Facile Preparation of Aluminosilicate RTH across a Wide Composition Range Using a New Organic Structure-Directing Agent
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%.
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.Attached Files
Supplemental Material - cm503625u_si_001.pdf
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Additional details
- Eprint ID
- 52798
- Resolver ID
- CaltechAUTHORS:20141215-084344336
- Chevron Energy and Technology Co.
- National Defense Science and Engineering Graduate (NDSEG) Fellowship
- Created
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2014-12-15Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field