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| Number | Title | Issue Date |
| 7208448 | In an amine or nitrile embedded passivated hydrogenation catalyst The invention relates to a passivated hydrogenation catalyst that is embedded in a primary amine, a derivative thereof, and/or a nitrile, the process to make such catalysts, as well as the use of such catalysts in a hydrogenation process in which an amine or a deriv... | 04/24/2007 |
| 6159887 | Vanadium traps for catalyst for catalytic cracking A catalytic composition useful in the catalytic-cracking of hydrocarbons is described, which contains at least one agent causing the inactivation of vanadium, which may be present in the hydrocarbons as a contaminant. These agents obtain inactivation of v... | 12/12/2000 |
| 6110357 | Passivated catalysts for cracking process A zeolite-containing cracking catalyst is passivated with compounds of boron and zirconium, and preferably also antimony. The thus-passivated cracking catalyst is employed in a process for catalytically cracking a hydrocarbon-containing oil feed. In anoth... | 08/29/2000 |
| 5985778 | Method and compositions for stabilization of heavy metals, acid gas removal and pH control in contaminated matrices A one-step method and compositions for stabilization of heavy metals, acid gas removal and pH control in hazardous and toxic solid, semi-solid, liquid and/or gaseous matrices using a mixture of reactive agents in a single product, for the broader purpose ... | 11/16/1999 |
| 5972201 | Hydrocarbon conversion catalyst additives and processes Magnetic separation of fluid cracking catalyst and magnetic hooks can be improved by adding antimony, in the feed or during catalyst manufacture, to enhance the magnetic susceptibility, thus increasing the separation efficiency of the older less active fl... | 10/26/1999 |
| 5958219 | Metals passivation by magnetic treatment to permit higher metals levels on FCC catalyst A process for metals passivation of metals-contaminated equilibrium catalyst (ECat) used in a fluidized catalytic cracking (FCC) process is disclosed. Repeated treatment of a slip stream of ECat in a high-strength magnetic field, preferably a magnetic cat... | 09/28/1999 |
| 5914028 | Reforming process with catalyst pretreatment A catalytic reforming process using a halided zeolite catalyst containing platinum in a metal-coated reactor system where, prior to catalyst loading and reforming, halide acid is removed from the catalyst. The process comprises providing a reforming react... | 06/22/1999 |
| 5858208 | Methods for improving conversion in fluidized catalytic cracking units The present invention, therefore, is directed to a novel method for improving conversion in a fluidized catalytic cracking unit feed stream containing vanadium. According to the method, an effective amount of a composition comprising at least one overbase... | 01/12/1999 |
| 5719099 | Method and compositions for stabilization of heavy metals, acid gas removal and ph control in contaminated matrices A one-step method and compositions for stabilization of heavy metals, acid gas removal and pH control in hazardous and toxic solid, semi-solid, liquid and/or gaseous matrices using a mixture of reactive agents in a single product, for the broader purpose ... | 02/17/1998 |
| 5407878 | Metal passivation/SOX control compositions for FCC A composition comprising a coprecipitated magnesia-lanthana-alumina (MgO--La2 O3 --Al2 O3) wherein the MgO component is present as microcrystalline phase, having a BET (N2) surface area of at least 13... | 04/18/1995 |
| 5401384 | Antimony and tin containing compound, use of such a compound as a passivating agent, and process for preparing such a compound An antimony and tin containing compound for passivating contaminant metals to which a catalyst is exposed during fluid catalytic cracking of hydrocarbons containing said contaminant metals, said compound having a composition as follows (R*)x Sb... | 03/28/1995 |
| 5389233 | Metals passivation of cracking catalysts A zeolite-containing cracking catalyst is passivated with lithium sulfate and, preferably, at least one additional passivating agent (more preferably at least one antimony compound). The thus-passivated cracking catalyst is employed in a process for catal... | 02/14/1995 |
| 5389592 | Method of enhancing the activity of regenerated catalysts A method of enhancing the activity of a regenerated catalyst for the hydroprocessing of hydrocarbons comprising: (a) applying a modifying element dissolved in a solvent onto the surface of a regenerated catalyst; (b) drying said modified regenerated catalyst t... | 02/14/1995 |
| 5378349 | Passivated catalysts for cracking process A zeolite-containing cracking catalyst is passivated with compounds of (a) antimony and (b) zirconium and/or tungsten. The thus-passivated cracking catalyst is employed in a process for catalytically cracking a hydrocarbon-containing oil feed. In another ... | 01/03/1995 |
| 5358630 | Regenerating zeolitic cracking catalyst A method for countering the adverse effect of contaminating metals on a crystalline aluminosilicate catalyst comprising contacting the catalyst with a reducing gas under suitable conditions. In a preferred embodiment, the catalyst contains antimony.... | 10/25/1994 |
| 5308810 | Method for treating contaminated catalyst A method of treating spent selective catalytic reduction (SCR) catalyst is provided, which method comprises contacting the spent catalyst with a solution comprising a SCR catalyst metal salt, preferably a vanadium salt, and heating the catalyst contacted ... | 05/03/1994 |
| 5300469 | Composition for passivating vanadium in catalytic cracking and preparation thereof Disclosed is a vanadium trap for use in FCC which comprises a major amount of calcined kaolin clay, free magnesium oxide and an in situ formed magnesium silicate cement binder. Also disclosed are procedures for the preparation of the trap by forming a slu... | 04/05/1994 |
| 5275990 | Process for regenerating a spent resid hydroprocessing catalyst using a group IIA metal A method is provided for regenerating a molecular sieve-free resid hydroprocessing catalyst for use with an ebullated bed reaction process comprising at least one hydrogenation metal and at least one Group IIA metal deposited on an inorganic oxide support... | 01/04/1994 |
