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Published May 2015 | public
Journal Article

Triptycene Structure-Directing Agents in Aluminophosphate Synthesis

Abstract

The synthesis of aluminophosphates is investigated using a number of triptycene-based organic structure-directing agents (OSDA). These OSDAs are designed to synthesize extra-large pore and/or large cavity-containing molecular sieves. Starting from the hydrophobic triptycene molecule, OSDAs are prepared by introducing three amine-based centers that can be charged either by protonation in the acidic aluminophosphate reaction media or through quaternization. VPI-5 is synthesized using these tripytycene OSDAs, and the OSDAs are occluded inside the pores. This synthesis marks the first time VPI-5 has been made as a single phase with an OSDA occluded inside the framework of the as-made material that is not removed by simple washing with water or other solvents. Additionally, several other aluminophosphates with unknown structures are synthesized using these new OSDAs.

Additional Information

© 2015 Elsevier Inc. Received Date: 24 September 2014; Revised Date: 26 January 2015; Accepted Date: 27 January 2015; Available online 7 February 2015. This work was financially supported by the Chevron Energy Technology Company. The authors would like to thank Dr. Son-Jong Hwang for solid state NMR assistance.

Additional details

Created:
August 20, 2023
Modified:
October 20, 2023