On the reducibility of sulfated Pt/CeXZr1−XO2 solids: A coupled thermogravimetric FT-IR study using CO as the reducing agent

Autor: Virginie Harle, Jean Claude Lavalley, A. M Le Govic, Philippe Bazin, Olivier Marie, Gilbert Blanchard, Marco Daturi, Odette Saur

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2012, 119 (DOI: 10.1016/j.apcatb.2012.02.037), pp.207--216

The reducibility of sulfate species by CO was studied over ceria and Ce0.63Zr0.37O2 mixed oxide with or without platinum, using infrared spectroscopy and thermogravimetry. The mechanism for sulfate reduction appeared to be based on three main points.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f77abb860732132a0e912f5e2a01f19
https://doi.org/10.1016/j.apcatb.2012.02.037

Selective Oxidation of H2S over CuO/Al2O3: Identification and Role of the Sulfurated Species formed on the Catalyst during the Reaction

Autor: J. Nougayrède, Odette Saur, Guylène Costentin, E. Laperdrix, S. Savin-Poncet, Christophe Nedez, Jean-Claude Lavalley

Publikováno v: Journal of Catalysis. 189:63-69

A CuO/Al 2 O 3 catalyst was used for selective oxidation of hydrogen sulfide into sulfur at low temperature (383 K). H 2 S is totally consumed during the 28 first hours of the reaction, without detection of SO 2 nor S n . The decrease of H 2 S conver

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7db15d799f041c8daa305a61630fd88e
https://doi.org/10.1006/jcat.1999.2691

Claus Catalysis and H2S Selective Oxidation

Autor: Christophe Nedez, Jean-Claude Lavalley, Anne Pieplu, Odette Saur, Oliver Legendre

Publikováno v: Catalysis Reviews. 40:409-450

This review article deals with the development of sulfur recovery from the Claus process to H2S selective oxidation. Governments are constantly tightening regulations to limit the emission of sulfur compounds into the air. This makes it necessary to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33d056dc68c5469405b851d117d66784
https://doi.org/10.1080/01614949808007113

Effect on the reaction between methanol and hydrogen sulphide of Na or Mo doping on zirconia and alumina

Autor: Maria Ziolek, A Aboulayt, Jean-Claude Lavalley, Izabela Nowak, J. Czyzniewska, Odette Saur, J. Kujawa

Publikováno v: Applied Catalysis A: General. 171:109-115

The effect of sodium doping on alumina and zirconia activity in methanethiol formation from hydrosulphurisation of methanol by H 2 S was studied. It provoked an activity decrease and a selectivity increase in agreement with the catalysts basicity inc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c030aaf6ea30bd6c1191c8c71a87b80
https://doi.org/10.1016/s0926-860x(98)00070-2

Use of CeO2_Al2O3 as a SO2 sorbent

Autor: Jean-Claude Lavalley, G. Blanchard, Mohamed Waqif, Odette Saur, Anne Pieplu

Publikováno v: Solid State Ionics. 95:163-167

Adsorption and oxidation of SO2 on a CeO2Al2O3 solid have been studied by IR spectroscopy and gravimetry. Addition of CeO2 to A12O3 lowers the temperature of formation of sulfate, increases the amount formed and decreases the reduction temperature

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bae7a6c70b835e55cfdeafe769f3e83
https://doi.org/10.1016/s0167-2738(96)00577-2