Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 3, Issue 1, Pages 170-176Publisher
AMER CHEMICAL SOC
DOI: 10.1021/sc500674q
Keywords
Mesoporous material; amphiphilic catalyst; poly(ionic liquids); polyhedral oligomericsilsesquioxanes (POSS); polyoxometalates (POMs)
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Funding
- National Natural Science Foundation of China [21206052, 21136005]
- Opening Foundation of the State Key Laboratory of Materials-Oriented Chemical Engineering [KL13-09]
- MOE & SAFEA for the 111 Project [B13025]
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Novel amphiphilic mesostructured polyoxometalate-based ionic hybrids have been successfully synthesized through designing new POSS-derived mesoporous poly(ionic liquids) (POSS-BMx) to interact with Keggin-type phosphotungstic acid (PW). The obtained ionic hybrids POSS-BMx-PW have good thermal stability, adjustable pore structure and surface wettability. Catalytic tests for H2O2-based epoxidation of cydooctene, along with comparisons to various counterparts, well demonstrate that POSS-BMx-PW (x = 8, 11) exhibit high activity and selectivity, coupled with convenient recovery and steady reuse. The unique mesoporous structure and the amphiphilic catalyst surface are revealed to be responsible for the catalyst's excellent performances in epoxidation reaction with H2O2.
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