Abstract:
This specification discloses a process of reacting an acetic acid derivative with ethylene in the presence of a catalyst. The acetic acid derivatives include esters, the amide, substituted amides, and the anhydride of acetic acid. The catalyst is insoluble in the acetic acid derivatives, the ethylene, and the reaction products thereof and is an oxide of manganese wherein the manganese has a valence at least as great as 3. The catalyst, following the reaction, can be separated from the reaction mixture and regenerated by heating in the presence of an oxygencontaining gas. Thereafter, the regenerated catalyst may be employed further for the reaction of an acetic acid derivative with ethylene.
Abstract:
Methanol and dimethyl ether are converted to a reaction product containing olefins. The conversion is carried out employing a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight.
Abstract:
A carbonylation process is provided for conversion of olefinically unsaturated hydrocarbons to a mixture of esters or acids with an increased ratio of normal:iso (i.e., straight: branched) ester or acid by reaction with carbon monoxide and a hydroxylic compound, said process being carried out in the presence of a palladium salt complexed with a phosphine ligand as a catalyst and tin cocatalysts or promoters. For example, the catalyst may be palladium dichloride bis(triphenylphosphine) and the tin cocatalyst or promoter present may be stannous chloride dihydrate.
Abstract:
This specification discloses a process for the alkylation of olefins. The olefins are alkylated by contacting in the presence of an alkylating agent with a catalyst. The catalyst comprises a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index of about 1 to 12, and containing phosphorus incorporated with the crystal structure thereof in an amount of at least about 0.78 percent by weight. The zeolite, preferably, also has a dried crystal density of not less than about 1.6 grams per cubic centimeter. Olefins that may be alkylated include ethylene, propylene, butene-2 and isobutylene. Alkylating agents include methanol, dimethyl ether, and methyl chloride.
Abstract:
Process of converting alcohols, aliphatic mercaptans, aliphatic sulfides, aliphatic halides and/or aliphatic amines to other desirable products by contacting such with a particular type of aluminosilicate molecular sieve catalyst at elevated temperature. Products produced by such conversion vary with temperature, with conversion to aromatic rings and substituted aromatic rings predominating at higher temperatures of about 300* to 500*C. The catalyst is a zeolite having a high silica to alumina ratio of at least about 12 and a constraint index of about 1 to 12. It also preferably has a crystal density in the hydrogen form of not substantially less than about 1.6.
Abstract:
A METHOD IN WHICH AN AQUEOUS MANGANESE (II) SOLUTION IS TREATED WITH A TERTIARY AMINE OR AMMONIA IN A FREE OXYGEN-CONTAINING ATMOSPHERE RESULTS IN MANGANESE (II) OXIDE OR MANGANESE (II) HYDROXIDE PRECIPITATION WHICH, IN SITU, IS RAPIDLY OXIDIZED TO MANGANESE (III) OXIDE FROM WHICH, UPON TREATMENT WITH A SUITABLE ACID, PARTICULARLY AN ALIPHATIC CARBOXYLIC ACID, THE MANGANESE (III) SALT OF SAID ACID IS OBTAINED. THE COMPOUNDS ARE USEFUL AS CATALYSTS FOR THE SYNTHESIS OF LACTONES FROM OLEFINS.