Abstract:
A process is provided for the chlorination of ethane using chlorine as the chlorinating agent to produce hydrogen chloride (HCl) and vinyl chloride (VCM) and heavies.
Abstract:
A method of making α,ω-diiodoperfluoroalkanes includes combining: diatomic iodine, at least one perfluoroalkylene oxide represented by the formula wherein Rf represents a perfluoroalkyl group; and at least one of: a) a first metallic compound comprising nickel, and a second metallic compound comprising molybdenum that is compositionally different from the first metallic compound; or b) a metallic alloy comprising from 50 to 70 percent by weight of nickel and from 20 to 40 percent by weight of molybdenum, based on the total weight of the metallic alloy, thereby producing at least one product represented by the formula I(CF2)nI, wherein n independently represents an integer in the range of from 1 to 11. The total weight of the at least one product wherein n is 3 or greater exceeds the total weight of the at least one product wherein n is 1 or 2 by a factor of at least 4.
Abstract:
The present invention provides a process for preparing a fluorine-containing olefin represented by Formula (2): R 1 CF=CH(R 2 ) wherein R 1 is F, H, F(CF 2 ) n -(n is an integer ranging from 1 to 10) or H(CF 2 ) m - (m is an integer ranging from 1 to 10) and R 2 is H, F(CF 2 ) n - (n is an integer ranging from 1 to 10) or H(CF 2 ) m - (m is an integer ranging from 1 to 10), the process including a step of reacting a fluorine-containing alcohol represented by Formula (1): R 1 CF 2 CH(R 2 )OH, wherein R 1 and R 2 are the same as above, with a reducing gas in the presence of a specific metal oxide. According to the process of the invention, a desired fluorine-containing olefin can be produced with high selectivity in a single reaction step using a fluorine-containing alcohol as a raw material.
Abstract:
A process is disclosed for making CF 3 CF=CHF. The process involves reacting CF 3 CCIFCCI 2 F with H 2 in a reaction zone in the presence of a catalyst to produce a product mixture comprising CF 3 CF=CHF. The catalyst has a catalytically effective amount of palladium supported on a support selected from the group consisting of alumina, fluorided alumina, aluminum fluoride and mixtures thereof and the mole ratio of H 2 to CF 3 CCIFCCI 2 F fed to the reaction zone is between about 1 :1 and about 5:1.. Also disclosed are azeotropic compositions of CF 3 CCIFCCI 2 F and HF and azeotropic composition of CF 3 CHFCH 2 F and HF.
Abstract:
A process is disclosed for making CF 3 CF=CHF. The process involves reacting CF 3 CCIFCCI 2 F with H 2 in a reaction zone in the presence of a catalyst to produce a product mixture comprising CF 3 CF=CHF. The catalyst has a catalytically effective amount of palladium supported on a support selected from the group consisting of alumina, fluorided alumina, aluminum fluoride and mixtures thereof and the mole ratio of H 2 to CF 3 CCIFCCI 2 F fed to the reaction zone is between about 1 :1 and about 5:1.. Also disclosed are azeotropic compositions of CF 3 CCIFCCI 2 F and HF and azeotropic composition of CF 3 CHFCH 2 F and HF.
Abstract translation:公开了一种制造CF 3 CF = CHF的方法。 该方法包括在反应区中在催化剂存在下使CF 3 N CCIFCCI 2 H 2 F与H 2 H反应,生成包含CF 3 SUB> CF = CHF。 催化剂具有负载在选自氧化铝,氟化氧化铝,氟化铝及其混合物的载体上的催化有效量的钯,并且H 2 CO 2与CF 3的摩尔比< 进料到反应区的反应混合物的重量比为约1:1至约5:1。还公开了CF 3 CO 3的共沸组合物, 2 F和HF以及CF 3 CHFCH 2 F和HF的共沸组合物。
Abstract:
Methane is used as the selective dehydrating agent for the production of 2,3,3,3-tetrafluoro-l-propene (R1234yf) from 2,2,3,3,3-pentafluoro-l-propanol. Supported transition metal catalysts are prepared and used for this reaction with high activity. Almost 58% selectivity to R1234yf is obtained at an alcohol conversion level of 60% using unsupported Ni-mesh as the catalyst. Pd and Pt show almost similar level of conversion; however, the selectivity to the desired product is low. The activity of the metal catalyst was found to be a function of the type of support material, activated carbon showing better activity than alumina. Different important process parameters such as temperature, pressure, and contact time are studied to optimize the process. High pressure and temperature are deleterious to the rate of 1234yf formation; yet, the highest yield to 1234yf is obtained while performing a reaction at 494°C with a contact time of 23 sec.
Abstract:
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF3X1 with a compound of CX2H=CHX3, wherein X1, X2, and X3 are each independently selected from the group consisting of fluorine, chlorine, bromine and iodine, to produce a reaction product comprising a compound of CF3CH=CHX3, wherein X3 is as described above; and when X3 is not fluorine, fluorinating the compound to produce 1,3,3,3-tetrafluoropropene. The process in another embodiment comprises preparing tetrafluoropropene comprising thermally cracking one or more compounds capable of producing a reaction mixture which preferably comprises diflurocarbene radicals and vinylidene fluoride, and converting said reaction mixture into -tetrafluoropropene (1,3,3,3-tetrafluoropropene).
Abstract:
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises reacting a compound of the formula (I) CHFX 2 with a compound of formula (II) CH 2 =CF 2 to produce a reaction product comprising a compound of formula (III) CHXFCH 2 CXF 2 , wherein each X is independently selected from the group consisting of chlorine, bromine and iodine, and exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.
Abstract:
Procédé de fabrication du 1,1-difluoroéthane par fluoration en phase liquide du 1,2-dichloroéthane au moyen de l’acide fluorhydrique, en présence comme catalyseur d’un acide de Lewis, et de FeC1 3 comme cocatalyseur. Procédé de fabrication du 1,1-difluoroéthylène le mettant en oeuvre.