Abstract:
Die Erfindung betrifft neue Katalysatorsysteme auf der Basis von wasserunlöslichen Rhodium-Komplexverbindungen mit Diphosphin-Liganden. Die Diphosphin-Liganden liegen als Ammoniumcarboxylate, -sulfonate oder -phosphonate mit ein- bzw. mehrfach geladenem Diphosphin-Anion und der korrespondierenden Anzahl Ammonium-Kationen als Gegenionen vor. Die Erfindung betrifft ferner die Verwendung der neuen Katalysatorsysteme bei der Herstellung von Aldehyden durch Umsetzung von olefinisch ungesättigten Verbindungen mit Wasserstoff und Kohlenmonoxid in homogener Phase.
Abstract:
Ammonium diphosphine-carboxylates, -sulphonates or -phosphonates of formula (I) are new (where, R1 = COO , SO3 , PO3 or 2-aminoethane bisphosphonate Ä-NH-CH2-CH(PO3 )2Ü group; R2 = linear alkylene with 1-8 carbon (C) atoms, 2-6 C alkylene containing oxygen, 3-10 C cycloalkylene or a group of formulae(II), (III), (IV) or (V); at least one of a, b, c, d, e, f, g, h, k, l = 1, otherwise 0; x = 0 or 1; R3, R4 = 4-26 C alkyl, optionally substituted 6-10 C aryl or 6-10 C cycloalkyl or benzyl and R3 may also = H).
Abstract:
The separation of phosphine oxides (I) and alkylarylphosphines (II) from an organic reaction mixture from homogeneous hydroformylation is carried out using a catalyst system of organometallic complex compounds and a molar excess of ammonium salts (III) of aromatic phosphines as ligand. The reaction mixture is extracted with a 0.01-0.5 wt.% alkali hydroxide solution, then the aqueous phase containing (I) and (II) is separated. (III) are e.g. alkyl- and/or arylammonium salts (IIIA) of sulphonated or carboxylated triarylphosphines or salts (IIIB) of amino-substituted triarylphosphines and organic carboxylic or sulphonic acids, etc;in which X, A, R = a sulphonate (SO3 ) or carboxylate (COO ) group or R = a phosphonate (PO3 ) or 2-aminoethane bisphosphonate Ä-NH-CH2-CH(PO3 )2Ü group; at least one of a , b, c = 1, the rest = 0 or 1, n = 1, 2 or 3; R , R - 4-30 carbon (C) alkyl or 6-10 C aryl or cycloalkyl and R may also = hydrogen (H); R = H or 1-12 C alkyl; R = 1-25 C alkyl or 6-10 C aryl; R = linear 1-8 C alkylene, 2-6 C alkylene with ether oxygen (O) in the chain, 3-10 C cycloalkylene or a group e.g. of formula (IVA); at least one of d, e, f, g, h, k, l, m, o, p = 1, the rest = 0 or 1; y = (d+e+f+g+h+k+l+m+o+p); x = 0 or 1; R , R = 4-26 C alkyl, benzyl or optionally substituted 6-10 C aryl or cycloalkyl and R may also = H; R = H or 1-12 C alkyl; R = linear 1-8 C alkylene, 2-4 C alkylene with ether O in the chain, 3-10 C cycloalkylene, (IVA; h = 0) or (IVB; e = 0); R = 1-25 C alkyl or 6-10 C aryl; q = 0 and r, s, t = 1; or q, r = 1 and s, t = 1 or 2; or, if R = (IVA) or (IVB), q = 1, r = 0 and s, t = 0 or 1.
Abstract:
Mixtures of isomeric decyl alcohols are obtained by hydroformylation of 1-butene- and 2-butene-containing mixtures in two stages to give aldehyde mixtures, condensation of the isolated and combined aldehyde mixtures to form an aldol mixture, and isolation and hydrogenation of the aldol mixture. The mixture of isomeric decyl alcohols, esterified with phthalic acid, gives a mixture of isomeric decyl phthalates which are useful as plasticizers.
Abstract:
of the disclosure Mixtures of isomeric decyl alcohols are prepared by hydroformylation of 1-butene- and 2-butene-containing mixtures in two stages to give aldehyde mixtures, condensation of the aldehyde mixtures, separated off and combined, with formation of an aldol mixture and separating off and hydrogenating the aldol mixture. The first stage of the hydroformylation proceeds in the presence of rhodium catalysts dissolved in water, the second stage in the presence of cobalt catalysts homogeneously dissolved in the reaction medium. The mixture of isomeric decyl alcohols, when esterified with phthalic acid, yields a mixture of isomeric decyl phthalates which are used as plasticizers.
Abstract:
The invention relates to a method for the catalytic hydrogenation of organic compounds in the gas phase. The circulated gas leaving the hydrogenation reactor and containing the reaction product is compressed in a compressor without prior cooling and then heats the feedstocks to reaction temperature in a superheater. The circulated gas stream is further cooled in a hot gas heat exchanger by reactants conducted in counter-current; as a result the reaction product substantially condenses out. After addition of fresh gas and feedstock, the circulated gas is again passed to the hydrogenation reactor via a purification column.
Abstract:
6230 Frankfurt, 29.06.1992 PAT/rcht-dbh Hoe92/Y012 Hoechst Aktiengesellschaft, Frankfurt am Main 80 of the disclosure: Mixtures of isomeric decyl alcohols are obtained by oligomerization of propylene in the presence of deactivated zeolites as catalysts, separation of the C9-olefins from the oligomer mixture, hydroformylation of the C9-olefins to C10-aldehydes, and hydrogenation of the C10-aldehydes. The mixtures, when esterified with phthalic acid, provide a mixture of isomeric di-decyl phthalates that can be used as plasticizers.