Abstract:
Kontinuierliches Verfahren zur Epoxidation von Olefinen mit Hydroperoxid, dadurch gekennzeichnet, dass die Epoxidation in einem Reaktor durchgeführt wird, der mindestens einen in einer Flüssigphase suspendierten Katalysator enthält, wobei die Flüssigphase durch eine im Reaktor eingebaute Vorrichtung mit Öffnungen oder Kanälen geführt wird, und der Katalysator bei der Abtrennung der Epoxid-haltigen Flüssigkeit mittels einer Querstromfiltration im Reaktionssystem zurückgehalten wird.
Abstract:
Aliphatic alpha,omega-aminonitriles are prepared by partially hydrogenating aliphatic alpha,omega-dinitriles at an increased temperature and pressure in the presence of a solvent and a catalyst. The catalyst contains (a) a compound based on a metal selected from the group made up of nickel, cobalt, iron, ruthenium and rhodium; (b) 0.01 to 25 % by weight in relation to (a) of a promoter based on a metal selected from the group comprising of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminium, tin, phosphorus, arsenic, antimony, bismuth, silicium, titanium, zirconium and rare earth metals; and (c) 0 to 5 % by weight in relation to (a) of a compound based on an alkaline or alkaline-earth metal, provided that component (a) not be based on iron or iron and a metal selected from the group comprising cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group comprising titanium, manganese, chromium and molybdenum. Moreover, when component (a) is a compound based only on ruthenium or on rhodium, ruthenium and rhodium, or nickel and rhodium, promoter (b) may be dispensed with.
Abstract:
The invention concerns a catalyst composition which is free from noble metals and is obtained by: a) preparing an aqueous mixture which comprises: i) a salt of at least one base metal selected from elements having the atomic numbers 21 to 32, 39 to 42, 48 to 51, 57 to 75 and 81 to 83; ii) phosphate ions; and iii) at least one nitrogen source; and b) concentrating the aqueous mixture produced and drying the resultant catalyst compound. The invention further concerns the preparation of this composition and its use in the production of hydrogen peroxide and the epoxidation of olefins.
Abstract:
The invention concerns a grid catalyst based on titanium zeolite or vanadium zeolite and on inert reticulated fabrics suitable for use in the catalysis of oxidation reactions such as the epoxidation of olefins, the production of hydrogen peroxide or the synthesis of hydroxylamine.
Abstract:
The invention concerns a titanium or vanadium silicalite-based oxidation catalyst having a zeolite structure and containing between 0.01 and 20 wt % of one or a plurality of platinum metals from the group comprising ruthenium, rhodium, palladium, osmium, iridium and platinum. The invention is characterized in that the platinum metals are each present in at least two different bond energy states and preferably do not contain any metal-to-metal bonds.
Abstract:
The present invention relates to a method for producing dialkylamides of the alkali metals by reacting the corresponding dialkylamine with the corresponding alkali metal in the presence of an electron donor substance of the group 1,3-butadiene, isoprene, naphthalene and/or styrene with the formation of low quantities of butenyl dialkylamine. According to said method, the corresponding alkali metal is introduced and suspended in a solvent and the dialkylamine and the electron donor substance are added, such that the dialkylamine is present in an amount up to 45 wt. %, preferably up to 25 wt. %, in particular up to 15 wt. % and the butadiene is present in an amount up to 5 wt. %, preferably up to 3 wt. %, in particular up to 1.5 wt. %.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Dialkylamiden der Alkalimetalle durch Umsetzung des entsprechenden Dialkylamins mit dem entsprechenden Alkalimetall in Gegenwart einer elektronenliefernden Substanz aus der Gruppe 1,3 Butadien, Isopren, Naphthalin und/oder Styrol unter Bildung geringer Mengen an Butenyldialkylamin, bei dem das entsprechende Alkalimetall in einem Lösungsmittel suspendiert und vorgelegt wird und anschliessend Dialkylamin und elektronenliefernde Substanz so zugegeben werden, dass das Dialkylamin in einer Menge bis 45 Gew.-%, vorzugsweise bis 25 Gew.-%, insbesondere bis 15 Gew.-%, und das Butadien in einer Menge bis 5 Gew.-%, vorzugsweise bis 3 Gew.-%, insbesondere bis 1,5 Gew.-%, vorliegt.
Abstract:
The invention relates to the production of organic nitrogen compounds, especially aminoalkanes, alkyloximes, alkylnitrons or mixtures thereof having only one nitrogen-functional grouping and no alcoholic hydroxyl groups in the molecule, from nitro group-containing reaction products of polymers of C2 to C6 olefines with a mean degree of polymerisation P = 5 to 100 with nitrogen oxides, mixtures of nitrogen oxides and oxygen by the hydration of said reaction products. The invention also relates to certain mixtures of such aminoalkanes, alkyloximes and/or alkylnitrons and such individual compounds themselves. The products specified are suitable as fuel and lubricant additives.
Abstract translation:本发明涉及的有机氮化合物的制备,尤其是氨基烷烃,alkyloximes,alkylnitrones或它们的混合物,其仅支持一个氮官能团和分子中不含醇羟基,从硝基,1至C 6烯烃具有的平均聚合度C2的聚合物的反应产物的含 P =与氮氧化物或氮的氧化物和氧气的混合物通过这些反应产物的氢化5至100。 本发明进一步提供了这样的氨基烷烃,alkyloximes和/或alkylnitrones和这种单独化合物本身的某些混合物。所描述的产品适合作为燃料和润滑油添加剂。
Abstract:
A process for producing aldehydes by the hydroformylation of olefins with more than 3 carbon atoms, comprising the hydroformylation stage by means of a rhodium catalyst uniformly dissolved in the reaction medium, the separation of the rhodium catalyst from the product from the hydroformylation reaction and its return to the hydroformylation stage, in which the rhodium catalyst is extracted into the aqueous phase by means of an aqueous solution of a nitrogen-containing complexing agent from the group of sulphonated pyridines, sulphonated quinolines, possibly substituted sulphonated or sulphonated component-containing 2,2' bipyridines, 1,10 phenanthrolines, 1,1' biquinolines, 2,2', 6', 2'' terpyridines and porphines, and/or from the group of carboxylated pyridines, carboxylated quinolines, possibly substituted, carboxylated or carboxylated substance-containing 2,2' bipyridines, 1,10 phenanthrolines, 2,2' biquinolines, 2,2', 6', 2'' terpyridines and porphines, and the alcohol and/or aldehyde is isolated and from the extracted hydroformylation product, the aqueous rodhium-containing extract is taken to a pre-carbonylation stage and subjected to a pre-carbonylation in said stage in the presence of a substantially water-soluble organic fluid and in the presence of carbon monoxide, synthesis gas or a carbon monoxide-containing gas mixture at a pressure of 50 to 100 bars and a temperature of 50 to 180 DEG C, the product from the pre-carbonylation stage is separated into an organic part containing the majority of the rhodium and an aqueous phase containing the complexing agents and the organic phase for the hydroformylation of the olefin is taken to the hydroformylation stage at 50 to 100 bars and a temperature of 50 to 180 DEG C.