Abstract: Supported noble metal-comprising catalysts which can be obtained by a1) application of a noble metal compound, optionally in admixture with additives acting as promoters, to a support material, then drying, and a2) application of a reducing agent to a support material, then drying, wherein steps a1) and a2) are repeated simultaneously or in alternating turns, or wherein either of the compounds is applied entirely and then the other one is applied entirely, b) optionally afterwards drying of the resulting product, and c) subsequent calcination, its use, especially for oxidative dehydrogenation and a process for producing it.

Abstract: The present invention to a process for preparing 2-alkenals of the formula I in which R1 is selected from hydrogen and C1-C4-alkyl; and R2 is selected from hydrogen, C1-C12-alkyl, C2-C12-alkenyl, C4-C8-cycloalkyl and C6-C10-aryl, wherein C1-C12-alkyl and C1-C12-alkenyl may be substituted with C5-C7-cycloalkyl or C5-C7-cylcoalkenyl; comprising dehydrogenating an alkenol of the formula II, an alkenol of the formula III or a mixture thereof, wherein R1 and R2 are each as defined above, wherein the alkenol II, the alkenol III or a mixture thereof is brought into contact with a catalytic system comprising at least one ligand and a metal compound selected from ruthenium(II) compounds and iridium(I) compounds, and wherein the hydrogen formed during the dehydrogenation is removed from the reaction mixture by: v) reaction with a reoxidant selected from C3-C12-alkanones, C4-C9-cycoalkanones, benzaldehyde and mixtures thereof; and/or vi) purely physical means.

Abstract: The present invention to a process for preparing 2-alkenals of the formula I in which R1 is selected from hydrogen and C1-C4-alkyl; and R2 is selected from hydrogen, C1-C12-alkyl, C2-C12-alkenyl, C4-C8-cycloalkyl and C6-C10-aryl, wherein C1-C12-alkyl and C1-C12-alkenyl may be substituted with C5-C7-cycloalkyl or C5-C7-cylcoalkenyl; comprising dehydrogenating an alkenol of the formula II, an alkenol of the formula III or a mixture thereof, wherein R1 and R2 are each as defined above, wherein the alkenol II, the alkenol III or a mixture thereof is brought into contact with a catalytic system comprising at least one ligand and a metal compound selected from ruthenium(II) compounds and iridium(I) compounds, and wherein the hydrogen formed during the dehydrogenation is removed from the reaction mixture by: v) reaction with a reoxidant selected from C3-C12-alkanones, C4-C9-cycoalkanones, benzaldehyde and mixtures thereof; and/or vi) purely physical means.

Abstract: The present invention relates to a process for producing 4-hydroxybutyraldehyde, characterized in that allyl alcohol dissolved in polar solvents is reacted with CO and H2 in the presence of a catalytic system which is formed from a rhodium complex and a cyclobutane ligand which contains at least two trans-coordinated 1,3-dialkylphenyl-phosphinomethyl groups, with the exclusion of catalysts which contain an aliphatic, araliphatic or cycloaliphatic phosphine as ligand. In which R1 is alkyl, preferably methyl, ethyl or propyl R2 is H or an alkoxy group, R3 and R4 independently of one another, are H, CH2OR1, CH2O-aralkyl, CH2OH, CH2—[P(3,5-R1,R1-4-R2-phenyl)2] or CH2O—(CH2—CH2—O)m—H where m is a number from 1 to 1000.

Abstract: The use of a supported noble metal catalyst obtainable by applying a sparingly soluble noble metal compound to a support from solution or suspension, and subsequently treating thermally, for preparing olefinically unsaturated carbonyl compounds.

Abstract: A process for the selective production of acetaldehyde by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form acetaldehyde is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300° C.

Abstract: A process for preparing olefinically unsaturated carbonyl compounds by oxidative dehydrogenation in an oxygenous atmosphere over a supported catalyst which comprises gold and optionally further noble metals at temperatures in the range from 50 to 240° C.

Abstract: A method of production of a catalyst that has 0.05-0.25 wt. % of precious metal, preferably for the oxidative dehydrogenation of olefinically unsaturated alcohols, comprising the following steps a) producing a D.C. plasma, b) introducing the metal and support material into the plasma, c) evaporating the metal and support material or “shattering” the solid bodies of metal and support material in the plasma, and reaction of the particles, d) cooling, so that very small particles of composite material are obtained, e) applying the composite material on the catalyst support proper, the correspondingly produced catalyst and use thereof.

