We report a method to efficiently produce all-silica hollow zeolites by leaching their parent crystals in sodium aluminate and hydrochloric acid solutions successively. The extra-framework aluminum species resulted from the dissolution of sodium aluminate can protect the crystal rim from damaging, and are subsequently eliminated by acid wash.
T. Li, F. Krumeich and J. A. van Bokhoven, CrystEngComm, 2020, 22, 2845 DOI: 10.1039/D0CE00263A
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