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| Number | Title | Issue Date |
| 8163265 | Mechanically stable catalyst based on alpha-alumina An oxidation process employing a mechanically stable catalyst of an active metal or combination of active metals supported on aluminum oxide, which is predominantly alpha-aluminum oxide, is provided. The active metal or metals is optionally one or a mixture of ruthe... | 04/24/2012 |
| 8158099 | Process for producing chlorine from HCL A process is described for the production of chlorine by a catalysed gas-phase oxidation of hydrogen chloride with an oxygen-containing gas stream. ... | 04/17/2012 |
| 8097232 | Method for producing chlorine A catalytic process for preparing chlorine from hydrogen chloride, which includes recycle of process streams with reduced accumulation of inert gases in the system is provided. The process includes a step wherein a compressed liquid stream comprising chlorine, carbo... | 01/17/2012 |
| 7985395 | Thermally stable catalyst for hydrogen chloride gas phase oxidation Catalyst for oxidation reactions which comprises at least one constituent active in the catalysis of hydrogen chloride oxidation and support therefor, which support is based on uranium oxide. The catalyst is notable for a high stability and activity. ... | 07/26/2011 |
| 7858065 | Process for producing supported ruthenium and process for producing chlorine The present invention provides a process for producing supported ruthenium, which comprises recovering a ruthenium compound from supported ruthenium used as a catalyst in production of chlorine by oxidation of hydrogen chloride with oxygen, and supporting the ruthen... | 12/28/2010 |
| 7713510 | Processes for oxidation of bromides to produce bromine and catalysts useful therein Methods are provided for producing bromine wherein an aqueous solution is formed from at least a bromide source, an oxidant, and a catalyst comprising a Group 1 cation and an oxide of a transition metal. ... | 05/11/2010 |
| 7358211 | Catalyst for the production of 1,3-propanediol by catalytic hydrogenation of 3-hydroxypropanal A process for preparing a catalyst, comprising sequentially: (a) saturating a TiO2 support with aqueous ruthenium solution; (b) treating the ruthenium saturated TiO2 support with an aqueous base solution; and (c) curing the ruthenium saturated ... | 04/15/2008 |
| 7300625 | Chlorine gas generating candle A chlorine gas generating candle in a vented container which serves as a portable means to generate heated chlorine gas for killing insects, bacteria, viruses and other dangerous biological agents. The device has application in sanitizing dwellings, swimming pools a... | 11/27/2007 |
| 7030053 | Catalyst composition comprising ruthenium and a treated silica support component and processes therefor and therewith for preparing high molecular weight hydrocarbons such as polymethylene A catalyst composition and a process of using a catalyst composition for preparing high molecular weight hydrocarbons, such as polymethylene, from a fluid containing hydrogen and carbon monoxide are disclosed. The catalyst composition contains ruthenium and a treate... | 04/18/2006 |
| 6977066 | Method for producing chlorine A process for producing chlorine comprising the step of oxidizing hydrogen chloride in a gas containing hydrogen chloride with a gas containing oxygen in the presence of a catalyst, wherein the oxidation of hydrogen chloride is carried out in at least two reaction z... | 12/20/2005 |
| 6962682 | Fixed-bed process for producing chlorine by catalytic gas-phase oxidation of hydrogen chloride A process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride over a fixed catalyst bed is disclosed that includes: making available a feed gas stream I with hydrogen chloride and an oxygen-containing feed gas stream II, feeding the feed gas... | 11/08/2005 |
| 6933417 | Process for vinyl chloride manufacture from ethane and ethylene with partial CHl recovery from reactor effluent A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the... | 08/23/2005 |
| 6852667 | Process for producing chlorine A process for producing chlorine by oxidizing hydrogen chloride with oxygen. The process uses various supported ruthenium catalysts or a catalyst system containing (A) an active component of a catalyst and (B) a compound having thermal conductivity of a solid phase ... | 02/08/2005 |
