Fischer-tropsch synthesis over ruthenium/Y-zeolite catalysts: Effects of the neutralizing cations of zeolites

Yu Wen Chen; Wen Chang Hsu; Chiang Shiang Lin

doi:10.1007/BF02073808

Fischer-tropsch synthesis over ruthenium/Y-zeolite catalysts: Effects of the neutralizing cations of zeolites

Yu Wen Chen, Wen Chang Hsu, Chiang Shiang Lin

Department of Chemical and Materials Engineering

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

2 Scopus citations

Abstract

A series of Ru/Y-zeolite catalysts with various alkali and alkaline earth neutralizing cations in zeolites was prepared. These neutralizing cations did not show significant influence on hydrogen chemisorption. However, the turnover frequencies (TOF) of Ru in the CO/H₂ reaction is enhanced when the neutralizing Na cations are replaced by alkaline earth cations. This effect can be attributed to an increase in electron deficiency of the metal crystallites due to the higher acid strength of alkaline earth-Y zeolites. Significant amounts of isobutane were found in the product stream. This is due to the bifunctional mechanisms of the catalysts.

Original language	English
Pages (from-to)	301-306
Number of pages	6
Journal	Reaction Kinetics & Catalysis Letters
Volume	40
Issue number	2
DOIs	https://doi.org/10.1007/BF02073808
State	Published - Sep 1989

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title = "Fischer-tropsch synthesis over ruthenium/Y-zeolite catalysts: Effects of the neutralizing cations of zeolites",

abstract = "A series of Ru/Y-zeolite catalysts with various alkali and alkaline earth neutralizing cations in zeolites was prepared. These neutralizing cations did not show significant influence on hydrogen chemisorption. However, the turnover frequencies (TOF) of Ru in the CO/H2 reaction is enhanced when the neutralizing Na cations are replaced by alkaline earth cations. This effect can be attributed to an increase in electron deficiency of the metal crystallites due to the higher acid strength of alkaline earth-Y zeolites. Significant amounts of isobutane were found in the product stream. This is due to the bifunctional mechanisms of the catalysts.",

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N2 - A series of Ru/Y-zeolite catalysts with various alkali and alkaline earth neutralizing cations in zeolites was prepared. These neutralizing cations did not show significant influence on hydrogen chemisorption. However, the turnover frequencies (TOF) of Ru in the CO/H2 reaction is enhanced when the neutralizing Na cations are replaced by alkaline earth cations. This effect can be attributed to an increase in electron deficiency of the metal crystallites due to the higher acid strength of alkaline earth-Y zeolites. Significant amounts of isobutane were found in the product stream. This is due to the bifunctional mechanisms of the catalysts.

AB - A series of Ru/Y-zeolite catalysts with various alkali and alkaline earth neutralizing cations in zeolites was prepared. These neutralizing cations did not show significant influence on hydrogen chemisorption. However, the turnover frequencies (TOF) of Ru in the CO/H2 reaction is enhanced when the neutralizing Na cations are replaced by alkaline earth cations. This effect can be attributed to an increase in electron deficiency of the metal crystallites due to the higher acid strength of alkaline earth-Y zeolites. Significant amounts of isobutane were found in the product stream. This is due to the bifunctional mechanisms of the catalysts.

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Fischer-tropsch synthesis over ruthenium/Y-zeolite catalysts: Effects of the neutralizing cations of zeolites

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