17 results about "Rubidium oxide" patented technology

In aspects, a concentration of lithium oxide at a surface is greater than a concentration of lithium oxide at a midpoint by from about 0.2 mol % to about 2 mol %. In aspects, a concentration of lithium oxide at a surface is from about 0.2 mol % to about 2 mol %. In aspects, a total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface is from about 5 mol % to about 15 mol %. In aspects, a ratio of the total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface to a concentration of lithium oxide at the surface is from about 1 to about 20. Methods include immersing a substrate in a molten salt bath at 380° C. or more for from about 1 minute to about 10 minutes or for from about 3 minutes to about 2 hours.

The invention belongs to the technical field of tungsten alloys, and particularly discloses a tungsten alloy catalyst and a preparation method thereof.The preparation method comprises the steps that tungsten powder, iron powder, cobalt powder, manganese powder, yttrium oxide powder and titanium oxide powder serve as raw materials, graphene serves as an activating agent, the raw materials are blended, then special pore forming of ammonium bicarbonate and rubidium hydroxide and corrosion of nitric acid are conducted, and the tungsten alloy catalyst is obtained. The tungsten alloy catalyst with excellent catalytic activity is obtained by coating a tin compound (changed into tin oxide through heat treatment), finally carrying out three times of heat treatment, eliminating internal stress in the alloy through the first time of heat treatment, inducing generation of metastable intermetallic compounds through the second time of heat treatment and finally carrying out high-temperature sintering, and the tungsten alloy catalyst can be used for catalytic hydrogen production.

The present invention provides the use of a promoter in the preparation of carbon-supported single-atom materials by microwave heating; the promoter includes one or more of lithium chloride, sodium chloride, potassium chloride, rubidium chloride, cesium chloride, lithium oxide, sodium oxide, potassium oxide, rubidium oxide, cesium oxide, lithium carbonate, sodium carbonate, potassium carbonate, rubidium carbonate and cesium carbonate. The present invention uses a specific promoter for the preparation of carbon-supported single-atom materials by microwave heating, and further adds a microwave absorber zinc chloride to fully pyrolyze an organic precursor with poor microwave absorption capacity under microwaves to obtain a highly carbonized carbon-supported metal single-atom material. The present invention uses zinc chloride as a microwave absorber to absorb microwave energy for heating, and the promoter is used to enhance the wave absorption capacity of zinc chloride, greatly increase the microwave heating temperature, and achieve full pyrolysis of the organic precursor, and the addition of the promoter not only greatly enhances its microwave heating capacity, but also has the advantages of low cost and easy removal after heating.

The invention relates to a method of providing an ore concentrate solution suitable for beneficiation processing, the method including the step of contacting an ore with one or more metal bases at elevated temperature. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore. Typically, the one or more metal bases are alkali metal bases, preferably chosen from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or caesium hydroxide, or alkaline earth bases, preferably chosen from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore.

The present invention relates to the technical field of terephthalaldehyde, and discloses a catalyst, its preparation method, and application. The catalyst comprises a carrier and an active component supported on the carrier, wherein the active component comprises molybdenum oxide, iron oxide, and rubidium oxide. The preparation method of the catalyst comprises supporting an active component precursor on the carrier, wherein the active component precursor comprises a molybdenum salt, an iron salt, and a rubidium salt. When used in the direct oxidation of p-xylene to produce terephthalaldehyde, the catalyst exhibits high conversion, selectivity, and yield.

In aspects, the lithium oxide concentration at the surface is from about 0.2 mol% to about 2 mol% higher than the lithium oxide concentration at the midpoint. In aspects, the lithium oxide concentration at the surface is from about 0.2 mol% to about 2 mol%. In aspects, the total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at the surface is from about 5 mol% to about 15 mol%. In aspects, a ratio of a total concentration of the potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface to a concentration of lithium oxide at the surface is from about 1 to about 20. The method includes immersing the substrate in a molten salt bath at a temperature of 380 DEG C or higher for about 1 minute to about 10 minutes or about 3 minutes to about 2 hours.

The present invention relates to a method of providing a concentrate solution suitable for use in a beneficiation process, the method comprising the step of contacting the ore with one or more metal bases at an elevated temperature. The one or more metal bases may form an ultra-alkaline medium that partially or fully dissolves the ore at elevated temperatures. Typically, the one or more metal bases are alkali metal bases, preferably selected from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or cesium hydroxide; or an alkaline earth metal base, preferably selected from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases may form an ultra-alkaline medium that partially or fully dissolves the ore at elevated temperatures.

