Strain of MFI crystals in membranes: An in situ synchrotron X-ray study

Hae Kwon Jeong; Zhiping Lai; Michael Tsapatsis; Jonathan C. Hanson

doi:10.1016/j.micromeso.2005.05.043

Strain of MFI crystals in membranes: An in situ synchrotron X-ray study

Hae Kwon Jeong, Zhiping Lai, Michael Tsapatsis^*, Jonathan C. Hanson

^*Corresponding author for this work

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

39 Scopus citations

Abstract

Temperature-resolved in situ synchrotron X-ray diffraction is used for the first time to study the microstructure evolution of a preferentially oriented zeolite membrane (siliceous ZSM-5) during calcination of the organic structure directing agent (tetrapropyl ammonium, TPA). Use of transmission sample geometry allowed us to discriminate in-plane from out-of-plane reflections and to calculate strain imposed on the zeolite layer along the in-plane (parallel to the support) as well as the out-of-plane (perpendicular to the support) direction over the entire calcination process. The results strongly suggest that the zeolite crystals of the membrane are under compressive in-plane stress and that their thermal behavior is quite different from free standing powder.

Original language	English (US)
Pages (from-to)	332-337
Number of pages	6
Journal	Microporous and Mesoporous Materials
Volume	84
Issue number	1-3
DOIs	https://doi.org/10.1016/j.micromeso.2005.05.043
State	Published - Sep 15 2005
Externally published	Yes

Keywords

Crack formation
MFI zeolite membrane
Negative thermal expansion
Thermal behavior
Thin film stress

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials

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10.1016/j.micromeso.2005.05.043

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title = "Strain of MFI crystals in membranes: An in situ synchrotron X-ray study",

abstract = "Temperature-resolved in situ synchrotron X-ray diffraction is used for the first time to study the microstructure evolution of a preferentially oriented zeolite membrane (siliceous ZSM-5) during calcination of the organic structure directing agent (tetrapropyl ammonium, TPA). Use of transmission sample geometry allowed us to discriminate in-plane from out-of-plane reflections and to calculate strain imposed on the zeolite layer along the in-plane (parallel to the support) as well as the out-of-plane (perpendicular to the support) direction over the entire calcination process. The results strongly suggest that the zeolite crystals of the membrane are under compressive in-plane stress and that their thermal behavior is quite different from free standing powder.",

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author = "Jeong, {Hae Kwon} and Zhiping Lai and Michael Tsapatsis and Hanson, {Jonathan C.}",

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TY - JOUR

T1 - Strain of MFI crystals in membranes

T2 - An in situ synchrotron X-ray study

AU - Jeong, Hae Kwon

AU - Lai, Zhiping

AU - Tsapatsis, Michael

AU - Hanson, Jonathan C.

PY - 2005/9/15

Y1 - 2005/9/15

N2 - Temperature-resolved in situ synchrotron X-ray diffraction is used for the first time to study the microstructure evolution of a preferentially oriented zeolite membrane (siliceous ZSM-5) during calcination of the organic structure directing agent (tetrapropyl ammonium, TPA). Use of transmission sample geometry allowed us to discriminate in-plane from out-of-plane reflections and to calculate strain imposed on the zeolite layer along the in-plane (parallel to the support) as well as the out-of-plane (perpendicular to the support) direction over the entire calcination process. The results strongly suggest that the zeolite crystals of the membrane are under compressive in-plane stress and that their thermal behavior is quite different from free standing powder.

AB - Temperature-resolved in situ synchrotron X-ray diffraction is used for the first time to study the microstructure evolution of a preferentially oriented zeolite membrane (siliceous ZSM-5) during calcination of the organic structure directing agent (tetrapropyl ammonium, TPA). Use of transmission sample geometry allowed us to discriminate in-plane from out-of-plane reflections and to calculate strain imposed on the zeolite layer along the in-plane (parallel to the support) as well as the out-of-plane (perpendicular to the support) direction over the entire calcination process. The results strongly suggest that the zeolite crystals of the membrane are under compressive in-plane stress and that their thermal behavior is quite different from free standing powder.

KW - Crack formation

KW - MFI zeolite membrane

KW - Negative thermal expansion

KW - Thermal behavior

KW - Thin film stress

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DO - 10.1016/j.micromeso.2005.05.043

M3 - Article

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SN - 1387-1811

VL - 84

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EP - 337

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

IS - 1-3

ER -

Strain of MFI crystals in membranes: An in situ synchrotron X-ray study

Abstract

Keywords

ASJC Scopus subject areas

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