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US 2023/0077288 A1Published application
Synthesis of finned zeolite crystals
AssigneeUniversity of Houston System
InventorsJeffrey D. Rimer, Yufeng Shen, Heng Dai
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Abstract
A secondary growth procedure described herein is used to prepare finned zeolites. The finned zeolites possess properties that are distinctly unique compared to crystals of similar size lacking fins. The procedure is amenable to a wide range of zeolite crystal structures.
Claims17
A method for preparing finned zeolite crystals, comprising:
- preparing a secondary growth solution for epitaxial growth of finned protrusions from zeolite seed crystals, wherein the secondary growth solution comprises one or more framework source precursors, one or more structure-directing agents, and a hydroxide source;
- adding the zeolite seed crystals in an amount of about 5 to about 30 weight percent of the secondary growth solution to produce a seeded growth solution;
- heating the seeded growth solution to a temperature of about 100° C. to about 170° C. for about 6 to about 48 hours;
- quenching the seeded growth solution to room temperature to produce a final growth solution;
- and
- isolating finned zeolite crystals from the final growth solution.
3 more elements
Finned zeolite crystals, comprising:
- a zeolite seed crystal portion, wherein the seed portion comprises a single crystallographic registry, and wherein the seed portion comprises a network of pores;
- and
- a plurality of epitaxially grown fins extending from outer surfaces of the zeolite seed crystal portion, wherein the epitaxially grown fins comprise a single crystallographic registry that is identical to the single crystallographic registry of the zeolite seed crystal portion, and wherein the epitaxially grown fins comprise a network of pores that is continuous with the network of pores of the zeolite seed crystal portion.
Dependencies are inferred from the claim text.