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Issue 6, 2012
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Synthesis and characterization of ordered mesoporous zeolite LTA with high ion exchange ability

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Abstract

An ordered mesoporous zeolite LTA is prepared by using organofunctionalized silica as Si-source. The mesoporous zeolite LTA has nano-cages of 3 nm interconnected to each other through 0.8–1.2 nm channels. A Jacobsen salen complex can be encapsulated successfully in the supercages of the zeolite. 29Si, 27Al-MAS NMR and in situFT-IR spectra reveal a new crystallization mechanism. The mesostructure and nano-supercages in the zeolite result from the bond-blocking action during the crystal growth. The zeolite has connatural micropore and ordered mesopore systems within the zeolite particles. The mesoporosity of the mesoporous zeolite can be rationally controlled by the degree of silanizing. The diffusion rate of hydrated Mg2+ in the synthesized submesoporous zeolite is 170 times higher than in a traditional zeolite at 308 K.

Graphical abstract: Synthesis and characterization of ordered mesoporous zeolite LTA with high ion exchange ability

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Publication details

The article was received on 22 Sep 2011, accepted on 09 Nov 2011 and first published on 22 Dec 2011


Article type: Paper
DOI: 10.1039/C1JM14740D
J. Mater. Chem., 2012,22, 2532-2538

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    Synthesis and characterization of ordered mesoporous zeolite LTA with high ion exchange ability

    Z. Xue, J. Ma, W. Hao, X. Bai, Y. Kang, J. Liu and R. Li, J. Mater. Chem., 2012, 22, 2532
    DOI: 10.1039/C1JM14740D

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