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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 18. Отображено 18.
15-06-2017 дата публикации

TREATMENT METHOD FOR RADIOACTIVE WASTE LIQUID COMPRISING RADIOACTIVE CESIUM AND RADIOACTIVE STRONTIUM

Номер: WO2017099099A1
Принадлежит:

In the present invention, waste liquid comprising radioactive cesium and radioactive strontium is fed, at a flow linear velocity (LV) of 1 m/h to 40 m/h inclusive and a space velocity (SV) of no higher than 200 h-1, through an adsorption tower filled to a layer height of 10 cm to 30 cm inclusive with a particulate adsorbent having a particle size of 250 μm to 1200 μm inclusive. The adsorbent includes: at least one crystalline silicotitanate selected from the crystalline silicotitanates represented by general formulas Na4Ti4Si3O16⋅nH2O, (NaxK(1-x))4Ti4Si3O16⋅mH2O, and K4Ti4Si3O16⋅lH2O (in the formulas, x indicates a number that is greater than 0 but less than 1, and n, m, and l each indicate a number from 0 to 8); and at least one titanate selected from the titanates represented by general formulas Na4Ti9O20⋅qH2O, (NayK(1-y))4Ti9O20⋅rH2O, and K4Ti9O20⋅tH2O (in the formulas, y indicates a number that is greater than 0 but less than 1, and q, r, and t each indicate a number from 0 to 10).

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01-10-2015 дата публикации

ADSORBENT AND METHOD FOR MANUFACTURING CRYSTALLINE SILICOTITANATE

Номер: WO2015146962A1
Принадлежит:

The purpose of the present invention is to provide an adsorbent having excellent ability to adsorb and remove Cs and Sr, even in seawater; and a method for manufacturing crystalline silicotitanate suitable as the adsorbent. This absorbent includes at least one of crystalline silicotitanates represented by Na4Ti4Si3O16·nH2O, (NaxK(1-x))4Ti4Si3O16·nH2O and K4Ti4Si3O16·nH2O (where x indicates a number greater than zero but less than 1, and n indicates 0 to 8), and at least one of titanates represented by Na4Ti9O20}·mH2O, (NayK(1-y))4Ti9O20·mH2O and K4Ti9O20·mH2O (y indicates a number greater than zero but less than 1, and m indicates 0 to 10). The adsorbent is suitably manufactured by a method for manufacturing crystalline silicotitanate, which involves mixing a silicic acid source, a sodium and/or potassium compound, titanium tetrachloride, and water to obtain a mixed gel, and subjecting the mixed gel to a hydrothermal reaction.

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03-05-2018 дата публикации

METHOD FOR PRODUCING CRYSTALLINE SILICOTITANATE

Номер: WO2018079500A1
Принадлежит:

The purpose of the present invention is to produce crystalline silicotitanate having high cesium- and strontium-adsorption performance in sea water in an industrially advantageous manner. A method of the present invention comprises: a first step of mixing a silicic acid source, a sodium compound, a potassium compound, titanium tetrachloride and water together to produce a mixed gel; and a second step of reacting the mixed gel. In the first step, the silicic acid source, the sodium compound, the potassium compound and titanium tetrachloride are added in such a manner that the following formulae can be satisfied: Ti/Si = 1.2 to 1.5 inclusive and M2O/SiO2 = 3.8 to 5.0 inclusive (wherein M represents Na or K). In the second step, the reaction is carried out at 70 to 110ºC under an atmospheric pressure.

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10-03-2016 дата публикации

IODATE ION ADSORBENT AND METHOD FOR PRODUCING SAME

Номер: WO2016035839A1
Принадлежит:

The present invention provides an iodate ion adsorbent which has excellent iodate ion adsorption performance. An iodate ion adsorbent according to the present invention contains a cerium hydroxide (IV). The cerium hydroxide (IV) has a weight loss rate of from 4.0% to 10.0% (inclusive) if the temperature thereof is increased from 200°C to 600°C in a thermogravimetric analysis. In addition, if the cerium hydroxide (IV) is subjected to an infrared absorption spectrum analysis, absorption peaks are observed in the range from 3,270 cm-1 to 3,330 cm-1 (inclusive), in the range from 1,590 cm-1 to 1,650 cm-1 (inclusive) and in the range from 1,410 cm-1 to 1,480 cm-1 (inclusive).

