Patent application number | Description | Published |
20080293991 | Oligomerization Using Molecular Sieve Catalysts - Treatment with steam, especially at sub-atmospheric pressure, rejuvenates deactivated zeolites that have been used as catalysts for liquid phase or dense phase oligomerization. | 11-27-2008 |
20080319234 | Heterogeneous arylalkyl oxidation promoter - A promoter can have utility in selective heterogeneous oxidation of arylalkyl hydrocarbons such as, for example, cyclohexyl benzene and/or sec-butyl benzene to form hydroperoxides. The promoter can include the product of contacting a solid support comprising a metal oxide surface and an iron compound. The solid support can include, for example, titanium dioxide and/or an iron oxide such as magnetite and can have magnetic susceptibility. A method for the oxidation of arylalkyl hydrocarbons to form hydroperoxides can include contacting | 12-25-2008 |
20090187047 | PROCESS FOR PRODUCING PHENOL AND METHYL ETHYL KETONE - A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C | 07-23-2009 |
20090203862 | Molecular Sieve Catalyst Treatment - Treatment at elevated temperature and advantageously superatmospheric pressure with an inert gas, especially nitrogen, rejuvenates molecular sieve catalysts deactivated by use in liquid-phase or supercritical or dense-phase olefin oligomerization, or by use in aromatic alkylation. | 08-13-2009 |
20090306433 | Process for Producing Phenol and Methyl Ethyl Ketone - A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C | 12-10-2009 |
20090312580 | Process For Producing Sec-Butylbenzene - A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and a C | 12-17-2009 |
20100185016 | Process for Oxidizing Alkylaromatic Compounds - In a process for producing hydroperoxides, an alkylaromatic compound of general formula (I): | 07-22-2010 |
20100197978 | IPA From Propylene Using Mixed Metal Oxides - The invention relates to the production of isopropyl alcohol (IPA) by direct hydration of propylene over mixed transition metal oxides co-precipitated with ZrO | 08-05-2010 |
20100217048 | Process For Oxidizing Alkylaromatic Compounds - In a process for producing hydroperoxides, an alkylaromatic compound of general formula (I): | 08-26-2010 |
20100222609 | Oxidation of Hydrocarbons - In a process for oxidizing a hydrocarbon to a corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): | 09-02-2010 |
20100228047 | Oxidation of Hydrocarbons - In a process for oxidizing a hydrocarbon to the corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, a reaction medium comprising a hydrocarbon is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): | 09-09-2010 |
20100234589 | Oxidation of Hydrocarbons - In a process for oxidizing a hydrocarbon to a corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): | 09-16-2010 |
20100317896 | Process For Producing Sec-Butylbenzene - A process for producing sec-butylbenzene comprises feeding reactants comprising benzene and a C | 12-16-2010 |
20100324326 | Mixed Metal Oxide Catalysts and Processes For Their Preparation and Use - A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula Mo | 12-23-2010 |
20110021844 | Process for Producing Cyclohexanone - In a process for producing cyclohexanone, cyclohexylbenzene is oxidized to produce cyclohexylbenzene hydroperoxide and then the resultant cyclohexylbenzene hydroperoxide is cleaved to produce an effluent stream comprising phenol and cyclohexanone. At least a portion of the effluent stream is then fed to at least one hydrogenation reaction zone, where the effluent stream portion is contacted with hydrogen in the presence of a hydrogenation catalyst under conditions effective to convert at least part of the phenol in the effluent portion into cyclohexanone. | 01-27-2011 |
20110037022 | Process for Producing Phenol and/or Cyclohexanone - In a process for producing phenol and/or cyclohexanone, benzene and hydrogen are contacted with a first catalyst in a hydroalkylation step to produce a first effluent stream comprising cyclohexylbenzene, cyclohexane, and unreacted benzene. At least part of the first effluent stream is supplied to a first separation system to divide the first effluent stream part into a cyclohexylbenzene-rich stream and a C6 product stream comprising unreacted benzene and cyclohexane. | 02-17-2011 |
20110092742 | Process for Producing Alkylbenzene Hydroperoxides - In a process for producing alkylbenzene hydroperoxides, a feed comprising (i) sec-butylbenzene, (ii) cumene in an amount greater than 10 wt % of the total feed and (iii) at least one of iso-butylbenzene and tert-butylbenzene in an amount up to 20 wt % of the total feed is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): | 04-21-2011 |
