8 results about "Caesium carbonate" patented technology

This invention discloses an organic liquid energy storage carrier and its application, relating to the field of liquid organic hydrogen carrier technology. The organic liquid energy storage carrier of this invention is any one of p-fluorotoluene, m-fluorotoluene, o-fluorotoluene, and fluoromethylbenzene. The application method of this organic liquid energy storage carrier is as follows: 4Å molecular sieve, Rh catalyst, cesium carbonate, and the organic liquid energy storage carrier are sequentially added to a high-pressure reactor, and the reactor is sealed before hydrogen gas is introduced. Following this, microwave plasma pretreatment is performed, and then hydrogen gas is introduced until the pressure inside the reactor reaches 50 bar, followed by a hydrogenation reaction. After cooling, post-processing is performed to obtain the energy storage carrier. The organic liquid energy storage carrier of this invention not only possesses excellent safety and extremely low toxicity, but its application method also reduces reaction energy consumption and increases yield. Therefore, this invention has broader application prospects.

The application provides a kind of spectral analysis device and medical cesium carbonate preparation method, it is related to spectral detection technical field, including analyzer, analysis mechanism and bearing mechanism;The top of the analyzer is rotatably connected with the cover plate, the inside of the analyzer is fixedly provided with the mounting plate, and the outer wall of the mounting plate and inside the analyzer is fixedly provided with the side plate;The analysis mechanism includes the mounting sleeve fixedly arranged in the inside of the side plate, the top of the mounting sleeve is provided with the sealing plate, the inside of the mounting sleeve is slidably connected with the spring rod, and the inside of the mounting sleeve and the bottom end of the spring rod are fixedly provided with the lifting frame.The scheme can automatically explore the infrared generator during the process of turning over and closing the cover plate, and the two turning plates are synchronously turned to form an avoidance during the exploring process, so that the emission end of the infrared generator can be protected from being covered by external factors based on protection, which can effectively improve the spectral detection accuracy, and the infrared generator can be well protected to further improve the spectral detection accuracy.

The application provides a beta'-thio-alpha, beta-unsaturated gamma-lactam derivative and a preparation method and application thereof, and belongs to the technical field of organic chemical synthesis. The beta'-thio-alpha, beta-unsaturated gamma-lactam derivative has a structure shown in formula I. The method constructs a beta'-thio-alpha, beta-unsaturated gamma-lactam derivative molecular skeleton through a free radical coupling and olefin isomerization process under the condition of blue light irradiation with cesium carbonate as an alkali. Through biological activity evaluation, it is found that the beta'-thio-alpha, beta-unsaturated gamma-lactam derivative prepared by the method has an inhibitory effect on MDA-MB-231 human breast cancer cells.

The application provides tail liquid cesium ion trace detection equipment and high-purity cesium carbonate preparation process, relates to the technical field of cesium ion trace detection, and comprises a detection table, a reaction pool, a pushing mechanism, a sample liquid extrusion mechanism and a detection mechanism; a mounting seat is internally mounted in the detection table, an electric turntable is internally mounted in the mounting seat, a positioning plate is fixedly arranged at the top of the electric turntable, the reaction pool is located above the positioning plate, a side frame is mounted on the side wall of the mounting seat and located on one side of the reaction pool, and the detection table is detected in an ECL mode. The detection sample liquid is pushed into the reaction pool in a pushing and extruding mode, the volume, flow rate and mixing state of the sample liquid can be accurately controlled through the design, the accuracy and stability of trace cesium ion detection are crucial, the pushing and extruding mode can ensure that the volume of the sample liquid injected into the reaction pool is consistent every time, and a reliable basis is provided for subsequent generation of a luminescence signal, detection of concentration and quantitative matching.

The application provides a preparation method of 5N cesium iodide and belongs to the technical field of inorganic material preparation. A cesium carbonate solution is purified to remove insoluble substances, and then cations such as calcium and magnesium are removed by using a cation exchange resin to obtain a purified cesium carbonate solution; the purified cesium carbonate solution is evaporated and concentrated, cooled and crystallized, and dried to obtain dry cesium carbonate; elemental iodine is added into water, carbon tetrachloride is added, and the carbon tetrachloride solution containing the elemental iodine is distilled to obtain refined elemental iodine; the dry cesium carbonate, the refined elemental iodine and hydrazine hydrate are mixed to obtain a cesium iodide solution, which is evaporated and concentrated, cooled and crystallized, and dried to obtain 5N cesium iodide. The application selects a low-cost and high-yield method to purify raw materials from the perspective of raw materials, and 5N cesium iodide is prepared, so that multiple recrystallizations are avoided, and the method has the characteristics of low cost and high yield.

The application provides a near-infrared two-region fluoroborondye molecule with high photo-thermal conversion efficiency and a preparation method thereof, wherein the fluoroborondye molecule BDF-8OMe is obtained by dissolving BDF-2Br and N1-(4-(bis(4-methoxyphenyl)amino)phenyl)-N4,N4-bis(4-methylphenyl)benzene-1,4-diamine (TPA-NH) in a toluene medium under a nitrogen atmosphere, using palladium acetate as a catalyst, tri-tert-butylphosphine tetrafluoroborate as a ligand, and cesium carbonate as an inorganic base. The fluoroborondye molecule has a D-A-D structure and has good absorption in the NIR-II region. The photo-thermal reagent prepared from the fluoroborondye molecule has a high photo-thermal conversion efficiency of 62.5% under 1064nm laser excitation, and can be used for precise and efficient NIR-II photoacoustic / photo-thermal imaging mediated photothermal therapy of deep tumor tissue, reduces tumor treatment damage and side effects, and improves treatment efficiency and accuracy.

This invention discloses an ordered perovskite nanosheet thin film, its preparation method, and a solar cell device. The method includes: first, adding cesium carbonate and oleic acid to a three-necked flask, evacuating the gas, and heating to obtain a cesium oleate precursor solution; then, purging with nitrogen and maintaining the temperature; next, adding lead iodide and octadecene sequentially to the three-necked flask, evacuating the gas, heating, purging with nitrogen, injecting oleic acid and oleylamine, reacting to form a lead iodide precursor solution, injecting it into the lead iodide precursor solution, reacting, quenching, and obtaining a crude perovskite nanosheet solution; purifying and dispersing the crude solution in a nonpolar solvent to obtain a perovskite nanosheet dispersion; dropping the dispersion onto the surface of deionized water, where it self-assembles into a thin film at the gas-liquid interface; then, immersing a substrate perpendicular to the liquid surface into deionized water and pulling it up to transfer the film to the substrate surface, obtaining an ordered perovskite nanosheet thin film. This invention effectively reduces carrier transport resistance and nonradiative recombination, improving the photoelectric performance of the perovskite nanosheet thin film.