摘要:
A process for simultaneously producing an epoxide and a carboxylic acid from an olefin and an aldehyde, respectively, by co-oxidation over a catalyst in the presence of oxygen is described. The catalyst is made by precipitating silver oxide in the presence of copper(II) oxide, copper(II) borate or a mixture thereof. These novel heterogeneous catalysts provide higher selectivities to the epoxide than those obtainable with commercial catalysts.
摘要:
The oxidation of isobutane in the presence of a novel, soluble catalyst of the formula Fe.sub.3 O(Pivalate).sub.6 (MeOH).sub.3 Cl is disclosed. Tertiary-Butyl alcohol, tertiary-butyl hydroperoxide, and acetone are produced. A significant increase in isobutane conversion is obtained without a large decrease in selectivity to tertiary-butyl alcohol and tertiary-butyl hydroperoxide using a small amount of catalyst. Tertiary-butyl alcohol is useful as a gasoline additive and tertiary-butyl hydroperoxide is used for the production of propylene oxide. Acetone has a variety of uses as well.
摘要:
Substantially quantitative yields of bibenzyl hydroperoxide and bibenzyl dihydroperoxide can be obtained when oxygen is reacted with bibenzyl (1,2-diphenylethane) in the presence of a minor amount of sodium bicarbonate at a temperature within the range of about 100.degree. to about 160.degree. C. to provide an oxidation product wherein the bibenzyl is substantially selectively converted to the bibenzyl hydroperoxides. The bibenzyl hydroperoxides can be used as raw materials for the production of propylene oxide by reacting the bibenzyl hydroperoxides with propylene.
摘要:
A process is disclosed for preparing synthetic lubricant base stocks having improved properties. Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts. When a mixture of alpha and internal-olefins having up to 50 wt. % internal-olefin is used, and the oligomers prepared therefrom are hydrogenated, a synthetic lubricant base stock having a higher viscosity index and a lower pour point is prepared.
摘要:
A process for the preparation of isobutylene oxide and isobutyric acid from isobutylene and isobutyraldehyde, respectively, by a co-oxidation process conducted in the presence of oxygen and a cobalt salt catalyst at a temperature of about 20.degree. to about 180.degree. C. is disclosed.
摘要:
Diketones useful as intermediates for reaction with carboxylic acids to provide surfactants and for reaction with amine adducts to provide fuel additives are prepared from polyoxyalkylene glycols having a molecular weight of about 200 to about 2,000 and having the formula: ##STR1## wherein R is hydrogen or methyl and wherein n is a positive number having a value of 1 to about 50,The polyoxyalkylene polyol is oxidized in the presence of a halogenated alkane solvent and a ruthenium catalyst with an alkali metal or alkaline earth metal hypochlorite at a temperature of about 10.degree. to about 50.degree. C. and a pressure of about 0 to 1,000 psig. over a period of about 10 to about 20 hours to provide the corresponding diketone having the formula: ##STR2## wherein R and n have the meaning given above.
摘要:
A process for the production of detergent range alcohols and ketones by reacting an alkane with a hydroperoxide in the presence of a transition metal porphyrin catalyst is described. Preferred hydroperoxides include cumene hydroperoxide and tertiary butyl hydroperoxide. The transition metal porphyrin catalyst may be transition metal phthalocyanines, transition metalloporphines and the like. The transition metal itself may be iron, manganese, cobalt and mixtures thereof. Suitable ligands include, but are not limited to imidazoles and lithium borate. Other useful additives include alkali metal perchlorates, such as sodium perchlorate, iodosylbenzene and alkali metal superoxides, such as potassium superoxide, and phase transfer catalysts such as tetrabutyl ammonium bromide.
摘要:
Tertiary butyl alcohol is prepared by the catalytic decomposition of tertiary butyl hydroperoxide, preferably in solution in tertiary butyl alcohol, in the presence of a metal phthalocyanine catalyst promoted with a rhenium compound, such as a phthalocyanine of a metal of Group IB, Group VIIB or Group VIIIB of the Periodic Table (e.g., chloroferric phthalocyanine and rhenium heptoxide-p-dioxane or oxotrichloro-bis-(triphenylphosphine) rhenium V).
摘要:
Complexes made by reacting propylene glycol with a vanadium compound soluble therein at an elevated temperature. Mild stripping of the water subsequent to complex formation is preferred. The ratio of moles of propylene glycol to gram atoms of vanadium in the complex forming reaction ranges from 7:1 to 20:1.
摘要:
Methyl formate is removed from propylene oxide by treatment with a selected base such as sodium hydroxide in water and glycerol. Selected inert salts may be added. The rate of methyl formate hydrolysis by selected bases was increased to commercially acceptable levels by addition of the glycerol. The glycerol and inert salts reduced the amount of residual water in the propylene oxide.