55 results about "Antimony pentachloride" patented technology

The preparation of chlorinated hydrocarbons, such as pentachloropropanes, such as 1,1,1,2,3-pentachloropropane, from tetrachloropropanes, such as 1,1,1,3-tetrachloropropane, in the presence of a polyvalent antimony compound that includes a pentavalent antimony compound, such as antimony pentachloride, is described. Also described are methods for preparing optionally chlorinated alkenes, such as, tetrachloropropenes, from chlorinated alkanes, such as pentachloropropanes, in the presence of polyvalent antimony compound that includes a pentavalent antimony compound, as well as methods for recovering polyvalent antimony compounds from such processes.

The invention provides a preparation method of 1,1,1,3,3-pentafluorobutane, which comprises the following step of reacting 1,1,1,3,3,-pentachlorobutane with HF (Hydrogen Fluoride) in a liquid-phase fluorination reactor provided with a low-temperature reaction zone (1) and a high-temperature reaction zone (2) in the presence of a liquid-phase fluorination catalyst. The reaction conditions are as follows: the mol ratio of the HF to the 1,1,1,3,3,-pentachlorobutane is 6-15:1, the reaction pressure is 1.0-1.5 MPa, the reaction temperature of the low-temperature reaction zone is 60-90 DEG C, the reaction temperature of the high-temperature reaction zone is 90-140 DEG C, wherein the liquid-phase fluorination catalyst is antimony pentachloride or tin tetrachloride; the 1,1,1,3,3,-pentachlorobutane enters the low-temperature reaction zone (1) of the liquid-phase fluorination reactor; the fresh HF enters the high-temperature reaction zone (2) of the liquid-phase fluorination reactor and then enters a reaction system; and the circulating HF enters the low temperature reaction zone (1) and the high-temperature reaction zone (2) of the liquid-phase fluorination reactor simultaneously. The invention is used for the preparation of the 1,1,1,3,3-pentafluorobutane.

Production of 1,1,1,2-tetrafluoroethane and pentafluoethane simultaneously is carried out by taking chlorylene as raw material, reacting with Cl2 with anhydrous ferric chloride as catalyst to generate pentaline partly, reacting with HF with mixture of antimony chloride and anhydrous ferric chloride as catalyst to generate mixture of 1,1,1-trifluoride-2-chloroethane and 1,1,1,2-tetrafluoride-2-hydrochloric ether, reacting with HF at 200~400DEG C and 0~0.5Mpa with mixture of CrF3, AlF3, ZnF2 and MgF2 as catalyst to generate mixture of 1,1,1,2-tetrafluoroethane and pentafluoethane, separating, washing, alkali washing, dewatering, rectifying and drying to obtain 1,1,1,2-tetrafluoroethane and pentafluoethane.

The invention relates to a norbornene-perfluoromethyl vinyl ether binary copolymer catalyst and a binary copolymerization method. The preparation method of the catalyst is characterized by comprising the following steps: in a container of dry inert gas atmosphere, dissolving antimony pentachloride and ligand in a first solvent; dropwise adding tetra-isopropoxy titanium at 200-300rpm, and then continuously stirring for 30-50 minutes at 30-50 DEG C to obtain an antimony-titanium complex catalyst; adding a norbornene monomer and a perfluoromethyl vinyl ether monomer in a molar ratio of 1:1 into an autoclave after repeated vacuumizing and nitrogen charge; adding a second solvent and dissolving; adding the antimony-titanium complex catalyst, and reacting for 1-6 hours at 30-120 DEG C and under the pressure of 0.1-8MPa; pouring the reaction product into an ethanol solution containing 4-5wt% of hydrochloric acid; washing the obtained precipitate with ethanol to neutrality; and performing vacuum drying to obtain a norbornene-perfluoromethyl vinyl ether binary copolymer.

A method for producing difluoromethane, including the catalytic reaction of dichloromethane with hydrogen fluoride in the liquid phase, in the presence of chlorine, and in the presence of an ionic liquid catalyst consisting of the product of the reaction of antimony pentachloride with an organic salt having the general formula X+A, where A is a halide anion or hexafluoroantimonate, and X+ is a quaternary ammonium cation, quarternary phosphonium or ternary sulfonium. Further, equipment suitable for implementing said method.