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Facile Preparation of Aluminosilicate RTH across a Wide Composition Range Using a New Organic Structure-Directing Agent

Schmidt, Joel E. and Deimund, Mark A. and Davis, Mark E. (2014) Facile Preparation of Aluminosilicate RTH across a Wide Composition Range Using a New Organic Structure-Directing Agent. Chemistry of Materials, 26 (24). pp. 7099-7105. ISSN 0897-4756. http://resolver.caltech.edu/CaltechAUTHORS:20141215-084344336

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Abstract

RTH type zeolite (aluminosilicate) is a potentially useful catalytic material that is limited by the inability to easily prepare the material over a wide composition range. Here, we report the use of pentamethylimidazolium to prepare aluminosilicate RTH across a wide range of compositions in both fluoride and hydroxide inorganic systems. RTH type zeolites are crystallized with a calcined product Si/Al of 7–27 from fluoride media and 6–59 from hydroxide media. The use of this new, simple organic structure-directing agent that can be prepared in one step allows for dramatic improvement in the compositional space where aluminosilicate RTH can be formed. RTH is tested as a catalyst for the methanol-to-olefins reaction and at complete conversion shows a high propylene/ethylene ratio of 3.9 at a propylene selectivity of 43%.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/cm503625uDOIArticle
http://pubs.acs.org/doi/abs/10.1021/cm503625uPublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/cm503625uPublisherSupporting Information
Additional Information:© 2014 American Chemical Society. Received: October 1, 2014; Revised: November 18, 2014. Publication Date (Web): December 5, 2014. We thank Stacey Zones for insightful discussions regarding the synthesis of RTH. Funding: We thank Chevron Energy and Technology Co. for providing funding for this work. J.E.S. thanks the NDSEG for their support through a fellowship.
Funders:
Funding AgencyGrant Number
Chevron Energy and Technology Co.UNSPECIFIED
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20141215-084344336
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141215-084344336
Official Citation:Facile Preparation of Aluminosilicate RTH across a Wide Composition Range Using a New Organic Structure-Directing Agent Joel E. Schmidt, Mark A. Deimund, and Mark E. Davis Chemistry of Materials 2014 26 (24), 7099-7105
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52798
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Dec 2014 17:04
Last Modified:29 Jan 2015 20:51

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