBOWSKI, E ;
MATHIEU, MV ;
PRIMET, M .
REACTION KINETICS AND CATALYSIS LETTERS, 1985, 29 (02) :371-377
[12]  
MONROE DR, 1991, STUD SURF SCI CATAL, V71, P593, DOI 10.1016/S0167-2991(08)63005-0
[13]   DETERMINATION OF THE ACCESSIBLE METALLIC SURFACE OF SUPPORTED PLATINUM - QUANTITATIVE INFRARED SPECTROSCOPIC STUDY OF CARBON-MONOXIDE ADSORPTION [J].
PRIMET, M ;
ELAZHAR, M ;
FRETY, R ;
GUENIN, M .
APPLIED CATALYSIS, 1990, 59 (01) :153-163
[14]   RECENT STUDIES IN HYDROGEN AND OXYGEN SPILLOVER AND THEIR IMPACT ON CATALYSIS [J].
TEICHNER, SJ .
APPLIED CATALYSIS, 1990, 62 (01) :1-10
[15]   COMPARATIVE-STUDY OF SO-2 ADSORPTION ON METAL-OXIDES [J].
WAQIF, M ;
SAAD, AM ;
BENSITEL, M ;
BACHELIER, J ;
SAUR, O ;
LAVALLEY, JC .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1992, 88 (19) :2931-2936
[16]   NATURE AND MECHANISM OF FORMATION OF SULFATE SPECIES ON COPPER ALUMINA SORBENT CATALYSTS FOR SO2 REMOVAL [J].
WAQIF, M ;
SAUR, O ;
LAVALLEY, JC ;
PERATHONER, S ;
CENTI, G .
JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (10) :4051-4058
[17]  
WAQIF M, IN PRESS APPL CATA B
[18]   THE EFFECTS OF SO2 ON THE OXIDATION OF HYDROCARBONS AND CARBON-MONOXIDE OVER PT-GAMMA-AL2O3 CATALYSTS [J].
YAO, HC ;
STEPIEN, HK ;
GANDHI, HS .
JOURNAL OF CATALYSIS, 1981, 67 (01) :231-236
[19]   ADVANCED DE-SOX CATALYST - MIXED SOLID-SOLUTION SPINELS WITH CERIUM OXIDE [J].
YOO, JS ;
BHATTACHARYYA, AA ;
RADLOWSKI, CA ;
KARCH, JA .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1992, 1 (03) :169-189
[20]   INFLUENCE OF HYDROGEN-SULFIDE ADSORPTION ON THE CATALYTIC PROPERTIES OF METAL-OXIDES [J].
ZIOLEK, M ;
KUJAWA, J ;
SAUR, O ;
LAVALLEY, JC .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1995, 97 (01) :49-55
12