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Titolo:
Effect of hydrogen sulphide on nitric oxide adsorption and decomposition on Cu-containing molecular sieves
Autore:
Ziolek, M; Sobczak, I; Nowak, I; Daturi, M; Lavalley, JC;
Indirizzi:
Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland Adam Mickiewicz Univ Poznan Poland PL-60780 hem, PL-60780 Poznan, Poland ISMRA Univ, Catalyse & Spectrochim Lab, UMR 6506, F-14050 Caen, France ISMRA Univ Caen France F-14050 ochim Lab, UMR 6506, F-14050 Caen, France
Titolo Testata:
APPLIED CATALYSIS B-ENVIRONMENTAL
fascicolo: 3-4, volume: 28, anno: 2000,
pagine: 197 - 207
SICI:
0926-3373(200012)28:3-4<197:EOHSON>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
NOX STORAGE CATALYSTS; FT-IR; EXCHANGED ZSM-5; ZEOLITES; REDUCTION; REMOVAL; ENGINE; MCM-41; H2S;
Keywords:
Cu-ZSM-5; CU-AlMCM-41; Cu-NbMCM-41; H2S adsorption and poisoning; sulphide and sulphate formation; NO adsorption and decomposition; FTIR; H-2-TPR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Ziolek, M Adam Mickiewicz Univ, Fac Chem, Grunwaldzka 6, PL-60780 Poznan, Poland Adam Mickiewicz Univ Grunwaldzka 6 Poznan Poland PL-60780 oland
Citazione:
M. Ziolek et al., "Effect of hydrogen sulphide on nitric oxide adsorption and decomposition on Cu-containing molecular sieves", APP CATAL B, 28(3-4), 2000, pp. 197-207

Abstract

NO adsorption and decomposition were studied on sulphided and sulphated copper-exchanged ZSM-5, AlMCM-41 and NbMCM-41 molecular sieves. FTIR, temperature-programmed reduction (H-2-TPR) techniques, adsorption, and catalytic measurements were applied. H2S adsorption drastically decreases the activityof copper-containing micro- and mesoporous materials studied in NO decomposition due to their sulphidation. This decrease is higher than that observed after SO2 treatment and is assigned to the formation of sulphide species. H2S is strongly chemisorbed on all copper active sites. Oxidation of sulphide species leading to the formation of sulphates does not increase the activity in the decomposition of NO, suggesting that some sulphided species are not oxidised. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 21/09/20 alle ore 17:59:40