Influence of platinum on ceria sulfation

Autor:	Jean-Claude Lavalley, V. Visciglio, P. Bazin, Odette Saur, Olivier Touret, Gilbert Blanchard
Rok vydání:	1997
Předmět:	Process Chemistry and Technology Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Sulfur Catalysis Thermogravimetry chemistry.chemical_compound Adsorption Sulfation chemistry Sulfate Platinum General Environmental Science
Zdroj:	Applied Catalysis B: Environmental. 13:265-274
ISSN:	0926-3373
DOI:	10.1016/s0926-3373(97)00004-0
Popis:	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 H2 is promoted by Pt irrespective of the types of sulfate formed on ceria. H2S, which is formed by H2 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9cda5bf057e6fc11794fac3fa06b25ea https://doi.org/10.1016/s0926-3373(97)00004-0 Zobrazit plný text záznamu Full Text from ScienceDirect