15290-77-4Relevant articles and documents
A novel strategy for synthesis of dichlorooctafluorocyclopentane and reaction mechanism investigation
Zhang, Pingli,Lu, Dayong,Zhou, Biao,Zhou, Xiaomeng
, p. 33 - 39 (2016)
A novel method was used for preparing 1,1-dichlorooctafluorocyclopentane and 1,2-dichlorooctafluorocyclopentane through the reaction of 1,2-dichlorohexafluorocyclopentene, anhydrous hydrogen fluoride, and chlorine. A series of single- and multi-component catalysts were prepared by means of impregnation and coprecipitation, respectively. The catalyst containing Fe(III), Zr(IV), Co(II), Zn(II) and Cu(II) showed the highest catalytic activity among these catalysts. Moreover, the main reaction routes and catalytic mechanism were investigated through experiments and theoretical analysis. Given the environmental and economic benefits, this method has a great application potential in industrial production.
Synthesis of hydrofluorocyclopentanes by vapor-phase catalytic hydrodehalogenation
Qing, Feiyao,Zhang, Chengping,Quan, Hengdao
, p. 61 - 67 (2018/07/25)
Hydrofluorocyclopentanes (c5-HFCs) were prepared by gas-phase hydrodehalogenation of chlorofluorocyclopentenes (c5-CFOs) over various noble metals catalysts. The activity of the catalysts followed the order Pd > Pt > Rh > Ru, and the halogen atom on the C(sp2) atom exhibited stronger reactivity than the halogen on the C(sp3) atom. Possible mechanisms of the gas-phase hydrodehalogenation of c5-CFOs re proposed herein.
Synthesis of 1,1,2,2,3,3,4-heptafluorocyclopentane as a new generation of green solvent
Zhang, Chengping,Qing, Feiyao,Quan, Hengdao,Sekiya, Akira
, p. 11 - 16 (2015/11/24)
1,1,2,2,3,3,4-Heptafluorocyclopentane is a new generation of green solvent. It was synthesized by the liquid-phase fluorination reactions from hexachlorocyclopentadiene to 1-chloroheptafluoro-cyclopentene in the presence of KF in DMF and by the vapor-phase hydrogenation reaction from 1-chloroheptafluorocyclopentene to 1,1,2,2,3,3,4-heptafluorocyclopentane in the presence of Pd-based hydrogenation catalyst. Quantum chemical calculations for the isomers energies using Gaussian09 were conducted to verify the chemical equilibriums between isomers of trichloropentafluorocyclopentene or dichlorohexafluorocyclopentene in the fluorination reactions. Possible mechanisms for 1,1,2,2,3,3,4-heptafluorocyclopentane synthesis were proposed.
HIGH-PURITY 1H-HEPTAFLUOROCYCLOPENTENE
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Paragraph 0039, (2016/01/25)
The present invention is a 1H-Heptafluorocyclopentene having a purity of 99.9 wt% or more and an organochlorine-based compound content of 350 ppm by weight or less. The present invention provides a high-purity 1H-Heptafluorocyclopentene that may be useful as a plasma reaction gas for semiconductors.
METHOD FOR PRODUCING HYDROGEN-CONTAINING FLUOROOLEFIN COMPOUND
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Page/Page column 6-7, (2011/04/18)
An unsaturated hydrogen-containing fluoroolefin compound is obtained by bringing an unsaturated fluorine-containing halogen compound into contact with 0.1 to 3 molar equivalents of hydrogen relative to the unsaturated fluorine-containing halogen compound in a vapor phase in the presence of a supported palladium catalyst in which an amount of supported palladium is 0.1% by weight to 2.5% by weight.
Porous calcium fluoride, its producing method, catalyst for hydrogenation reaction, and method for producing trihydrofluorocarbon
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Page/Page column 5, (2010/02/11)
Porous calcium fluoride having a large surface area, a method for producing the same, a catalyst (for hydrogenation reaction in particular) using the porous calcium fluoride as a carrier with superior activity, selectivity, and durability, and a method for producing trihydrofluorocarbon using the catalyst. The porous calcium fluoride having a BET surface area of 20 m2/g to 200 m2/g is prepared by reacting soda lime with hydrogen fluoride. The carried cataryst (for hydrogenation reaction in particurar) is obtained by causing a metal or metal compound to be carried on carrier formed of the porous calcium fluoride. Trihydrofluorocarbon (2) is produced by causing a fluooroalkene (1) to contact hydrogen in the presence of the catalyst for hydrogenation reaction. wherein X denotes a halogen atom, Rf1 and Rf2 individually denote a fluorine or a parafluoroalkyl group, and Rf1 may be bonded to Rf2 to form a ring.
Fluorinated, saturated hydrocarbons
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, (2008/06/13)
A composition containing less than 95 mol % of a trihydrofluorinated saturated hydrocarbon represented by the following formula (I) Rf1—R1—Rf2??(I) (wherein R1represents a carbon chain in which CHF and CH2are bound, and Rf1and Rf2are bound to each other to form a ring by a perfluoroalkylene chain of 2 to 4 carbon atoms) and the balance of a tetrahydrofluorinated saturated hydrocarbon having the same carbon number and the same carbon structure as the trihydrofluorinated saturated hydrocarbon, as represented by the following formula (II) Rf1—R2—Rf2??(II) (wherein R2represents a carbon chain in which CH2and CH3are bound, and Rf1and Rf2are as defined above) is provided as a composition containing, in a high proportion, trihydrofluorocarbon, a hydrofluorocarbon (HFC) known to have a small global heating coefficient, which has less influence on the global environment, shows less toxicity to animals, and is chemically stable.
Preparation and application of porous calcium fluoride - A novel fluorinating reagent and support of catalyst
Quan, Heng-Dao,Tamura, Masanori,Gao, Ren-Xiao,Sekiya, Akira
, p. 65 - 69 (2007/10/03)
A novel material, porous calcium fluoride (PCF) with more than 60m2/g surface area, was prepared by the reaction of soda lime (SL) with anhydrous hydrogen fluoride (AHF), and its application as a fluorinating reagent and support of catalyst was investigated.