| 6827856 | Process for the recovery of copper from aqueous solutions containing iodinated organic compounds The present invention relates to a process for recovering copper from solutions from the recovery of iodine from industrial wastes from the production of ionic and non-ionic iodinated X-ray contrast agents by use of chelating resins suitable for removing copper from... | 12/07/2004 |
| 6803474 | Mn4O4-cubane type catalysts Highly reactive, stable tetramanganese-oxo cubane complexes, their synthesis and their use as a functional catalyst for in vitro O2 production. Preferred complexes are i) a tetramanganese-oxo cubane complex having the formula L6Mn4O | 10/12/2004 |
| 6770255 | Process for chlorine recovery The specification discloses a process for recovering chlorine from a chlorinator waste. The process involves treating the chlorinator waste with oxygen in a fluidised bed under conditions which promote the conversion of metal chlorides to metal oxides and discourage... | 08/03/2004 |
| 6713035 | Process for producing chlorine A process for producing chlorine comprising the step of oxidizing hydrogen chloride in a gas containing hydrogen chloride with a gas containing oxygen in a fixed bed reaction system having a reaction zone comprising a catalyst-packed layer, wherein a superficial lin... | 03/30/2004 |
| 6602419 | Process for the recovery of iodine from aqueous solutions containing iodinated organic compounds A process for the recovery of iodine from mother liquors or wastes containing iodinated organic compounds, by mineralisation of organic iodine and subsequent transformation of the formed iodide into elementary iodine, characterized in that the aqueous sol... | 08/05/2003 |
| 6387345 | Process for working up reaction gases during the oxidation HCI to chlorine In the process for working up the reaction gas consisting of chlorine, hydrogen chloride, oxygen and water vapour produced in a chlorine reactor, the reaction gas leaving the reactor 1 is first cooled until the water of reaction and hydrogen chloride cond... | 05/14/2002 |
| 6197275 | Bismuth-containing catalysts The active phase of a catalyst composition contains at least one bismuth oxide compound in which bismuth is present at least partly in oxidation state +5, the bismuth oxide compound furthermore containing at least one basic metal component stabilizing the... | 03/06/2001 |
| 6071488 | Use of metal oxychlorides for removal of hydrogen chloride from mixed gases A process for producing chlorine comprises the steps of oxidizing hydrogen chloride in the presence of a catalyst in an oxidation reactor, passing the product gas together with the catalyst removed from the oxidation reactor to a high velocity transporter... | 06/06/2000 |
| 5961942 | Effluent gas treatment Process for removing organic constituents from a high pressure exhaust gas stream in a bromine assisted air oxidation process in which the exhaust gas contains methyl bromide.... | 10/05/1999 |
| 5908607 | Process for producing chlorine A process for producing chlorine by oxidizing hydrogen chloride with oxygen, which comprises using at least one catalyst selected from the group consisting of a supported ruthenium chloride catalyst, a catalyst obtained by supporting at least one rutheniu... | 06/01/1999 |
| 5871707 | Process for producing chlorine The present invention provides a process for producing chlorine by oxidation of hydrogen chloride with oxygen which process comprises using a ruthenium catalyst.... | 02/16/1999 |
| 5830427 | Metallochalcogenide microporous compositions having metal-metal bonds This invention relates to dimetal sulfide or selenide microporous crystalline compositions. These compositions have the empirical formula Rx (M1+y M2+z M4)Aq where R is a cation such as te... | 11/03/1998 |
| 5783684 | Oxidizing reagent for use in oligonucleotide synthesis Oxidizing compositions particularly for use in automated oligonucleotide synthesis containing a mixture of KI and I2 in solution, in equilibrium with KI3. One preferred composition contains 1.75% KI3 (providing 0.69% KI a... | 07/21/1998 |
| 5716592 | Cerous chloride-chromic oxide catalyst for producing chlorine, methods for producing the same and a method for producing chlorine A process for producing chlorine by reaction of gaseous hydrogen chloride with oxygen in the presence of a catalyst prepared by reaction of chromium trioxide and cerous chloride with ethanol and calcination of the resulting reaction product, or, alternati... | 02/10/1998 |
