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A New Series of Nanoporous Ionic Crystals Based on Polyoxometalates – Synthesis, Crystal Structures, and Adsorption Properties
Author(s) -
Han Xiaohui,
Xu Lin,
Li Fengyan,
Jiang Ning
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100359
Subject(s) - polyoxometalate , chemistry , thermogravimetric analysis , adsorption , microporous material , powder diffraction , molecular sieve , methanol , sorption , infrared spectroscopy , inorganic chemistry , crystallography , nuclear chemistry , organic chemistry , catalysis
Based on polyoxometalate cluster anions and macrocations, KH 2 [Cr 3 O(OOCCH 3 ) 6 (H 2 O) 3 ][α‐GeMo 12 O 40 ] · 10H 2 O ( 1 ), K 1.5 H 1.5 [Cr 3 O(OOCCH 3 ) 6 (H 2 O) 3 ][α‐GeW 12 O 40 ] · 9.5H 2 O ( 2 ), NaH 2 [Cr 3 O(OOCCH 3 ) 6 (H 2 O) 3 ] 3 [α‐P 2 W 18 O 62 ] · 32H 2 O ( 3 ), and Na 3 [Cr 3 O(OOCCH 3 ) 6 (H 2 O) 3 ] 3 [α‐As 2 W 18 O 62 ] · 34H 2 O ( 4 ) have been prepared by a conventional method and characterized by single‐crystal X‐ray diffraction, IR and UV/Vis spectroscopy, elemental analysis, thermogravimetric analysis (TGA) and powder X‐ray diffraction (PXRD). In addition, the gas adsorption properties of these four compounds for methanol and ethanol have been investigated. The adsorption studies display an apparent difference between methanol and ethanol vapor adsorption and demonstrate that such microporous materials could be applied as new molecular sieves for selective sorption from a mixture of C 1 and C 2 alcohols.