Abstract: A process for the selective production of acetaldehyde by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form acetaldehyde is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300° C.

Abstract: Supported noble metal-comprising catalysts which can be obtained by a) application of colloidal noble metal in the form of a colloidal solution, optionally in admixture with additives acting as promoters, to a support material, b1) drying of the resulting product at from 150 to 350° C., or b2) drying of the resulting product at from 150 to 350° C. and subsequent calcination at from 350 to 550° C. for epoxidation or oxidative dehydrogenation, a process for producing it, its use and also the use of colloidal noble metal for producing supported catalysts.

Abstract: A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.

Abstract: The use of a supported noble metal catalyst obtainable by applying a sparingly soluble noble metal compound to a support from solution or suspension, and subsequently treating thermally, for preparing olefinically unsaturated carbonyl compounds.

Abstract: Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. The reactant composition can include a multihydric alcohol compound and the product composition can include a carbonyl compound. The catalyst composition can include a metal effective to facilitate catalyst activation. Processes disclosed also include supplementing a dehydration catalyst with a promoter, and activating the supplemented catalyst in the presence of oxygen. Processes also include providing a supplemented dehydration catalyst to within a reactor, and exposing a multihydric alcohol compound to the dehydration catalyst, with the exposing forming coke within the reactor. Oxygen can be provided to the reactor to remove at least a portion of the coke.

Abstract: Disclosed are a catalyst including a hydrotalcite and, immobilized on a surface thereof, particles of at least one metal selected from the group consisting of Cu, Ag, and Au; a method for producing a carbonyl compound through dehydrogenation of an alcohol in the presence of the catalyst; and a method for producing a carbonyl compound through dehydrogenation of an alcohol in the presence of a catalyst including a hydrotalcite and, immobilized on a surface thereof, particles of a metal, in which dehydrogenation is performed in the absence of oxygen.

Abstract: Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition. The reactant composition can include a multihydric alcohol compound and the product composition can include a carbonyl compound. The catalyst composition can include a metal effective to facilitate catalyst activation. Processes disclosed also include supplementing a dehydration catalyst with a promoter, and activating the supplemented catalyst in the presence of oxygen. Processes also include providing a supplemented dehydration catalyst to within a reactor, and exposing a multihydric alcohol compound to the dehydration catalyst, with the exposing forming coke within the reactor. Oxygen can be provided to the reactor to remove at least a portion of the coke.

Abstract: Chemical production processes are provided that can include exposing a reactant composition to a catalyst composition to form a product composition.

Abstract: A process for preparing acrolein from glycerol using an acidic solid-state catalyst which comprises tungsten compounds and further promoters.

Abstract: Hydrofluoroethers of formula: T-CFX?—O—Rf—CFX-T???(II) wherein: T=CH3; X, X?, equal to or different from each other, are selected between F, CF3; T00?=F, Cl, H, C1–C3 perfluoroalkyl, CH3, CH2OH, COCl, CHO, CO2H; Rf is a perfluoroalkylene or a perfluoropolyoxyalkylene and respective preparation process by reduction with hydrogen in the presence of a platinum catalyst supported on metal fluorides of the corresponding compounds with at least one —COCl end group.

Abstract: Process for the perfluoropolyether preparation having reactive end groups —CH2NH2, —CHO, —CH2OH, by reduction of the corresponding perfluoropolyethers having —CN, —COCl, —CHO end groups by using gaseous hydrogen in the presence of a catalyst constituted by Pd, Rh, or Ru, supported on solid metal fluorides, at a temperature from 20° C. to 150° C. and under a pressure between 1 and 50 atm.

Abstract: A process is disclosed for preparing aldehydes by isomerization of the corresponding unsaturated primary alcohols using a transition metal catalyst system, in an alcoholic solvent and in the presence of an acid. An aldehyde forms by isomerizing an unsaturated primary alcohol under conditions that protect the newly formed aldehyde as a dialkylacetal in situ during the reaction. Protecting the aldehyde as an acetal allows for facile separation of the product from the catalyst as well as effectively driving the reaction toward completion.

