The stability of H-MCM-22 under severe thermal conditions

HO Pastore; EC Oliveira; A Frache; SR Dutra; Enrico BOCCALERI; Leonardo MARCHESE

doi:10.1016/S0167-2991(04)80660-8

The stability of H-MCM-22 under severe thermal conditions

HO Pastore, EC Oliveira, A Frache, SR Dutra, Enrico BOCCALERI, Leonardo MARCHESE

Risultato della ricerca: Capitolo in libro/report/atti di convegno › Contributo in volume (Capitolo o Saggio) › peer review

Abstract

This study shows that the MWW structure is more stable than previously known zeolites. Structural, thermal and spectroscopic analyses have shown that acid MCM-22 zeolite is stable up to 1373K under vacuum and to 1473K in air. The Brönsted hydroxyl groups withstand temperatures up to 1173K. At 1473K there is a phase transition from the MWW structure into α-cristobalite when the sample is under vacuum while for the sample treated in air only a small fraction of the total is transformed to α-cristobalite at 1473K.

Lingua originale	Inglese
Titolo della pubblicazione ospite	RECENT ADVANCES IN THE SCIENCE AND TECHNOLOGY OF ZEOLITES AND RELATED MATERIALS, PTS A - C
Editore	Elsevier Science BV
Pagine	1426-1430
Numero di pagine	5
Volume	154
DOI	https://doi.org/10.1016/S0167-2991(04)80660-8
Stato di pubblicazione	Pubblicato - 1 gen 2004

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10.1016/S0167-2991(04)80660-8

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title = "The stability of H-MCM-22 under severe thermal conditions",

abstract = "This study shows that the MWW structure is more stable than previously known zeolites. Structural, thermal and spectroscopic analyses have shown that acid MCM-22 zeolite is stable up to 1373K under vacuum and to 1473K in air. The Br{\"o}nsted hydroxyl groups withstand temperatures up to 1173K. At 1473K there is a phase transition from the MWW structure into α-cristobalite when the sample is under vacuum while for the sample treated in air only a small fraction of the total is transformed to α-cristobalite at 1473K.",

author = "HO Pastore and EC Oliveira and A Frache and SR Dutra and Enrico BOCCALERI and Leonardo MARCHESE",

year = "2004",

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doi = "10.1016/S0167-2991(04)80660-8",

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The stability of H-MCM-22 under severe thermal conditions. / Pastore, HO; Oliveira, EC; Frache, A et al.
RECENT ADVANCES IN THE SCIENCE AND TECHNOLOGY OF ZEOLITES AND RELATED MATERIALS, PTS A - C. Vol. 154 Elsevier Science BV, 2004. pag. 1426-1430.

Risultato della ricerca: Capitolo in libro/report/atti di convegno › Contributo in volume (Capitolo o Saggio) › peer review

TY - CHAP

T1 - The stability of H-MCM-22 under severe thermal conditions

AU - Pastore, HO

AU - Oliveira, EC

AU - Frache, A

AU - Dutra, SR

AU - BOCCALERI, Enrico

AU - MARCHESE, Leonardo

PY - 2004/1/1

Y1 - 2004/1/1

N2 - This study shows that the MWW structure is more stable than previously known zeolites. Structural, thermal and spectroscopic analyses have shown that acid MCM-22 zeolite is stable up to 1373K under vacuum and to 1473K in air. The Brönsted hydroxyl groups withstand temperatures up to 1173K. At 1473K there is a phase transition from the MWW structure into α-cristobalite when the sample is under vacuum while for the sample treated in air only a small fraction of the total is transformed to α-cristobalite at 1473K.

AB - This study shows that the MWW structure is more stable than previously known zeolites. Structural, thermal and spectroscopic analyses have shown that acid MCM-22 zeolite is stable up to 1373K under vacuum and to 1473K in air. The Brönsted hydroxyl groups withstand temperatures up to 1173K. At 1473K there is a phase transition from the MWW structure into α-cristobalite when the sample is under vacuum while for the sample treated in air only a small fraction of the total is transformed to α-cristobalite at 1473K.

UR - https://iris.uniupo.it/handle/11579/20621

U2 - 10.1016/S0167-2991(04)80660-8

DO - 10.1016/S0167-2991(04)80660-8

M3 - Chapter

VL - 154

SP - 1426

EP - 1430

BT - RECENT ADVANCES IN THE SCIENCE AND TECHNOLOGY OF ZEOLITES AND RELATED MATERIALS, PTS A - C

PB - Elsevier Science BV

ER -

The stability of H-MCM-22 under severe thermal conditions

Abstract

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