Abstract: This invention relates to a process for the purification of dicarboxylic acids obtained from the hydrolysis of carboxylic acid triglycerides having more than one acid functional group. The process comprises in particular the separation of at least some of the glycerine from the hydrolysis product in an aqueous phase, evaporating and/or distilling the resultant organic phase and recovering at least some of the evaporated and/or distilled dicarboxylic acids through at least one crystallisation operation.

Abstract: A method for oxidizing hydrocarbons, in particular saturated hydrocarbons, for producing peroxides, alcohols, ketones, aldehydes and/or diacids is described. Also described, is a method for oxidizing a cycloaliphatic saturated hydrocarbon using molecular oxygen for producing ketones/alcohols, and more precisely for oxidizing cyclohexane into cyclohexanol and cyclohexanone using molecular oxygen.

Abstract: It is an object of this invention to provide a method for efficiently synthesizing monocarboxylic acid, dicarboxylic acid, and tricarboxylic acid with the use of unsaturated triacyl glycerol as a starting material and hydrogen peroxide as an oxidant. Such method comprises allowing unsaturated triacyl glycerol to react with hydrogen peroxide in the presence of a quaternary ammonium polybasic acid hydrogen salt and at least one member selected from the group consisting of tungstic acid, heterotungstic acid, and salts thereof.

Abstract: Process for the production of saturated monocarboxylic acids and triglycerides of saturated carboxylic acids having more than one acid functionstarting from non-modified vegetable oils containing triglycerides of unsaturated fattyacids, comprising the oxidative cleavage of the unsaturated fatty acids.

Abstract: The present invention relates to a method for preparing dicarboxylic acids from saturated and cycloaliphatic hydrocarbons by oxidation at a reaction temperature comprised in the range of 25 to 300° C. in an autoclave using a solid heterogeneous catalyst. More particularly, the method of the invention relates to a method for preparing adipic acid (AA) from cyclohexane (CH) by selective oxidation.

Abstract: The present invention concerns a new efficient method for the selective transformation, under mild conditions and in aqueous medium, of gaseous (ethane, propane and n-butane) and liquid (n-pentane, n-hexane, cyclopentane and cyclohexane) alkanes into carboxylic acids bearing one more carbon atom, characterized by a single-pot low-temperature (25-60° C.) reaction of the alkane with carbon monoxide in water/acetonitrile liquid medium, either in the absence or in the presence of a metal catalyst, in systems containing also an oxidant (a peroxodisulphate salt).

Abstract: A method for preparing a polycarboxylic composition, includes a stage in which a monosaccharide composition undergoes an electrochemical oxidation treatment carried out in the absence of sodium hypochlorite and in the presence of a) an amine oxide and b) a carbon-based anode. Preferably, the anode is selected from the group comprising carbon felt and granular active carbon. The electrochemical oxidation treatment can be carried out advantageously at a pH, preferably of between 11.5 and 14. The method makes it possible to obtain novel products, especially 2-carboxy-2, 3, 4-trihydroxypentane-dioicious acid, the salts and derivatives thereof.

Abstract: Methods comprising: providing an oxidation catalyst bed; and starting up the oxidation catalyst at a temperature of 360° C. to 400° C. with an amount of air of 1.0 to 3.5 standard m3/h and a hydrocarbon loading of 20 to 65 g/standard m3, such that a hot spot having a temperature of 390° C. to <450° C. is formed in the first 7-20% of the catalyst bed.

Abstract: This invention relates to the selective oxidation of organic compounds. According to the invention organic compounds are selectively oxidized using a peracid or a source of peracid, a transition metal based heterogeneous catalysts and a borate or boric acid in the presence of water. Using the process of the present invention, both excellent conversion and product selectivity maybe obtained.

Abstract: A process for preparing amphiphilic compounds having at least two hydrophilic and at least two hydrophobic groups by reacting an olefinic substrate having at least two double bonds with an organic hydroperoxide to form an oxirane ring, opening, the oxirane ring with an alcohol in the presence of a catalyst system comprising a molybdenum compound as a first catalyst component and a second catalyst component selected from the group consisting of boron trifluoride, alumina, 1,8-diazzabicyclo-(5.4.0)-undec-7-ene, 1,4-diazabicyclo-(2,2,2)-octane.

Abstract: An oxidation reaction mixture (e.g. adipic acid, benzoic acid, butenediol) and an oxidation catalyst are efficiently separated from a reaction mixture with the use of an aqueous solvent (e.g. methyl benzoate, benzonitrile) containing at least water (e.g. water) and a non-water-soluble solvent separable from the aqueous solvent, the reaction mixture being obtained by oxidizing a substrate (e.g. a hydrocarbon) in the presence of an imide compound such as N-hydroxyphthalimide shown by the following formula (1) as the oxidation catalyst, wherein R1 and R2 represents a substituent such as a hydrogen atom and a halogen atom; R1 and R2 may together form a double bond, or an aromatic or nonaromatic 5- to 12-membered ring; X stands for O or OH; and n is 1 to 3. No decomposition of the oxidation catalyst is observed in this separation process.

Abstract: A process for making an alkanedioic acid in which a mixture of a cycloalkene, a base and a solvent is contacted simultaneously with both oxygen and ozone at a temperature between 40 and 60 degrees Centigrade.

Abstract: According to the present invention there is provided a process for retarding the discoloration of dicarboxylic acids, said process comprising:

Abstract: A dimeric fatty acid and/or dimeric fatty ester product having a low residual content of interesters is obtained by hydrolyzing the interesters to provide monomeric unsaturated fatty acids and alcohols as the hydrolysates and thereafter removing the hydrolysates from the dimeric fatty acid and/or dimeric fatty ester product.