Synthesis of RTH-Type Zeolites Using a Diverse Library of Imidazolium Cations

Creators: Schmidt, Joel E.; Deimund, Mark A.; Xie, Dan; Davis, Mark E.

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Abstract

RTH-type zeolites are promising catalytic materials for applications that include the important methanol-to-olefins (MTO) and NO_x reduction reactions. Here, RTH-type zeolites are prepared using a wide-range of imidazolium-based, cationic organic structure directing agents (OSDAs), that greatly expand the methodologies and compositions that can be used to synthesize these materials. The abilities of the OSDAs to produce RTH-type zeolites agree well with results from molecular modeling studies of predicted stabilization energies of the OSDAs in the RTH framework. The RTH-type zeolites are stable to steaming up to 900 °C and are shown to be active MTO catalysts.

Additional Information

© 2015 American Chemical Society. Received: March 17, 2015; Revised: April 27, 2015; Publication Date (Web): May 6, 2015. The authors would like to thank Stacey Zones for insightful discussions regarding the synthesis of RTH. PQ is thanked for providing sodium silicate. Author Contributions: The manuscript was written through contributions of all authors. Funding: The authors would like to thank Chevron Energy and Technology Company for providing funding for this work. J.E.S. would like to thank the NDSEG for their support through a fellowship. Notes: The authors declare no competing financial interest.

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