Class / Patent application number | Description | Number of patent applications / Date published |
585483000 | By dealkylation | 9 |
20080234527 | Method for Producing Hydrogen and System Therefor - The present invention provides a hydrogen production method capable of producing hydrogen with good efficiency while solving problems such as separation, lower-temperature reaction and heat supply in production of hydrogen by dehydrogenation reaction of raw material oil. Within a reaction tube of a double-tube structure comprising an inner tube composed of a hydrogen separating membrane, a metallic outer tube having a plurality of internal fins, and a metal oxide layer and further a catalyst supported on the fins, hydrocarbon having cyclohexane ring is dehydrogenated to produce hydrogen and aromatic hydrocarbon, and selective membrane separating operation of hydrogen is performed within the reaction system while conducting the dehydrogenation to remove mainly the hydrogen on a permeating side and obtain mainly the aromatic hydrocarbon on a non-permeating side. The other method comprises absorbing at least part of the resulting hydrogen flow to a hydrogen absorbing (storing) alloy to make the pressure on the hydrogen permeating side of the hydrogen separating membrane lower than that on the non-permeating side. | 09-25-2008 |
585486000 | Using extraneous agent in reaction zone, e.g., catalyst, etc. | 8 |
20100130801 | Catalytic Conversion of Alkylaromatic Compounds - A process for catalytically converting alkylaromatic compounds in a hydrocarbon feedstock, the process comprising passing a hydrocarbon feedstock including at least one alkylaromatic compound, wherein the alkyl group comprises at least two carbon atoms, through a reactor containing a crystalline silicate catalyst to produce an effluent including at least one aromatic compound and at least one light olefin selected from C | 05-27-2010 |
20110282122 | MOLECULAR SIEVE, CATALYST, AND/OR A PROCESS RELATING THERETO - One exemplary embodiment can be a molecular sieve. The molecular sieve can include one or more crystals. The molecular sieve can have an external surface area of no more than about 20 m | 11-17-2011 |
20120277512 | Processes for Transalkylating Aromatic Hydrocarbons - A process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream and a sulfur source to a transalkylation zone. The feed stream contacts a catalyst in the transalkylation zone in the presence of sulfur, and produces a reaction product stream comprising benzene and xylene. The invention includes methods to control the transalkylation process. | 11-01-2012 |
20130197290 | PROCESS FOR THE PREPARATION OF A CATALYST SUPPORT - Process for preparing a catalyst support which process comprises a) mixing pentasil zeolite having a bulk silica to alumina molar ratio in the range of from 20 to 150 with water, a silica source and an alkali metal salt, b) extruding the mixture obtained in step (a), c) drying and calcining the extrudates obtained in step (b), d) subjecting the calcined extrudates obtained in step (c) to ion exchange to reduce the alkali metal content, and e) drying the extrudates obtained in step (d); process for preparing a catalyst by furthermore impregnating such support with platinum in an amount in the range of from 0.001 to 0.1 wt % and tin in an amount in the range of from 0.01 to 0.5 wt %, each on the basis of total catalyst; ethylbenzene dealkylation catalyst obtainable thereby and a process for dealkylation of ethylbenzene which process comprises contacting feedstock containing ethylbenzene with such catalyst. | 08-01-2013 |
585488000 | And H | 4 |
20100217057 | ZSM-5, ITS PREPARATION AND USE IN ETHYLBENZENE DEALKYLATION - A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel. Further advantages are found if used in combination with a small crystal size ZSM-5. | 08-26-2010 |
585489000 | Transition metal-containing catalyst | 3 |
20100249479 | CATALYST COMPOSITION, ITS PREPARATION AND USE - A catalyst composition which comprises: a) a carrier which comprises at least 30 wt % of a binder selected from silica, zirconia and titania; at least 20 wt % of a pentasil zeolite, having a bulk silica to alumina ratio in the range of from 20 to 150 and being in its H | 09-30-2010 |
20130165727 | METHOD FOR SELECTIVE DEALKYLATION OF ALKYL-SUBSTITUTED C9+ AROMATIC COMPOUNDS USING BIMODAL POROUS DEALKYLATION CATALYST AT LOW TEMPERATURE - Disclosed is a method for selective dealkylation of alkyl-substituted C | 06-27-2013 |
20130281757 | ZSM-5, ITS PREPARATION AND USE IN ETHYLBENZENE DEALKYLATION - A new configuration of ZSM-5 is provided whereby the crystals have a higher average silica to alumina ratio at the edges of each crystallite than in the centre as determined from a narrow slit line scan profile obtained from SEM/EDX or TEM/EDX elemental analysis. Such ZSM-5 crystals are obtained by a preparation process using L-tartaric acid. The new configuration ZSM-5 provides significantly reduced xylene losses in ethylbenzene dealkylation, especially when combined with silica as binder, and one or more hydrogenation metals selected from platinum, tin, lead, silver, copper, and nickel. | 10-24-2013 |