method synthesizing pollucite

  • Method for synthesizing pollucite from chabazite and

    The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, nonaqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700degree C The method further comprises significantly improving the rate of retention ofThe method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, nonaqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700 C The method further comprises significantly improving the rate of retention of cesiumMethod for synthesizing pollucite from chabazite andA method for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method for immobilizing waste chloride salts containing cesium, in a synthetic form of pollucite The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, nonA method for synthesizing pollucite from chabazite and

  • A METHOD FOR SYNTHESIZING POIXXJCITE FROM

    A need exists for a method for immobilizing cesium for long term storage by incorporating the cesium into synthetic pollucite which overcomes the problems experienced in the prior art The present method is a simple, one step conversion process for synthesizing pollucite that eliminates the need for aqueous ion exchange and/or hydrothermalThe method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, nonaqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700 C The method further comprises significantly improving the rate of retention of cesiumA method for synthesizing pollucite from chabazite andThe invention relates to a method for lowtemperature synthesis of pollucite The method comprises the following steps: adding analytically pure cesium hydroxide sold on market to water so as to prepare a cesium hydroxide solution which is 14M mole in concentration, dissolving analytically pure amorphous SiO2 and Al powder sold on market in the cesium hydroxide solution, and completelyCNA Method for lowtemperature synthesis of

  • Synthesis of pollucite with Cspolluted incineration ash

    Therefore, to further reduce the basis materials (reagents), there exists a challenge in synthesizing pollucite only with Cspolluted materials (without any other reagents) for Cs immobilization For the case in Fukushima (Japan), ie, huge amounts of Cspolluted incineration ashes and soils produced, the best way is to find a new method toA simple method for preparing a pollucite 137 Cs γray source pellet is presented An original pellet forming commercial synthetic (NH 4 Na)A zeolite is calcined at 600°C for 2 h, and impregnated with 137 CsNO 3 solution of appropriate radioactive concentration, followed by heating at 1100°C for 2 h, for synthesizing the pollucite and sintering the source pelletA simplified method for preparation of 137Cs pollucite γFor pollucite synthesis, however, the synthesis temperature is rather high (⩾1200 °C) , now, and thus Cs evaporates and equipment corrodes readily According to the geological evolution, pollucite converts into clay minerals and finally weathers to soil via analcimization in adaptable situations , This suggests that it has a potential toMild hydrothermal synthesis of pollucite from soil for

  • Hydrothermal conversion of Cspolluted soil into pollucite

    Pollucite, which possesses a high cesium content and good thermal stability , , , is considered to be a promising material for cesium immobilization Pollucite is synthesized via a sintering method at approximately 1000 °C in air , , and as a result, radioactive materials volatilize and the equipment is easily corroded A low temperatureTherefore, to further reduce the basis materials (reagents), there exists a challenge in synthesizing pollucite only with Cspolluted materials (without any other reagents) for Cs immobilization For the case in Fukushima (Japan), ie, huge amounts of Cspolluted incineration ashes and soils produced, the best way is to find a new method toSynthesis of pollucite with Cspolluted incineration ashFor pollucite synthesis, however, the synthesis temperature is rather high (⩾1200 °C) , now, and thus Cs evaporates and equipment corrodes readily According to the geological evolution, pollucite converts into clay minerals and finally weathers to soil via analcimization in adaptable situations , This suggests that it has a potential toMild hydrothermal synthesis of pollucite from soil for

  • A simplified method for preparation of 137Cs pollucite γ

    A simple method for preparing a pollucite 137 Cs γray source pellet is presented An original pellet forming commercial synthetic (NH 4 Na)A zeolite is calcined at 600°C for 2 h, and impregnated with 137 CsNO 3 solution of appropriate radioactive concentration, followed by heating at 1100°C for 2 h, for synthesizing the pollucite and sintering the source pelletA method for immobilizing waste chlorides salts containing radionuclides and hazardous nuclear material for permanent disposal, and in particular, a method for immobilizing waste chloride salts containing cesium, in a synthetic form of pollucite The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, nonMethod of removing cesium from steam (Patent) | DOEPollucite, which possesses a high cesium content and good thermal stability , , , is considered to be a promising material for cesium immobilization Pollucite is synthesized via a sintering method at approximately 1000 °C in air , , and as a result, radioactive materials volatilize and the equipment is easily corroded A low temperatureHydrothermal conversion of Cspolluted soil into pollucite

