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| Number | Title | Issue Date |
| 4163709 | Catalyst demetallization by oxidation in a defined temperature range In a catalytic cracking process wherein the cracking catalyst is poisoned and contaminated by metal present in the feedstock, an improved process for the removal of such metal poisons as nickel, iron and/or vanadium is employed which comprises contacting ... | 08/07/1979 |
| 4132569 | Ruthenium recovery process Ruthenium is stripped from a catalyst or electrode substrate by immersion in a fluoboric acid solution, converted to ruthenium oxide, and the ruthenium oxide is then converted to the alpha ruthenium trichloride for use in the preparation of fresh catalyst... | 01/02/1979 |
| 4125550 | Removal of free fatty acids from water immiscible fluids via ion exchange resins Certain anion exchange resins are used for the removal of free fatty acids from water immiscible fluids. This anion exchange system can function without the necessity of organic solvents and with the resin in a hydrous state.... | 11/14/1978 |
| 4120819 | Method for platinum or palladium catalyst reactivation Palladium or platinum catalyst values poisoned in course of catalyzing the reductive alkylation of an acid hydrazide are essentially completely reactivated by treating the spent catalyst values with a dilute aqueous solution of a lower monocarboxylic acid... | 10/17/1978 |
| 4118339 | Use of noble metal solutions in catalyst regeneration zones The use of a solution in a catalyst regeneration zone to increase the CO2 /CO ratio of the flue gas produced in the regeneration zone comprising a noble-metal CO oxidation promoter and a solvent comprising a selected saturated aliphatic alcohol... | 10/03/1978 |
| 4102811 | Catalyst demetallization by oxidation in a defined temperature range A process for the removal of metal poisons such as nickel, iron and/or vanadium from a hydrocarbon conversion catalyst which includes the steps of contacting a regenerated sulfided catalyst with an oxygen-containing gas in a defined temperature range of f... | 07/25/1978 |
| 4096198 | Integrated process for regenerating fluorosulfuric acid catalyst An integrated process for regenerating a deactivated or partially deactivated alkylation catalyst comprising fluorosulfuric acid which comprises: (1) contacting said fluorosulfuric acid with water to form an acid-water mixture, thereby converting at least... | 06/20/1978 |
| 4072628 | Regeneration of supported ruthenium catalyst Regeneration of supported ruthenium catalysts. A supported ruthenium catalyst which has been used for conversion of carbohydrates to polyhydric alcohols is regenerated by contacting the catalyst with an aqueous solution of a mineral acid, such as sulfuric... | 02/07/1978 |
| 4071576 | Process for regenerating fluorosulfuric acid catalyst The deactivated fluorosulfuric acid catalyst in olefin-paraffin alkylation is regenerated by (1) contacting the acid phase with water to form an acid-water mixture (2) stripping the acid-water mixture with a paraffin to form a gaseous phase of hydrogen fl... | 01/31/1978 |
| 4061687 | Oxo process with recovery of cobalt hydrocarbonyl in solution for recycle Method for the recovery of cobalt as cobalt hydrocarbonyl from a water mono- or diacid, cobalt salt solution which is obtained from the cobalt removal from oxo alcohols, preferably after the addition of higher olefins. These solutions are treated with car... | 12/06/1977 |
| 4052332 | Catalyst regeneration with impregnation of bismuth and molybdenum Process for regenerating a spent catalyst, which catalyst contains potassium, cobalt, nickel, iron, bismuth, phosphorus and molybdenum and sufficient oxygen to satisfy the valence of the other elements therein, on a support, e.g. silicon oxide, wherein at... | 10/04/1977 |
| 4048092 | Catalytic mixture and method of use therefor A pressurized aerosol package contains a metal-containing catalytic mixture of the type used in catalytic heaters. The mixture could contain, for example, chloroplatinic acid, with other materials, such as aluminum oxide, dextrose and triethanolamine all ... | 09/13/1977 |
| 4038301 | Removal and recovery of organolead compounds from activated carbon and recovery of the activated carbon Disclosed is a method of recovering organolead compounds from solid porous activated carbonaceous materials. According to the disclosed method, an activated carbonaceous material having organolead compounds deposited therein is contacted with an extractin... | 07/26/1977 |
| 4021463 | Regeneration and separation of rhodium-containing or iridium-containing catalysts from distillation residues following hydroformylation Regeneration and separation of catalysts Me(CO)(PR3)2 Hal(I) and HMe(CO)(PR3)3 (II), where Me is rhodium or iridium, Hal is halogen and R denotes the same or different hydrocarbon radicals, from distillation res... | 05/03/1977 |
| 3985854 | Recovery of PT/RH from car exhaust catalysts In order to recover platinum, rhodium and other precious metals from catalysts employed in internal combustion engine exhaust systems, the used or unused catalysts, preferably in crushed, powdered or broken form, are reacted with an acidic medium having o... | 10/12/1976 |
| 3966635 | Process for reactivating platinum catalysts used in production of hydroxylammonium salts A process for reactivating platinum catalysts is disclosed. It comprises treating a platinum catalyst having reduced activity and selectivity A. in a first stage with an acid solution of a sulfur compound which liberates sulfurous acid in acid medium, and a hy... | 06/29/1976 |
| 3965037 | Method for reactivating carbon A method for reactivating carbon beds is provided which is applicable to carbon beds used in filtering water recovered from sewage. The method involves first adding hydrochloric acid to the bed containing some of the water. The water and hydrochloric acid... | 06/22/1976 |
| 3933681 | Activation of copper salt phenol oxidation catalysts A method of activating inactive copper salt catalysts for phenol oxidation by the addition of acid.... | 01/20/1976 |
