Understanding The Brønsted Acidity of Sapo-5, Sapo-17, Sapo-18 and SAPO-34 and Their Catalytic Performance for Methanol Conversion to Hydrocarbons

J. Chen; P. A. Wright; S. Natarajan; J. M. Thomas

doi:10.1016/S0167-2991(08)63726-X

Understanding The Brønsted Acidity of Sapo-5, Sapo-17, Sapo-18 and SAPO-34 and Their Catalytic Performance for Methanol Conversion to Hydrocarbons

J. Chen, P. A. Wright, S. Natarajan, J. M. Thomas

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

Abstract

SAPO-5, SAPO-17, SAPO-18 and SAPO-34 were successfully synthesised. The bridging Si-OH-Al groups (Brønsted acid sites) in these SAPOs were observed by means of diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. On the basis of temperature-programmed-desorption (TPD) of ammonia, it is inferred that the strength of the Brønsted acid sites is in the order SAPO-5<SAPO-17<SAPO-18<SAPO-34. SAPO-18 and SAPO-34, which have cages smaller than those of SAPO-5 and SAPO-17, exhibit high activity and selectivity towards light olefins for the conversion of methanol, whereas SAPO-5 has the longest life time among the SAPOs under investigation.

Original language	English
Pages (from-to)	1731-1738
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	84
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(08)63726-X
Publication status	Published - 1 Jan 1994

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title = "Understanding The Br{\o}nsted Acidity of Sapo-5, Sapo-17, Sapo-18 and SAPO-34 and Their Catalytic Performance for Methanol Conversion to Hydrocarbons",

abstract = "SAPO-5, SAPO-17, SAPO-18 and SAPO-34 were successfully synthesised. The bridging Si-OH-Al groups (Br{\o}nsted acid sites) in these SAPOs were observed by means of diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. On the basis of temperature-programmed-desorption (TPD) of ammonia, it is inferred that the strength of the Br{\o}nsted acid sites is in the order SAPO-5",

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AU - Wright, P. A.

AU - Natarajan, S.

AU - Thomas, J. M.

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Understanding The Brønsted Acidity of Sapo-5, Sapo-17, Sapo-18 and SAPO-34 and Their Catalytic Performance for Methanol Conversion to Hydrocarbons

Abstract

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