Abstract: Raney copper which is doped with at least one metal from the group comprising iron and/or noble metals is used as a catalyst in the dehydrogenation of alcohols.

Abstract: In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex or compound of a metal of transition group VIII with at least one bidentate phosphine ligand is used as hydroformylation catalyst and at least one of the reaction steps following the hydroformylation reaction is carried out essentially in the absence of carbon monoxide and hydrogen and in the presence of at least one monodentate phosphine ligand.

Abstract: Process for the preparation of n-butyraldehyde and/or n-butanol, whereina) 1,3-Butadiene or a butadiene-containing hydrocarbon mixture is reacted with an alcohol of the formula IROH I,where R is C.sub.2 -C.sub.20 -alkyl or alkenyl which is unsubstituted or substituted by 1 or 2 C.sub.1 -C.sub.10 -alkoxy or hydroxyl groups, or is C.sub.6 -C.sub.10 -aryl, C.sub.7 -C.sub.

Abstract: A compound having the formula 3,3,3-trifluoropropanal oxime, and an improved process for forming 3,3,3-trifluoropropanal and its oxime. The process for producing 3,3,3-trifluoropropanal involves reacting an alkali or alkaline earth metal salt of an alcohol, which alcohol has the formula ROH, where R is a C.sub.1 -C.sub.4 alkyl, with CF.sub.3 CH.dbd.CHCl under conditions sufficient to yield a product mixture comprising at least one of CH.sub.3 CH.dbd.CHOR and CF.sub.3 CH.sub.2 CH(OR).sub.2 ; and then reacting the product mixture of with a C.sub.3 -C.sub.16 alkanoic acid, and heating under conditions sufficient to form 3,3,3-trifluoropropanal. The oxime is prepared by reacting hydroxylamine with 3,3,3-trifluoropropanal under conditions sufficient to produce 3,3,3-trifluoropropanal oxime.

Abstract: A propene ether is selectively oxidized to an aldehyde-masked 2-hydroxypropanal using a metal-containing oxidation catalyst.

Abstract: Disclosed is a process for the preparation of acetaldehyde by the hydrogenation of ketene in the presence of a transition metal hydrogenation catalyst.

Abstract: Catalysts, catalyst precursors, and catalytic systems are provided. The catalysts generally comprise a substrate that includes a group IB metal and a porous, microcrystalline layer that includes the metal and that is disposed on at least a portion of the substrate. The catalysts are prepared by providing a substrate that includes group IB metal, oxidizing said substrate in the presence of stainless steel to produce an oxide coating of said group IB metal, and reducing substantially all of said oxidized substrate.

Abstract: Conversion of alcohol to organic compounds which comprises contacting the alcohol with a heterogeneous catalyst composition comprising crystallineCu.sub.2-X Cr.sub.y Al.sub.6-y B.sub.4 O.sub.17 M.sub.m M'.sub.nwhere M is a divalent metal, M' is a monovalent metal, m is a number in a range from 0 to 0.8, n is a number in a range from 0 to 1.6, X is a number in a range from 0 to 10 0.8 and is equal to the sum of m and n/2, and y is a number in a range from 0.01 to 3, having a characteristic X-ray diffraction pattern.

Abstract: The preparation of 3-alkoxycarbonyl propenals and 3-dialkoxymethyl propenals of the general formulae Ia and Ib respectively: ##STR1## (R.sup.1 =C.sub.1 -C.sub.3 -alkyl group; R.sup.2 and R.sup.3 =hydrogen, methyl, or ethyl; and R.sup.4 and R.sup.5 =C.sub.1 -C.sub.4 -alkyl groups, which may be joined to form a 5-membered or 6-membered ring), is effected by reacting a corresponding alcohol of the general formula IIa or IIb ##STR2## with oxygen or an oxygen-containing gas in the gas phase in the presence of a metal from Group IB of the Periodic Table or a compound of one such metal acting as catalyst.The target products serve as intermediates for the synthesis of carotenoids.

Abstract: The invention relates to a catalytic dehydrogenation of alcohols to produce ketones and/or aldehydes. The catalyst comprises a dehydrogenation metal and a non-acidic microporous crystalline material as a support. The support may contain indium, tin, thallium or lead, when the dehydrogenation metal is a Group VIII metal.

