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| Number | Title | Issue Date |
| 7592282 | Enhancement of alkylation catalysts for improved supercritical fluid regeneration A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of active sites. The plurality of active sites on the alkylation catalyst may ... | 09/22/2009 |
| 7550403 | Methods for recovering activity of molecular sieve catalysts The invention is directed to a method of rejuvenating silicoaluminophosphate molecular sieve catalyst that has been deactivated hydrothermally as well as a method of using the rejuvenated catalyst to make an olefin product from an oxygenate feed. In particular, the ... | 06/23/2009 |
| 7384882 | Process for regenerating titanium-containing catalysts The present invention discloses a process for regenerating titanium-containing catalysts, characterized in that a deactivated catalyst is treated in an acidic solution having a pH value of ≦3, and then dried and calcined. The process is simple in procedure and can... | 06/10/2008 |
| 7375143 | Catalyst recover from a slurry Embodiments of the invention relate to processes and apparatus for the washing and recovery of metal-containing catalyst solids in a form suitable for reclamation. More specifically, a catalyst recovery process comprises removing an organic residue with a washing me... | 05/20/2008 |
| 7365041 | Method for producing ammoxidation catalyst An ammoxidation catalyst comprising a molybdenum (component (1)), bismuth (component (2)), at least one element selected from the group consisting of nickel, cobalt, zinc, magnesium, manganese and copper (component (3)) and at least one element selected from the gro... | 04/29/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7316988 | Gas turbine single plant modifying method, a catalyst re-using method and a re-produced catalyst A high temperature denitration catalyst of a gas turbine single plant contains TiO2, at least one of WO3 and MoO3 and V2O5 of 0.5 wt % or less, preferably 0.2 wt % or less, or none of V2O5,... | 01/08/2008 |
| 7303731 | Method and apparatus for regenerating an iron-based fischer-tropsch catalyst Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, ... | 12/04/2007 |
| 7262147 | Method for preparing dehydrocyclodimerization catalyst This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant pr... | 08/28/2007 |
| 7256318 | Regeneration temperature control in a catalytic reaction system This invention is directed to controlling regenerator temperature in an oxygenate to olefin process. Because a significant amount of heat can produced in the regenerator during the regeneration process, at least a portion of the heat must be removed to keep the syst... | 08/14/2007 |
| 7241716 | Protecting catalytic sites of metalloaluminophosphate molecular sieves Metalloaluminophosphate molecular sieves and metalloaluminophosphate molecular sieve catalyst particles are protecting from degradation by water by maintaining said molecular sieves or catalysts in contact with a liquid mixture of alcohol and water, the mixture of a... | 07/10/2007 |
| 7232782 | Regeneration, pretreatment and precipitation of oxides of manganese Methods and systems for regenerating and pretreating oxides of manganese and precipitation of oxides of manganese from manganese salt solutions. The oxides of manganese and manganese salt solutions are processed utilizing heated aqueous oxidizing solutions at or nea... | 06/19/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7169735 | Catalyst and process for preparing the same The object of the present invention is to provide a catalyst that is highly active and capable of maintaining its activity for a long period of time even in a high-temperature environment. The present invention is a catalyst including: a porous carrier which is comp... | 01/30/2007 |
| 7153811 | Multi-component catalyst system for the polycondensation manufacture of polyesters This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) ... | 12/26/2006 |
| 7132581 | Catalyst pretreatment with aldehyde in an oxygenate to olefins reaction system This invention concerns processes for converting oxygenates to olefins that include a step of pretreating catalyst used in the conversion reaction. A fresh or regenerated metalloaluminophosphate molecular sieve, which is low in carbon content, is pretreated with an ... | 11/07/2006 |
| 7117718 | Device for ascertaining a particle concentration in an exhaust gas flow A device for ascertaining a particle concentration in an exhaust gas flow of a combustion device, particularly a diesel combustion device, is provided, which device ascertains very small particle concentrations in the exhaust gas of combustion devices, accompanied b... | 10/10/2006 |
| 7115537 | Process for the regeneration of zeolite catalysts A process for the regeneration of a zeolitic catalyst which is at least partially exhausted by use in the synthesis of optionally substituted methylenedianiline (MDA) and derivatives thereof, or of a mixture of optionally substituted MDA and derivatives thereof, wit... | 10/03/2006 |
| 7018447 | Method of cleaning a rotary concentrator A method of cleaning the adsorbent media of a rotary concentrator in-situ while maintaining operation of the concentrator, including directing washing liquid into the sectors in the desorb plenum, then rotating the sectors one full revolution plus at least one secto... | 03/28/2006 |
| 7015174 | Maintaining molecular sieve catalytic activity under water vapor conditions The invention is directed to methods for protecting metalloaluminophosphate molecular sieves, particularly silicoaluminophosphate (SAPO) molecular sieves, from loss of catalytic activity due to contact with a gas containing water. The methods of the invention provid... | 03/21/2006 |
