摘要:
Olefins are converted to aldehydes and/or alcohols having one more carbon atom than the olefin by reacting the olefin with carbon monoxide and hydrogen in the presence of an in situ formed catalytic complex of a Group VIII metal, carbon monoxide and a trivalent ligand, the metal being introduced into the reaction zone in the form of a solution of a water-soluble inorganic salt dissolved in a solvent comprised of at least 40% by volume of a polyalkylene glycol, the polyalkylene glycol acting as a coupling agent preventing precipitation of the metal prior to formation of the catalyst complex.
摘要:
This invention provides a novel hydroformylation catalyst which is a ligand stabilized complex of platinum dihalide dimer and stannous halide.A preferred species of the invention hydroformylation catalyst can be represented by a formula corresponding to the chemical structure: ##STR1## wherein R is an organic radical such as alkyl or aryl, and X is a halogen radical.
摘要:
This disclosure is concerned with the use of supported platinum halide, Group IVA metal halide catalysts suitable for the hydroformylation of .alpha.-olefin substrates to predominantly linear, straight-chain aldehydes.
摘要:
An ethylenically unsaturated hydrocarbon is hydroformylated to an aldehyde having one more carbon than the unsaturated hydrocarbon by contacting the unsaturated hydrocarbon, carbon monoxide and hydrogen in the presence of a reaction medium comprising a Group VIII noble metal and a bicyclo or tricyclo(heterocyclo) saturated amine having 2 to 10 carbons, 1 to 4 nitrogens and at least one nitrogen in a bridgehead position. Liquid phase contacting is employed with the catalyst dispersed in a liquid phase at temperatures from 50.degree. to about 200.degree. C. and pressures from 1 to 300 atmospheres. A typical reaction comprises contacting ethylene, carbon monoxide and hydrogen at a temperature of about 88.degree. C. and a pressure of 50 atmospheres with an inert liquid reaction medium containing rhodium chloride and triethylenediamine. Preferably the reaction medium also contains a biphyllic ligand which is a trivalent phosphorus, antimony or arsenic organic compound. The presence of the heterocyclo saturated amine has been found to increase the yield of the aldehyde without increasing the yield of alcohol and/or dimerized products.
摘要:
Aldehydes branched at the second carbon are surprisingly hydrogenated selectively in good yield to the corresponding primary alcohols over a copper catalyst by using a hydrogen/carbon monoxide mixture having molar ratio about 2/1; simultaneously said mixture is depleted of hydrogen to a level where it can be used directly in the Oxo-hydroformylation process without further pretreatment.
摘要:
Production of aldehydes and alcohols by oxo synthesis involving the reaction of olefinic compounds with carbon monoxide and hydrogen at elevated temperatures and under elevated pressures in the presence of amine-modified carbonyl complexes of cobalt or rhodium. Diamino diphenyl alkanes are used as modifying agents.
摘要:
This invention relates to the hydroformylation of alkyl olefins to form aldehydes by the addition of hydrogen and carbon monoxide using ligand stabilized platinum(II) dihalide complexes in combination with Group IVB metal halides as catalysts.
摘要:
Novel rhodium complexes having formula HRhCO(L(OR)3)3 are produced by reacting XRhCO(L(OR)3)2, L(OR)3 and a metal borohydride under controlled conditions. In the formulae, L is As, Sb or P; R is alkyl and/or aryl; X is a halogen. The complexes are rate improving hydroformylation catalysts.
ARE TRANSFORMED BY A SINGLE-STAGE PROCESS INTO THE PRODUCT COMPRISING SATURATED ALDEHYDES HAVING THE FORMULA:
AND THE CORRESPONDING ALPHA, BETA-UNSATURATED ALDEHYDES WHEREIN R1 and R2 each independently represents a hydrogen substituent or a hydrocarbon substituent of between 1 and about 12 carbon atoms. The transformation is achieved by contacting the olefin conjointly with hydrogen, carbon monoxide, and a solution in a special hydroxylic organic solvent of a rhodium carbonyl complex, a triaryl phosphine, triaryl arsine, or triaryl stibine, and an aldol condensation catalyst.
摘要:
THE PRODUCTION OF BUTYRALDEHYDES AND BUTANOLS WITH A PREDOMINANT PROPORTION OF STRAIGHT-CHAIN COMPOUNDS BY THE OXO PROCESS IN TWO SUCCESSIVE REACTION STAGES, A HIGHER TEMPERATURE PREVAILING IN THE SECOND STAGE THAN IN THE FIRST STAGE AND A TEMPERATURE WHICH IS UNIFORM OVER THE ENTIRE STAGE BEING MAINTAINED AT LEAST IN THE FIRST STAGE. BUTYRALDEHYDE MAY BE USED FOR THE PRODUCTION OF 2-ETHYLHEXANOL.