Abstract
Highly ordered mesoporous silicoaluminophosphates were synthesized using LTA zeolite dissolved acidic solutions. In the first step, zeolite nanoblocks are prepared from zeolite crystals by dissolution of LTA in an H3PO4/HCl solution of carefully controlled concentration. In the second step, we combine the above solution and PEO106PPO70PEO106 triblock copolymer aqueous solution to carry out the self-assembly process. Dealumination from the zeolite framework occurs in the first step, but the zeolite nanoblocks still retain the local structure of the Si–O–Al bonding. In addition, the incorporation of phosphorus species in the framework inhibits the release of aluminum species.
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