Abstract:
Ruthenium-based triazole carbene complexes The present invention relates to novel ruthenium-based triazole carbene complexes comprising specific ligands, their preparation and their use as catalysts in hydrogenation processes. Such complex catalysts are inexpensive, thermally robust, gel formation inhibiting and olefin selective.
Abstract:
The present application discloses novel amino-sulfide metal catalysts for organic chemical syntheses including hydrogenation (reduction) of unsaturated compounds or dehydrogenation of substrates. The range of hydrogenation substrate compounds includes esters, lactones, oils and fats, resulting in alcohols, diols, and triols as reaction products. The catalysts of current application can be used to catalyze a hydrogenation reaction under solvent free conditions. The present catalysts also allow the hydrogenation to proceed without added base, and it can be used in place of the conventional reduction methods employing hydrides of the main-group elements. Furthermore, the catalysts of the present application can catalyze a dehydrogenation reaction under homogenous and/or acceptorless conditions. As such, the catalysts provided herein can be useful in substantially reducing cost and improving the environmental profile of manufacturing processes for a variety of chemicals.
Abstract:
A hydrodeoxygenation process for producing a linear alkane from a feedstock comprising a saturated or unsaturated C 10-18 oxygenate that comprises an ester group, carboxylic acid group, carbonyl group and/or alcohol group is disclosed. This process comprises contacting the feedstock with (i) a catalyst comprising about 0.1 % to about 10% by weight of a metal selected from Group IB, VIB, or VIII of the Periodic Table, and (ii) a heteropolyacid or heteropolyacid salt, at a temperature between about 150 °C to about 250 °C and a hydrogen gas pressure of at least about 300 psig. By contacting the feedstock with the catalyst and heteropolyacid or heteropolyacid salt under these temperature and pressure conditions, the C 10-18 oxygenate is hydrodeoxygenated to a linear alkane that has the same carbon chain length as the C 10-18 oxygenate.
Abstract:
Ruthenium-based triazole carbene complexes The present invention relates to novel ruthenium-based triazole carbene complexes comprising specific ligands, their preparation and their use as catalysts in hydrogenation processes. Such complex catalysts are inexpensive, thermally robust, gel formation inhibiting and olefin selective.
Abstract:
The present application discloses novel amino-sulfide metal catalysts for organic chemical syntheses including hydrogenation (reduction) of unsaturated compounds or dehydrogenation of substrates. The range of hydrogenation substrate compounds includes esters, lactones, oils and fats, resulting in alcohols, diols, and triols as reaction products. The catalysts of current application can be used to catalyze a hydrogenation reaction under solvent free conditions. The present catalysts also allow the hydrogenation to proceed without added base, and it can be used in place of the conventional reduction methods employing hydrides of the main-group elements. Furthermore, the catalysts of the present application can catalyze a dehydrogenation reaction under homogenous and/or acceptorless conditions. As such, the catalysts provided herein can be useful in substantially reducing cost and improving the environmental profile of manufacturing processes for a variety of chemicals.
Abstract:
A process to increase the capacity of the adsorbent in a normal paraffin adsorption separation system is presented. A tertiary flush stream is used to improve the capacity of the simulated moving bed system by flushing residual raffinate from the feed transfer line. The flushing removes residual raffinate containing desorbent that competes with the adsorption of normal paraffins from the feedstream. The flush stream is a material that will displace fluid in the column, but will not enter the pores of the adsorbent.
Abstract:
The invention relates to hydrocarbon mixtures containing linear C11 and linear C13 hydrocarbons, wherein the sum of the linear C11 and linear C13 hydrocarbons is greater than or equal to 60 wt. % with relation to the sum of the hydrocarbons and the use of said mixtures in cosmetic and/or pharmaceutical preparations.
Abstract:
A composition of matter comprising a compound having the general formula:
[CpM(Ar F )Y] p
wherein Cp is a substituted or unsubstituted cyclopentadienyl ligand or cyclopentadienyl-type bulky ligand characterized by one or more open, acylic or fused ring systems comprised of atoms selected from Groups 13-16 of the Periodic Table of Elements and wherein the ligands can include a heteroatom; M is a metal selected from Groups 3-9 of the Periodic Table of Elements; Ar F is a fluorinated aryl group; Y is a hydrocarbyl group that can contain a heteroatom; and p is 1 or 2. The invention also contemplates a method of producing the compound and its use in the oligomerization and polymerization of alpha olefins.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung von Halogen-Magnesium-Alanaten XMgAIH 4 (X = Cl, Br, l) aus Aluminiumhalogenid und Magnesiumhydrid, das dadurch gekennzeichnet ist, daß Aluminiumhalogenid AlX 3 (X = Cl, Br, 1) mit einem Magnesiumhydrid in einem Lösungsmittel umgesetzt wird, wobei dieses Magnesiumhydrid hergestellt ist aus Magnesium und Wasserstoff in einem Lösungsmittel in Gegenwart homogener Katalysatoren, bestehend aus einem Halogenid eines Metalls der IV. bis VIII. Nebengruppe des periodischen Systems und einer magnesiumorganischen Verbindung bzw. eines Magnesiumhydrids sowie in Gegenwart eines polycyclischen Aromaten oder eines tertiären Amins sowie gegebenenfalls in Anwesenheit eines Magnesiumhalogenids MgX 2 (X = Cl, Br, l) sowie die Verwendung der so gebildeten Halogen-Magnesium-Alanate.