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| Number | Title | Issue Date |
| 7431902 | Separation of ammonia from sulfur compounds A method for separating ammonia and sulfides from a sour water stream is disclosed. The stripping of a sour water stream where it is stripped to create a sour water stripper overhead gas and then contacted with an alkali hydroxide in order to separate ammonia and ma... | 10/07/2008 |
| 7329399 | Hydrogen trapper compound, method for the production and uses thereof A hydrogen-trapping compound is provided, along with a process for manufacturing the compound, and its uses, wherein the hydrogen-trapping compound is characterized in that it contains at least one metal salt of formula MX(OH), in which M represents a divalent trans... | 02/12/2008 |
| 7101527 | Mixed anion materials and compounds for novel proton conducting membranes The present invention provides new amorphous or partially crystalline mixed anion chalcogenide compounds for use in proton exchange membranes which are able to operate over a wide variety of temperature ranges, including in the intermediate temperature range of abou... | 09/05/2006 |
| 7018604 | Compounds for novel proton conducting membranes and methods of making same The present invention provides new compounds for use in proton exchange membranes which are able to operate in a wide variety of temperature ranges, including in the intermediate temperature range of about 100° C. to 700° C., and new and improved methods of making... | 03/28/2006 |
| 6833127 | Method of removing structure directing agents from molecular sieves A structure directing agent is removed from a microporous solid at a temperature below the temperature that would cause the structure directing agent to decompose by cleaving the structure directing agent within the pores of the microporous solid, at a temperature b... | 12/21/2004 |
| 6503473 | Process for separating solid compound other than lithium hydroxide A process for separating a solid compound other than lithium hydroxide, such as sodium chloride, in which lithium hydroxide is hydrosulfurized by bubbling gaseous hydrogen sulfide through an aprotic solvent, such as a polar organic compound, containing li... | 01/07/2003 |
| 5872073 | Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith New amorphous molybdenum/tungsten sulfides with the general formula Mn+2x/n (L6 S8)Sx, where L is molybdenum or tungsten and M is a ternary metal, has been developed. Characterization of these amorpho... | 02/16/1999 |
| 5738758 | Process for the conversion of calcium sulfide The disclosure relates to a process for the removal of solid CaS from a gas stream in which the CaS has been formed and then the conversion of that solid CaS by reaction with an aqueous NaOH solution to produce solid Ca(OH)2 and a liquor stream... | 04/14/1998 |
| 5328677 | Recovery of sulfides from tannery waste liquor An apparatus and process for the removal and recovery of sulfides from tannery waste water or liquor. The apparatus comprises a closed vessel, the sulfide-bearing liquor is introduced into a first or acidulation zone of the vessel and mixed with acid to d... | 07/12/1994 |
| 4728682 | Metal ternary sulfides Metal ternary sulfides of the general formula MM'2 S4 are synthesized by introducing stoichiometric amounts of nitrate precursors in concentrated nitric acid and heating to approximate dryness to yield a homogeneous powder mixture. T... | 03/01/1988 |
| 4584118 | Metal trithiocarbonates as depressants Metal trithiocarbonates such as Na2 CS3 are useful depressant for such sulfided minerals as copper and iron sulfides in molybdenum recovery.... | 04/22/1986 |
| 4441923 | Integrated process using non-stoichiometric sulfides or oxides of potassium for making less active metals and hydrocarbons Disclosed is a combinative integrated chemical process using inorganic reactants and yielding, if desired, organic products. The process involves first the production of elemental potassium by the thermal or thermal-reduced pressure decomposition of potas... | 04/10/1984 |
| 4439411 | Production of sodium hydrosulfide Sodium hydrosulfide is continuously produced from the reaction of hydrogen sulfide and with sodium sulfide by continuously introducing an aqueous sodium sulfide solution into an unvented reaction chamber, which may be a tower or tank, while maintaining a ... | 03/27/1984 |
| 4395385 | Process for removing hydrogen sulfide from sour gas streams A process for removing hydrogen sulfide from a sour gas stream wherein the sour gas stream is contacted with an aqueous alkali metal hydroxide solution containing a stoichiometric excess of the alkali metal hydroxide to provide a sweet gas substantially f... | 07/26/1983 |
| 4156656 | Preparation of hydrosulfides Hydrosulfides of sodium, potassium, calcium, barium and strontium are prepared by reaction of the oxide or hydroxide of the metal with sulfur in aqueous medium at elevated temperature and pressure.... | 05/29/1979 |
| 4123350 | Process for desulfurization of residua with sodamide-hydrogen and regeneration of sodamide Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatu... | 10/31/1978 |
| 4120779 | Process for desulfurization of residua with sodamide-hydrogen and regeneration of sodamide Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatu... | 10/17/1978 |
| 4119528 | Hydroconversion of residua with potassium sulfide A process for the simultaneous desulfurization and hydroconversion of heavy carbonaceous feeds, including various sulfur-containing heavy petroleum oils, is disclosed. These feedstocks are contacted with potassium sulfide in a conversion zone maintained a... | 10/10/1978 |
| 4117099 | Hydrosulfide-groups containing multi-metal inorganic polymeric complex and method of making same Novel water soluble inorganic multi-metal polymeric complexes are obtained by reacting, in the presence of a sulfur containing compound convertable to hydrosulfide groups under the conditions prevailing in the aqueous reaction medium, at least one non-alk... | 09/26/1978 |
| 4108969 | Process for the removal of SO2 from a stack gas, absorptive medium for use in process and process for preparing the absorptive medium A stack gas, generally from a sulfuric acid plant, containing SO2, is contacted with an absorptive medium prepared by wetting at least the surface of a first metal selected from aluminum, magnesium and manganese with a second metal selected fro... | 08/22/1978 |
| 3941875 | Process for treating gas containing hydrogen sulfide A process for treating a hydrogen sulfide-containing gas in a closed loop system wherein said gas is passed through and absorbed by an alkaline aqueous absorbent containing an alkali carbonate and an oxidation catalyst. The solution containing the dissolv... | 03/02/1976 |
