Promoting effect of hydrogen spillover on pyridine migration adsorbed on Lewis acid sites in USY zeolite

Ryo Ueda; Keiichi Tomishige; Kaoru Fujimoto

doi:10.1023/A:1019055801384

Promoting effect of hydrogen spillover on pyridine migration adsorbed on Lewis acid sites in USY zeolite

Ryo Ueda, Keiichi Tomishige, Kaoru Fujimoto

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The effect of hydrogen spillover over Pd/SiO₂ + USY on pyridine chemisorbed on acid sites of USY zeolite was investigated. According to FTIR measurement, pyridine adsorbed on Lewis acid sites migrated to Brønsted acid sites under hydrogen-flowing atmosphere. The rate of migration was drastically promoted by physically mixed Pd/SiO₂ catalysts. This suggests that spilt-over hydrogen enhance the migration of pyridine adsorbed on Lewis acid sites.

Original language	English
Pages (from-to)	145-149
Number of pages	5
Journal	Catalysis Letters
Volume	57
Issue number	3
DOIs	https://doi.org/10.1023/A:1019055801384
Publication status	Published - 1999 Feb
Externally published	Yes

Keywords

Brønsted and Lewis acid sites
Hybrid catalyst
Hydrogen spillover
Pyridine migration
Zeolite

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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title = "Promoting effect of hydrogen spillover on pyridine migration adsorbed on Lewis acid sites in USY zeolite",

abstract = "The effect of hydrogen spillover over Pd/SiO2 + USY on pyridine chemisorbed on acid sites of USY zeolite was investigated. According to FTIR measurement, pyridine adsorbed on Lewis acid sites migrated to Br{\o}nsted acid sites under hydrogen-flowing atmosphere. The rate of migration was drastically promoted by physically mixed Pd/SiO2 catalysts. This suggests that spilt-over hydrogen enhance the migration of pyridine adsorbed on Lewis acid sites.",

keywords = "Br{\o}nsted and Lewis acid sites, Hybrid catalyst, Hydrogen spillover, Pyridine migration, Zeolite",

author = "Ryo Ueda and Keiichi Tomishige and Kaoru Fujimoto",

year = "1999",

month = feb,

doi = "10.1023/A:1019055801384",

language = "English",

volume = "57",

pages = "145--149",

journal = "Catalysis Letters",

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T1 - Promoting effect of hydrogen spillover on pyridine migration adsorbed on Lewis acid sites in USY zeolite

AU - Ueda, Ryo

AU - Tomishige, Keiichi

AU - Fujimoto, Kaoru

PY - 1999/2

Y1 - 1999/2

N2 - The effect of hydrogen spillover over Pd/SiO2 + USY on pyridine chemisorbed on acid sites of USY zeolite was investigated. According to FTIR measurement, pyridine adsorbed on Lewis acid sites migrated to Brønsted acid sites under hydrogen-flowing atmosphere. The rate of migration was drastically promoted by physically mixed Pd/SiO2 catalysts. This suggests that spilt-over hydrogen enhance the migration of pyridine adsorbed on Lewis acid sites.

AB - The effect of hydrogen spillover over Pd/SiO2 + USY on pyridine chemisorbed on acid sites of USY zeolite was investigated. According to FTIR measurement, pyridine adsorbed on Lewis acid sites migrated to Brønsted acid sites under hydrogen-flowing atmosphere. The rate of migration was drastically promoted by physically mixed Pd/SiO2 catalysts. This suggests that spilt-over hydrogen enhance the migration of pyridine adsorbed on Lewis acid sites.

KW - Brønsted and Lewis acid sites

KW - Hybrid catalyst

KW - Hydrogen spillover

KW - Pyridine migration

KW - Zeolite

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JO - Catalysis Letters

JF - Catalysis Letters

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