132 results about "Cerous chloride" patented technology

Disclosed is a low-mercury catalyst for acetylene hydrochlorination. Mercuric chloride is carried on activated carbon. Raw materials comprise, by weight, 100 parts of activated carbon, 4-5 parts of mercuric chloride, 8-10 parts of total essential assistant, 1-5 parts of total non-essential assistant, wherein the essential assistant comprises 2-5 parts of bismuth chloride, 1-5 parts of cerium chloride, 1-5 parts of barium chloride and 2-5 parts of copper chloride; and the non-essential assistant comprises at least one of potassium chloride, phosphoric acid, zinc chloride and cuprous chloride. After being subjected to surface subtraction and drying on acid and oxidizing conditions, activated carbon is in reflux treatment with urea solution; and the catalyst can be prepared by soaking the treated activated carbon with HgC12 dissolved in hydrochloric acid and assistant solution sufficiently after urea is removed by steps of heating, washing the activated carbon with hydrochloric acid and finally drying the same. The carrying capacity of mercuric chloride in the catalyst is lower so that cost for the catalyst is reduced and consumption of mercury resources is decreased. Furthermore, activity and stability of the low-mercury catalyst are much higher than those of the existing high-mercury catalyst, and reforming rate and selectivity of reaction of vinyl chloride can be 99.7% and be higher than 99.8%. Accordingly, the low-mercury catalyst for acetylene hydrochlorination is suitable for industry production and is environment-friendly.

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 relates to a norbornene, hexafluoropropylene and acrylonitrile ternary polymerization catalyst. The preparation method of the catalyst comprises the steps that (pentamethyl cyclopentadiene) cerium chloride and a ligand are dissolved into a first solvent in a dry three-mouth flask in the inertia atmosphere, titanium tetrachloride is dropped into the solution while stirring is performed, stirring is performed at the constant temperature of 30-60 DEG C for 30-60 min after dropping is performed, and a cerium-titanium complex catalyst is obtained. The polymerization method comprises the steps that a norbornene monomer, a hexafluoropropylene monomer and an acrylonitrile monomer are taken and added into a reaction kettle where repeated vacuumizing and nitrogen charging are performed, and a second solvent is added for dissolution; then, the cerium-titanium complex catalyst is added, a reaction is performed under the certain temperature and pressure, and the product is washed to obtain the terpolymer. Catalyst raw materials are low in price and easy to obtain, catalytic activity can be generated at low temperature, norbornene, hexafluoropropylene and acrylonitrile ternary polymerization is catalyzed, the reaction temperature is low, the catalysis efficiency is high, the copolymer yield is high, and the terpolymer is good in photoetching performance.

The invention discloses a three-dimensional porous structure graphene-cerium dioxide composite photocatalyst. A three-dimensional porous structure graphene-cerium dioxide compound is prepared through hydrothermal reaction of graphene oxide and cerous chloride. The graphene-cerium dioxide compound has excellent photocatalytic performance, is capable of quickly degrading organic pollutants in wastewater, especially pesticides and other organic pollutants into pollution-free materials of H2O, CO2 and the like under the conditions of room temperature, atmospheric pressure and illumination, can be repeatedly utilized for multiple times, and has lasting photocatalytic activity. In addition, the three-dimensional porous structure graphene-cerium dioxide composite photocatalyst can be used as a material for a super capacitor, a lithium-ion battery and a fuel cell and is wide in application prospect.

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 (CexBy) 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.

The invention provides a polyacrylate modified polyvinylidene fluoride film with excellent ultraviolet resistance and a preparation method thereof. The preparation method is characterized by comprising the following steps: firstly, performing hydrolysis deposition on cerium chloride and zinc chloride on the surface of nano-titanium dioxide, so as to obtain nano-titanium dioxide with the surface coated with cerium-doped zinc oxide; treating the surface with a coupling agent KH-550, so as to obtain organic silicone modified anti-ultraviolet particles; polymerizing 2-acrylamide-2-methyl-propanesulfonic acid and hydroxyethyl methylacrylate, so as to obtain a polyacrylate polymer; mixing the polyacrylate polymer and polyvinylidene fluoride in a torque rheometer; finally, performing heat meltingon a mixture obtained after mixing in N, N-dimethylacetamide, defoaming, casting into a film, so as to obtain the polyacrylate modified polyvinylidene fluoride film with excellent ultraviolet resistance. The film provided by the invention has the characteristics of being good in corrosion resistance, chemical stability, ultraviolet radiation resistance, weather resistance and the like.

The invention relates to a preparation method for water-based fluorescence enhanced anti-forgery ink. The present water-based ink cannot realize the characteristics of fluorescence enhancement, restraining and impeding effects for fluorescence attenuation, long fluorescence anti-forgery time, excellent hiding effect, and the like. The preparation method provided by the invention comprises the following steps: firstly, reacting cerium oxide with hydrochloric acid, thereby obtaining solid-state cerous chloride; preparing a cerous chloride alcohol solution, a phenanthroline alcohol solution and an acetylacetone alcohol solution; successively adding the phenanthroline alcohol solution and the acetylacetone alcohol solution into the cerous chloride alcohol solution; filtering and drying, thereby obtaining a complex of transition metal cerium; uniformly mixing and stirring the complex of transition metal cerium, resin and fluorescent powder, and then adding emulsifying agent, pigment, de-foaming agent, dispersing agent, antibacterial agent, wetting agent and flatting agent; and quickly stirring and repeatedly grinding, thereby obtaining the water-based fluorescence enhanced anti-forgery ink. According to the preparation method provided by the invention, the water-base resin is taken as a connecting material, thereby being non-toxic and pollution-free. The preparation method provided by the invention is simple and reliable and can be applied to industrial production.