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24-08-2017 дата публикации

CESIUM AND/OR STRONTIUM ADSORBENT

Номер: WO2017141931A1
Принадлежит:

Provided is an adsorbent that has the ability to adsorb cesium and strontium, and in particular can efficiently adsorb strontium from a medium such as water containing a low concentration of strontium. Also provided is an adsorbent manufacturing method that is suitable for the manufacture of said adsorbent. This cesium and/or strontium adsorbent is a strontium adsorbent that includes a group 5 element M-containing crystalline silicotitanate, in which a crystalline silicotitanate expressed by the general formula A2Ti2O3(SiO4)∙nH2O (where A indicates one or two types of alkali element selected from Na and K, and n indicates a number from 0 to 2) contains a group 5 element M, wherein, when X-ray diffraction measurement is performed with a diffraction angle (2θ) range of 5° to 80° and using Cu-Kα as an X-ray source, the width at half height of a main peak within 2θ=11° to 12° is 0.320° or less, and no peak is observed in the range 2θ=29° to 30°.

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27-08-2015 дата публикации

METHOD FOR PRODUCING NONATITANATE OF ALKALI METAL

Номер: WO2015125809A1
Принадлежит:

A method for producing a nonatitanate of an alkali metal, the method having: a first step for reacting an alkali metal hydroxide with titanium tetrachloride and producing Ti(OH)4; a second step for mixing the resulting Ti(OH)4 and an alkali metal hydroxide; and a third step for heating the mixture obtained in the second step, the alkali metal hydroxide being used so that the A/Ti molar ratio (A represents an alkali metal element) falls within a range of 1.0-5.0 in the second step, wherein a nonatitanate of an alkali metal can be produced economically.

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14-04-2016 дата публикации

ADSORPTION MATERIAL

Номер: WO2016056530A1
Принадлежит:

The purpose of the present invention is to provide an adsorption material containing a crystalline silicotitanate which is effective for adsorption of cesium and further for adsorption of strontium even in sea water. The adsorption material of the present invention is a cesium and/or strontium adsorption material which contains crystalline silicotitanate which is represented by a general formula; A4Ti4Si3O16·nH2O (where, A represents one or two kinds of alkali metal selected from Na and K, and n represents 0 to 8), and which has a crystallite diameter of 60 nm or more and a half value width of the diffraction peak of 0.9 degree or less in a lattice plane (100 plane).

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05-10-2017 дата публикации

METAL ION ADSORPTION AGENT

Номер: WO2017170785A1
Принадлежит:

The present invention provides an adsorption agent that comprises crystalline silicotitanate, has a Ti/Si ratio of 4:3, and is useful for adsorbing metal ions, particularly for adsorbing cesium in seawater, as well as for adsorbing strontium. The present invention is a metal ion adsorption agent, comprising crystalline silicotitanate represented by the general formula A4Ti4Si3O16∙nH2O (where A is an alkali metal selected from Na and K, and n is a number from 0 to 8), in which the X-ray diffraction analysis half-width value of the main peak at which 2θ is 10° to 13° is 1.0° or less, and the BET specific surface area is 100 m2/g.

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07-04-2016 дата публикации

METHOD FOR PRODUCING CRYSTALLINE SILICOTITANATE

Номер: WO2016052610A1
Принадлежит:

An industrially advantageous method is provided for producing crystalline silicotitanate, which is effective as a material that adsorbs cesium and also as a material that adsorbs strontium in ocean water. This method of producing crystalline silicotitanate represented by general formula K4Ti4Si3O16・nH20 (in the formula, n represents 0-8) is characterized by involving a first step for obtaining a gel mixture by mixing a silicic acid source, a potassium compound, titanium tetrachloride and water, and a second step for producing hydrothermal reactions in the gel mixture obtained in the first step, wherein, in the first step, the silicic acid source, the potassium compound and the titanium tetrachloride are added such that the molar ratio Ti/Si of the Ti and Si contained in the gel mixture is 0.5-3.0 and the molar ratio of K2O and SiO2 is K2O/SiO2 is 0.5-3.0.