The application discloses a glass frit for a single-crystal silicon solar cell front paste, a paste, and a single-crystal silicon solar cell. The glass frit comprises 1-30 mol% of lithium oxide, 5-40 mol% of bismuth oxide, 5-40 mol% of lead oxide, 1-40 mol% of silicon oxide, and X, wherein X is any one or a mixture of several of copper oxide, cesium oxide, rubidium oxide, sodium oxide, potassium oxide, aluminum oxide, magnesium oxide, strontium oxide, tin oxide, zinc oxide, or tungsten oxide, and the molar content of any one of the oxides in X is 1-10 mol%, and the content of X is not more than 50 mol%. The conductive paste prepared by using the glass frit contains a lead-bismuth-silicon oxide glass system, the system has enhanced resistance to acetic acid attenuation, ensures a sintering window at a high-temperature fast-firing sintering temperature, and X has strong corrosiveness, so that a lower contact area can be obtained. The conductive paste has high resistance to acetic acid in a wide sintering window.

The present invention discloses a silicon steel crystallizer protective slag and a preparation method thereof, and belongs to the field of protective slag. The silicon steel crystallizer protective slag comprises the following components by weight: calcium oxide: 20-25 parts, aluminum oxide: 4-8 parts, silicon dioxide: 30-40 parts, carbonized rice husk: 4-8 parts, rubidium oxide: 4-8 parts, calcium fluoride: 4-8 parts, salt-containing coarse borax: 1-2 parts, spinel: 1-2 parts, manganese oxide: 0.5-3 parts, barium carbonate: 0.5-1 parts, and adhesive: 1-3 parts. The production scheme of the present invention optimizes the ratio to ensure a certain melting rate while ensuring the thermal insulation effect, so that it has a certain liquid slag layer thickness, so that the protective slag is evenly consumed, thereby ensuring the smooth continuous casting process and producing high-quality ingots. When salt-containing coarse borax and spinel are added to the protective slag, the viscosity of the protective slag increases with the A1 in the slag. 2 O 3 The variation range of the content increase is small, therefore, the addition of salt-containing coarse borax and spinel in the present invention can properly adjust the viscosity of the protective slag.

The application relates to a ternary copper-based catalyst and a preparation method thereof, and the catalyst is prepared by the following steps: dissolving sodium hydroxide / potassium hydroxide / rubidium hydroxide in water, then adding copper chloride, sodium sulfide nine hydrate and hydrazine hydrate in sequence and fully stirring, and drying after centrifugal washing with deionized water and anhydrous ethanol to obtain NaCu5S3, KCu7S4 and RbCu7S4 respectively. Compared with copper-based catalysts such as copper oxide and copper sulfide, the ternary copper-based catalyst can well maintain its components and structure in the process of CO2 electro-reduction, avoids the C-C coupling step in the process of CO2 electrochemical reduction reaction, and realizes the purpose of high selectivity, large current and stable preparation of formic acid. The catalyst preparation process provided by the application is simple, the process is mild, and the raw materials are widely sourced, so that a potential way is provided for the large-scale production of formic acid by CO2 electrochemical reduction.

The application provides a wet oxidation catalyst and a preparation method and application thereof. The wet oxidation catalyst provided by the application comprises the following components in parts by weight: 15-35 parts of a carrier, 60-85 parts of a transition metal oxide and 0.5-8 parts of an alkali metal oxide, wherein the alkali metal oxide is selected from cesium oxide and / or rubidium oxide. When the wet oxidation catalyst of the application is used to treat formaldehyde-containing wastewater, the wet oxidation catalyst has the advantages of high degradation COD removal rate and long service life.

In aspects, a concentration of lithium oxide at a surface is greater than a concentration of lithium oxide at a midpoint by from about 0.2 mol % to about 2 mol %. In aspects, a concentration of lithium oxide at a surface is from about 0.2 mol % to about 2 mol %. In aspects, a total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface is from about 5 mol % to about 15 mol %. In aspects, a ratio of the total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface to a concentration of lithium oxide at the surface is from about 1 to about 20. Methods include immersing a substrate in a molten salt bath at 380° C. or more for from about 1 minute to about 10 minutes or for from about 3 minutes to about 2 hours.

