35 results about "Cerium trichloride" patented technology

The invention relates to a preparation method of ceria nanorod doped titanium dioxide nanoparticle photocatalyst, which uses cerium trichloride heptahydrate, sodium hydroxide, deionized water, titanium trichloride and ethanol as raw materials, through a hydrothermal method A photocatalyst doped with ceria nanorods and titania nanoparticles was prepared. This product is simple to prepare, low in cost, and has good catalytic and adsorption properties. Under normal temperature and pressure, and under sunlight, it can completely catalyze and degrade organic pollutants, and the degradation products are pollution-free, and the catalyst can adsorb inorganic pollutants. such as heavy metal ions. The present invention also carries out research on the photocatalytic performance and adsorption performance of the prepared photocatalyst. In the experiment, rose bengal and lead nitrate are respectively used as pollutants in the photocatalytic and adsorption experiments. The research shows that the performance of the catalyst is good.

The invention relates to a preparation method of tris(2-furyl) phosphine, which comprises the following steps of: in the atmosphere of inert gas, at the room temperature, dripping a butyl lithium solution in a normal hexane solution containing furan and tetramethylethylenediamine, raising the temperature to 40-60 DEG C, and keeping for 0.5-3 hours to produce a furyl lithium reagent; dripping phosphorus halide in the normal hexane solution at the temperature of minus 10 to 0 DEG C, carrying out heat insulation for 0.5-2 hours, naturally raising the temperature to the room temperature, and stirring for 1-8 hours; and pouring a reaction solution into a saturated strong acidic-weak basic inorganic salt solution, concentrating an organic phase to obtain a crude product, and then recrystallizing with of petroleum ether to obtain tris(2-furyl) phosphine. With the adoption of the preparation method, the preparation cost is greatly lowered, the yield is greatly increased, and the product purity is high. In the embodiment of the invention, anhydrous cerium trichloride is added into produced furyl lithium to obtain an organic cerium reagent, and the organic cerium reagent is further reacted with phosphorus trihalide, so the yield can be further increased, and the by-products can be reduced.

The invention discloses a preparation method of magnetic loading cerium oxide for exhaust gas treatment. The method sequentially comprises the following steps: adding hydrogen peroxide and a dilute NaOH solution to a FeCl2 solution in a dropwise manner under a thermostatic water bath condition, stirring the solutions, transferring the finally obtained solution to an autoclave, continuously carrying out a reaction, naturally cooling the obtained reaction product to room temperature to obtain a solid precipitate, and adding the solid precipitate to a sodium dodecyl benzene sulfonate solution to obtain magnetic organic hydrotalcite; preparing a formation solution from (3-aminopropyl)triethoxysilane, salicylaldehyde and cerium trichloride according to a molar ratio of 1:1:1, and adding magnetic organic hydrotalcite to form a cerium-containing organic complex pillared hydrotalcite; and adding the cerium-containing organic complex pillared hydrotalcite to a muffle furnace, roasting the cerium-containing organic complex pillared hydrotalcite at 400-550 DEG C for 6-8h to convert carbon and nitrogen elements into gas which overflows and form tunnels in order to obtain the magnetic synergistic cerium oxide catalyst. The above structure of the catalyst is in favor of adsorbing and catalyzing pollutants, and is also in favor of separating.

The invention discloses a silver and lanthanum ion water purification composite ceramic membrane process, comprising the following steps: step 1, reacting titanium dioxide powder and concentrated sodium hydroxide solution to obtain sodium trititanate powder; The mixed aqueous solution of iridium chloride is soaked in sodium trititanate powder, and then calcined to obtain solid phase powder A; step 3, the solid phase powder A is pressed into a tablet sample, and calcined to obtain ceramic sheet B; step 4, ceramic sheet B is obtained Put in dopamine aqueous solution, then put the dopamine aqueous solution in a vacuum box, fill the box with vacuum, then take out the ceramic sheet, put it in Tris buffer, soak for 18-20 hours, then take out the ceramic sheet, wash with deionized water , and dried to obtain the composite ceramic membrane. The invention optimizes the preparation process of the ceramic membrane, the prepared ceramic membrane can retain a large amount of free silver ions and lanthanum ions in the sewage, which is helpful for the recovery and utilization of metal ions in the waste water, and can reduce the toxicity of the sewage.

The invention discloses a preparation method of cerium sulfide-doped carbon quantum dot nano fluorescent material, which is characterized in that liquid A is prepared by using deionized water, itaconic acid and cerium trichloride; deionized water, thioethyl Amide, prepared to obtain liquid B; then, add liquid A to the reactor and stir, add liquid B dropwise to liquid A, the volume ratio of liquid A to liquid B is 5:1, after the dropwise addition, stir for 30 minutes, transfer Put it into the reaction kettle, cover the sealed cover, place it in a constant temperature box, keep the temperature at 180±2°C, and react for 20 to 24 hours to obtain a red suspension liquid, which is separated from the solid and liquid, and the liquid is crude cerium sulfide doped carbon quantum dot nano Fluorescent material; dialysis method is used to purify cerium sulfide doped carbon quantum dot nano fluorescent material. The preparation method has the advantages of green environmental protection, simple operation, and the cerium sulfide doped carbon quantum dot nano fluorescent material does not need secondary modification, and has the characteristics of high stability of fluorescence performance, small and uniform size, good biocompatibility and the like.

The invention discloses a chalcone derivative with good anti-free radical oxidation damage activity, and its structural formula is as follows. The preparation method of the chalcone derivatives is as follows: syringaldehyde and p-substituted acetophenone react under conditions of piperidine and high temperature to generate corresponding substituted chalcones; the purified chalcone and sodium borohydride react in seven React under the condition of water cerium trichloride to generate crude chalcone derivatives, which can be obtained after purification. The ascorbic acid product of the invention has a low IC50 value for anti-DPPH free radicals and anti-ABTS+ free radicals, and has a strong ability to scavenge free radicals, and has broad application prospects in the preparation of drugs for treating neurodegenerative diseases.