| 7004328 | Process for extracting and purifying naturally occurring zeolite A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by removal of c... | 02/28/2006 |
| 6982235 | Method for regenerating solid catalyst A process for regenerating a solid catalyst which has been used for producing propylene oxide through an epoxidation reaction of propylene with an organic peroxide in a reactor packed with the solid catalyst, which comprises allowing a liquid to flow through the cat... | 01/03/2006 |
| 6982234 | Methods and apparatus for removing catalyst from oxidation reactor effluent Methods and apparatus for removing a catalyst from a reaction mixture formed by reacting a hydrocarbon or an oxygenated hydrocarbon with an oxidant in the presence of the catalyst in a reactor, in which the reaction mixture contains one or more dibasic acids. The ca... | 01/03/2006 |
| 6974559 | Apparatus for metering catalyst in a fluid catalytic cracking catalyst injection system A method and apparatus for metering catalyst in a fluid catalytic cracking catalyst injection system are provided. In one embodiment, apparatus for metering catalyst in a fluid catalytic cracking catalyst injection system includes a low pressure storage vessel coupl... | 12/13/2005 |
| 6962616 | Preparation of adsorbents from organic fertilizer and mineral oil and their application for removal of acidic gases from sulfur containing wet gas streams A method of making an adsorbent which includes: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; b) treating the fertilizer with mineral oil; and c) pyrolyzing the treated fertilizer at temperatures between about 600° C. and about ... | 11/08/2005 |
| 6953768 | Multi-component catalyst system for the polycondensation manufacture of polyesters This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) ... | 10/11/2005 |
| 6929701 | Process for decoating a washcoat catalyst substrate The invention relates to a process for decoating a used washcoat carrier substrate to produce a clean, inert carrier or substrate. In a preferred embodiment, a process according to the invention includes treating a washcoat catalyst substrate in an aqueous solution ... | 08/16/2005 |
| 6916965 | Treatment of acid catalysts The invention is directed to a method of stabilizing metalloaluminophosphate molecular sieves and catalysts derived therefrom. In particular, the invention is directed to a method of treating such molecular sieves with one or more nitrogen containing compounds havin... | 07/12/2005 |
| 6913012 | Cooking appliance venting system A domestic cooking appliance that includes a cabinet, and at least one oven. Air space is provided between the cabinet and the oven. The cooking appliance includes venting to allow air to enter and exit the air space and an exhaust passage connecting the oven with t... | 07/05/2005 |
| 6872369 | Selective separation of iron by treatment with an ion-exchanging resin comprising diphosphonic acid groups The invention relates to a process for selectively separating iron from other metal ions, in particular ions present in certain oxidation catalysts. It also relates to a process for recycling catalysts in the reaction for the oxidation of alcohols and/or keto... | 03/29/2005 |
| 6872678 | Process for activating a catalyst containing an S-containing additive The present invention pertains to a process for activating a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive, wherein the catalyst is contacted with ... | 03/29/2005 |
| 6858761 | Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the presence of a resin catalyst, thereby producing the addition reaction pr... | 02/22/2005 |
| 6814878 | Process for carrying out a hydrogenation reaction and removing pyrophoric catalyst A batch process for carrying out a hydrogenation reaction comprises mixing a pyrophoric catalyst with reactants and solvents to form a reaction mixture in a reaction vessel. Hydrogen is added to the reaction vessel. After hydrogenation, the desired hydrogenation pro... | 11/09/2004 |
| 6800585 | Catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hyd... | 10/05/2004 |
| 6777369 | Process for producing catalyst The present invention relates to the effective utilization of a used catalyst containing at least molybdenum, an A element (at least one element selected from the group consisting of phosphorus and arsenic) and an X element (at least one element selected from the gr... | 08/17/2004 |
| 6756516 | Treatment of acid catalysts The invention is directed to a method of stabilizing metalloaluminophosphate molecular sieves and catalysts derived therefrom. In particular, the invention is directed to a method of treating such molecular sieves with one or more nitrogen containing compounds selec... | 06/29/2004 |
| 6710002 | Method for regenerating a zeolitic catalyst A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at fro... | 03/23/2004 |
| 6696385 | Method of preserving sulfonic acid-type cation-exchange resin modified with thiol-containing amine compound The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a thiol-containing amine compound and which is employed as a catalyst for ... | 02/24/2004 |
| 6685896 | Method for recovering rhodium from reaction products of oxosynthesis The invention relates to a method for separating and recovering rhodium from reaction products of oxosynthesis, especially reaction products containing cobalt. The invention also relates to the reuse of rhodium as a catalyst for hydroformulation and to a ... | 02/03/2004 |
| 6673732 | Process for catalytic ammonia production--preparation and recovery of ammonia synthesis catalyst A catalyst active in ammonia synthesis with improved activity and a process for the recovery of useful components from the catalyst.... | 01/06/2004 |