Hydrogen chemisorption on Pt/Al2O3: dependence of hydrogen desorption behaviour on its surface concentration, on adsorption temperature and on surface water

Autor:	U. Leibnitz, H. Ehwald
Rok vydání:	1996
Předmět:	Adsorption Hydrogen Chemistry Thermal desorption spectroscopy Chemisorption Desorption Inorganic chemistry chemistry.chemical_element General Chemistry Activation energy Temperature-programmed reduction Catalysis
Zdroj:	Catalysis Letters. 38:149-155
ISSN:	1572-879X 1011-372X
Popis:	The hydrogen chemisorption on Pt/Al2O3 was investigated by temperature programmed desorption. The activation energy of desorption strongly depends on the hydrogen surface coverage. The chemisorption process is shown to be activated. High temperature H2 desorption (spilled-over hydrogen) is due to reoxidation of reduced parts of the carrier surface by water or -OH groups.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::29a428fc11a6ef3fa27d2552f6cefbd5 https://doi.org/10.1007/bf00806561 Zobrazit plný text záznamu Full text from SpringerLink