20110105805 | Process for Producing Phenol - In a process for producing phenol, cyclohexylbenzene is oxidized to produce cyclohexylbenzene hydroperoxide and then the resultant cyclohexylbenzene hydroperoxide is cleaved to produce an effluent stream comprising phenol and cyclohexanone. At least a portion of the effluent stream is then fed to at least one dehydrogenation reaction zone, where the effluent stream portion is contacted with a dehydrogenation catalyst under conditions effective to convert at least part of the cyclohexanone in the effluent portion into phenol and hydrogen. | 05-05-2011 |
20110160489 | Process for Producing Phenol and Methyl Ethyl Ketone - In a process for reducing the level of tert-butylbenzene in a mixed butylbenzene feed comprising tert-butylbenzene and sec-butylbenzene, the feed is contacted under dealkylation conditions with a catalyst system comprising a dealkylation catalyst whereby the tert-butylbenzene is selectively dealkylated to produce an effluent stream which comprises benzene and which has a lower concentration of tert-butylbenzene than said feed. | 06-30-2011 |
20110172466 | Oxidation of Hydrocarbons - In a process for oxidizing a hydrocarbon to the corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, a reaction medium comprising a hydrocarbon is contacted with an oxygen-containing gas in a reaction zone and in the presence of a catalyst comprising a cyclic imide. During the oxidation process, a portion of the reaction medium is continuously or intermittently removed from the reaction zone, is stripped of water and organic acid impurities and then returned to the reaction zone. | 07-14-2011 |
20110190543 | Oxidation of Alkylaromatic Compounds - In a process for oxidizing an alkylaromatic compound to the corresponding hydroperoxide, a feed comprising an alkylaromatic compound is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide. The contacting is conducted at a temperature of about 90° C. to about 150° C., with the cyclic imide being present in an amount between about 0.05 wt % and about 5 wt % of the alkylaromatic compound in the feed and the catalyst being substantially free of alkali metal compounds. The contacting oxidizes at least part of the alkylaromatic compound in said feed to the corresponding hydroperoxide. | 08-04-2011 |
20110190546 | Process For Producing Phenol - In a process for producing phenol or a substituted phenol, an alkylaromatic hydroperoxide having a general formula (I): | 08-04-2011 |
20110301387 | Process For Producing Phenol - Disclosed is a process for producing phenol or a substituted phenol and a co-product comprising the steps of (i) contacting a first stream comprising an alkylaromatic compound with a second stream comprising an oxygen-containing gas in the presence of a first catalyst comprising a cyclic imide under conditions to convert at least a portion of said alkylaromatic compound to an alkylaromatic hydroperoxide, (ii) producing an effluent stream comprising said cyclic imide, said alkylaromatic hydroperoxide, and said alkylaromatic compound wherein said effluent stream has an alkylaromatic hydroperoxide concentration of from 10 to 40 wt %; and (iii) contacting in a second reactor at least a portion of said effluent stream with a second catalyst to convert said alkylaromatic hydroperoxide to a product stream comprising phenol and said co-product. | 12-08-2011 |
20120116141 | Oligomerisation Of Olefins With Zeolite Catalyst - The conversion and run length for oligomerisation of olefins over a molecular sieve catalyst in a tubular reactor is improved by controlling the peak temperature to not exceed 50 degrees C. above the temperature of the temperature control fluid exiting the shell side outlet of the reactor. A tubular reactor containing molecular sieve catalyst is provided with a multipoint thermocouple in at least one tube, and optionally with a bottom design adapted for fast unloading of the molecular sieve catalyst from the tubular reactor. | 05-10-2012 |
20120149941 | Oxidation of Hydrocarbons - In a process for oxidizing a hydrocarbon to a corresponding hydroperoxide, alcohol, ketone, carboxylic acid or dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide of the general formula (I): | 06-14-2012 |
20120215025 | Oxidation Of Hydrocarbons - In a process for oxidizing a hydrocarbon, the hydrocarbon is contacted with oxygen in the presence of an N-substituted cyclic imide and under conditions to oxidize the hydrocarbon to produce an oxidized hydrocarbon product and at least one decomposition product of the N-substituted cyclic imide. At least a portion of the at least one decomposition product is contacted with hydroxylamine or a salt thereof under conditions to convert the at least one decomposition product back to said imide. | 08-23-2012 |
20120277472 | Hydrogenation Process - The present invention relates to a hydrogenation process that may be used in connection with the production of phenol. In the process, a composition comprising: (i) cyclohexylbenzene; and (ii) a hydrogenable component are contacted with hydrogen in the presence of a hydrogenation catalyst under hydrogenation conditions. The hydrogenable component can be one or more of an olefin, a ketone or phenol. The hydrogenation catalyst has hydrogenation component and a support. | 11-01-2012 |
