摘要:
A novel ternary intercalation compound of a graphite with a metal fluoride and fluorine, which is represented by the formula C.sub.x F(MF.sub.z).sub.y wherein M is a metal is produced by reacting a graphite material with a metal fluoride in an atmosphere of fluorine gas at a temperature of 0.degree. C. to 400.degree. C. for at least a period of time to effect a weight increase in the graphite. The ternary graphite intercalation compound thus obtained has not only an excellent stability to humidity or moisture but also a high electrical conductivity. The novel ternary graphite intercalation compound according to the present invention may be practically used as a novel electrically conductive material and a catalyst of organic reactions.
摘要:
A method for recovering dissolved boron trifluoride from a hydrocarbon liquid in a vacuum column at moderate temperatures by trickling the hydrocarbon over metallic or ceramic packing in the column. Dissolved boron trifluoride catalyst is recovered from the crude oligomer reaction product resulting from the oligomerization of 1-decene.
摘要:
Perfluoroallyl fluorosulfate is prepared by reacting hexafluoropropene with sulfur trioxide in the presence of boric oxide, boron trichloride, boron trifluoride tri(lower alkyl) borate, boron oxychloride or boron oxyfluoride.
摘要:
Highly active, acidic sulfactive metal hydrogenation catalysts comprising Mo and/or W plus Ni and/or Co are prepared by methods comprising as the essential novel feature impregnating gamma alumina particles with an aqueous solution having dissolved therein one or more fluosilicates of cobalt and/or nickel, followed by drying and calcining. The resulting compositions contain uniformly distributed fluorine and SiO.sub.2 as active acidic promoters, intimately associated with the sulfactive metal components.
摘要:
Hexafluoropropene is reacted with liquid sulfur trioxide in the presence of boric oxide, boron trichloride, boron trifluoride, tri(lower alkyl) borate, boron trioxychloride or boron trioxyfluoride at from 0.degree. C. to 150.degree. C. to form perfluoroallyl fluorosulfate and the sultone thereof. The perfluoroallyl fluorosulfate can be homopolymerized or copolymerized with various fluoroethylenes to form resins useful as ion exchange resins or catalysts. The fluorosulfate groups on the resins can be hydrolyzed to form carboxylic acid groups or various corresponding salts. The sultone of perfluoroallyl fluorosulfate can be rearranged to form .beta.-fluorocarbonyl-.beta.-fluorosulfonyl-trifluorethyl fluorosulfate.
摘要:
Catalyst and process for octane upgrading of a light naphtha feed using fluorosulfonic acid and antimony pentafluoride to which a small amount of hydrogen fluoride is added. The catalyst is at least as active as the fluorosulfonic acid-antimony pentafluoride system and in addition shows enormously improved selectivity and lifetime.
摘要:
Partially deactivated hydrocarbon conversion catalysts comprising (a) one or more Lewis acids of the formula MX.sub.n where M is a metal selected from Group III-A, IV-B, V or VI-B elements of the Periodic Table, X is a halogen, n is the ratio of halogen atoms to atoms of M and varies from 1-8, and (b) a strong Bronsted acid are contacted with a hydrocarbon feedstock to recover the active or potentially active catalyst species from the partially deactivated catalyst stream prior to regeneration. In addition, potential organic and inorganic catalyst poisons present in said feedstock are removed therefrom during said contacting prior to introducing said feedstock into a hydrocarbon conversion process.
摘要:
Process for the conversion of aromatic hydrocarbons. Especially useful for reaction of an alkylating agent, preferably propylene, with an aromatic hydrocarbon. Novel feature is use of a catalyst system comprising TiF.sub.4 and a metal oxide which possesses surface hydroxyl groups.
摘要:
A process for the production of a solid acidic catalyst which process comprises reacting a compound of formula XF.sub.5 wherein X is phophorus, arsenic, antimony, bismuth, tantalum, vanadium or niobium with an inorganic oxide containing surface hydroxyl groups and having an Ho valve of less than -3.0. In a preferred embodiment alumina is partially fluorinated or sulphonated prior to reaction with the compound XF.sub.5, in which X is preferably antimony.
摘要:
Process for hydrofluorinating acetylene which comprises reacting acetylene with hydrogen fluoride in the vapor phase and in the presence of Epsilon -aluminum fluoride at a temperature from about 200*C to about 380*C to produce vinyl fluoride and 1,1difluoroethane, said Epsilon -aluminum fluoride is being prepared by evaporating an aqueous hydrofluoric acid solution of aluminum fluoride to dryness under vacuum at a temperature from 30*to 120*C optionally followed by heating the resulting product at a temperature from 120* to 500*C.