127 results about "Cerous chloride" patented technology

The invention provides a method for preparing (3beta)-17-(3-pyridyl)-androstane-5,16-diene-3-alcohol acetate. According to the method, the traditional Grignard addition reaction is adopted, pyridine groups are introduced in the presence of a catalyst such as cerous chloride, the method is low in raw material cost, available in raw materials, economical, practical, environment-friendly, convenient and simple in post-treatment, the reaction process is easily and continuously operated, the product quality and yield can be improved, and industrial production is promoted.

The invention relates to a methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant and a preparation method and application thereof. The methacrylic acid-styrene-hydroxyethyl acrylate copolymer dispersant is synthesized with styrene, methacrylic acid and hydroxyethyl acrylate as monomers, and cerous chloride-2-isopropyl-thioxanthone complex, cerous chloride-anthraquinone complex or cerous chloride-diphenyl ketone complex as a photoinitiator through photo initiated radical copolymerization. The dispersant provided by the invention can have a good dispersion effect on inorganic powder and pesticide preparations, and can be compounded with a wetter to take good dispersion effect on pesticide water-borne preparations.

The invention discloses a method for preparing quinolone medicaments. The conventional methods using organic solvents with a high boiling pint and a large polarity, adopting other solid alkali materials except reaction materials or using other liquid alkali materials except the reaction materials have obvious defects. The method of the invention adopts a technical scheme that: quinolone compounds are prepared by a piperazidine reduction of quinolone carboxylate nuclear parent and piperazidine derivates in water; the piperazidine reduction is completed in the presence of a catalyst which may be one or a mixture of more than two of cerous chloride heptahydrate, N,N-carbonyldiimidazole, 4-dimethylamino pyridine, tetrabutylammonium bromide, benzyl triethylammonium chloride and tetrabutyl ammonium hydroxide. The method for preparing the quinolone medicaments radically solves the problems of terrible smell, realizes clean production, avoids using the other alkali substances except the reaction materials as an acid-binding agent and overcomes the defects of the prior art.

The invention discloses a preparation method of jade polishing powder. The method is characterized by comprising the steps of feeding 12-26% of cerium chloride and 20-32% of zirconium oxychloride into a reactor according to the mass percent concentration, and dissolving the mixture in water; then, feeding 15-30% of aluminium oxide, 8-15% of silicon nitride, 2-6% of chromic oxide and 0.5-3% of dispersing agent into the water solution, and stirring to obtain slurry; dissolving 15-30% of ammonium oxalate into water, and then feeding the product into the slurry, wherein the sum of the content of all the components except water of the slurry is 100%; stirring under the normal pressure, heating up to 85 DEG C, and carrying out a reaction for 30-36h; then, heating up to 120 DEG C, and carrying out the reaction for 2-4h; carrying out calcination for 2-4h at the temperature of 950-1000 DEG C, cooling and crushing by airflow to obtain the jade polishing powder. The preparation technology is simple, easy in control of conditions, low in production cost and easy in industrial production. When being used for the polishing process, the polishing powder is good in powder polishing effect, high in glossiness, free from scratch, high in flatness and less in power dosage.

The invention relates to a preparation method of a cerium dioxide nanorod photocatalyst. By controlling variables, three nanorod monomers with different morphologies are prepared; furthermore, the nanorod monomer with the best photocatalytic performance is chosen out. According to the preparation method, cerous chloride heptahydrate, sodium hydroxide and deionized water are utilized as raw materials, and the cerium dioxide nanorod photocatalyst monomer is prepared by a hydrothermal method. An experiment can be used for researching photocatalytic performance of the cerium dioxide nanorod photocatalyst monomer by preparing three cerium dioxide nanorod monomers with different morphologies, and blank in researching the photocatalytic performance of the cerium dioxide nanorod monomer is filled up.

The invention disclose a method for preparing rare earth type hydrochlorination catalyst of acetylene comprising tin, which belongs to the field of preparing the hydrochlorination catalyst of acetylene. The catalyst comprises stannic chloride, rare earth chloride, other metal chlorides and carriers, wherein the rare earth chloride is adopted as cerium chloride or lanthanum chloride, and the carriers are cerium-zirconium powder or zirconia. The catalyst is prepared by soaking method, can be applied to fixed-bed reactors, has low cost, has no pollution, and has good catalytic activity and high selection in the process of producing vinyl chloride by hydrochlorination of acetylene.

The invention provides a method for preparing a binary denitration sulfur-resistant catalyst-loaded filter material by using a one-step in-situ synthesis method. The method provided by the invention is characterized in that the binary denitration sulfur-resistant catalyst-loaded filter material is prepared by taking a polyphenylene sulfide filter material treated by concentrated nitric acid as a catalyst carrier, potassium permanganate and cerous chloride heptahydrate as a catalyst precursor and deionized water is utilized as a solvent, and by using an in-situ polymerization method. The loaded filter material can be used as a dedusting agent and a denitration sulfur-resistant agent at the same time, and relatively good denitration sulfur-resistant performance can be achieved when the catalyst loading capacity is greater than 5mg/cm<2>.

