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| Number | Title | Issue Date |
| 7405174 | Process for regeneration of a catalyst that contains an EUO-structural-type zeolite A process for regeneration of a catalyst that comprises at least one EUO-structural-type zeolite in acid form and at least one hydro-dehydrogenating metal, used in a process for isomerization of a hydrocarbon feedstock that comprises aromatic compounds with eight ca... | 07/29/2008 |
| 7312173 | Regeneration method with efficient oxygen utilization This invention relates to regeneration of coked catalyst by combustion so that the catalyst can be reused in a hydrocarbon conversion reaction. The completion of coke burn is generally measured with a combination of temperature or change in oxygen concentration. Dro... | 12/25/2007 |
| 7291311 | Process for controlling a moving bed combustion zone and its use Process for controlling the combustion zone of a fluidized bed process comprising a regeneration zone and a reaction zone, the catalyst circulating between these two zones, and the regeneration zone comprising a combustion stage of the coke deposited on the catalyst... | 11/06/2007 |
| 7247592 | Method of activating catalyst for carbon monoxide removal A carbon monoxide removing catalyst such as a ruthenium supporting catalyst is provided for removing, through oxidation thereof, carbon monoxide from an alcohol reformed gas containing hydrogen and carbon monoxide to be supplied to a fuel cell. For its activation, t... | 07/24/2007 |
| 7223710 | Cyclic catalyst regeneration process using a circulating stream for desorption A process in which halogen is recovered from a cyclic operation for regenerating hydrocarbon conversion catalysts is disclosed. The process uses an arrangement of beds of adsorbent and a circulating stream to return the halogen-containing materials to a regeneration... | 05/29/2007 |
| 7183229 | Semiconductor thin film forming method, production methods for semiconductor device and electrooptical device, devices used for these methods, and semiconductor device and electrooptical device An object of the present invention is to provide a method for easily forming a polycrystalline semiconductor thin-film, such as polycrystalline silicon having high crystallinity and high quality, or a single crystalline semiconductor thin-film at inexpensive cost, t... | 02/27/2007 |
| 7151199 | Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One m... | 12/19/2006 |
| 7115538 | Ethylbenzene conversion catalyst and process An ethylbenzene conversion catalyst is described which comprises a molecular sieve and a hydrogenation metal, wherein the catalyst exhibits a benzene hydrogenation activity at 100° C. of less than about 100 and a metal dispersion, as measured by hydrogen chemisorpt... | 10/03/2006 |
| 7112423 | Nucleic acid amplification using nicking agents The present invention provides methods and kits for amplifying target nucleic acids (including whole genomes) using nicking agents. In certain aspects, the amplification does not require the use of any external oligonucleotide primers that are capable of annealing t... | 09/26/2006 |
| 7045477 | Process for continuously regenerating catalyst particles A process for continuously regenerating catalyst particles comprising: passing deactivated catalyst particles downwards in sequence through the first coke-burning zone, second coke-burning zone, oxychlorination zone, and calcination zone in the regenerator, wherein ... | 05/16/2006 |
| 7037871 | Low-temperature regeneration of zeolite L using ozone A process is disclosed for regenerating a hydrocarbon conversion catalyst comprising zeolite L with ozone. The catalyst is contacted with ozone at a temperature of from about 20 to about 250° C. and a concentration of ozone of from about 0.1 to about 5 mol-%. The c... | 05/02/2006 |
| 7011809 | Attrition resistant gamma-alumina catalyst support A γ-alumina catalyst support having improved attrition resistance produced by a method comprising the steps of treating a particulate γ-alumina material with an acidic aqueous solution comprising water and nitric acid and then, prior to adding any catalytic materi... | 03/14/2006 |
| 6992038 | Zinc chloride-loaded support and method for producing the same The present invention is to solve the problems caused by a conventional method for producing a zinc chloride-loaded support wherein zinc chloride is adsorbed on a solid support in an aqueous solution of zinc chloride. The problems include environmental destruction c... | 01/31/2006 |
| 6916756 | Regeneration of a dehydrogenation catalyst A process for regenerating a dehydrogenation catalyst comprises the steps (a)-(f): (a) flushing with inert gas at a pressure of from 0.5 to 2.0 bar and a gas hourly velocity of from 1000 to 50 000 h−1; (b) passing an oxygen-con... | 07/12/2005 |
| 6790802 | Cyclic catalyst regeneration process using adsorption and desorption on vent stream A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of beds of adsorbent to return the halogen-containing materials to a circul... | 09/14/2004 |
| 6784132 | Cyclic catalyst regeneration process using adsorption and desorption A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of beds of adsorbent to maintain the halogen-containing materials within a ... | 08/31/2004 |
| 6506702 | Process and vessel for regeneration of a catalyst including monitoring and monitoring and control of combustion completion The invention concerns a process for regenerating a catalyst in a fixed bed, for example a catalyst for reforming or for aromatic compound production, including a step for monitoring and controlling combustion completion which is carried out after the cat... | 01/14/2003 |
| 6472340 | Catalytic reforming catalyst activation Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with hydrogen while introducing a nonmetallic chlorine-containing compound into a reactor of the multiple reactor sy... | 10/29/2002 |
| 6133183 | Process for regenerating a catalyst for the production of aromatic compounds or for reforming, with improved oxychlorination The invention concerns a process for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, comprising combustion (A), oxychlorination (B) and calcining (C) steps, in which at least one chlorinating agent (conduit 1... | 10/17/2000 |
