Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies.

Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies. Research Abstract Details 

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Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies. Abstract Text:

Ben Slater,Tetsu Ohsuna,Zheng Liu,Osamu Terasaki,

Detailed investigations into surface mediated crystal growth at zeolite external surfaces are presented. High resolution TEM is able to directly resolve surface and bulk crystallographic features and the unusual surface structural features are interpreted from simulation work. The growth of the double 4 ring is found to be a crucial and rate-determining step in the surface mediated, post-nucleation crystal growth mechanism of zeolite Beta C. Growth of 4 rings is found to be more favourable on fast growing rather than slow growing faces, explaining the relative growth rate of crystal faces in this materials. Similarly, the terminating structures of zeolite Y/Faujasite can be partly explained by considering the condensation of 6 ring and double 6 ring species at the crystal surface. Whilst 4-ring and double 4 rings are known solution species, 6 rings and double 6 rings are not, and hence it is speculated that post-nucleation crystal growth may involve competition between primary building unit and secondary building unit mediated crystal growth mechanisms.

Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies. Publishing Authors By Initials

B Slater,T Ohsuna,Z Liu,O Terasaki,

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Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Faraday discussions

VOLUME: 136

Page Numbers: 125-41; discussion 213-29

Journal Abbreviation: Faraday Discuss.

ISSN: 1359-6640

DAY: 28

MONTH: 11

YEAR: 2007

Insights into the crystal growth mechanisms of zeolites from combined experimental imaging and theoretical studies. Information

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LANGUAGE: eng

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AFFILIATION: Davy Faraday Research Laboratory, The Royal Institution of Great Britain, 21 Alhemarle Street, London, UK W1S 4BS. ben@ri.ac.uk

Country: England

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MEDLINETA: Faraday Discuss

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