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A Dynamic Organic Structuring-Directing Agent for Pure-Silica-Zeolite AST and LTA Syntheses

Sun, Minwei and Hunt, Heather K. and Lew, Christopher M. and Cai, Rui and Liu, Yang and Yan, Yushan (2012) A Dynamic Organic Structuring-Directing Agent for Pure-Silica-Zeolite AST and LTA Syntheses. Chinese Journal of Catalysis, 33 (1). pp. 85-91. ISSN 0253-9837. https://resolver.caltech.edu/CaltechAUTHORS:20120321-153915274

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Abstract

Pure-silica-zeolite (PSZ) AST and LTA are synthesized successfully by using the same structure-directing agent (SDA) molecule, but at different concentrations. A dynamic organic SDA is proposed to discuss the mechanism of phase discrimination between AST and LTA. Data suggest that the SDA molecules can self-assemble into dimer or trimer complexes at different concentrations by π-π interactions, and these differences can be taken advantage of to selectively synthesize either PSZ AST or LTA. These deviations from the Liebau's rules indicate that small changes in SDA chemistry, structure, and order in solution can have a great impact on the structure selectivity of the zeolite synthesis.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/S1872-2067(10)60291-4DOIArticle
http://www.sciencedirect.com/science/article/pii/S1872206710602914PublisherArticle
ORCID:
AuthorORCID
Liu, Yang0000-0002-8155-9134
Additional Information:© 2012 Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier BV. Received 23 August 2011. Accepted 2 October 2011. Available online 7 February 2012. This work was supported by the NSF (Grant CTS-0404376).
Funders:
Funding AgencyGrant Number
NSFCTS-0404376
Subject Keywords:zeolite; synthesis; dynamic structure-directing agent; π-π conjugation; Liebau's rules
Issue or Number:1
Record Number:CaltechAUTHORS:20120321-153915274
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120321-153915274
Official Citation:Minwei SUN, Heather K. HUNT, Christopher M. LEW, Rui CAI, Yan LIU, Yushan YAN, A Dynamic Organic Structuring-Directing Agent for Pure-Silica-Zeolite AST and LTA Syntheses, Chinese Journal of Catalysis, Volume 33, Issue 1, January 2012, Pages 85-91, ISSN 1872-2067, 10.1016/S1872-2067(10)60291-4.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29800
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Apr 2012 22:36
Last Modified:09 Mar 2020 13:19

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