Formation of H3O+ at the Brönsted site in SAPO-34 catalysts

Leonardo Marchese; Jiesheng Chen; Paul A. Wright; John Meurig Thomas

doi:10.1021/j100133a001

Formation of H₃O⁺ at the Brönsted site in SAPO-34 catalysts

Leonardo Marchese, Jiesheng Chen, Paul A. Wright, John Meurig Thomas

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

Abstract

Diffuse reflectance infrared spectroscopy, combined with thermogravimetry, of progressively dehydrated (up to 550°C) silicoaluminophosphate (SAPO-34) reveals that, at room temperature, there is a stoichiometric proton transfer from the bridging hydroxyl Brönsted acid site to the physisorbed water. All six predicted infrared vibrations for the H₃O⁺ oxonium ion in C_s or C₁ symmetry are identified. In a typical sample there are 10.0 × 10²⁰ H₃O⁺ ions g^-1.

Original language	English
Pages (from-to)	8109-8112
Number of pages	4
Journal	Journal of Physical Chemistry
Volume	97
Issue number	31
DOIs	https://doi.org/10.1021/j100133a001
Publication status	Published - 1993
Externally published	Yes

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title = "Formation of H3O+ at the Br{\"o}nsted site in SAPO-34 catalysts",

abstract = "Diffuse reflectance infrared spectroscopy, combined with thermogravimetry, of progressively dehydrated (up to 550°C) silicoaluminophosphate (SAPO-34) reveals that, at room temperature, there is a stoichiometric proton transfer from the bridging hydroxyl Br{\"o}nsted acid site to the physisorbed water. All six predicted infrared vibrations for the H3O+ oxonium ion in Cs or C1 symmetry are identified. In a typical sample there are 10.0 × 1020 H3O+ ions g-1.",

author = "Leonardo Marchese and Jiesheng Chen and Wright, {Paul A.} and Thomas, {John Meurig}",

year = "1993",

doi = "10.1021/j100133a001",

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volume = "97",

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journal = "Journal of Physical Chemistry",

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AU - Marchese, Leonardo

AU - Chen, Jiesheng

AU - Wright, Paul A.

AU - Thomas, John Meurig

PY - 1993

Y1 - 1993

N2 - Diffuse reflectance infrared spectroscopy, combined with thermogravimetry, of progressively dehydrated (up to 550°C) silicoaluminophosphate (SAPO-34) reveals that, at room temperature, there is a stoichiometric proton transfer from the bridging hydroxyl Brönsted acid site to the physisorbed water. All six predicted infrared vibrations for the H3O+ oxonium ion in Cs or C1 symmetry are identified. In a typical sample there are 10.0 × 1020 H3O+ ions g-1.

AB - Diffuse reflectance infrared spectroscopy, combined with thermogravimetry, of progressively dehydrated (up to 550°C) silicoaluminophosphate (SAPO-34) reveals that, at room temperature, there is a stoichiometric proton transfer from the bridging hydroxyl Brönsted acid site to the physisorbed water. All six predicted infrared vibrations for the H3O+ oxonium ion in Cs or C1 symmetry are identified. In a typical sample there are 10.0 × 1020 H3O+ ions g-1.

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U2 - 10.1021/j100133a001

DO - 10.1021/j100133a001

M3 - Article

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JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 31

ER -

Formation of H₃O⁺ at the Brönsted site in SAPO-34 catalysts

Abstract

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