20120302798 | Dehydrogenation Process - A dehydrogenation process for the dehydrogenation of at least one dehydrogenatable hydrocarbon, the process comprising contacting a feed comprising the at least one dehydrogenatable hydrocarbon under dehydrogenation conditions with a catalyst composition comprising a support and at least one dehydrogenation component wherein said conditions include a temperature of from 400° C. to 750° C. and a pressure of at least 50 psig (345 kPag). | 11-29-2012 |
20120302799 | Dehydrogenation Catalyst And Process - A catalyst composition comprises (i) a support; (ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and (iii) potassium or a potassium compound present in an amount of about 0.15 to about 0.6 wt % of potassium based upon the total weight of the catalyst composition, wherein the catalyst composition has an oxygen chemisorption of greater than 50%. | 11-29-2012 |
20120323045 | Dehydrogenation of Cyclohexanone to Produce Phenol - In a process for the dehydrogenation of cyclohexanone to produce phenol, a feed comprising cyclohexanone is contacted with a dehydrogenation catalyst under dehydrogenation conditions comprising a temperature of less than 400° C. and a pressure of less than 690 kPa, gauge, such 0.1 to 50 wt % of the cyclohexanone in said feed is converted to phenol and the dehydrogenation product contains less than 100 ppm by weight of alkylbenzenes. | 12-20-2012 |
20130203984 | "OXIDATION OF HYDROCARBONS" - In a process for oxidizing a hydrocarbon to a product comprising at least one of the corresponding hydroperoxide, alcohol, ketone, carboxylic acid and dicarboxylic acid, the hydrocarbon is contacted with an oxygen-containing compound in at least one oxidation zone in the presence of a catalyst comprising a cyclic imide having an imide group of formula (I): | 08-08-2013 |
20130211036 | Oxidation of Alkylbenzenes - A process for oxidizing a composition comprising contacting an alkylbenzene of the general formula (I): | 08-15-2013 |
20130274524 | Oxidation of Alkylaromatic Compounds - In a process for oxidizing an alkylaromatic compound to the corresponding hydroperoxide, a feed comprising an alkylaromatic compound is contacted with an oxygen-containing gas in the presence of a catalyst comprising a cyclic imide. The contacting is conducted at a temperature of about 90° C. to about 150° C., with the cyclic imide being present in an amount between about 0.05 wt % and about 5 wt % of the alkylaromatic compound in the feed and the catalyst being substantially free of alkali metal compounds. The contacting oxidizes at least part of the alkylaromatic compound in said feed to the corresponding hydroperoxide. | 10-17-2013 |
20140066663 | Dehydrogenation Catalyst and Process - A catalyst composition comprises (i) a support; (ii) a dehydrogenation component comprising at least one metal or compound thereof selected from Groups 6 to 10 of the Periodic Table of Elements; and (iii) tin or a tin compound, wherein the tin is present in an amount of 0.01 wt % to about 0.25 wt %, the wt % based upon the total weight of the catalyst composition. | 03-06-2014 |
20140187821 | Process for Producing Cycloalkylaromatic Compounds - In a process for producing a cycloalkylaromatic compound, an aromatic compound and a cyclic olefin are contacted with a first catalyst under conditions effective to produce a reaction product comprising the cycloalkylaromatic compound and at least one non-fused bicyclic by-product. The at least one non-fused bicyclic by-product is then contacted with a second catalyst under conditions effective to convert at least a portion of the at least one non-fused bicyclic by-product to a converted by-product. | 07-03-2014 |
20140212666 | Alkyl Aromatic Hydroalkylation for the Production of Plasticizers - Provided are compounds of the following: | 07-31-2014 |
20140275605 | (Methylcyclohexyl)Toluene Isomer Mixtures,Their Production and Their Use in the Manufacture of Plasticizers - A composition is described comprising a mixture of (methylcyclohexyl)toluene isomers having the following formula: | 09-18-2014 |
20140275606 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: | 09-18-2014 |
20140275607 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: | 09-18-2014 |
20140275609 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing methyl-substituted biphenyl compounds, a feed comprising at least one aromatic hydrocarbon selected from the group consisting of toluene, xylene and mixtures thereof is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes and/or (dimethylcyclohexyl)xylenes. At least part of the hydroalkylation reaction product is then dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of methyl-substituted biphenyl compounds. | 09-18-2014 |
