摘要:
Process for liquid-phase hydroformylation of at least one olefin by carbon oxide and hydrogen oxide in the presence of a catalytic composition that contains at least one compound of a transition metal, at least one phosphine oxide, and at least one organic-inorganic salt that does not contain tin or germanium; said salt is a quaternary ammonium salt and/or a quaternary phosphonium salt of general formula Q.sup.+ A.sup.-, in which Q.sup.+ represents an ammonium and/or a quaternary phosphonium and A.sup.- represents an anion. The process applies in particular to internal olefins.
摘要:
A process for carrying out a reaction on an organic feed, for example dimerization, co-dimerization, oligomerization or metathesis of olefins, as described in which the catalyst is a catalytic metal compound dissolved in a non-aqueous ionic medium which is not or is only slightly miscible with hydrocarbons. The reaction is carried out in a system comprising at least two treatment loops each comprising at least one reaction zone and at least one zone for separating the organic and polar phases between which the polar medium containing the catalytic metal compound, and the organic phase circulate. Fresh polar phase is injected into the second loop and used polar phase is eliminated from the first loop. The hydrocarbon to be transformed is injected into the first loop and the products are withdrawn from the second loop. The invention also concerns a unit for carrying out the process.
摘要:
In a process for liquid phase carbonylation of alcohols by carbon monoxide, the carbonylation reaction is carried out in a reaction zone at a temperature of 50° C. to 150° C. at a pressure in the range 0.5 MPa to 20 MPa in the presence of at least one catalyst comprising at least one rhodium and/or iridium complex and a halogenated promoter in at least one non-aqueous ionic liquid comprising at least one salt with general formula Q+A−, in which Q+ represents a quaternary ammonium and/or a quaternary phosphonium cation, said salt having a melting point of less than 90° C.; the non-aqueous ionic liquid containing at least the major portion of the catalyst is separated; and the separated non-aqueous ionic liquid containing at least the major portion of the catalyst is returned to the reaction zone.
摘要:
An improved catalytic composition for oligomerization, in particular dimerization, of monoolefins comprises the product resulting from bringing the following three constituents into contact in any order: a) at least one divalent nickel compound; b) at least one hydrocarbylaluminium dihalide, optionally enriched with an aluminium trihalide; and c) at least one organic Bronsted acid; the catalytic composition being pre-conditioned in a solvent before using it for oligomerization.
摘要:
A catalytic composition for the dimerization, the codimerization or the oligomerization of olefins is obtained by bringing into contact at least one nickel compound that contains a heterocyclic carbene with at least one hydrocarbylaluminum halide and optionally at least one organic solvent. It is used in a process of dimerization, codimerization or oligomerization of olefins.
摘要:
A catalytic composition for the dimerization, the codimerization or the oligomerization of olefins results from the dissolution of at least one nickel complex that contains a heterocyclic carbene in a liquid mixture that comprises at least one ammonium halide or quaternary phosphonium halide, at least one aluminum halide and optionally at least one organometallic aluminum compound. It is used in a process of dimerization, codimerization or oligomerization of olefins.
摘要:
A nickel catalytic system that makes it possible to obtain branched compounds from fatty substances by reacting simple olefins on polyunsaturated esters, which may or may not be conjugated, is described. The compounds that are obtained may be hydrogenated and used as lubricant bases or may be transformed according to known procedures into compounds of acid, alcohol, amine or amide type, used in varied applications.
摘要:
A supported catalyst with rhenium and also containing aluminium introduced by a compound of the formula (OR).sub.qAlR'.sub.r with R being a hydrocarbyl residue with from 1 to 40 carbon atoms, R' being an alkyl residue with from 1 to 20 carbon atoms, and with q and r equal to 1 or 2 with q+r=3. A process for the preparation of a catalyst comprising impregnating a compound of rhenium on a porous support formed by refractory oxides and/or alumino-silicates of an acid, neutral or basic nature, roasting at a temperature of form 200 to 950.degree. C. and impregnating with said aluminium compound. The catalyst is used for the metathesis of olefins.
摘要翻译:具有铼并且还含有由式(OR)qAlR'r化合物引入的负载催化剂,R是具有1至40个碳原子的烃基残基,R'是具有1至20个碳原子的烷基, q和r等于1或2,q + r = 3。 一种制备催化剂的方法,包括将铼化合物浸渍在由难溶氧化物和/或酸性,中性或碱性的耐热氧化铝和/或铝硅酸盐形成的多孔载体上,在200至950℃的温度下焙烧, 用所述铝化合物浸渍。 催化剂用于烯烃的复分解。
摘要:
The present invention concerns a process for the conversion of an olefinic C.sub.4 cut to polyisobutene and to propylene by metathesis. The process comprises three successive steps: (1) selective hydrogenation of diolefins with simultaneous isomerisation of 1-butene to 2-butenes, (2) polymerisation of the isobutene, including optional prior extraction of the isobutene, (3) metathesis of 2-butene with ethylene. Part or all of the C.sub.4 cut may originate from the metathesis of an olefinic C.sub.5 cut with ethylene after hydroisomerisation of the C.sub.5 cut. Application to C.sub.4 and C.sub.5 steam cracking cuts.
摘要:
The present invention concerns new catalytic compositions containing at least one compound of rhenium and aluminium corresponding to the general formula: O.sub.3 Re--O--�Al(OR)(L).sub.x --O!.sub.n --ReO.sub.3 in which R is a hydrocarbyl residue, for example alkyl, cycloalkyl, alkenyl, aryl and aryl or cycloalkyl which are substituted, containing from 1 to 40 carbon atoms, which residue can be substituted by alkoxy groups or by halogens, L is the synthesis solvent, x is equal to 0 or 1 and n is an integer of from 1 to 10. The invention also concerns the preparation of such compositions and the use thereof for the metathesis of olefins in a homogeneous phase.
摘要翻译:本发明涉及包含至少一种铼和铝化合物的新催化组合物,其对应于通式为:O 3 Re-O- [Al(OR)(L)x O] n -R Re 3,其中R为烃基残基,例如烷基 含有1至40个碳原子的环烷基,烯基,芳基和芳基或环烷基,该残基可以被烷氧基或卤素取代,L是合成溶剂,x等于0或1,n是 本发明还涉及这种组合物的制备及其在均相中烯烃复分解的用途。