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• W2632602854 startingPage "7623" @default.
• W2632602854 abstract "In this paper, a novel strategy for the preparation of 1,2-dichlorotetrafluorocyclobutene (DTB) was proposed via a catalytic gas-phase process of fluorination using hexachlorobutadiene (HCBD) and anhydrous HF. In order to search for suitable catalysts and reveal the reaction pathway for this synthetic route, a series of studies were carried out. First, CrOx/ZnO catalysts with different promoters (Ni, Cu, In, Al) were prepared by a precipitate method and the optimum reaction conditions were investigated. The highest activity was achieved on the Cr–Ni–Zn catalyst, whose yield of DTB reached 90% by a multiple cycle reaction. Second, the effects of different promoters on the properties of catalysts were studied by Brunauer–Emmett–Teller (BET) surface area analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), temperature-programmed desorption in ammonia (NH3-TPD), and X-ray photoelectron spectroscopy (XPS). It was found that the Cr–Ni–Zn catalyst showed the excellent catalytic performances with more CrOxFy species, higher oxygen concentration, and widely distributed acid strength on its surface. Third, combining experimental results with theoretical calculations, a reaction pathway has been proposed. This study offers an economic synthetic route for DTB from HCBD, which is a valuable and promising method for industrial production." @default.
• W2632602854 created "2017-06-30" @default.
• W2632602854 creator A5003496945 @default.
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• W2632602854 date "2017-07-03" @default.
• W2632602854 modified "2023-10-18" @default.
• W2632602854 title "A Strategy for the Synthesis of 1,2-Dichlorotetrafluorocyclobutene from Hexachlorobutadiene and Its Reaction Pathway" @default.
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• W2632602854 doi "https://doi.org/10.1021/acs.iecr.7b01166" @default.
• W2632602854 hasPublicationYear "2017" @default.
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