The invention discloses a chalcone derivative with good anti-free radical oxidative damage activity. The structural formula of the chalcone derivative is shown as the following. The preparation method of the chalcone derivative includes: letting syringaldehyde and para-substituted acetophenone react in piperidine and under a high temperature so as to generate corresponding substituted chalcone; reacting purified chalcone with sodium borohydride under a cerous chloride heptahydrate condition to generate a chalcone derivative crude product, and then conducting purification. , Compared with ascorbic acid, the product provided by the invention has low anti-DPPH free radical and anti-ABTS<+> free radical IC50 value, and strong free radical scavenging ability, thus having broad application prospects in preparing drugs for treating neurodegenerative diseases. (formula I).

The invention relates to a preparation method of a cerium dioxide nanorod doped titanium dioxide nanoparticle photocatalyst. According to the preparation method, cerous chloride heptahydrate, sodium hydroxide, deionized water, titanium trichloride and ethyl alcohol are utilized as raw materials, and the cerium dioxide nanorod doped titanium dioxide nanoparticle photocatalyst can be prepared by a hydrothermal method. The cerium dioxide nanorod doped titanium dioxide nanoparticle photocatalyst has simpleness in preparation, low cost, good catalyzing and adsorbing performance and can completely catalyze and degrade organic pollutants under normal temperature, normal pressure and sunlight irradiation; degradation products have no pollution; furthermore, the catalyst can adsorb inorganic pollutant, for example, heavy metal ions. The invention further discloses research on photocatalytic performance and adsorptive property of the prepared photocatalyst. According to experiments, rose bengal and lead nitrate are respectively utilized as photocatalyst to adsorb experimental pollutants, and the research shows that the catalyst has good performance.

The invention provides a preparing method for a corrosion-resistant aluminum alloy super-hydrophobic surface. An aluminum alloy is pretreated so that surface oil contamination and grease can be removed, then, the aluminum alloy subjected to polishing treatment is put in a mixed aqueous solution of cerium chloride and urea in a high-pressure reactor, a layer of composite micro-nano structure is prepared on the aluminum alloy surface through a hydrothermal reaction, and finally through octadecanoic acid modification, the super-hydrophobic surface with a corrosion-resistant micro-nano structure is obtained on the surface of the aluminum alloy. The contact angle of a super-hydrophobic obtained through the method can reach 155.5 degrees, the super-hydrophobic film has very good super-hydrophobicity, and meanwhile the film layer shows excellent abrasion resisting performance and stability performance in a simulated sea water solution. Compared with the prior art, the preparation process is simple, conditions are easy to control, the cost is low, environmentally friendliness is achieved, and the prepared aluminum alloy super-hydrophobic surface is relatively high in stability.

The invention discloses a water quality purifier special for aquaculture. The water quality purifier special for the aquaculture comprises the following raw materials in part by weight: 30 to 36 parts of rare earth-modified zeolite, 18 to 22 parts of bamboo charcoal particle and 10 to 15 parts of tourmaline, wherein the rare earth-modified zeolite is prepared by the following steps: dissolving lanthanum chloride and cerous chloride in water in part by weight; after stirring the solution to be uniform, adjusting the pH value to be 10 to 11; adding crushed zeolite into the solution; after soaking the crushed zeolite for 15 hours, filtering and washing the zeolite with water to be neutral; drying the zeolite; baking the dried zeolite at the temperature of 500 DEG C for 4 hours to obtain the rare earth-modified zeolite, wherein when the zeolite is modified, the lanthanum chloride, the cerous chloride and the zeolite are in the weight ratio of 1 to 2 to 12. The finished product, namely, the water quality purifier special for the aquaculture, has a good effect on purifying the water quality, so that the concentration of ammonia nitrogen and nitrite in a water body is reduced obviously, the concentration can be reduced by 88 percent to the maximum, the COD (chemical oxygen demand) is reduced obviously, and the effect is remarkable; the water quality purifier special for the aquaculture is environment-friendly, and cannot cause secondary pollution of the water body.

The invention discloses a Pt/Ce-USY catalyst for oxidative degradation of chlorine-containing VOCs and a preparation method of the Pt/Ce-USY catalyst. According to the preparation method of the Pt/Ce-USY catalyst for oxidative degradation of chlorine-containing VOCs provided by the invention, tetraammineplatinum (II) dichloride, cerous chloride and an ultra-stable Y molecular sieve are used as rawmaterials, CeO2 is loaded by adopting a precipitation-deposition method and Pt is loaded by adopting an ion exchange method, and the contents of CeO2 and Pt in the catalyst are 3-20% and 0.1-0.45% respectively. The catalyst is simple in preparation process and low in cost, has good low-temperature catalytic oxidation activity and stability on chlorine-containing VOCs and non-chlorine-containing VOCs, and presents good application prospects.

