Abstract: Boron, aluminum and gallium C.sub.1 -C.sub.18 perfluoroalkanesulfonates (CF.sub.3 (CF.sub.2).sub.n SO.sub.3).sub.3 M (M=B, A1, Ga; n=0-17) as well as perfluororesin sulfonates such as Nafionates are new, highly effective Friedel-Crafts catalysts. In contrast to volatile aluminum and boron trihalides, the Group III-B perfluoroalkanesulfonates are generally of low or no volatility and, except for boron triflate and some of its homologs, only sparingly soluble incommon organic solvents. This allows their use as solid or supported Friedel-Crafts catalysts of wide utility and scope in continuous heterogenous catalytic processes. At the same time, boron triflate and related lower perfluoroalkanesulfonates are particularly efficient soluble catalysts in solution reactions.

Abstract: Polychromium compounds such as octakis(.mu.-trimethylsilylmethyl) tetrachromium(II) as well as a process to make these new compounds are disclosed. The compounds are useful in the production of, e.g., dual valence chromium catalysts useful in the production of linear low density polyethylene.

Abstract: Provided is a process for preparing a diaryl or a mixture of diaryls represented by any or a combination of the following formulae (II), (III) and (V), characterized in that a diaryliodonium salt represented by the following formula (I) is reacted in a solvent in the presence of a transition metal catalyst and a reducing metal at a temperature in the range of room temperature to 100.degree. C.:[Ar.sub.1 -I.sup..sym. -Ar.sub.2 ]X.sup..crclbar. (I)Ar.sub.1 -Ar.sub.1 (II)Ar.sub.1 -Ar.sub.2 (III)Ar.sub.2 -Ar.sub.2 (IV)wherein Ar.sub.1 and Ar.sub.2, which may be alike or different, are each an aryl group which may have a substituent group or groups and X.sup..crclbar. is a counter ion which is inert to said reaction.

Abstract: Alkylbenzenes are prepared by alkylating benzene with C.sub.2 -C.sub.30 alkenes by contact at temperatures of -20.degree. C. to 350.degree. C. with a novel siliceous composition prepared by impregnating porous silica with aluminum hydride and subsequently heating the impregnated silica to a temperature of from about 300.degree. C. to about 900.degree. C. in a non-oxidizing environment.

Abstract: An aromatic hydrocarbon is alkylated with an alpha olefin containing three to 10 carbon atoms, or more, by intimately contacting the alpha olefin and the aromatic hydrocarbon with a catalyst produced by contacting (a) a refractory metal oxide/silica support such as alumina/silica wherein the silica content of the support is from two to 95 weight percent and the metal oxide content of the support is from five to 98 percent with (b) a tris(cyclopentadienyl)trinickel dicarbonyl. This process results in the production of significant quantities of alkylated aromatic hydrocarbons.

Abstract: Process for polymerizing olefinic hydrocarbons at a temperature from 0.degree. to 90.degree. C., preferably from 20.degree. to 80.degree. C. in the presence of a catalyst containing aluminum oxide and, per part by weight thereof, boron oxide in a proportion of 0.01 to 1, preferably 0.07 to 0.15 part by weight and halogen in a proportion of 0.5 to 20%, preferably 4 to 12%, said catalyst resulting from the reaction of an aluminum compound of formula AlX.sub.y R.sub.(3-y) where X is halogen, R is a hydrocarbon radical and y is selected from 1, 3/2, 2 and 3, with a carrier containing aluminum oxide and boron oxide in a proportion to aluminum oxide from 1 to 100%.

Abstract: A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains aromatic substrates the catalyst may be generated in situ from a metallic hexacarbonyl. The arene-metal tricarbonyl catalyst is more selective than conventionally employed Friedel-Craft catalysts in that it yields generally para isomers with little of the ortho variety and very little if any of the meta variety when the aromatic substrate is reacted with organic halide. It is also possible to form the arene-metal tricarbonyl catalyst outside of the reaction vessel and then proceed by adding it to the vessel containing the substrate and the organic halide as is the case with dehydrohalogenation reactions wherein there are no aromatic rings available, the substrate in that instance being aliphatic.

Abstract: A process for preparing alkylbenzenes, which comprises alkylation of benzene or alkylderivatives thereof with olefines in the presence of a catalyst comprising a product prepared by reacting metallic aluminum with a chlorinated hydrocarbon in a medium of benzene or an alkylbenzene at a weight ratio between metallic aluminum and said chlorinated hydrocarbon ranging from 1:0.08 to 1:17 respectively; said alkylation being conducted at a temperature within the range of from 50.degree. to 180.degree. C. under a pressure within the range of from 2 to 20 atm. The catalyst employed in the process according to the present invention is non-hygroscopic; it is prepared by rather simple technology; said catalyst ensures a high yield of the desired products (up to 80-96% as calculated for the reacted olefine) while retaining a high quality thereof (for example, purity degree of ethylbenzene prepared thereon is 99.9179% by weight).