5 results about "Rubidium oxide" patented technology

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 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.

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.

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.