摘要:
A process for producing fatty acids from C.sub.20 to C.sub.30 normal alkanes by air oxidizing the alkanes, followed by hydrogenating the product of the air oxidation and then oxidizing the hydrogenated product by nitric acid oxidation. The crude fatty acid product may be purified by a second hydrogenation to convert nitrogen impurities to amines and removal of the amines.
摘要:
Process for hydrogenolysis of an alkali metal or an alkaline earth metal salt of formic acid so as to produce methanol and a metal hydroxide corresponding to the formic acid salt wherein a catalyst of cobalt, rhenium, ruthenium, palladium, platinum or mixtures thereof is used.
摘要:
In the production of 1,6-hexanediol by oxidation of cyclohexane to produce an acidic oxidation product comprising adipic acid, followed by esterification of the acidic oxidation product and a subsequent hydrogenolysis of the ester, the improvement which comprises a prehydrogenation of the acidic oxidation product prior to esterification thereof.
摘要:
A stable hydrogen peroxide composition is provided of from 1% to 52% by weight hydrogen peroxide and 1,10-phenanthroline. The composition may contain other conventional additives suitable for stabilizing hydrogen peroxide.
摘要:
A process for inhibiting free-radical polymerization of an alpha,beta-unsaturated (&agr;,&bgr;-unsaturated) carboxylic acid, and for providing desired grade &agr;,&bgr;-unsaturated carboxylic acid for use following storage and transport is described herein. In particular, bulk storage and shipment such as with overseas transport is described. The process comprises combining the &agr;,&bgr;-unsaturated carboxylic acid with a phenolic inhibitor and a coinhibitor to form an inhibited mixture, storing the inhibited mixture, transporting the inhibited mixture, and removing the coinhibitor to provide the desired grade &agr;,&bgr;-unsaturated carboxylic acid for use. In preferred embodiments, the &agr;,&bgr;-unsaturated carboxylic acid is acrylic acid, the phenolic inhibitor is p-methoxyphenol, the coinhibitor is manganese cation, and removal of the coinhibitor is carried out using an ion exchange resin.
摘要:
A working solution for producing hydrogen peroxide, containing an alkylanthraguinone working compound dissolved in a solvent, is regenerated by contacting the working solution with a catalyst containing from 5% to 100% boehmite at a temperature of 25° C. to 150° C. At least a portion of the tetrahydro-alkylanthraquinone epoxide present in the working solution is converted to working compound to maintain the composition of the working solution within specified limits.
摘要:
A process for inhibiting free-radical polymerization of an alpha,beta-unsaturated (.alpha.,.beta.-unsaturated) carboxylic acid, and for providing desired grade .alpha.,.beta.-unsaturated carboxylic acid for use following storage and transport is described herein. In particular, bulk storage and shipment such as with overseas transport is described. The process comprises combining the .alpha.,.beta.-unsaturated carboxylic acid with a phenolic inhibitor and a coinhibitor to form an inhibited mixture, storing the inhibited mixture, transporting the inhibited mixture, and removing the coinhibitor to provide the desired grade .alpha.,.beta.-unsaturated carboxylic acid for use. In preferred embodiments, the .alpha.,.beta.-unsaturated carboxylic acid is acrylic acid, the phenolic inhibitor is .rho.-methoxyphenol, the coinhibitor is manganese cation, and removal of the coinhibitor is carried out using an ion exchange resin.
摘要:
A method for stabilizing hydrogen peroxide and the stabilized composition are claimed employing as a stabilizer a tin (II) salt of an acid selected from the group hydrofluoric acid, C6 to C17 saturated monocarboxylic acids and C2 to C6 saturated polycarboxylic acids, preferably oxalic acid. The tin content of hydrogen peroxide prepared from a tin (II) oxalate stock solution can be reduced by filtration to less than 1 mg/l if the tin oxalate stock solution has been properly aged.
摘要:
In the process of producing ethyl acrylate by the reaction of ethylene and acrylic acid in the presence of sulfuric acid, using phenolic type inhibitors, soluble manganese or cerium salts are additionally utilized.