rubidium cesium patent

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Atom-beam tube on caesium or rubidium atomic beams

SUBSTANCE: atom-beam tubes on caesium or rubidium serve as quantum frequency discriminators, use of which allows for generation of extremely accurate frequency signals. The atom-beam tube has a vacuum chamber 1, in which there are: source 2 of caesium or rubidium atomic beams, first and second atomic state selectors 3, microwave resonator 4 ...

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US Patent for Catalysts for the production of alkylene ...

The preferred level for rubidium or cesium individually expressed as a percentage by weight of the catalyst is K'"S.sup.2 where K'" is a constant in the range 0.001 to 1, more preferably 0.003 to 0.6 for example in the range 0.03 to 0.3 and S is as before defined.

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Process for recovering cesium from cesium ore - Carus ...

I claim: 1. A process for recovering cesium from a cesium-bearing mineral wherein the finely-divided mineral is roasted in admixture with an alkaline flux to convert the cesium to a water-soluble salt, the roasted mineral is extracted with water to obtain an aqueous solution of the cesium salt together with soluble salts and/or hydroxides of other alkali and alkaline earth metals, and the ...

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US Patent for Catalyst for the manufacture of ...

· A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potassium, cesium, thallium, boron, germanium, tungsten calcium, wherein the relative ratios of these elements are represented by the ...

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Method of making potassium, cesium, rubidium, antimony ...

The rubidium-cesium-antimony bialkali photocathode disclosed by McDonie provides the advantages of ease of photocathode processing and satisfactory conductivity; however, the spectral sensitivity of the aforementioned rubidium-cesium-antimony bialkali photocathode, in some photomultiplier tubes, is not as high as would be desired.

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REMOVAL OF CESIUM BY SORPTION FROM AQUEOUS …

DOE Patents Patent: REMOVAL OF CESIUM ... ABS>A process is given for selectively removing cesium from acid aqueous solutions containing cesium in microquantities and other cations in macroquantities by absorption on clinoptilolite. The cesium can be eluted from the clinoptilolite with a solution of ammonia, potassium hydroxide, or rubidium ...

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Method for preparation of rubidium and cesium sulfates|INIS

A method for preparation of rubidium and cesium sulfates, permitting to increase the product yield, improving its purity at the same time, is described. The proposed method includes thermal decomposition their alums with subsequent leaching of sulfates by water and

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Efficient co-extraction of lithium, rubidium, cesium and ...

· 1. Introduction. Lepidolite, K(Li,Al) 3 (Si,Al) 4 O 10 (F,OH) 2, is a phyllosilicate mineral showing variable compositions because of the isomorphism substitutions such as K substituted by Rb and Cs, and is considered as a major source of lithium, rubidium and cesium [].Lepidolite ore has gained attention in recent years due to the increasing demand for lithium caused by the rapid development ...

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US20140255278A1 - Methods To Recover Cesium Or …

A method to recover cesium, rubidium, or both from secondary ore is described and involves using scans and sorting techniques. Refined secondary ore is further described. ... Priority to US14/191,468 priority patent/US9458524B2/en …

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CN103240075A - Rubidium-cesium-vanadium ... - Google …

The invention discloses a rubidium-cesium-vanadium catalyst for producing sulfuric acid at a low temperature, and a preparation method thereof. The rubidium-cesium-vanadium catalyst comprises the following components in a mass ratio: 4-5% of rubidium hydroxide, 2-3% of cesium hydroxide, 4-6% of vanadium pentoxide, 6-10% of potassium hydroxide and the balance of kieselguhr.

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Recovery of Rubidium and Cesium from Brines by …

Rubidium and cesium as "the space age metal" are widely used in national defense, genetic engineering, environmental science and other fields [1-3]. It is well known that the resources of rubidium and cesium associated within lithium mica, cesium stone, salt lake brine and oil/gas field water are abundant.

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Method for simultaneously separating cesium and …

· CN-108091411-B chemical patent summary.

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Cesium iodide alloys (Patent) | DOE Patents

· DOI: 10.1021/acs.chemmater.5b04107. Cesium iodide alloys. Patent Application Kim, Hyoun-Ee; Moorhead, A J. This invention relates to a CsI composition with improved mechanical strength and outstanding multispectral infrared transmittance, for window use.

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(PDF) Selectivity of ion exchangers in extracting cesium ...

Measurements of the pressure-dependence of the Knight shift in lithium, sodium, rubidium, cesium, copper and aluminum have been made at room temperature in the pressure range 1–10,000 .

