Steam-Assisted Synthesis of an Extra-Stable Polyoxometalate-Encapsulating Metal Azolate Framework: Applications in Reagent Purification and Proton Conduction

Different from the conventional synthesis approaches, such as hydrothermal or solvothermal synthesis, a porous metal azolate framework encapsulating Keggin‐type [SiW12O40]4− anions was prepared by an environmentally friendly, low‐cost, and highly efficient steam‐assisted conversion method for the fi...

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Bibliographic Details
Published in:Chemistry : a European journal 2015-09, Vol.21 (37), p.13058-13064
Main Authors: Zhou, En-Long, Qin, Chao, Wang, Xin-Long, Shao, Kui-Zhan, Su, Zhong-Min
Format: Article
Language:English
Subjects:
Adsorption
Alcohols
Alternating current
Chemistry
Corrosion resistance
Ethanol
Ethyl alcohol
Materials selection
metal-organic frameworks
nanostructures
polyoxometalates
Reagents
Synthesis
synthetic methods
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Summary:Different from the conventional synthesis approaches, such as hydrothermal or solvothermal synthesis, a porous metal azolate framework encapsulating Keggin‐type [SiW12O40]4− anions was prepared by an environmentally friendly, low‐cost, and highly efficient steam‐assisted conversion method for the first time. The nanosized polyoxometalates as a template were encapsulated by a zeotype 6448 cage constructed by 28 nuclear zinc atoms connected through 32 Trz ligands. The obtained composite exhibits excellent thermal and chemical stability; meanwhile, its special ability to selectively absorb water from alcohols makes it efficiently separate water from analytically pure ethanol, with the result that water content decreases from 0.23 to 0.05 wt %, which is superior to the standard of chromatographic grade ethanol (
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201501337