The invention relates to the technical field of surfacing electrodes, and provides a surfacing electrode for repairing a grey cast iron sintering pallet, which comprises a core wire and a coating coated on the surface of the core wire, the coating comprises the following raw materials in parts by weight: 40-50 parts of marble, 20-30 parts of fluorite, 4-7 parts of ferrotitanium, 2-5 parts of ferromolybdenum, 1-3 parts of high-carbon ferromanganese, 1-3 parts of ferrosilicon, 4-7 parts of rare earth oxide, 10-14 parts of metal nickel, 1-5 parts of rubidium oxide, 0.3-2 parts of cesium fluoride and 10-20 parts of a binder; the rare earth oxide is yttrium oxide and / or lanthanum oxide. According to the technical scheme, the problem that the surface of the sintering pallet is prone to cracking after repairing and surfacing in the prior art is solved.

The application provides a preparation method of rubidium hydroxide monohydrate and belongs to the technical field of chemical production. Rubidium carbonate, calcium oxide and water are mixed to generate transformation, and a transformation liquid and a transformation residue are obtained; the transformation liquid is concentrated, and a concentrated liquid and a calcium hydroxide residue are obtained through filtration; the concentrated liquid and an additive are mixed, negative pressure distillation is carried out, the obtained solution is cooled and kept warm, gradient cooling is carried out, solid-liquid separation is carried out, and rubidium hydroxide monohydrate wet material is obtained; the rubidium hydroxide monohydrate wet material is vacuum dried, and rubidium hydroxide monohydrate is obtained. When rubidium hydroxide is prepared, an additive is added in the concentrated liquid, so that the crystal directional arrangement of rubidium hydroxide is realized when the rubidium hydroxide is cooled and crystallized, large-particle rubidium hydroxide monohydrate crystals are obtained, the prepared rubidium hydroxide monohydrate is in a granular form, the crystal shape is regularly and stably arranged, the rubidium hydroxide monohydrate cannot be hydrolyzed and decomposed at high temperature, is not easy to absorb water under normal conditions, the water-rubidium ratio of the product is 1:1, and the impurity is less than 0.01%.

The invention relates to the technical field of ceramic tile surface antibiosis, in particular to an antibacterial material and a preparation method thereof, and the antibacterial material comprises the following components by weight: 35-40 parts of feldspar; 5-6 parts of calcite; 15 to 20 parts of quartz; 10 to 12 parts of aluminum oxide; 7 to 9 parts of nano zinc; 8-10 parts of dolomite; 5-6 parts of strontium carbonate; 0.1 to 1 part of lanthanum oxide; 0.1 to 1 part of cerium oxide; 0.1 to 1 part of yttrium oxide; 0.1 to 1 part of rubidium oxide; four components including lanthanum oxide, cerium oxide, nano-zinc and yttrium oxide are added into an antibacterial material, so that an antibacterial effect is achieved; according to the antibacterial material, quartz and aluminum oxide are added to improve the wear resistance and acid-base resistance of the material, so that the antibacterial material with the antibacterial effect and the wear resistance and acid-base resistance is finally formed, and the situation that the appearance of a ceramic tile product is affected due to the fact that silver ions added into a traditional glaze layer are decomposed and discolored when heated is avoided; the antibacterial material is applied to a glaze layer on the surface of a ceramic tile to form the antibacterial ceramic tile, the distribution is more uniform, the cost is greatly reduced, and the antibacterial ceramic tile has better market competitiveness.

The present invention relates to a method for providing an ore concentrate solution suitable for mineral processing, the method comprising contacting an ore with one or more metal bases at a high temperature. The one or more metal bases at a high temperature may constitute a super-alkaline medium that partially or completely dissolves the ore. Typically, the one or more metal bases are alkali metal bases, preferably selected from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, or cesium hydroxide, or alkaline earth bases, preferably selected from calcium hydroxide, barium hydroxide, or strontium hydroxide. The one or more metal bases at a high temperature may constitute a super-alkaline medium that partially or completely dissolves the ore.

In aspects, a concentration of lithium oxide at a surface is greater than a concentration of lithium oxide at a midpoint by from about 0.2 mol % to about 2 mol %. In aspects, a concentration of lithium oxide at a surface is from about 0.2 mol % to about 2 mol %. In aspects, a total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface is from about 5 mol % to about 15 mol %. In aspects, a ratio of the total concentration of potassium oxide, rubidium oxide, cesium oxide, and francium oxide at a surface to a concentration of lithium oxide at the surface is from about 1 to about 20. Methods include immersing a substrate in a molten salt bath at 380° C. or more for from about 1 minute to about 10 minutes or for from about 3 minutes to about 2 hours.