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Field test for cesium and rubidium. [Semiquantitative spot ...

· 368. 132p. An experimental investigation was made of the heat transfer and pressure drop characteristics of Rb and Cs boiling in a smooth round tube. The experiments were performed in a niobium-- 1% zirconium alloy loop operated in an argon atmosphere at temperatures up to 1800 deg F. Sixty-six test runs were made with Rb and eighty-one with Cs.

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US Patent for Cesium and rubidium derivatives as catalysts ...

A method of making flexible polyurethane s mixes a polyol (a hydroxyl group containing compound) with a cesium and/or rubidium fluoride catalyst, and reacts such mixture with at least one isocyanate. The cesium and/or rubidium fluoride may be used as the sole catalyst, replacing the blowing and gelling catalysts, such as amines, and metallic catalysts, such as a tin catalyst.

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Rubidium and Cesium in Organic Synthesis - Main Group ...

Rubidium and Cesium in Organic Synthesis. Seijiro Matsubara. Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto‐daigaku Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan. Search for more papers by this author. Seijiro Matsubara.

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Rubidium and Cesium | SpringerLink

· For almost 100 years after their discovery, rubidium and cesium were considered laboratory curiosities. Recent reductions in cost have stimulated interest in these metals. This paper describes their occurrence, extractive metallurgy, and known and possible uses.

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Lithium, Sodium, Potassium, Rubidium, Caesium and …

· Publisher Summary. This chapter discusses the discovery, isolation, abundance, and distribution of the alkali metals—lithium, sodium, potassium, rubidium, cesium, and francium. The group 1 elements are soft, low-melting metals that crystallize with bcc lattices. All elements are silvery-white except cesium, which is golden yellow in color.

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US4339469A - Method of making potassium, cesium, …

A base layer comprised of antimony and oxygen is formed on a substrate within an evacuated enclosure. Rubidium, potassium and cesium are then evaporated onto the base layer after which the substrate is heated to promote an activating reaction between the rubidium, potassium, cesium and antimony.

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US Patent for Method of improving the oxidation …

· An electrolyte for use in electrolytic platinum plating that results in reduced Cl, S, or P contaminant production. The bath comprises 0.01 to 320 g/lit of platinum in the form of the platinum salt dinitrodiammine platinum, Pt(NH3)2(NO2)2 or variants thereof and 0.1 to 240 g/lit of alkali metal carbonate M2CO3 or bicarbonate MHCO3 where M is selected from a group comprising lithium (Li ...

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Methods to recover cesium or rubidium from secondary …

· SE-540164-C2 chemical patent summary.

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Alkene dimerization - Ethyl Corporation

United States Patent 5243119 . Abstract: A normal 1-alkene containing 3-8 carbons is dimerized in the presence of a supported alkali metal as a catalyst and about 10-100 mol %, based on the amount of alkali metal catalyst, of an oxide of sodium, potassium, rubidium, and/or cesium as a co-catalyst. ... rubidium, or cesium as a co-catalyst, the ...

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Cesium metal — Its Production and Purification | …

· The ore resources, properties, and reactions of cesium metal are described. Three methods of ore processing—acid leaching, basic fusion, and direct reduction—are reported. Production of cesium metal by reduction of either CsBr or CsCl by lithium is detailed. The description of a means for determining the purity of cesium metal is included.

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Rubidium- and caesium-doped silicotungstic acid catalysts ...

· The caesium- and rubidium-doped silicotungstic acid catalysts were found to be selective for acrolein over 3-h on-stream, however, at a low glycerol feed concentration. These catalysts are reported to have insufficient stability over a longer reaction time …

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US Patent for Catalyst for production of ethylene oxide ...

When supported silver materials are being prepared, deposits of from about 4.0 .times. 10.sup.-.sup.5 to about 8.0 .times. 10.sup.-.sup.3 gram equivalent weights per kilogram of finished product of ionic, higher alkali metals, i.e., ionic potassium, rubidium or cesium simultaneously with the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide production.

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CN104625484A - Novel rubidium and cesium brazing flux ...

The invention provides a novel rubidium and cesium brazing flux and belongs to the field of brazing materials for non-metallic materials. The novel rubidium and cesium brazing flux comprise 0.12-0.5 mole of rubidium fluoride (RbF), 0.12-0.5 mole of cesium fluoride (CsF), 0.001-0.2 mole of aluminum oxide (Al2O3), 0.001-0.02 mole of lithium fluoride (LiF), 0.0001-0.02 mole of gallium oxide ...

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