Class / Patent application number | Description | Number of patent applications / Date published |
568342000 | Carbon monoxide or peroxy containing reactant | 23 |
20090018367 | Process for Preparing Cyclohexanone and Cyclohexanol - The present invention relates to a process for preparing cyclohexanone and cyclohexanol, said process comprising (a) neutralising acids and/or carbon dioxide present in an organic solution further comprising cyclohexylhydroperoxide by mixing the organic solution with a first aqueous base solution at a temperature of from 50 to 80° C. to form a first mixture comprising a first aqueous phase with a pH of from 8.5 to 13 and a first organic phase, (b) separating first aqueous phase from the first mixture resulting in a remaining mixture comprising first organic phase, (c) decomposing cyclohexylhydroperoxide present in said remaining mixture by mixing said remaining mixture with a second aqueous base solution at a temperature of from 60 to 110° C. to form a second mixture comprising a second aqueous phase and a second organic phase comprising cyclohexanone and cyclohexanol, (d) separating the second aqueous phase from the second organic phase at a temperature higher than 80° C. | 01-15-2009 |
20090054692 | Process for Preparing Cyclohexanone and Cyclohexanol - Process for preparing cyclohexanone and cyclohexanol, said process comprising (a) neutralising acids and/or carbon dioxide present in an organic solution further comprising cyclohexylhydroperoxide by mixing the organic solution with a first aqueous base solution to form a first mixture comprising a first aqueous phase and a first organic phase, (b) separating first aqueous phase from first organic phase, (c) discharging first aqueous phase, (d) decomposing cyclohexylhydroperoxide present in said first organic phase by mixing said first organic phase with a second aqueous base solution to form a second mixture comprising a second aqueous phase and a second organic phase comprising cyclohexanone and cyclohexanol, (e) separating the second aqueous phase from the second organic phase, (f) feeding at least a portion of said separated second aqueous phase to said neutralising (a), wherein the process further comprises feeding such a portion of the first aqueous phase to the decomposing that the pH of the first aqueous phase is higher then 8.5, measured at 25° C. | 02-26-2009 |
20100137645 | Process for Decomposing Cyclohexylhydroperoxide - The present invention relates to a process for decomposing cyclohexylhydroperoxide into cyclohexanone, said process comprising mixing an organic feed solution comprising cyclohexylhydroperoxide with an aqueous base solution in the absence of a transition metal catalyst resulting in a mixture comprising (i) an aqueous phase and (ii) an organic phase comprising cyclohexanone and cyclohexanol. | 06-03-2010 |
20100197971 | Process For Producing Cyclohexylbenzene - In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The ratio of the total number of moles of hydrogen fed to said at least one reaction zone to the number of moles of benzene fed to said at least one reaction zone is between 0.4 and 0.9:1. | 08-05-2010 |
20110028762 | Process for Producing Cyclohexylbenzene - In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The catalyst system has an acid-to-metal molar ratio of from about 75 to about 750. | 02-03-2011 |
20120157718 | PROCESS FOR THE PREPARATION OF PHENOL AND CYCLOHEXANONE - Process for the preparation of phenol and cyclohexanone which comprises:
| 06-21-2012 |
20120178969 | Process For Producing Cyclohexylbenzene - In a process for producing cyclohexylbenzene, benzene and hydrogen are contacted under hydroalkylation conditions with a catalyst system comprising a MCM-22 family molecular sieve and at least one hydrogenation metal. The conditions comprise a temperature of about 140° C. to about 175° C., a pressure of about 135 psig to about 175 psig (931 kPag to 1207 kPag), a hydrogen to benzene molar ratio of about 0.30 to about 0.65 and a weight hourly space velocity of benzene of about 0.26 to about 1.05 hr | 07-12-2012 |
20120310012 | METHOD FOR PREPARING A DEPEROXIDATION CATALYST - A process for preparing a deperoxidation catalyst comprising chromium as the main catalytic element is described. Also described, is a process for preparing an organic solution of a chromic acid ester. The solution can be used as a catalyst in a deperoxidation of an alkyl peroxide in a process for manufacturing cyclohexanol/cyclohexanone by oxidation of cyclohexane. | 12-06-2012 |
