A family of molecular sieves containing framework-bound organic structure-directing agents.

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ID: 642
2015
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Ranked #24 of 192 articles by views in angewandte chemie (international ed in english)

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Abstract
Organic structure-directing agents (OSDAs), such as quaternary ammonium cations and amines, used in the synthesis of zeolites and related crystalline microporous oxides usually end up entrapped inside the void spaces of the crystallized inorganic host lattice. But none of them is known to form direct chemical bonds to the framework of these industrially important catalysts and adsorbents. We demonstrate that ECR-40, currently regarded as a typical silicoaluminophosphate molecular sieve, constitutes instead a new family of inorganic-organic hybrid networks in which the OSDAs are covalently bonded to the inorganic framework. ECR-40 crystallization begins with the formation of an Al-OSDA complex in the liquid phase in which the Al is octahedrally coordinated. This unit is incorporated in the crystallizing ECR-40. Subsequent removal of framework-bound OSDAs generates Al-O-Al linkages in a fully tetrahedrally coordinated framework.
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lee2015a Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Lee, Jun Kyu;Shin, Jiho;Ahn, Nak Ho;Turrina, Alessandro;Park, Min Bum;Byun, Youngchul;Cho, Sung June;Wright, Paul A;Hong, Suk Bong;
Journal angewandte chemie (international ed in english)
Year 2015
DOI
10.1002/anie.201504416
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