| 6121180 | Precombustion of halogen-containing compounds in catalyst regeneration processes A method for regenerating a hydrocarbon conversion catalyst wherein at least a portion of a halogen-containing compound is precombusted in a precombustion zone, and the catalyst is regenerated in the presence of the halogen. By precombusting the halogen-c... | 09/19/2000 |
| 6103652 | Staged combustion process and apparatus for regenerating a reforming or aromatic compound production catalyst in a moving bed The invention concerns a process for moving bed regeneration of a reforming or aromatic hydrocarbon production catalyst. The catalyst includes a support, at least one noble metal and at least one halogen. The process includes a combustion step in which th... | 08/15/2000 |
| 6048814 | Process and unit for regeneration of a catalyst for the production of aromatic compounds or for reforming The invention concerns a process and unit for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, the catalyst being in a moving bed, comprising combustion, oxychlorination and calcining steps, in which at least ... | 04/11/2000 |
| 5880050 | Process for the regeneration of catalyst containing sulphur A process for the regeneration of a sulfur containing catalysts, wherein the catalyst is stripped of sulfur before the oxychlorination treatment of the regeneration process, typically before the catalyst is sent to the regeneration zone. The process is pa... | 03/09/1999 |
| 5866495 | Method of regenerating deactivated catalysts A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the c... | 02/02/1999 |
| 5776849 | Regeneration of severely deactivated reforming catalysts The invention is directed a process for regenerating deactivated reforming catalysts comprising at least one Group VIII metal on zeolite L, preferably wherein the catalysts are extruded using a binder material such as alumina or silica. The process includ... | 07/07/1998 |
| 5763348 | Method of regenerating deactivated catalyst A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the c... | 06/09/1998 |
| 5756414 | Method of regenerating deactivated catalyst The present invention is a process for regenerating deactivated catalyst or redispersing catalytic metal in a fresh catalyst comprising at least one Group VIII catalytic metal, zeolite, an inert binder. The process comprises coke burn, hydrogen reduction,... | 05/26/1998 |
| 5739070 | Process for regenerating a fluorination catalyst Process for regenerating a fluorination catalyst The invention relates to a process for regenerating a fluorination catalyst containing chromium and magnesium after use in a fluorination reaction, in which the used catalyst is treated with a mixture compr... | 04/14/1998 |
| 5726112 | Method of regenerating deactivated catalysts A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the c... | 03/10/1998 |
| 5712214 | Regeneration of aromatization catalysts A low-pressure, high-temperature, wet post-treatment after oxyhalogenation during regeneration to improve activity and selectivity recovery of a regenerated catalyst involves exposing a halogenated catalyst to a gaseous stream including water having a par... | 01/27/1998 |
| 5698486 | Method of regenerating deactivated catalysts A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with oxygen and water at elevated temperatures, contacting the c... | 12/16/1997 |
| 5573988 | Catalyst regeneration process The present invention concerns a regeneration process for a catalyst containing at least one metallic element selected from the group formed by platinum, palladium, ruthenium, rhodium, osmium, iridium and nickel, preferably platinum, on a refractory oxide... | 11/12/1996 |
| 5457077 | Moving bed regeneration process with combined drying and dispersion steps A regeneration process for reconditioning catalyst particles containing platinum by transferring the catalyst particles through a combustion zone and a reconditioning zone is disclosed. Drying of the catalyst particles and redispersion of the platinum occ... | 10/10/1995 |
| 5407877 | Catalyst treatment process A process for the reactivation of a chromium-based fluorination catalyst, in particular chromia, by contacting the deactivated chromium-based fluorination catalyst with an atmosphere containing water vapour at elevated temperature, preferably above 300° ... | 04/18/1995 |
| 5397458 | Moving bed regeneration process with internally mixed chloride gas A regeneration process and apparatus eliminates the need for an external chlorination recycle loop. The method and apparatus uses two-pass internal mixing of a chlorine compound input stream and drying gas to both mix and heat the chlorination gas before ... | 03/14/1995 |
| 5391292 | Cyclic reforming catalyst regeneration Disclosed is a method for starting up a cyclic or semi-cyclic reforming reactor after catalyst regeneration. The method mitigates disruptions to the reforming unit after catalyst regeneration, such as excessive light gas make and a decrease in recycle hyd... | 02/21/1995 |
| 5378669 | Method for treating a catalyst A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, redispersing the noble metal on the surface of the catalyst supp... | 01/03/1995 |
| 5376607 | Method for controlling moisture by coke composition A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by rejecting from the combustion process a high moisture content flue gas stream which is produced by the combustion of a relatively large proportion of the h... | 12/27/1994 |
| 5270272 | Sulfur removal from molecular-sieve catalyst A sulfur-sensitive catalyst which has been deactivated by accumulating sulfur on the catalyst is desulfurized by contact with ammonia at high temperature. The technique is particularly effective for reforming catalysts containing a large-pore zeolite whic... | 12/14/1993 |
| 5260238 | Process for regenerating a deactivated catalyst There is disclosed a process for regenerating a deactivated catalyst containing a zeolite and a noble metal of group VIII of the Periodic Table supported thereon which comprises subjecting the deactivated catalyst to decoking treatment under reductive or ... | 11/09/1993 |