Abstract: The preparation of 2,3-dialkoxypropanals of the general formula I ##STR1## in which R.sup.1 and R.sup.2 denote C.sub.1 -C.sub.8 -alkyl or C.sub.5 - or C.sub.6 -cycloalkyl which may or may not bear substituents which are inert under the conditions of the reaction, wherein a 1,2-dialkoxy ethene of the general formula IIR.sup.1 O--HC.dbd.CH--OR.sup.2 (II)is reacted with carbon monoxide and hydrogen in the presence of a rhodium-containing catalyst.

Abstract: A novel process for converting myrcene to citral using palladium (II) chloride in the presence of an inert aqueous alkylamide solvent and a metal oxoanionic salt at a temperature of at least about 80.degree. C. is disclosed. A novel process for converting a palladium-myrcene complex to citral using a metal oxoanionic salt in the presence of an inert aqueous organic solvent is also disclosed.

Abstract: Citral is prepared from prenol and prenal by condensation to form an acetal followed by cracking, both operations being effected in the presence of a lithium halide (e.g. lithium chloride) as catalyst.

Abstract: A complex of a tetradentate tetraanionic ligand L of the formula: ##STR1## and a metal, preferably a transition metal, is described where Z is an anionic oxidation reistant metal complexing group, Ch is an oxidation resistant chelate group containing 1 to 4 chain atoms and Y is hydrogen. The chelate and ring Z-Ch-M-Z functional groups Z, such as N or O, are resistant to oxidation and the ring contains 4 to 7 preferably 5 to 6 chain atoms. An osmium complex containing two pyridine ligands is an oxidation catalyst. Further activation by anodic oxidation and heating to a temperature exceeding 30.degree. C. greatly increases catalytic activity.

Abstract: The invention relates to a process of producing a carbonyl compound by dehydrogenating a linear aliphatic alcohol of 1 to 6 carbon atoms in the gas phase in the presence of a solid catalyst comprising a ruthenium catalyst supported on a carrier such as zinc oxide or magnesium oxide.

Abstract: A process for producing acetaldehyde from ethylene under mild reaction conditions, selectively and with high yield is provided, which process comprises preparing a composite catalyst comprising a complex of a transition metal capable of forming an oxygen complex by coordination of oxygen molecule with the metal ion of the transition metal, and a complex of a transition metal capable of forming an ethylene complex by coordination of ethylene with the metal ion of the transition metal, and oxidizing ethylene activated by forming the ethylene complex with the combined oxygen in the oxygen complex, activated by forming the oxygen complex.

Abstract: A process for the production of an aldehyde at high selectivity and rate by the reaction of an inorganic or organic ester with carbon monoxide or synthesis gas in contact with a catalyst system containing cobalt, rhodium or ruthenium atoms and lithium iodide and, optionally, an organic ligand.

Abstract: A process for the production of an aldehyde at high selectivity and rate by the reaction of an organic ester with carbon monoxide or synthesis gas in contact with a catalyst system containing rhodium atoms and cobalt atoms and lithium iodide or lithium bromide and, optionally, an organic ligand.

Abstract: .beta.-hydroxy-.alpha.-aminocarboxylic acids of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen or an alkyl group having 1 to 10 carbon atoms are produced by hydrogenating the correspondingly substituted cyanohydrin in a water containing medium first in the presence of a hydrogenation catalyst and an acid at a temperature between -10.degree. and +40.degree. C. and a hydrogen pressure of less than 10 bar, until per mole of cyanohydrogen employed one mole of hydrogen is taken up and then employing the solution obtained as starting material for a Strecker or Bucherer synthesis of an amino acid.

Abstract: Acetaldehyde is prepared in good yield from methanol and synthesis gas by contacting the mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine-free catalyst composition comprising ruthenium powder, a cobalt-containing compound and an onium salt or base, and heating the resulting mixture to an elevated temperature and pressure for sufficient time to produce the acetaldehyde, and then recovering the same from the reaction mixture.

Abstract: Acetaldehyde is prepared from methanol and synthesis gas with good selectivity and yield by contacting a mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine free catalyst composition comprising (1) ruthenium powder, (2) a cobalt-containing compound, (3) an amine, and (4) an onium salt or base, and heating the resulting mixture to an elevated temperature and pressure for sufficient time to produce the desired acetaldehyde, and recovering the same from the reaction mixture.

