摘要:
The invention relates to a method for producing sulfonated aryl phosphines by reacting aryl phosphines with oleum. After reacting the aryl phosphines with oleum, the sulfonation mixture is firstly diluted with water and an inert gas stream is then fed through the diluted sulfonation mixture until SO2 is no longer released from the diluted sulfonation mixture. Afterwards, the sulfonation mixture is subsequently processed in a usual manner. The invention also relates to a method for producing solutions of sulfonated aryl phosphines by reacting the aryl phosphines with oleum, diluting the sulfonation mixture with water, extracting the aqueous solution using an organic solution consisting of an amine, and subsequently carrying out a reextraction using an aqueous solution having an inorganic base. According to the invention, the solution containing aqueous sulfonated aryl phosphines is adjusted to a pH value of up to 3 by adding acid, and an inert gas stream is then fed through the aqueous solution until sulfur dioxide is no longer released. The invention additionally relates to an aqueous catalyst solution containing rhodium and an aqueous solution of sulfonated aryl phosphines, treated as defined by the invention, for carrying out the hydroformylation of olefinically unsaturated compounds, and relates to the use thereof for carrying out the same.
摘要:
The invention relates to novel ionic liquids and to the production and use thereof. The novel ionic liquids are salts of sulphonated or carboxylated triesters of phosphorous acid as the anionic component and ammonium ions, which can be substituted with organic radicals, as the cationic component.
摘要:
The invention relates to the hydroformylation of olefins or of olefinically unsaturated compounds in the presence of an organic solution which serves as a catalyst and which contains at least one rhodium compound and at least one phosphine-substituted cobalticinium salt. The inventive method is characterised in that phosphine-substituted cobalticinium salts of general formula (I), wherein R is the same or varies and is hydrogen or various substituents, are used. An aqueous solution of 1, 1'-bis(diphenylphosphino)-cobalticinium nitrate and a rhodium compound is suitable as a hydroformylation catalyst in a two phase process.
摘要:
The invention relates to guanidinium phosphanes of the general formula (I), where n is an integer between 1 and 3, X represents Cl, Br, I or PF6, R?1, R2, R3, R4¿ are equal or different and represent a C¿1?-C6 alkyl group or hydrogen, and R?5¿ represents a phenyl group, and where the guanidinium substituent is in a meta- or para-position in relation to the P atom.
摘要:
The invention concerns a process for preparing aldehydes by reacting with hydrogen and carbon monoxide at a temperature of between 20 and 170 DEG C and a pressure of between 1 and 300 bar an olefinically unsaturated C3-C5 compound in the presence of an aqueous phase containing rhodium and sulphonated triarylphosphines as catalyst and between 1 and 35 wt % of a compound of formula (1), R(OCH2CH2)nOR , R standing for hydrogen, a straight-chain or branched C1-C4 alkyl group or a C1-C4 hydroxyalkyl group, R standing for hydrogen or a methyl group, and n standing for an integer from 3 to 50.
摘要:
The invention relates to a method for producing aldehydes by reacting monoolefins, conjugated and non-conjugated polyolefins, cycloolefins or derivatives of these classes of compounds with carbon monoxide and hydrogen (hydroformylation) in the presence of rhodium or rhodium compounds and a non-aqueous ionic liquid of general formula (Q+)aAa-, wherein Q+ represents a singly charged ammonium cation that is optionally substituted with organic radicals, and Aa- represents the anion of a sulphonated or carboxylated triester of phosphorous acid.