  • Factors affecting the hydrothermal synthesis and

    Waste forms in which Cs was immobilized in pollucite structure were successfully produced by the hydrothermal hotpressing method using the silica matrix (mixture of lowquartz and amorphousA novel hydrothermal method was developed to directly convert Cspolluted incineration ash (rice husk ash) into pollucite to immobilize Cs in its crystal structure in situA novel method to convert Cspolluted soil into polluciteThe formation of defect pollucite crystals of close appearance was reported by Fan et al [31] when synthesizing pollucite from clay minerals It can be assumed that the high Cs concentration isHydrothermal synthesis of rock to immobilise nuclide Cs

  • Safe trapping of cesium into dopingenhanced pollucite

    Safe trapping of radioactive nuclear waste such as 137 Cs has become a grim issue with the popularity of nuclear power and the growing yield of nuclear waste To address this intractable problem, pollucite has been screened out as an ideal material for the longterm storage of 137 Cs due to its low leaching rate and good chemical and thermal stabilityMethods of making Synthetic Gemstones The FlameFusion Process The Verneuil oven, which made possible the synthesis of large, fine crystals of ruby and sapphire, consists essentially of a type of blowpipe that is inverted in such a manner that the flame is directed downwardMethods of making Synthetic Gemstonescalcium carbonate manufacturing method in quarry in castleville beneficiation process of copper ore 3a blastingmethod synthesizing pollucite 5 stihlkerhartcz

  • Factors affecting the hydrothermal synthesis and

    Waste forms in which Cs was immobilized in pollucite structure were successfully produced by the hydrothermal hotpressing method using the silica matrix (mixture of lowquartz and amorphousPollucite, which possesses a high cesium content and good thermal stability , , , is considered to be a promising material for cesium immobilization Pollucite is synthesized via a sintering method at approximately 1000 °C in air , , and as a result, radioactive materials volatilize and the equipment is easily corroded A low temperatureHydrothermal conversion of Cspolluted soil into polluciteA static leaching test for 28 d confirmed the excellent chemical resistance of the pollucite structure, with a Cs leaching rate as low as 721×105gm2/d This simple scheme of waste processing promises a new route for radioactive Cs immobilization by synthesizing pollucitebased monolithsA new route to the stable capture and final immobilization

  • Hydrothermal synthesis of rock to immobilise nuclide Cs

    The formation of defect pollucite crystals of close appearance was reported by Fan et al [31] when synthesizing pollucite from clay minerals It can be assumed that the high Cs concentration isMethod for synthesizing pollucite from chabazite and cesium chloride Candido; A method for immobilizing waste chlorides salts containing radionuclidesPreliminary results of modeling studies on washout ofSafe trapping of radioactive nuclear waste such as 137 Cs has become a grim issue with the popularity of nuclear power and the growing yield of nuclear waste To address this intractable problem, pollucite has been screened out as an ideal material for the longterm storage of 137 Cs due to its low leaching rate and good chemical and thermal stabilitySafe trapping of cesium into dopingenhanced pollucite

  • Cesium titanium silicate and method of making Battelle

    The invention is the new material, a ternary compound of cesium, silica, and titania, together with a method of making the ternary compound, cesium titanium silicate pollucite More specifically, the invention is Cs 2 Ti 2 Si 4 O 13 pollucite which is a new crystalline phase representing a novel class of Ticontaining zeolitesMethods of making Synthetic Gemstones The FlameFusion Process The Verneuil oven, which made possible the synthesis of large, fine crystals of ruby and sapphire, consists essentially of a type of blowpipe that is inverted in such a manner that the flame is directed downwardMethods of making Synthetic GemstonesHollowstructured pollucite microspheres and the formation mechanism Microporous and Mesoporous Materials 20190701 Solvothermal synthesis method for dualphase Li4Ti5O12/TiO2 composites for highstability lithium storage SCI收录(WOS 赵启航swust

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