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 provides a preparation method of an efficient and stable Pt / CeO2-TiO2 catalyst for oxidative degradation of VOCs (Volatile Organic Chemicals). Cheap cerous chloride or cerous nitrate, titanium tetrachloride and a small amount of chloroplatinic acid are used as raw materials; a CeO2-TiO2 composite oxide carrier is prepared by adopting a precipitation method, Pt is loaded by adopting an electron-free deposition method to prepare the Pt / CeO2-TiO2 catalyst, and the optimal molar ratio of CeO2 to TiO2 in the catalyst is 4: 1-1: 1. The catalyst is simple in preparation process and lowin cost. The catalyst prepared by the invention is particularly suitable for catalytic combustion of organic waste gas containing chlorine VOCs or non-chlorine VOCs containing benzene, normal hexane and the like; the complete oxidation temperature of the catalyst to dichloroethane and n-hexane is only about 290 DEG C and 140 DEG C respectively, the catalytic activity is not reduced when dichloroethane and n-hexane coexist, and the catalyst has excellent low-temperature catalytic oxidation degradation activity and stability and good application prospect.

The invention belongs to the technical field of inorganic new materials, and particularly relates to a preparation method of yttrium-stabilized zirconium powder for a structural member. The preparation method comprises mixing a zirconium oxychloride solution, a cerium trichloride solution and a yttrium trichloride solution in proportion, adding organic acid to generate gel, adding an ammonia watersolution to neutralize and precipitate, carrying out washing, filtering and dechlorinating, calcining a filter cake to obtain precursor powder, adding Fe2O3, carrying out ball milling and sanding crushing, adding organic additives such as a binder, uniformly mixing, carrying out spray granulation, and drying to obtain the yttrium-stabilized zirconium powder for the structural member. The preparation method of the yttrium-stabilized zirconium powder for the structural part is simple and convenient in process and high in yield, the produced powder is uniform in particle size distribution, goodin fluidity, stable in shrinkage rate, easy to form and high in green body strength, and fine processing such as cutting, milling and punching can be conducted on green bodies and sintered finished products to produce ceramic products high in strength, good in stability and complex in structure.

The invention provides a photochemical degradable sol composition and a preparation method thereof. The composition comprises the following components in part by weight: 50 parts of water, 0.5 to 1.5 parts of photographic gelatin, 0.5 to 1.5 parts of span 80, 40 to 50 parts of nano anatase titanium white powder, 4 to 8 parts of nano rutile titanium white powder, 5 to 15 parts of mixed light absorbing cyanine dye, 0.5 to 1 part of bismuth nitrate, 0.5 to 1 part of cerous chloride and 1 to 3 parts of nano iron sesquioxide. The degradable sol composition integrates photochemistry, catalysis technology and nano chemistry; sunlight serving as inexhaustible natural resource can be fully utilized and combined with non selectively of modern advanced photochemistry, catalysis technology and nano chemistry on organic waste degradation and oxidation effects; and the method has low cost, is simple and convenient to operate, and is suitable for developing medium and small enterprises.

The invention relates to a preparation method of separating and purifying silicon dioxide and cerous chloride from crystal stone wastes, belonging to the field of resource reuse, and is characterized by the following steps: 1) removing impurity: the crystal stone wastes is added with phosphoric acid as an impurity-removing agent and stirred to obtain a mixture of silicon dioxide and cerium oxide; and 2) separation: the mixture is added with concentrated hydrochloric acid as a separation agent, treated by water bath and filtration, the filtrate is evaporated and crystallized to fully precipitate cerous chloride heptahydrate crystals, which is oxidized to obtain cerium oxide crystals; the filter residues are dried at a temperature of <150 DEG C for 1 to 3 hours to obtain silicon dioxide. The preparation method achieves maximum utilization of resources of solid wastes, can transform trash into treasure and obtain phosphate by-products of high economic value and cerous chloride of high purity and high price, and also has advantages of low processing costs, highly pure target composition and significant economic benefits. The purification process follows the idea of clean production, energy saving and reducing emission so as to avoid the problem of environmental pollution.

The invention relates to a method for preparing high purity nano-ceria by an electrolytic method. The invention aims at the defects of the complex technique, the hard control and the low product purity of the existing method to prepare the ceria and provides a method for preparing the high purity nano-ceria by an electrolytic method which has the advantages of simple technique, low cost and high product purity. The technical scheme in preparing the high purity nano-ceria by an electrolytic method of the invention relates to: the bottom part of an electrolytic slot is provided with an ultrasonic emitting device and an air inlet tube; the top part of the electrolytic slot is provided with an air exhaust tube; cerous chloride liquid is adopted as the electrolytic liquid; both an anode and a cathode adopt titanium matrix platinum electrodes. When electrolyzing, an ultrasonic oscillation device is started, oxygen enters into the electrolytic slot through the air inlet tube; the cathode and the anode are mutually changed according to the frequency of one time for one minute during the electrolytic process for one to three hours, then a deposit is obtained, thus being able to prepare nano-ceria powders after pump filtration and drying.

Processes of preparing anhydrous rare earth metal halides are provided. In some embodiments, the rare earth metal halide is cerium (III) chloride. In other embodiments, the rare earth metal halide is lanthanum chloride.

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.