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Author Ammar, Muhammad ♦ Jiang, Sai ♦ Ji, Shengfu
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ ACYLATION ♦ ANISOLE ♦ AUGER ELECTRON SPECTROSCOPY ♦ CATALYSTS ♦ CHLORIDES ♦ FOURIER TRANSFORMATION ♦ HYDROGEN 6 ♦ INFRARED SPECTRA ♦ MIXTURES ♦ SCANNING ELECTRON MICROSCOPY ♦ TUNGSTOPHOSPHORIC ACID ♦ X-RAY DIFFRACTION ♦ ZEOLITES
Abstract A new strategy has been developed for the encapsulation of the phosphotungstic heteropoly acid (H{sub 3}PW{sub 12}O{sub 40} denoted as PTA) into zeolite imidazolate framework (ZIF-67) cage and the PTA@ZIF-67(ec) catalysts with different PTA content were prepared. The structure of the catalysts was characterized by XRD, BET, SEM, FT-IR, ICP-AES and TG. The catalytic activity and recovery properties of the catalysts for the Friedel-Crafts acylation of anisole with benzoyl chloride were evaluated. The results showed that 14.6–31.7 wt% PTA were encapsulated in the ZIF-67 cage. The PTA@ZIF-67(ec) catalysts had good catalytic activity for Friedel-Crafts acylation. The conversion of anisole can reach ~100% and the selectivity of the production can reach ~94% over 26.5 wt% PTA@ZIF-67(ec) catalyst under the reaction condition of 120 °C and 6 h. After reaction, the catalyst can be easily separated from the reaction mixture by the centrifugation. The recovered catalyst can be reused five times and the selectivity can be kept over 90%. - Graphical abstract: The PTA@ZIF-67 catalysts with different PTA content were prepared by encapsulating the PTA into ZIF-67 cage and the as-synthesized catalysts exhibited good catalytic activity for the Friedel–Craft acylation of anisole with benzoyl chloride.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-01-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 233


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