20140296581 | Process for Producing Phenol - In a process for producing phenol, cyclohexylbenzene is contacted with oxygen in the presence of an oxidation catalyst comprising a cyclic imide under oxidation conditions effective to produce a product comprising cyclohexylbenzene hydroperoxide and unreacted cyclic imide catalyst. At least a portion of the product is contacted with a cleavage catalyst under conditions effective to convert at least a portion of the cyclohexylbenzene hydroperoxide into a second product comprising further unreacted cyclic imide catalyst, phenol, and cyclohexanone. A portion of the further unreacted cyclic imide catalyst may then be removed from the second product and optionally recycled back to the oxidation step. | 10-02-2014 |
20140316098 | Process for Producing Phenol - In a process for producing phenol, a composition comprising an alkylaromatic compound is contacted with an oxygen-containing stream in the presence of an oxidation catalyst comprising a cyclic imide under oxidation conditions effective to oxidize 15 wt % or less of the alkylaromatic compound based upon the total weight of the composition and produce an oxidation product comprising unreacted alkylaromatic compound and alkylaromatic hydroperoxide in a molar ratio of 6:1 to 100:1. Thereafter, at least a portion of the oxidation product is contacted with an acidic molecular sieve catalyst under cleavage conditions effective to convert at least a portion of the alkylaromatic hydroperoxide into phenol and cyclohexanone. | 10-23-2014 |
20140316155 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing methyl-substituted biphenyl compounds, a feed comprising at least one aromatic hydrocarbon selected from the group consisting of toluene, xylene and mixtures thereof is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes and/or (dimethylcyclohexyl)xylenes together with dialkylated C | 10-23-2014 |
20140336417 | Oxidation of Cyclohexylbenzene - In a process for oxidizing cyclohexylbenzene, a composition comprising cyclohexylbenzene is contacted with oxygen in at least one oxidation zone under oxidation conditions sufficient to produce at least some (i) cyclohexylbenzene hydroperoxide; (ii) a first byproduct; and (iii) a second byproduct in an effluent. A ratio β is determined according to the following formula: | 11-13-2014 |
20140336422 | Process for Producing a Monocycloalkyl-Substituted Aromatic Compound - In a process for producing mono-cycloalkyl-substituted aromatic compound, benzene and cyclic monoolefin are contacted with a catalyst under alkylation conditions to produce an effluent containing mono-cycloalkyl-substituted aromatic compound. The catalyst comprises a molecular sieve. | 11-13-2014 |
20140371490 | Process for Producing Phenol - In a process for producing phenol, a mixture of cyclohexylbenzene with from 10 to 90 wt % of a solvent is contacted with oxygen in the presence of a catalyst and under conditions effective to oxidize at least a portion of the cyclohexylbenzene to cyclohexylbenzene hydroperoxide. The catalyst comprises a cyclic imide having an imide group of formula (I): | 12-18-2014 |
20140371498 | Process of Producing Cyclohexylbenzene - In a process for producing cyclohexylbenzene, benzene is contacted with hydrogen under hydroalkylation conditions effective to form a first effluent stream comprising cyclohexylbenzene, cyclohexane, methylcyclopentane, and unreacted benzene. At least a portion of the first effluent stream is contacted with a dehydrogenation catalyst under dehydrogenation conditions to convert at least a portion of the cyclohexane to benzene thereby forming a second effluent stream. The amount of methylcyclopentane in the second effluent stream is different by no more than 65% of the total amount of the portion of the first effluent stream, said amounts being on a weight basis. A methylcyclopentane-containing stream is removed from either the first or the second effluent stream and at least a portion of the second effluent stream containing benzene is recycled to the hydroalkylation step. | 12-18-2014 |
20140378697 | Hydroalkylation Catalyst and Process for Use Thereof - This invention relates to process for producing biphenyl esters, the process comprising:
| 12-25-2014 |
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 |
20150080545 | Production and Use of 3,4' and 4,4'-Dimethylbiphenyl Isomers - In a process for producing 3,4′ and/or 4,4′ dimethyl-substituted biphenyl compounds, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl-substituted biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing at least 50% of 3,4′ and 4,4′ dimethylbiphenyl isomers by weight of the first stream and at least one second stream comprising one or more 2,x′ (where x′ is 2′, 3′, or 4′) and 3,3′ dimethylbiphenyl isomers. | 03-19-2015 |
20150080546 | Production and Use of 3,4' and 4,4'-Dimethylbiphenyl Isomers - In a process for producing 3,4′ and/or 4,4′ dimethyl-substituted biphenyl compounds, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl-substituted biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing at least 50% of 3,4′ and 4,4′ dimethylbiphenyl isomers by weight of the first stream and at least one second stream comprising one or more 2,x′ (where x′ is 2′, 3′, or 4′) and 3,3′ dimethylbiphenyl isomers. | 03-19-2015 |