Comparison of (non)-sulfided NiNaY zeolite catalysts prepared by ion-exchange and impregnation by xenon adsorption and xenon-129 NMR

Autor: Tamás I. Korányi, V.H.J. de Beer, L.J.M. van de Ven, R.A. van Santen, W. J. J. Welters, J.W. de Haan
Přispěvatelé: Inorganic Materials & Catalysis, Materials and Interface Chemistry, Chemical Engineering and Chemistry
Jazyk: angličtina
Rok vydání: 1993
Předmět:
Zdroj: Catalysis Letters, 17(1-2), 105-116. Springer
ISSN: 1011-372X
Popis: Ni2+ exchanged and NiCl2 impregnated non-sulfided and sulfided NaY zeolites were characterized by xenon adsorption isotherms, Xe-129 NMR and thiophene hydrodesulfurization. The nickel species are located mainly inside the micropores of the zeolites in all samples. Ion-exchange results in a more homogeneous distribution of these species than impregnation. This explains their lower hydrodesulfurization activity compared to the ion-exchanged samples
Databáze: OpenAIRE