摘要:
A process for the copolymerization of carbon monoxide with ethene and optionally another olefinically unsaturated compound in which process the monomers are copolymerized in the presence of a liquid diluent and a catalyst composition which is based on (a) a Group VIII metal compound, (b) an anion of an acid which is obtainable by combining a Br.o slashed.nsted acid with a Lewis acid, and (c) an organic oxidant in a quantity of less than 30 moles per mole of Group VIII metal.
摘要:
A process for converting an olefin having x carbon atoms into an olefin having x+1 carbon atoms wherein the process comprises the steps of: (i) reacting an olefin having x carbon atoms with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst to produce an alcohol having x+1 carbon atoms, and (ii) dehydrating the alcohol produced in step (i) in the presence of a dehydration catalyst to produce an olefin having x+1 carbon atoms characterized in that the hydroformylation catalyst used in step (i) is based on: (a) a source of cobalt, and (b) a ligand which contains phosphorus and nitrogen.
摘要:
A process for the carbonylation of a conjugated diene to a dicarboxylic acid, comprising the steps of (a) contacting a conjugated diene with carbon monoxide and water in the presence of a catalyst system including a source of palladium, a source of an anion and a bidentate phosphine ligand, to obtain a mixture comprising an ethylenically unsaturated acid and reversible diene adducts; (b) separating the obtained reaction mixture into a gaseous stream comprising unreacted conjugated diene and carbon monoxide, a first normally liquid stream comprising at least part of the ethylenically unsaturated acid and the reversible diene adducts, and a second normally liquid stream comprising the catalyst system in admixture with the ethylenically unsaturated acid; (c) recycling the second liquid stream obtained in step (b) to step (a); (d) separating the first liquid product stream obtained in step (b) into a stream comprising the ethylenically unsaturated acid and a stream comprising the reversible diene adducts; and (e) contacting the stream comprising the ethylenically unsaturated acid obtained in step (d) with carbon monoxide and water in the presence of a second catalyst system including a source of palladium, a source of an anion and a bidentate phosphine ligand.
摘要:
A process for the preparation of a dicarboxylic acid, comprising the steps of (a) contacting a conjugated diene with carbon monoxide and water in the presence of a catalyst system including a source of palladium, a source of an anion and a bidentate phosphine ligand, to obtain a mixture comprising an ethylenically unsaturated acid product; (b) reacting the mixture obtained in step (a) further with carbon monoxide and water to obtain the dicarboxylic acid in admixture with the ethylenically unsaturated acid; (c) separating the dicarboxylic acid from a liquid filtrate comprising the catalyst system; and (d) recycling at least part of the obtained liquid filtrate to step (a).
摘要:
The invention pertains to a hydroformylation process for the conversion of an ethylenically unsaturated compound to an alcohol comprising a first step of reacting at an elevated temperature in a reactor the ethylenically unsaturated compound, carbon monoxide, hydrogen, and a phosphine-containing cobalt hydroformylation catalyst, which are dissolved in a solvent, followed by a second step of separating a mixture comprising the alcohol and heavy ends from a solution comprising the catalyst and the solvent, followed by a third step of recycling the solution to the reactor.
摘要:
A process for the carbonylation of unsaturated compounds by contacting the unsaturated compound with carbon monoxide in the presence of a catalyst system comprising: (a) a source of palladium and/or platinum; and (b) an unsymmetrical bidentate diphosphine ligand of formula I, R1R2>P1−R3−P2 P1 differs from the phosphino group P2
摘要:
A process for the carbonylation of an ethylenically unsaturated compound with carbon monoxide and a co-reactant. The carbonylation reaction is carried out in the presence of a novel catalyst involving: a) a source of a group VIII metal; b) a bidentate diphosphine of formula I, wherein R1 represents a bivalent radical that together with the phosphorus atom to which it is attached is an optionally substituted 2-phospha-tricyclo[3.3.1.1{3,7}]-decyl group or a derivative thereof in which one or more of the carbon atoms are replaced by heteroatoms (“2-PA” group); wherein R2 and R3 independently represent univalent radicals of up to 20 atoms or jointly form a bivalent radical of up to 20 atoms; and wherein A1 and A2 independently represent optionally substituted alkylene groups and R represents an optionally substituted aromatic group; and, c) a source of anions.
摘要:
The present invention pertains to a process for the carbonylation of an epoxide by reacting it with carbon monoxide in the presence of a catalyst system containing two components, wherein the first component is a source of one or more metals selected from the group consisting of cobalt, ruthenium and rhodium, and the second component is a coordination complex of a tetrapyrrole compound with one or more of the metals belonging to the group consisting of groups IIIA and IIIB of the periodic system, lanthanides and actinides. The present invention also pertains a process for the preparation of a catalyst system.
摘要:
A carbonylation process, wherein formaldehyde or a derivative thereof is reacted with carbon monoxide in the presence of a catalyst composition including: a) an acidic compound with pKa value below −1, and b) a sulfone.
摘要:
The invention relates to a process for the carbonylation of acetylenically unsaturated compounds, whereby a feedstock comprising an acetylenically unsaturated compound and a relatively minor amount of an 1,2-alkadiene compound is contacted under carbonylation conditions with carbon monoxide and a co-reactant, in the presence of a catalyst system, based on: a) a source of cations of one or more metals of Group VIII of the Periodic Table; b) a phosphine having an aromatic substituent which contains an imino nitrogen atom separated by at least one bridging carbon atom from the phosphorus atom, and c) a protic acid, characterized in that the catalyst system is further based on d) a monodentate monophosphine or monophosphite.