The invention provides a technology for separating light rare earth from southern ion-absorbing type rare earth ore. The technology is implemented by adopting an aqueous light rare earth chloride solution obtained by grouping separation from the southern ion-absorbing type rare earth ore as a feed liquid and P507 as an extraction agent, and comprises three fractional extraction systems, and the three fractional extraction systems comprise a La/LaCe/PrNd/Nd four-outlet fractional extraction and separation system, a La/Ce two-feed-inlet fractional extraction and separation system and a Pr/Nd two-feed-inlet fractional extraction and separation system. By means of combination of the three fractional extraction systems, four separation products including 5N-grade lanthanum chloride, 3N-grade cerium chloride, 3N-grade praseodymium chloride and 4N-grade neodymium chloride are obtained directly. The technology has the advantages of high purity of a target separation product, high yield of rareearth element, low acid-base consumption, short technological process, low separation cost and the like.

The invention provides a preparation method of a composite core-shell nano hollow ball and application of the composite core-shell nano hollow ball in a dye-sensitized solar cell and belongs to the technical field of solar cells. The method comprises steps of mixing cerous chloride heptahydrate with trisodium citrate, ytterbium nitrate, erbium nitrate water solution and hydrogen peroxide solution to carry out a hydrothermal reaction so as to obtain a double-layered structure CeO2:Yb/Er hollow ball nano ball; dispersing the nano ball in isopropanol; mixing the obtained solution with ammonia water and tetraethyl orthosilicate to carry out a water bath reaction so as to obtain a Ce02:Yb/Er@SiO2 hollow ball nano ball; and mixing the obtained nano ball with polyvinylpyrrolidone, ethylene glycol, silver nitrate and sodium borohydride water solution and carrying out reactions so as to obtain a double-layered structure Ce02:Yb/Er@SiO2@Ag composite core-shell nano hollow ball. By coating the material on the surface of nano-titanium dioxide slurry, and calcinating the obtained material and dipping the obtained material into N719 dyes, a photoanode material of a dye-sensitized solar cell is obtained.

A method of preparing cerium boride powder, according to the present invention, includes a first step for generating mixed powder by mixing at least one selected from among cerium chloride (CeCl₃) powder and cerium oxide (CeO₂) powder, at least one selected from among magnesium hydride (MgH₂) powder and magnesium (Mg) powder, and boron oxide (B₂O₃) powder, a second step for generating composite powder including cerium boride (Ce_xB_y) and at least one selected from among magnesium oxide (MgO) and magnesium chloride (MgCl₂), by causing reaction in the mixed powder at room temperature based on a ball milling process, and a third step for selectively depositing cerium boride powder by dispersing the composite powder in a solution.

A silicone gel composition comprising: (A) branched organopolysiloxane having, on average, at least two alkenyl groups bonded to silicon atoms in a molecule, and a viscosity ranging from 10 to 10,000 mPa·s at 25° C.; (B) organohydrogenpolysiloxane; (C) platinum-based addition reaction catalyst; and (D) a reaction product of (d1) alkali metal silanolate with (d2) at least one ceric salt selected from cerium chloride and a carboxylic acid salt of cerium.

The invention discloses a reproducible asphalt mixture and a preparation method thereof. The reproducible asphalt mixture is prepared from waste road petroleum asphalt, waste engine oil, pulverized fuel ash, cerous chloride, zirconium dioxide, polyethylene glycol, epoxy resin E-44, ethyl carbamate and phthalate. The preparation method comprises the following steps of firstly performing heating, stirring and uniform mixing on the waste road petroleum asphalt, the pulverized fuel ash, the waste engine oil, the polyethylene glycol and the epoxy resin; then, adding other ingredients for normal temperature stirring and uniform mixing; obtaining the reproducible asphalt mixture through preparation. By adding modifying agents into the waste road petroleum asphalt, the reproducible asphalt mixture with the improved performance is obtained. The preparation method is simple; the waste asphalt can be reproduced at a low temperature; the reproduced asphalt has good performance; the energy saving, emission reduction and environment protection are facilitated.

The invention discloses a liquid used for chemical tin immersion of a 5G signal board, and belongs to the technical field of chemical tin immersion. A liquid composition comprises an agent A for tin immersion and a pretreatment agent B. In the liquid, cerium chloride and nano bismuth particles can adhere to surface vacancies, dislocation outcrops and grain boundaries of stannous ions, the surface energy of grains can be reduced, and therefore the tin ion replacement reaction is improved, it is guaranteed that the forming rate of a plating layer is increased, cerium chloride and nano bismuth can reduce the resistivity of a solvent, after cerium chloride and nano bismuth are synchronously adsorbed on the surface of a copper base through the replacement reaction, electric conductivity can be improved, meanwhile, a PCB is pre-immersed in the agent B to be pretreated before tin immersion treatment so that APG, quercetin and thiourea can be uniformly dispersed and adsorbed on the surface of the copper base after a nonionic surfactant is used, the surface of the copper base has good wettability, the diffusion coefficient of tin ions is reduced during the replacement reaction, the deposition process is inhibited, crystallization is fine and uniform, electric conductive strength is improved, and the durable life is prolonged.