A functionalized polyoxometalate solid for selective oxidation of styrene to benzaldehyde

Jing Tang, Xiu Li Yang, Xian Wei Zhang, Miao Wang, Chuan De Wu

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The reaction of [Na12(H2O)38][WZn{M(H 2O)}2(ZnW9O34)2] ·3H2O (M = Mn, Co) and Co(NO3)2· 6H2O in water at 80 °C afforded red crystals of [Co(H 2O)6]2{[Co(H2O)4] 2[Co(H2O)5]2WZn[Co(H 2O)]2(ZnW9O34)2} ·10H2O (1), which has been characterized by TGA, IR, PXRD, element analysis and single crystal X-ray diffraction. The polyanion [WZn{Co(H2O)}2(ZnW9O34) 2]12- in 1 is double-linked by cobalt(ii) cations to extend into a 1D anionic polymeric chain of {[Co(H2O) 4]2[Co(H2O)5] 2WZn[Co(H2O)]2(ZnW9O 34)2}4- with partial free cobalt cations. The redox active cobalt(ii) sites made compound 1 an excellent catalyst for the oxidation of styrene with high styrene conversion (up to 96%) and high benzaldehyde selectivity (up to 99%).

Original languageEnglish (US)
Pages (from-to)3396-3399
Number of pages4
JournalDalton Transactions
Volume39
Issue number14
DOIs
StatePublished - Apr 29 2010

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