Title of article
Effect of hydrogen sulphide on nitric oxide adsorption and decomposition on Cu-containing molecular sieves
Author/Authors
Ziolek، نويسنده , , M. and Sobczak، نويسنده , , I. and Nowak، نويسنده , , I. and Daturi، نويسنده , , M. and Lavalley، نويسنده , , J.C.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
11
From page
197
To page
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 (H2-TPR) techniques, adsorption, and catalytic measurements were applied. H2S adsorption drastically decreases the activity of 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.
Keywords
Cu-ZSM-5 , Cu-NbMCM-41 , H2S adsorption and poisoning , Sulphide and sulphate formation , FTIR , NO adsorption and decomposition , H2-TPR , Cu-AlMCM-41
Journal title
Applied Catalysis B: Environmental
Serial Year
2000
Journal title
Applied Catalysis B: Environmental
Record number
1444686
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