method synthesizing pollucite

A method for synthesizing pollucite from chabazite and ...

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700gree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a

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Method for synthesizing pollucite from chabazite and ...

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous 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 cesium in ceramic products comprised of a salt-loaded ...

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Method for synthesizing pollucite from chabazite and ...

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700gree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a

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Method for synthesizing pollucite from chabazite and ...

US-5875407-A chemical patent summary.

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A METHOD FOR SYNTHESIZING POIXXJCITE FROM CHA.BAZITE

The present method for synthesizing pollucite includes mixing dry, non-aqueous cesiurn chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride (approximately 680”C), 15 or above about 700”C, The unexpected and surprising result is that pollucite forms in the presence of the chloride ion. In particular, the chloride ...

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CN105731899A - Method for synthesizing pollucite by

Method for synthesizing pollucite by means of aluminosilicate polymer Download PDF Info Publication number CN105731899A. CN105731899A CN201610081478.0A CN201610081478A CN105731899A CN 105731899 A CN105731899 A CN 105731899A CN 201610081478 A CN201610081478 A CN 201610081478A CN 105731899 A CN105731899 A CN 105731899A Authority CN China Prior art keywords pollucite

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Method for synthesizing pollucite from chabazite and ...

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700gree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a

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Method for synthesizing pollucite from chabazite and ...

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US5875407A - Method for synthesizing pollucite from ...

A 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, non-aqueous cesium chloride with chabazite and heating ...

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A METHOD FOR SYNTHESIZING POIXXJCITE FROM CHA.BAZITE

The present method for synthesizing pollucite includes mixing dry, non-aqueous cesiurn chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride (approximately 680”C), 15 or above about 700”C, The unexpected and surprising result is that pollucite forms in the presence of the chloride ion. In particular, the chloride ...

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Method for synthesizing pollucite from chabazite and ...

US-5875407-A chemical patent summary.

More

Method for synthesizing pollucite from chabazite and ...

Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more.

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Method for synthesizing pollucite from chabazite and ...

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700gree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a

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CN104477934A - Method for low-temperature synthesis

The invention relates to a method for low-temperature 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 1-4M mole in concentration, dissolving analytically pure amorphous SiO2 and Al powder sold on market in the cesium hydroxide solution, and completely ...

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Development of a Chemical Process for Production of

The method for synthesizing pollucite from chabazite and cesium chloride includes mixing dry, non-aqueous cesium chloride with chabazite and heating the mixture to a temperature greater than the melting temperature of the cesium chloride, or above about 700gree. C. The method further comprises significantly improving the rate of retention of cesium in ceramic products comprised of a

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A simplified method for preparation of 137Cs pollucite

01/08/1981  A simple method for preparing a pollucite 137Cs γ-ray source pellet is presented. An original pellet forming commercial synthetic (NH4 Na)A zeolite is

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Preparation of pollucite ceramics - CORNING INC

The present invention is directed to a method for synthesizing highly crystalline pollucite articles at temperatures not exceeding 1650 DEG C. The method comprises two general steps: (a) a glass frit is prepared having a composition varying from approximately the stoichiometry of Cs2O.2SiO2 to approximately the stoichiometry of Cs2O.4SiO2 with, optionally, up to 5% Al2O3; and (b) that glass ...

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Preparation of pollucite ceramics - Corning Incorporated

The present invention is directed to a method for synthesizing highly crystalline pollucite articles at temperatures not exceeding 1650° C. The method comprises two general steps: (a) a glass fri

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CN104477934A - Method for low-temperature synthesis

The invention relates to a method for low-temperature 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 1-4M mole in concentration, dissolving analytically pure amorphous SiO2 and Al powder sold on market in the cesium hydroxide solution, and completely ...

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A simplified method for preparation of 137Cs pollucite

01/08/1981  A simple method for preparing a pollucite 137Cs γ-ray source pellet is presented. An original pellet forming commercial synthetic (NH4 Na)A zeolite is

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Synthesis of pollucite with Cs-polluted incineration ash ...

A novel hydrothermal method therefore has been developed to directly synthesize pollucite only with Cs-polluted incineration ash and soil to immobilize Cs. The results revealed that pollucite could be synthesized with a wide range of mixing ratios between incineration ash (PA) and soil (kaolin) even at a lower temperature (≥140 °C) for a shorter time (≥3 h), and however a higher ...

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Cenosphere-sourced hydrothermal synthesis of pollucite ...

15/04/2020  Because of the largest contribution of radioisotope 137 Cs to the waste activity, the development of low-temperature methods to synthesize the 137 Cs host phases, first of all, pollucite CsAlSi 2 O 6 is of great practical significance. Pollucite can accommodate more than 40 wt % Cs into its structure and, as a result, will produce a highly dense waste form with significant cost-savings due to ...

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Final storage of radioactive cesium by pollucite ...

At that time, this method only requires calcium hydroxide, water, and three hours of hydrothermal synthesis, so the process is both inexpensive and practical for large-scale application. Pollucite is an analog of analcime zeolite, and contains a channel system 2.8 Å in diameter, which is formed by 6-oxygen rings. As the diameter of Cs(+) is 3.34 Å and each Cs(+) exists independently within a ...

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Mild hydrothermal synthesis of pollucite from soil for ...

Request PDF Mild hydrothermal synthesis of pollucite from soil for immobilization of Cs in situ and its characterization To deal with a huge amount of Cs-polluted soil produced from the first ...

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A simplified method for preparation of 137Cs pollucite γ ...

A simple method for preparing a pollucite 137Cs γ-ray source pellet is presented. An original pellet forming commercial synthetic (NH4 Na)A zeolite is calcined at 600°C for 2 h, and impregnated with 137CsNO3 solution of appropriate radioactive concentration, followed by heating at 1100°C for 2 h, for synthesizing the pollucite and sintering the source pellet.

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Safe trapping of cesium into doping-enhanced pollucite ...

05/04/2019  Various methods of fabricating pollucite have been studied. For example, MacLaren and Bosch ... This contribution is aimed at: (1) Synthesizing pollucite from Cs-based, (Li, Cs)-based, (Na, Cs)-based and (K, Cs)-based geopolymer materials at relatively low temperature (≤ 1000 °C, lower than the evaporation temperature of Cs). (2) Investigating the effects of alkali metal ions (i.e., Li ...

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Final storage of radioactive cesium by pollucite ...

Pollucite was synthesized at 300uC in 3 hours by hydrothermal synthesis, and the hydrothermal pressure was about 8.5 MPa. Pollucite was also synthesized in 3

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Incorporation Behavior of Cesium into Pollucite and the ...

of Synthesis Method Haruka NOBUTA1*, Yujiro WATANABE2, Syunichi OSHIMA1, Yu KOMATSU1 ... Incorporation Behavior of Cesium into Pollucite and the Optimization of Synthesis Method Haruka NOBUTA1*, Yujiro WATANABE2, Syunichi OSHIMA1, Yu KOMATSU1 and Kaoru FUJINAGA1 collapses 1 College of Bioscience and Chemistry, Kanazawa Institute of Technology, 3-1 Yatsukaho, Hakusan,

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