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07-04-2016 дата публикации

METHOD FOR PRODUCING CRYSTALLINE SILICOTITANATE

Номер: WO2016052611A1
Принадлежит:

An industrially advantageous method is provided for producing crystalline silicotitanate which has excellent cesium and strontium adsorption/removal characteristics in ocean water. This method for producing crystalline silicotitanate represented by the general formula Na4Ti4Si3O16・nH2O) (in the formula, n represents 0-8) is characterized by involving a first step for obtaining a gel mixture by mixing a silicic acid source, a sodium compound, titanium tetrachloride and water, and a second step for producing hydrothermal reactions in the gel mixture obtained in the first step, wherein, in the first step, the silicic acid source, the sodium compound and the titanium tetrachloride are added such that the molar ratio Ti/Si of the Ti and Si contained in the gel mixture is 1.2-1.5 and the molar ratio Na2O/SiO2 of Na2O and SiO2 is 0.7-2.5.

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28-12-2017 дата публикации

METHOD FOR MANUFACTURING SOLIDIFIED BODY OF RADIOACTIVE WASTE

Номер: WO2017222000A1
Принадлежит:

The present invention provides a solidified body of radioactive waste whereby an adsorbent including titanium to which a radioactive element is adsorbed can be vitrified and most of the adsorbent including titanium to which the radioactive element is adsorbed can be confined, and furthermore, elution of the radioactive element is suppressed. This method for manufacturing a solidified body of radioactive waste is characterized by comprising hot-melting a mixture including an SiO2 source, an M2O source (where M represents an alkali metal element), and an adsorbent including titanium to which a radioactive element is adsorbed and obtaining a glass solidified body, and the adsorbent including titanium is preferably one or more types selected from a silicotitanate, an alkali nonatitanate, and titanium hydroxide.

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04-08-2016 дата публикации

ADSORBENT AND METHOD FOR PRODUCING SAME

Номер: WO2016121497A1
Принадлежит:

Provided is an adsorbent for iodide ions and iodate ions, which exhibits excellent adsorption performance of iodide ions and iodate ions. An adsorbent according to the present invention comprises cerium (IV) hydroxide and a poorly soluble silver compound. It is preferable that the content of the cerium (IV) hydroxide is from 50% by mass to 99% by mass (inclusive) and the content of the poorly soluble silver compound is from 1% by mass to 50% by mass (inclusive). It is also preferable that the poorly soluble silver compound is at least one substance that is selected from among silver zeolite, silver phosphate, silver chloride and silver carbonate.

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15-06-2017 дата публикации

METHOD FOR TREATING RADIOACTIVE WASTE LIQUID CONTAINING RADIOACTIVE CESIUM AND RADIOACTIVE STRONTIUM

Номер: WO2017099044A1
Принадлежит:

Provided is a method for treating a radioactive waste liquid containing radioactive cesium and radioactive strontium. In the method, a radioactive waste liquid containing radioactive cesium and radioactive strontium is passed through, at a linear flow rate (LV) of 1-40 m/h and a space velocity (SV) of 200 h-1 or less, an adsorption column filled to a bed height of 10-300 cm with an adsorbent material so as to adsorb the radioactive cesium and the radioactive strontium onto the adsorbent material. The adsorbent material is particulate with a particle diameter of 250-1200 µm and is a cesium or strontium adsorbent material which contains a crystalline silicotitanate represented by general formula A4Ti4Si3O16·nH2O (in the formula, A denotes Na, K or a combination thereof and n denotes a number between 0 and 8), which has a crystallite diameter of 60 Å or more and a half-value width at a diffraction peak of the lattice plane (100 plane) of 0.9° or less.

