Use of Nb2O5 as nickel passivating agent: characterisation of the Ni/Nb2O5/SiO2 system

Autor:	Jordi Llorca, Pilar Ramírez de la Piscina, Luciana Tavares dos Santos, Narcís Homs, Evandro Brum Pereira, Marcelo Maciel Pereira
Rok vydání:	2003
Předmět:	inorganic chemicals Alkane chemistry.chemical_classification Inorganic chemistry chemistry.chemical_element General Chemistry Heterogeneous catalysis Catalysis law.invention Nickel Hydrocarbon chemistry Transition metal Hydrogenolysis law otorhinolaryngologic diseases Calcination
Zdroj:	Catalysis Today. 78:459-465
ISSN:	0920-5861
Popis:	Niobia-modified silica was used as support for nickel-based catalysts. Catalysts with different nickel loading were prepared by successive incipient-wetness impregnation of toluenic nickel octanoate solutions. The samples were characterised after both calcination and reduction by TEM-EDX techniques and tested in the ethane hydrogenolysis. Their catalytic behaviour was compared to that of related silica-supported nickel catalysts. A high suppression of hydrogenolysis activity (93–99%) was determined for the niobia-modified silica-supported nickel catalysts which do not show nickel particles on silica.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4918fc806193ba30e246007cbe8f5107 https://doi.org/10.1016/s0920-5861(02)00331-0 Zobrazit plný text záznamu Full Text from ScienceDirect