Abstract: Acetaldehyde is prepared in good yield from methanol and synthesis gas under mild reaction conditions by contacting a mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine free catalyst composition comprising (1) ruthenium powder, (2) a cobalt-containing compound (3) a rhodium-containing compound, and (4) an onium salt or base, and heating the resulting mixture under mild temperature and pressure for sufficient time to produce the desired acetaldehyde, and then recovering the same from the reaction mixture.

Abstract: New catalysts comprising lead and silver on supports having relatively low surface areas and their use have been found to be useful in the oxidative dehydrogenation of methanol to formaldehyde at elevated temperatures.

Abstract: Improved process for the production of acetaldehyde and ethanol by reacting methanol with carbon monoxide and hydrogen in the presence of a catalyst system containing cobalt, elemental iodine or bromine as promotor and a polydentate phosphorus, arsenic, antimony or bismuth compound using one or more metals from the group comprising chromium, molybdenum, tungsten, uranium, titanium, vanadium, iron and nickel as co-catalyst.

Abstract: Acetaldehyde is produced by reacting acetic anhydride with hydrogen in the presence of a supported Group VIII noble metal catalyst wherein the reaction is carried out in the liquid phase.

Abstract: A process for producing acetaldehyde is disclosed, which comprises reacting acetic anhydride with hydrogen in gaseous phase in the presence of a supported catalyst comprising a palladium, a platinum or a rhodium component.

Abstract: A process as described for preparing hydroxycitronellal by isomerizing certain 7-hydroxygeranylamine compound or 7-hydroxynerylamine compounds using a catalyst comprising a divalent palladium compound and a phosphine compound.

Abstract: Ethanol and/or acetaldehyde are produced by reacting at elevated temperature and pressure methanol with synthesis gas in the presence of a catalyst comprising a metal complex in which the metal is a metal of Group VIII of the Periodic Table other than iron, palladium and platinum and the ligand is derived from cyclopentadiene or a substituted cyclopentadiene and a promoter which is an iodide or a bromide. Optionally there is also added as a co-promoter a compound of formula X(A) (B) (C) wherein X is nitrogen, phosphorus, arsenic, antimony or bismuth and A, B and C are individually C.sub.1 to C.sub.20 monovalent hydrocarbyl groups which are free from aliphatic carbon-carbon unsaturation and are bound to the X atom by a carbon/X bond, or X is phosphorus, arsenic, antimony or bismuth and any two of A, B and C together form an organic divalent cyclic ring system bonded to the X atom, or X is nitrogen and all of A, B and C together form an organic trivalent cyclic ring system bonded to the X atom, e.g.

Abstract: The present invention relates to a process for the conversion of tertiary-butyl-containing compounds to methacrylic derivatives, and more particularly to a process for the conversion of tertiary-butyl-containing compounds selected from the group consisting of alkyl tertiary-butyl ethers, tertiary-butyl alcohol, isobutylene dimer (2,2,4-trimethylpentene) and isobutylene trimer, to methacrolein, methacrylic acid or methacrylonitrile.

Abstract: The invention relates to the production of oxygenated organic compounds comprising alcohols, aldehydes, ethers and salts of carboxylic acids. Prior art processes for the production of ethanol in particular involve the use of elevated temperatures and pressures. Milder conditions can be used in the process of the invention in which either a mercury compound of formula (R.sup.1 OCHR.sup.2 CHR.sup.3 Hg).sub.n X (I), wherein X is an organic or inorganic anion, n is an integer equal to the valency of the anion, R.sup.2 and R.sup.3 are independently a hydrogen atom or an alkyl group and R.sup.1 is a hydrogen atom, an alkyl group or the group --(--CHR.sup.2 CHR.sup.3 Hg).sub.n X, or the precursors of the compound (I), with a catalyst comprising a complex containing a metal of Group VIII, particularly rhodium, in the presence of a liquid reagent containing an active acidic hydrogen atom. A particularly suitable rhodium complex is one having the formula:[Rh(C.sub.5 Me.sub.5).sub.2 (OH).sub.3 ]Cl.xH.sub.