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28-04-2016 дата публикации

ADSORBENT AND METHOD FOR PRODUCING SAME

Номер: WO2016063843A1
Принадлежит:

The purpose of the present invention is to provide an adsorbent which is not susceptible to the effects of calcium and which can selectively adsorb and remove strontium contained in water. Provided is a strontium adsorbent which contains barium silicate. The barium silicate may be amorphous or crystalline. The BET specific surface area of the adsorbent is 15-50 m2/g. The BaO/SiO2 molar ratio in the adsorbent is preferably 0.6-0.7. In addition, the adsorbent preferably contains the BaO component at a proportion of 50 mass % or higher.

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09-06-2016 дата публикации

ADSORBING AGENT AND METHOD FOR PREPARING SAME

Номер: WO2016088544A1
Принадлежит:

Provided is an adsorbing agent suitably used for the adsorptive removal of strontium contained in water. The strontium-adsorbing agent according to the present invention includes barium-containing aluminosilicate, and exhibits a Na-A type zeolite-like diffraction pattern in which diffraction peaks are observed in at least 29.8-30.2° inclusive, 23.8-24.2° inclusive, and 7.0-7.4° inclusive, through a powder X-ray diffraction method. The content of BaO in aluminosilicate is preferably 2-38 mass% inclusive.

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29-06-2017 дата публикации

ADSORBENT FOR RADIOACTIVE ANTIMONY, RADIOACTIVE IODINE, AND RADIOACTIVE RUTHENIUM, AND METHOD OF PROCESSING RADIOACTIVE WASTE LIQUID USING SAID ADSORBENT

Номер: WO2017110485A1
Принадлежит:

Provided are an adsorbent and a method of processing radioactive waste liquid with which radioactive antimony, radioactive iodine, and radioactive ruthenium can be removed simply with a high removal efficiency. The adsorbent includes cerium hydroxide (IV) in the form of particles or powder having a particle size at least equal to 250 µm and at most equal to 1200 µm, and is capable of simultaneously adsorbing radioactive antimony, radioactive iodine and radioactive ruthenium. The method of processing a radioactive waste liquid includes causing a radioactive waste liquid containing radioactive antimony, radioactive iodine and radioactive ruthenium to pass through an adsorption tower filled with said adsorbent in a layer having a height of at least 10 cm and at most 300 cm, with a water-flow linear flow velocity (LV) at least equal to 1 m/h and at most equal to 40 m/h, and a space velocity (SV) at most equal to 200 h-1, to cause the radioactive antimony, radioactive iodine and radioactive ...

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06-07-2017 дата публикации

METHOD FOR PRODUCING ADSORBENT CONTAINING CRYSTALLINE SILICOTITANATE

Номер: WO2017115683A1
Принадлежит:

A method for producing an adsorbent according to the present invention is a method for producing an adsorbent wherein Nb is contained in a crystalline silicotitanate represented by general formula A2Ti2O3(SiO4)⋅nH2O (wherein A represents one or two alkali metal elements selected from among Na and K; and n represents a number of 0-2). This method for producing an adsorbent comprises: a first step for obtaining a niobium-containing mixed gel by adding titanium tetrachloride into a liquid that contains a silicic acid source, an alkali metal compound, a niobium source and water; and a second step for subjecting the niobium-containing mixed gel obtained in the first step to a hydrothermal reaction. The niobium-containing mixed gel in the first step is able to be obtained by adding titanium tetrachloride into a liquid that contains at least a silicic acid source, an alkali metal compound and water.

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07-06-2018 дата публикации

ADSORBENT CONTAINING AMORPHOUS IRON (III) HYDROXIDE AND METHOD FOR MANUFACTURING SAME

Номер: WO2018101286A1
Принадлежит:

Provided are: an adsorbent, containing iron (III) hydroxide, that can also be used upon being packed into a column, etc., and that has an excellent performance of adsorbing iodate ions in particular; and an industrially advantageous method for manufacturing the adsorbent. This adsorbent is characterized in containing an amorphous iron (III) hydroxide in which the temperature of a heat generation peak occurring on a DSC temperature rise characteristics curve for a 25-700°C temperature rise is 350-400°C, the weight decrease ratio when the temperature is raised from 25°C to 700°C is 18% or above, and the electrical conductivity is 14 mS/cm or below. The adsorbent preferably has a BET specific surface area of 100-300 m2/g and is more preferably a granulated product.

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