Class / Patent application number | Description | Number of patent applications / Date published |
568862000 | Of aldehyde or ketone | 24 |
20080207958 | Method For Production Of 1,6-Hexanediol With A Purity In Excess of 99.5% - The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by
| 08-28-2008 |
20090005611 | METHOD OF HYDROGENATING ALDEHYDES AND KETONES - Methods and systems for the hydrogenation of aldehydes and/or ketones are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and solubility of the hydrogen-containing gas (e.g. H | 01-01-2009 |
20090012333 | Process of Preparing Glycolaldehyde - The invention provides a process of preparing glycolaldehyde by reacting formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition which is based on, a) a source of rhodium, and b) a ligand of general formula R | 01-08-2009 |
20100016643 | PROCESS FOR PREPARING 1,4-BUTANEDIOL - The present invention provides an integrated process for continuously preparing 1,4-butanediol, which comprises the following stages: | 01-21-2010 |
20110004030 | PROCESS FOR THE PRODUCTION OF 1,2-PROPANEDIOL - A process for the removal of hydroxypropane from a crude product stream from the hydrogenation of glycerol, the crude product stream comprising 1,2-propanediol and hydroxypropanone as impurity, the process comprising: (a) where required condensing the crude product stream; and (b) contacting the crude product phase in the liquid phase with a stream of a hydrogen-containing gas in the presence of a heterogeneous catalyst at suitable temperatures and pressures such that hydroxypropanone present in the crude product stream is converted to the desired propanediol. | 01-06-2011 |
20110040132 | Method Of Producing Lower Alcohols From Glycerol - A reactive-separation process converts glycerin into lower alcohols, having boiling points less than 200° C., at high yields. Conversion of natural glycerin to propylene glycol through an acetol intermediate is achieved at temperatures from 150° to 250° C. at a pressure ranging from 1 and 25 bar. The preferred applications of the propylene glycol are as an antifreeze, deicing compound, or anti-icing compound. The preferred catalyst for this process in a copper-chromium powder. | 02-17-2011 |
20110282106 | PROCESS FOR PREPARING NEOPENTYL GLYCOL - The present invention relates to a process for preparing neopentyl glycol (NPG) by continuously hydrogenating hydroxypivalaldehyde (HPA) with hydrogen, in the liquid phase, in the presence of a hydrogenation catalyst, in a hydrogenation reactor ( | 11-17-2011 |
20110295044 | Production of propyleneglycol from glycerine - The present invention describes a process for the production of propylene glycol from glycerol, the transformation of purified glycerol to propylene glycol being carried out by means of a reaction of hydrogenolysis, in the liquid phase, where the two stages of the reaction take place simultaneously and in one and the same reactor ( | 12-01-2011 |
20120022298 | METHOD FOR PRODUCING 1,6-HEXANEDIOL - The invention relates to a process for preparing 1,6-hexanediol, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol. | 01-26-2012 |
20120330070 | Method Of Producing Lower Alcohols From Glycerol - This invention relates generally to a process for value-added processing of fats and oils to yield glycerol and glycerol derivatives. More particularly, the process converts glycerol to acetol and then acetol to propylene glycol to produce a propylene glycol with ultra-low amounts of ethylene glycol. The propylene glycol thus produced may be used as an antifreeze, deicing compound, or anti-icing compound. | 12-27-2012 |
20130172629 | PROCESS FOR PREPARING 1, 6-HEXANEDIOL - Disclosed are processes for preparing 1,6-hexanediol from levoglucosenone. In one embodiment, the process comprises contacting levoglucosenone with hydrogen in the presence of a hydrogenation catalyst comprising palladium, platinum/tungsten, nickel/tungsten, rhodium/rhenium, or mixtures thereof at a first temperature between about 50° C. and 100° C. and at a first reaction pressure between about 50 psi and 2000 psi for a first reaction period, and at a second temperature between about 120° C. and 250° C. and at a second pressure between about 500 psi and 2000 psi for a second reaction period to form a product mixture comprising 1,6-hexanediol, wherein the first reaction period is the amount of time in which the levoglucosenone has a conversion of at least about 95%. | 07-04-2013 |
20130245330 | Catalytic Conversion of Glycerol or Acetol to Alcohols - The catalytic conversion of glycerol or acetol to alcohols, such as polyhydric alcohols like propylene glycol and simple alcohols like methanol and ethanol, without the addition of external hydrogen, is improved by the use of a transition metal alloy catalyst which, in the case of glycerol, is a nickel alloy catalyst. | 09-19-2013 |
20130338405 | METHOD FOR PRODUCING GLYCOL FROM POLYHYDRIC ALCOHOL - An object of the invention is to provide a production method that can produce glycol from polyhydric alcohol with high selectivity and in a satisfactory yield. The object is achieved by using a silver catalyst in a reaction for synthesizing hydroxyketone from polyhydric alcohol having adjacent hydroxyl groups, and a hydrogenation catalyst in a reaction for synthesizing glycol from hydroxyketone. | 12-19-2013 |
20160030928 | METHOD FOR PREPARING HYDROGENATION CATALYST AND METHOD FOR PREPARING DIOLS FROM LACTONES USING THE HYDROGENATION CATALYST - A method for preparing a hydrogenation catalyst by mixing a copper salt with colloidal silica to form a precipitate, washing the formed precipitate to remove anions of the copper salt from the precipitate, and impregnating the anion-removed precipitate with an alkali metal to form a hydrogenation catalyst; and a method for preparing a diol from a lactone using the hydrogenation catalyst. | 02-04-2016 |
