Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane

Y. Takita; K. Kurosaki; T. Ito; Y. Mizuhara; Tatsumi Ishihara

doi:10.1016/S0167-2991(08)61855-8

Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane

Y. Takita, K. Kurosaki, T. Ito, Y. Mizuhara, Tatsumi Ishihara

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6 Citations (Scopus)

Abstract

Catalysis by lanthanide phosphates (LnPs) were studied. Only LaPO₄ and CePO₄ are effective catalysts in various LnPs for oxidative dehydrogenation of iso-butane. Using a iso-butane rich reactant gas mixture, the selectivity of iso-butene showed 79-86% at 450-550°C. LnPs have no adsorbed oxygen species and the surface lattice oxygen reacted with hydrogen at >200°C. The activity of the lattice oxygen not affected the catalytic activity. A linear relationship has observed between the acid amount and the catalytic activity of the catalysts. This suggests that acidic sites of intermediate strength play a key role in the oxidative dehydrogenation of iso-butane.

Original language	English
Pages (from-to)	441-446
Number of pages	6
Journal	Studies in Surface Science and Catalysis
Volume	90
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(08)61855-8
Publication status	Published - Jan 1 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0167-2991(08)61855-8

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title = "Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane",

abstract = "Catalysis by lanthanide phosphates (LnPs) were studied. Only LaPO4 and CePO4 are effective catalysts in various LnPs for oxidative dehydrogenation of iso-butane. Using a iso-butane rich reactant gas mixture, the selectivity of iso-butene showed 79-86% at 450-550°C. LnPs have no adsorbed oxygen species and the surface lattice oxygen reacted with hydrogen at >200°C. The activity of the lattice oxygen not affected the catalytic activity. A linear relationship has observed between the acid amount and the catalytic activity of the catalysts. This suggests that acidic sites of intermediate strength play a key role in the oxidative dehydrogenation of iso-butane.",

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T1 - Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane

AU - Takita, Y.

AU - Kurosaki, K.

AU - Ito, T.

AU - Mizuhara, Y.

AU - Ishihara, Tatsumi

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Catalysis by lanthanide phosphates (LnPs) were studied. Only LaPO4 and CePO4 are effective catalysts in various LnPs for oxidative dehydrogenation of iso-butane. Using a iso-butane rich reactant gas mixture, the selectivity of iso-butene showed 79-86% at 450-550°C. LnPs have no adsorbed oxygen species and the surface lattice oxygen reacted with hydrogen at >200°C. The activity of the lattice oxygen not affected the catalytic activity. A linear relationship has observed between the acid amount and the catalytic activity of the catalysts. This suggests that acidic sites of intermediate strength play a key role in the oxidative dehydrogenation of iso-butane.

AB - Catalysis by lanthanide phosphates (LnPs) were studied. Only LaPO4 and CePO4 are effective catalysts in various LnPs for oxidative dehydrogenation of iso-butane. Using a iso-butane rich reactant gas mixture, the selectivity of iso-butene showed 79-86% at 450-550°C. LnPs have no adsorbed oxygen species and the surface lattice oxygen reacted with hydrogen at >200°C. The activity of the lattice oxygen not affected the catalytic activity. A linear relationship has observed between the acid amount and the catalytic activity of the catalysts. This suggests that acidic sites of intermediate strength play a key role in the oxidative dehydrogenation of iso-butane.

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Role of Acidic Sites on Metal Phosphates in the Catalytic Oxidation of iso-Butane

Abstract

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