20130204045 | "CYCLOHEXANONE COMPOSITIONS" - Described herein are compositions having (a) at least 99 wt % cyclohexanone; and (b) 0.1 wppm to 1000 wppm of at least one of cyclohexanedione and hydroxycyclohexanone. The wt % and wppm are based upon the total weight of the composition. The compositions may further comprise 0.1 wppm to 1000 wppm of cyclohexanol. | 08-08-2013 |
20130217921 | "PROCESSES FOR PRODUCING PHENOL" - In a process for producing phenol and cyclohexanone, a feed comprising cyclohexylbenzene is oxidized to produce an oxidation reaction product comprising cyclohexyl-1-phenyl-1-hydroperoxide. At least a portion of the oxidation reaction product is then cleaved to produce a cleavage reaction product comprising phenol, cyclohexanone, and at least one contaminant. At least a portion of the cleavage reaction product is contacted with an acidic material to convert at least a portion of the at least one contaminant to a converted contaminant and thereby produce a modified reaction product. | 08-22-2013 |
20130225866 | Processes for Producing Phenol - Disclosed herein are processes for producing phenol. The processes include oxidizing cyclohexylbenzene to produce an oxidation composition comprising cyclohexyl-1-phenyl-1-hydroperoxide. The cyclohexyl-1-phenyl-1-hydroperoxide in the oxidation composition may undergo a cleavage reaction to produce a cleavage reaction mixture comprising phenol, cyclohexanone and at least one contaminant. The cleavage reaction mixture may be contacted with a basic material to convert at least a portion of the contaminant to a converted contaminant, thereby producing a modified reaction mixture. | 08-29-2013 |
20150065753 | Process for Producing Phenol and Cyclohexanone - In a process for separating a mixture comprising cyclohexanone and phenol, at least a portion of the mixture is distilled in the presence of a solvent including at least two alcoholic hydroxyl groups attached to non-adjacent saturated carbon atoms and at least one hemiketal defined by the formula (I) or the formula (II): | 03-05-2015 |
20150065754 | Hydrogenation Process - The present invention relates to hydrogenation processes including: contacting a first composition with hydrogen under hydrogenation conditions, in the presence of an eggshell hydrogenation catalyst, wherein the first composition has: (i) greater than about 50 wt % of cyclohexylbenzene, the wt % based upon the total weight of the first composition; and (ii) greater than about 0.3 wt % of cyclohexenylbenzene, the wt % based upon the total weight of the first composition; and thereby obtaining a second composition having less cyclohexenylbenzene than the first composition. Other hydrogenation processes are also described. | 03-05-2015 |
20150105589 | Process for preparing cyclohexanol and cycohexanone from cyclohexane - A process for preparing cyclohexanol and cyclohexanone from cyclohexane includes steps of: (1) non-catalyticly oxidizing cyclohexane with molecular oxygen to obtain an oxidized mixture liquid containing cyclohexyl hydroperoxide (CHHP) as a main product; (2) performing a homogenous catalytic decomposition with an oil-soluble transitional metal compound serving as a catalyst, and serving as a scale inhibitor by 1-hydroxy ethidene-1,1-diphosphonic acid (di)octyl ester, or a combination of 1-hydroxy ethidene-1,1-diphosphonic acid (di)octyl ester and phosphoric acid octyl ester, to decompose the CHHP in the oxidized mixture liquid into cyclohexanol and cyclohexanone; and (3) rectifying to obtain products of the cyclohexanol and the cyclohexanone. | 04-16-2015 |
20150105590 | Process and device for preparing cyclohexanol and cyclohexanone by cyclohexane oxidation - A process for preparing cyclohexanol and cyclohexanone by cyclohexane oxidation includes steps of: non-catalyticly oxidizing cyclohexane with molecular oxygen in the air to obtain an oxidation mixture containing CHHP as a main product; performing a homogenous catalytic decomposition of the CHHP to obtain cyclohexanol and cyclohexanone; and rectifying to obtain products of the cyclohexanol and the cyclohexanone, wherein the step of performing the homogenous catalytic decomposition involves a homogeneous catalytic decomposition reaction and distillation vessel which removes water via azeotropic rectification to reduce a water content of a decomposition liquid to be below 100 ppm. A device therefor includes the homogeneous catalytic decomposition reaction and distillation vessel for performing the homogenous catalytic decomposition of the CHHP. The homogeneous catalytic decomposition reaction and distillation vessel and pipelines thereof are free from scale formation, which elongates a production cycle to be over one year. | 04-16-2015 |
