A quantitative description of the active sites in the dehydrated acid catalyst HSAPO-34 for the conversion of methanol to olefins

L. Smith; A. K. Cheetham; L. Marchese; J. M. Thomas; P. A. Wright; J. Chen; E. Gianotti

doi:10.1007/BF00811705

A quantitative description of the active sites in the dehydrated acid catalyst HSAPO-34 for the conversion of methanol to olefins

L. Smith, A. K. Cheetham, L. Marchese, J. M. Thomas, P. A. Wright, J. Chen, E. Gianotti

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A neutron diffraction study of the deuterated form of a microcrystalline specimen of the H⁺SAPO-34 catalyst for converting methanol to light olefins reveals two distinct bridging hydroxyl Brønsted sites. These sites are also identified by IR spectroscopy which distinguishes their acid strength from the shift in O-H frequencies following adsorption of CO at 77 K. Protons attached to the O(4) bridging oxygen (OH distance 0.95 Å) exhibit greater acidity than those attached to O(2) (OH distance 0.91 Å).

Lingua originale	Inglese
pagine (da-a)	13-16
Numero di pagine	4
Rivista	Catalysis Letters
Volume	41
Numero di pubblicazione	1-2
DOI	https://doi.org/10.1007/BF00811705
Stato di pubblicazione	Pubblicato - set 1996
Pubblicato esternamente	Sì

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title = "A quantitative description of the active sites in the dehydrated acid catalyst HSAPO-34 for the conversion of methanol to olefins",

abstract = "A neutron diffraction study of the deuterated form of a microcrystalline specimen of the H+SAPO-34 catalyst for converting methanol to light olefins reveals two distinct bridging hydroxyl Br{\o}nsted sites. These sites are also identified by IR spectroscopy which distinguishes their acid strength from the shift in O-H frequencies following adsorption of CO at 77 K. Protons attached to the O(4) bridging oxygen (OH distance 0.95 {\AA}) exhibit greater acidity than those attached to O(2) (OH distance 0.91 {\AA}).",

keywords = "Acid site, Active site, Microporous catalyst, Solid acid",

author = "L. Smith and Cheetham, \{A. K.\} and L. Marchese and Thomas, \{J. M.\} and Wright, \{P. A.\} and J. Chen and E. Gianotti",

year = "1996",

month = sep,

doi = "10.1007/BF00811705",

language = "English",

volume = "41",

pages = "13--16",

journal = "Catalysis Letters",

issn = "1011-372X",

publisher = "Kluwer Academic Publishers",

number = "1-2",

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T1 - A quantitative description of the active sites in the dehydrated acid catalyst HSAPO-34 for the conversion of methanol to olefins

AU - Smith, L.

AU - Cheetham, A. K.

AU - Marchese, L.

AU - Thomas, J. M.

AU - Wright, P. A.

AU - Chen, J.

AU - Gianotti, E.

PY - 1996/9

Y1 - 1996/9

N2 - A neutron diffraction study of the deuterated form of a microcrystalline specimen of the H+SAPO-34 catalyst for converting methanol to light olefins reveals two distinct bridging hydroxyl Brønsted sites. These sites are also identified by IR spectroscopy which distinguishes their acid strength from the shift in O-H frequencies following adsorption of CO at 77 K. Protons attached to the O(4) bridging oxygen (OH distance 0.95 Å) exhibit greater acidity than those attached to O(2) (OH distance 0.91 Å).

AB - A neutron diffraction study of the deuterated form of a microcrystalline specimen of the H+SAPO-34 catalyst for converting methanol to light olefins reveals two distinct bridging hydroxyl Brønsted sites. These sites are also identified by IR spectroscopy which distinguishes their acid strength from the shift in O-H frequencies following adsorption of CO at 77 K. Protons attached to the O(4) bridging oxygen (OH distance 0.95 Å) exhibit greater acidity than those attached to O(2) (OH distance 0.91 Å).

KW - Acid site

KW - Active site

KW - Microporous catalyst

KW - Solid acid

UR - https://www.scopus.com/pages/publications/0001926097

U2 - 10.1007/BF00811705

DO - 10.1007/BF00811705

M3 - Article

SN - 1011-372X

VL - 41

SP - 13

EP - 16

JO - Catalysis Letters

JF - Catalysis Letters

IS - 1-2

ER -

A quantitative description of the active sites in the dehydrated acid catalyst HSAPO-34 for the conversion of methanol to olefins

Abstract

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