| 5260240 | Process for the demetallization of FCC catalyst A process is disclosed for passivating the reactivity of contaminant metals, such as nickel and vanadium, which have been deposited on a catalytic cracking catalyst, by adding to the cracking catalyst a mixture of a calcium-containing material and a magne... | 11/09/1993 |
| 5250482 | Process for magnetic beneficiating petroleum cracking catalyst A process for beneficiating a particulate zeolite petroleum cracking catalyst having metal values in excess of 1000 ppm nickel equivalents. The particulate catalyst is passed through a magnetic field in the range of from about 2 Tesla to about 5 Tesla gen... | 10/05/1993 |
| 5232885 | Process for regenerating a spent resin hydroprocessing catalyst using a group IV metal A method of regenerating a contaminant metal-containing, coke deactivated, molecular sieve-free catalyst having at least one hydrogenation metal and at least one Group IV metal deposited on an inorganic oxide support comprising contacting the catalyst wit... | 08/03/1993 |
| 5194411 | Catalyst compositions and process for making the same Catalyst compositions and a process for making the same are disclosed. The composition finds application in the cracking of heavy hydrocarbon feedstock containing vanadium and other metal contaminants. It essentially comprises a crystalline zeolite, a met... | 03/16/1993 |
| 5192724 | Reactivation of spent cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with (a) dissolved lactic acid and either (b1) at least one dissolved calcium compound or, alternatively, (b2) at ... | 03/09/1993 |
| 5188995 | Reactivation and passivation of spent cracking catalysts A spent metal-contaminated zeolite-containing catalytic cracking catalyst is reactivated by a process which comprises contacting the spent catalyst with at least one dissolved carboxylic acid and at least one antimony compound.... | 02/23/1993 |
| 5157006 | Additive and process for vanadium capture in catalytic cracking A catalytic cracking composition comprising a physical blend of a cracking catalyst component with alcohol treated Sr(OH)2 and alcohol is used to crack hydrocarbon-containing feedstocks that further contain quantities of vanadium.... | 10/20/1992 |
| 5154819 | Hydroprocessing using regenerated spent heavy hydrocarbon catalyst The present invention relates to a hydroprocessing process that employs a catalyst that has been regenerated by subjecting the catalyst to an initial partial decoking step, followed by impregnation with a Group IIA metal-containing component and then subj... | 10/13/1992 |
| 5151391 | Reactivation of spent, metal-containing cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with an aqueous solution of HC1 and/or HNO3 and/or H2 SO4. The thus reactivated c... | 09/29/1992 |
| 5141904 | Reactivation of spent cracking catalysts A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting with an aqueous solution of at least one carboxylic acid (preferably at least one of formic acid, acetic acid, cit... | 08/25/1992 |
| 5096568 | Metals passivation A zeolite-containing catalytic cracking catalyst having been passivated by treatment with an aqueous solution which has been prepared by mixing an antimony oxide, ammonium bifluoride and water, at an atomic ratio of F:Sb in excess of about 6:1, is used in... | 03/17/1992 |
| 5057205 | Additive for vanadium and sulfur oxide capture in catalytic cracking A catalytic cracking process especially useful for the catalytic cracking of high metals content feeds including resids in which the feed is cracked in the presence of a catalyst additive comprising an alkaline earth metal oxide and an alkaline earth meta... | 10/15/1991 |
| 5051384 | Method for pretreating a reforming catalyst Supported Group VIII noble metal reforming catalysts are pretreated with an unsaturated aliphatic hydrocarbon at elevated temperatures, thereby lower activity during initial reforming operation and reducing gas production during the initial operation.... | 09/24/1991 |
| 5037786 | Metals passivation-zeolite containing cracking catalysts A zeolite containing catalytic cracking catalyst is passivated by treatment with an aqueous solution which has been prepared by mixing an antimony oxide, ammonium bifluroide and water. The thus-passivated catalyst is used in a process for catalytically cr... | 08/06/1991 |
| 5021145 | Catalyst The invention provides a catalyst composition useful in treating hydrocarbons contaminated with vanadium residues, the catalyst comprising a zeolite, a matrix and certain heavier alkaline earth metal oxides.... | 06/04/1991 |
| 5021377 | Demetallization and passivation of spent cracking catalysts A process for reactivating a spent, metal-contaminated zeolite-containing catalytic cracking catalyst composition comprises partially demetallizing (preferably by chlorinating and washing) the spent catalytic cracking catalyst composition, and thereafter ... | 06/04/1991 |
| 5019241 | Method of passivating alkali metals on fluid catalytic cracking catalysts using aluminum containing compounds In a hydrocarbon fluid catalytic cracking process, high concentrations of sodium in the hydrocarbon entering the reactor will poison the reaction sites on the FCC catalysts, thereby reducing the efficiency of the cracking process. The addition of an alumi... | 05/28/1991 |
| 5001096 | Metal passivating agents The invention describes the preparation of novel cracking catalysts by surface coating conventional cracking catalysts with passivators that act as metals traps. The coating of passivators is weakly bound to the catalyst so as to permit the coating to con... | 03/19/1991 |
| 4997799 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by the addition of at least one rare earth metal, and then subjected to a final decoking... | 03/05/1991 |
| 4994423 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by impregnation with a Group IIA metal-containing component, and then subjected to a fin... | 02/19/1991 |
| 4990240 | Vanadium passivation in a hydrocarbon catalytic cracking process Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a vanadium passivator.... | 02/05/1991 |
| 4986896 | Method for passivating metals on an FCC catalyst A known method for passivating contaminant metals on an FCC catalyst comprises treating the catalyst with a sufficient amount of a sulfur-containing compound capable of associating with the contaminant metals when in contact therewith. An improvement comp... | 01/22/1991 |
