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Polyoxometalate‐Based Metal‐Organic Frameworks as Heterogeneous Catalysts for Selective Oxidation of Ethylbenzene
Author(s) -
Yu Fan,
Zheng PeiQing,
Long YuXiang,
Ren YanPing,
Kong XiangJian,
Long LaSheng,
Yuan YouZhu,
Huang RongBin,
Zheng LanSun
Publication year - 2010
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.201000491
Subject(s) - polyoxometalate , ethylbenzene , chemistry , catalysis , metal organic framework , selectivity , valence (chemistry) , metal , inorganic chemistry , heterogeneous catalysis , substrate (aquarium) , organic chemistry , adsorption , oceanography , geology
The catalytic properties of four polyoxometalate (POM)‐based metal‐organic frameworks, {[Cu 2 (4,4′‐bipy) 4 (H 2 O) 4 ](SiW 12 O 40 )(H 2 O) 18 } n ( 1 ), {[Cu 2 (4,4′‐bipy) 4 (H 2 O) 4 ](SiW 12 O 40 )(4,4′‐bipy) 2 (H 2 O) 4 } n ( 2 ), {[Cu 2 (4,4′‐bipy) 4 (H 2 O) 4 ](PW 12 O 40 )(H 2 O) 18 } n ( 3 ), and {[Cu 2 (4,4′‐bipy) 4 (H 2 O) 4 ](PMo 12 O 40 )(H 2 O) 18 } n ( 4 ) (bipy = bipyridine), for the oxidation of ethylbenzene were investigated. Complexes 1 – 4 , which feature 3D frameworks formed through static incorporation between distinct Keggin POMs and the same voids in the 2D network of [Cu 2 (4,4′‐bipy) 4 (H 2 O) 4 ] n 4 n + , show the distinct conversion and selectivity for the oxidation of ethylbenzene. Investigation into the difference in the catalytic activity of 1 – 4 reveals that the oxidation of the substrate was performed in the pore of the framework and that the valence of the metal ion in the polyoxometalates significantly affects the catalytic activity of the 3D framework.