20150291493 | Process for Producing Phenol - In a process for producing phenol and/or cyclohexanone, a cleavage reaction mixture containing cyclohexyl-1-phenyl-hydroperoxide and cyclohexylbenzene is contacted with sulfuric acid and water under cleavage conditions effective to form a cleavage reaction effluent containing phenol, cyclohexanone, cyclohexylbenzene, water, sulfuric acid and 1-phenylcyclohexanol. At least a portion of the cleavage reaction effluent is neutralized with a basic material to produce a neutralized cleavage product and at least a portion of the neutralized cleavage product is supplied in the absence of an added dehydration catalyst to a distillation column. The distillation column is operated so that at least a portion of the neutralized cleavage product is exposed to a temperature greater than 70° C. at at least one location in the distillation column whereby at least a portion of the 1-phenylcyclohexanol in the neutralized cleavage product is dehydrated to phenylcyclohexene. | 10-15-2015 |
20150353459 | System and Process for Making Phenol and/or Cyclohexanone - A system for producing high-purity phenol and/or cyclohexanone from cyclohexylbenzene oxidation includes a cyclohexylbenzene feed hydrogenation reactor, a bubble column oxidation reactor, a cyclohexylbenzene hydroperoxide concentrator, a cleavage reactor, and a separation and purification sub-system. The components and the integrated system are designed such that high-purity phenol and/or cyclohexanone can be produced at high energy efficiency. | 12-10-2015 |
20160009613 | Process for Making Alkylated Aromatic Compound | 01-14-2016 |
20160046550 | Process and Apparatus for Making Phenol and/or Cyclohexanone - A process for producing phenol and/or cyclohexanone by cleaving cyclohexylbenzene hydroperoxide in a loop cleavage reactor comprising multiple reaction zones connected in series. In desirable embodiments, fresh cyclohexylbenzene hydroperoxide feed(s) are supplied to reaction zones the final reaction zone, and fresh acid catalyst is supplied only to the final reaction zone. In desirable embodiments, a portion of the effluent exiting the final reaction zone is recycled to the first reaction zone. Each reaction zone is equipped with a heat exchanger downstream of the feed port to extract heat generated from the cleavage reaction. | 02-18-2016 |
20160075623 | Process for Producing Phenol - In a process for producing phenol and cyclohexanone, reaction components comprising cyclohexylbenzene hydroperoxide and an acid catalyst are supplied to a cleavage reaction zone, mixed under mixing conditions effective to combine the reaction components into a reaction mixture and at least part of the cyclohexylbenzene hydroperoxide in the reaction mixture is converted under cleavage conditions to into phenol and cyclohexanone; and a cleavage effluent is recovered from the cleavage reaction zone. The cleavage and mixing conditions are controlled such that the ratio t | 03-17-2016 |
20160102034 | Process for Producing Phenol and/or Cyclohexanone - In a process for producing phenol, a cleavage feed comprising cyclohexylbenzene hydroperoxide is supplied to a cleavage reaction zone and a cleavage reaction mixture comprising the cleavage feed is contacted in the cleavage reaction zone with a solid acid catalyst under conditions effective to produce a cleavage effluent comprising phenol and cyclohexanone. The cleavage effluent is then divided into at least a cleavage product and a cleavage recycle and the cleavage recycle and a polar solvent is supplied to the cleavage reaction zone to produce the cleavage reaction mixture with the cleavage feed. Preferably, the polar solvent is combined with the cleavage recycle before being charged into the cleavage reaction zone. | 04-14-2016 |
20160122298 | Process for Concentrating a Mixture Containing Organic Hydroperoxide - Method for concentrating an organic hydroperoxide mixture comprising a hydrocarbon and a hydroperoxide corresponding thereto comprises evaporating a first liquid mixture in a thin-film evaporation device followed by separation in a separation zone. Both the evaporation device and the separation zone operate at a low absolute pressure at a temperature lower than the thermal degradation temperature of the hydroperoxide to prevent thermal decomposition thereof. The process is particularly useful for concentrating an oxidation product made from the oxidation of cyclohexylbenzene. | 05-05-2016 |
20160251288 | Process for Making Phenol and/or Cyclohexanone | 09-01-2016 |