| 5707919 | Catalyst for preparing chlorine from hydrogen chloride A method for preparing an improved catalyst for use in the preparation of chlorine by the oxidization of hydrogen chloride with an oxygen-containing gas. The catalyst mainly comprises chromium oxide and can be used for a long period of time particularly u... | 01/13/1998 |
| 5660810 | Method and device for delivering hot, aggressive media In the method for the chemical reaction of gaseous educts the educts are brought to reaction in a phase contact apparatus 1 in the presence of a catalytically active corrosive liquid. This corrosive liquid is delivered hydropneumatically in an intermitten... | 08/26/1997 |
| 5639436 | Exothermic two-stage process for catalytic oxidation of hydrogen chloride A process of recovering chlorine from a stream of hydrogen chloride comprising the steps of exothermically reacting a stream of hydrogen chloride and oxygen with a fluidized bed of a carrier catalyst containing cupric oxide and cupric chloride in a reacti... | 06/17/1997 |
| 5552076 | Anhydrous amorphous ceramics as the particulate phase in electrorheological fluids An electrorheological fluid that includes a dispersed particulate phase of anhydrous amorphous ceramic particles. The anhydrous amorphous ceramic particles can be of a very precisely tailored composition that is unavailable in crystalline form, for obtain... | 09/03/1996 |
| 5366949 | CeBr3 catalyst This invention is a catalyst and a process using that catalyst for oxidizing hydrogen bromide to form elemental bromine. The inventive catalyst composition comprises cerium bromide on certain zirconia containing supports. The zirconia support, preferably ... | 11/22/1994 |
| 5356611 | Method of recovering iodine A method for recovering iodine from a composition containing iodine and/or iodide in which any iodine present is first reduced to iodide, the iodide is then separated from solution by selective anion exchange absorption, the separated iodide is eluted fro... | 10/18/1994 |
| 5266295 | Hydrogen peroxide oxidation of bromide to bromide Hydrogen bromide can be oxidized to bromine more effectively using hydrogen peroxide as the oxidant if a strong acid (e.g., sulfuric or phosphoric acid) is also present to increase the percent conversion of bromide to bromine.... | 11/30/1993 |
| 5154911 | Efficient method for the chemical production of chlorine and the separation of hydrogen chloride from complex mixtures A process for the efficient production of Cl2 from gaseous HCl, using a catalyst containing a transition metal oxide, an alkali metal chloride, and, optionally, a trivalent rare earth chloride, operates efficiently at moderate temperatures and ... | 10/13/1992 |
| 5147624 | Production process of chlorine Chlorine can be efficiently produced at a low temperature and with a high hourly space velocity by oxidizing hydrogen chloride with an oxygen-containing gas in the presence of a catalyst obtained by calcining a compound, which has in turn been obtained by... | 09/15/1992 |
| 5112593 | Production process of chlorine Chlorine is produced by reacting hydrogen chloride and oxygen in the presence of a catalyst composed of a chromium oxide as a principal component. The reaction is carried out in a fluidized bed reactor equipped at vertical intervals not greater than 100 c... | 05/12/1992 |
| 5093292 | Chromium oxide catalyst impregnation regeneration method The catalytic activity of a chromium oxide-based catalyst used in the production of chlorine by oxidation of hydrogen chloride gas with an oxygen-containing gas is regenerated by impregnating it with an aqueous solution of chromic acid anhydride or of a c... | 03/03/1992 |
| 5084264 | Process for oxidation of hydrogen halides to elemental halogens An improved process for generating an elemental halogen selected from chlorine, bromine or iodine, from a corresponding hydrogen halide by absorbing a molten salt mixture, which includes sulfur, alkali metals and oxygen with a sulfur to metal molar ratio ... | 01/28/1992 |
| 5034209 | Production process of chlorine Chlorine is produced by reacting hydrogen chloride and oxygen in the presence of a chromium oxide catalyst in a reactor whose catalyst-contacting part is lined with one of lining materials represented by the following general formula(I): Ma X | 07/23/1991 |