568863000 | Of polyhydroxy aldehyde or polyhydroxy ketone (e.g., of carbohydrate, glyceraldehyde, etc.) | 10 |
20090054702 | HYDROGENATION PROCESS - The present invention provides a process for hydrogenating an aldehyde. In one aspect, the invention is directed to a process of hydrogenating an aldehyde with a catalyst comprising a Group VIII metal, where the catalyst is complexed with carbon monoxide, at a temperature of at least 120° C. In another aspect, the invention is directed to a process of hydrogenating an aldehyde by contacting a feed comprising the aldehyde with a Group VIII metal catalyst and hydrogen in the presence of carbon monoxide at a temperature of at most 90° C. and subsequently contacting the feed and catalyst with hydrogen at a temperature of at least 120° C. | 02-26-2009 |
20110319672 | Conversion Of Sugar, Sugar Alcohol, Or Glycerol To Valuable Chemicals Using A Promoted Zirconium Oxide Supported Catalyst - A process for converting a sugar, sugar alcohol, or glycerol to a valuable chemical is described. The process may use a support comprising zirconium oxide promoted by a polyacid or promoter material. A catalytically active metal may be impregnated on the polyacid-promoted zirconium oxide support and the catalyst may then be introduced the sugar, sugar alcohol, or glycerol a source of hydrogen under reaction conditions. At least 40 wt % of the sugar, sugar alcohol or glycerol may be converted to a polyol and/or a shorter carbon-chain alcohol that may include at least one of propylene glycol, ethylene glycol, glycerin, methanol, ethanol, propanol and butandiols. Specific processes for converting glycerin having a selectivity for propylene glycol and for converting sorbitol with a selectivity for propylene glycol, ethylene glycol, and/or glycerin are also described. | 12-29-2011 |
20120190899 | HYDROGENATION CATALYST COMPRISING NICKEL ON CARBON - The hydrogenation catalyst comprises from 1 to 50% by weight, based on the total catalyst, of nickel on a carbon support, wherein the hydrogenation catalyst does not comprise any rhenium. Coconut shell carbon is preferably used as support. | 07-26-2012 |
20130165698 | CO-PRODUCTION OF BIOFUELS AND GLYCOLS - Methods and systems for co-producing higher hydrocarbons and glycols from bio-based feedstocks containing carbohydrates are disclosed. | 06-27-2013 |
20150057470 | METHOD FOR SYNTHESIZING A SUGAR ALCOHOL - A method for synthesizing a sugar alcohol comprising the step of hydrolyzing a polysaccharide in the presence of hydrogen ions (H | 02-26-2015 |
20150307424 | PROCESS FOR THE PRODUCTION AND SEPARATION OF MANNITOL AND SORBITOL FROM A MIXTURE WHICH WAS OBTAINED BY HYDROGENATION OF A PRECURSOR - An improved method for the processing of substrates containing a starting material (precursor) of mannitol, wherein all of the fractions obtained can be recovered, thus eliminating waste. | 10-29-2015 |
20150314274 | METAL OXIDE-STABILIZED ZIRCONIUM OXIDE CERAMIC MATERIALS - The present disclosure relates generally to ceramic materials suitable for use as catalyst support materials, catalysts using such materials and methods for using them, such as methods for converting sugars, sugar alcohols, glycerol, and bio-renewable organic acids to commercially-valuable chemicals and intermediates. One aspect of the invention is a ceramic material including zirconium oxide and one or more metal oxides selected from nickel oxide, copper oxide, cobalt oxide, iron oxide and zinc oxide, the ceramic material being at least about 50 wt. % zirconium oxide. In certain embodiments, the ceramic material is substantially free of any binder or additional stabilizing agent. | 11-05-2015 |
20150329449 | PROCESS FOR THE CONTINUOUS PRODUCTION OF ETHYLENE GLYCOL FROM CARBOHYDRATES - A continuous process for converting carbohydrates to ethylene and propylene glycol. The carbohydrates are mixed with water and passed through a reactor at a temperature that hydrolyzes the carbohydrate mixture at least partially to monosaccharides. The reactor has a first zone comprising a retro-aldol catalyst and a second zone comprising a reducing catalyst. The aldose is converted in the first zone into glycolaldehyde by the retro-aldol catalyst and the glycolaldehyde, in the presence of hydrogen, is converted to ethylene glycol in the second zone of the reactor. The reaction products are removed from the reactor and the ethylene glycol is recovered. The selectivity to propylene glycol can be enhanced via feeding ketose as the carbohydrate. | 11-19-2015 |
20150329787 | CO-PRODUCTION OF BIOFUELS AND GLYCOLS - Methods and systems for co-producing higher hydrocarbons and glycols from bio-based feedstocks containing carbohydrates are disclosed. | 11-19-2015 |
20150360219 | REGENERATION OF CATALYST FOR HYDROGENATION OF SUGARS - A process for regenerating catalysts that have been deactivated or poisoned during hydrogenation of biomass, sugars and polysaccharides is described, in which polymerized species that have agglomerated to catalyst surfaces can be removed by means of washing the catalyst with hot water at subcritical temperatures. A feature of the process can regenerate the catalysts in situ, which allows the process to be adapted for used in continuous throughput reactor systems. Also described is a continuous hydrogenation process that incorporated the present regeneration process. | 12-17-2015 |