Catalytic performance and QXAFS analysis of Ni catalysts modified with Pd for oxidative steam reforming of methane

Autor:	Kaori Yoshida, Yuya Mukainakano, Keiichi Tomishige, Kazu Okumura, Kimio Kunimori
Jazyk:	angličtina
Rok vydání:	2008
Předmět:	Inorganic chemistry General Chemistry Bond formation Heterogeneous catalysis Catalysis Methane Steam reforming chemistry.chemical_compound chemistry ComputingMethodologies_DOCUMENTANDTEXTPROCESSING Temperature-programmed reduction Absorption (chemistry) Bimetallic strip
Zdroj:	Catalysis today. 132(1-4):101-108
ISSN:	0920-5861
Popis:	application/pdf Pd–Ni bimetallic catalysts prepared by co-impregnation and sequential impregnation methods were compared in the catalytic performance in oxidative steam reforming of methane. The sequential impregnation was more effective to the suppression of hot spot formation. According to the structural analysis by in situ quick-scanning X-ray absorption fine structure (QXAFS) during the temperature programmed reduction, the sequential impregnation method gave the bimetallic particles with higher Pd surface composition because of the low possibility of the Pd–Ni bond formation. Higher surface composition of Pd with higher reducibility than Ni is connected to the enhancement of the catalyst reducibility and the suppression of the hot spot formation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80b7b6097f441dbb3400848ace4a2f1f https://tsukuba.repo.nii.ac.jp/records/15618 Zobrazit plný text záznamu Full Text from ScienceDirect