38 results about "Cobalt dichloride" patented technology

The invention discloses a 2-chloro-5-tirfluoromethylpyridine and a synthetic method thereof. The synthetic method of the 2-chloro-5-trifluoromethylpyridine comprises the following steps of: (1) feeding 3-methylpyridine into a vaporizer to vaporize the 3-methylpyridine; (2) adding a catalyst into a reactor and heating the reactor to a reaction temperature, and feeding chlorine gas and hydrogen fluoride gas into the reactor; and (3) by utilizing nitrogen as a carrier gas, carrying the vaporized 3-methylpyridine into the reactor so as to be subjected to reaction, and condensing, purifying and separating the gas after reaction, so that 2-chloro-5-trifluoromethylpyridine and 2-chloro-3-trifluoromethylpyridine are obtained. According to the synthetic method disclosed by the invention, the cobalt dichloride catalyst is available and is lower in price, industrialization is easy to realize, catalytic selectivity to two target products is high, and the yield is high; and nitrogen is adopted as the carrier gas, and the nitrogen is available, low in cost and safer and has less possibility of influencing the environment, so that the synthetic method disclosed by the invention is beneficial to industrial production.

The invention relates to a norbornene and 2,5-dihydro-2,5-dimethoxy furan binary polymerization catalyst and a binary polymerization method. A preparation method of the catalyst comprises the following steps: in a dry inert gas atmosphere container, dissolving cobalt dichloride and ligand into a first solvent so as to obtain a mixed solution; dropping butyl lithium into the mixed solution at a rotation speed of 200-600rpm, continuously stirring for 30-60 minutes at 30-60 DEG C, steaming off the first solvent which accounts for 1 / 2-3 / 4 of the volume, leaving to stand for 3-8 hours so as to obtain a solid crystal, and filtering so as to obtain a cobalt-lithium complex catalyst; putting a norbornene monomer and a 2,5-dihydro-2,5-dimethoxy furan monomer into a high-pressure kettle which is vacuumed and introduced with nitrogen for multiple times, and dissolving the components with a second solvent; performing a reaction on the cobalt-lithium complex catalyst for 1-6 hours at 20-150 DEG C at the pressure of 1-8MPa; and washing a product obtained from the reaction, thereby obtaining a biopolymer.

The invention provides a sea-urchin-shaped hiberarchy cobaltosic oxide nanosphere and a preparing method thereof. The preparing method comprises the following steps of: mixing cobalt dichloride water solution with glycerol, adding urea into the mixture, reacting, removing impurities, burning, and obtaining the sea-urchin-shaped hiberarchy cobaltosic oxide nanosphere. According to the sea-urchin-shaped hiberarchy cobaltosic oxide nanosphere prepared by the method, the horsehide-shaped hiberarchy has abundant gaps, a large amount of pore ways of which the inner parts are communicated and a larger specific surface area, thus a lot of novel physicochemical characteristics which are generated in a coupling way can be owned, and the sea-urchin-shaped hiberarchy cobaltosic oxide nanosphere can be widely applied to the fields of electrochemistry, catalysis, biosensing, air-sensitive and magnetic materials.

The invention discloses a preparation method of a platinum-cobalt alloy nano electrocatalyst. The preparation method comprises the following steps: dissolving a chloroplatinic acid aqueous solution and cobalt dichloride in ethanol, and carrying out ultrasonic dispersion for 15-30 minutes; dropwise adding triethylamine, and continuously carrying out ultrasonic dispersion for 15-30 minutes until thesolution is turbid and uniform, so as to obtain a mixed solution; ultrasonically and uniformly dispersing carbon black ECP-600 into absolute ethyl alcohol, and performing ultrasonic dispersing for 1hto obtain carbon black slurry; adding the mixed solution into carbon black slurry, and carrying out ultrasonic dispersion to obtain a precursor solution; adding a sodium borohydride ethanol solutioninto the precursor solution obtained in the step 3 under 1,000rmp, and carrying out a stirring reaction for 1h; and carrying out the filtering, washing and drying to obtain the platinum-cobalt alloy nano-catalyst. The PtCo alloy nano electrocatalyst is synthesized from cheap raw materials; after the Co is added, the electrochemical activity area and the oxygen reduction reaction of the electrocatalyst are obviously improved by proper material addition amounts of the reducing agent and the alkaline complexing agent.

The present invention relates to the optical lens technology field, especially to an optical lens without optical return. The lens is made of the raw materials, parts by weight, consisting of the quartz sand of 52-58 parts, the alum of 4-8 parts, the sodium carbonate of 10-13 parts, the nanometer silicon dioxide of 4-6 parts, the modified graphene of 8-12 parts, the lithium hydrate of 4-6 parts, the hafnium boride of 7.5-8 parts, the potassium chloride of 8-10 parts, the vanadium pentoxide 5-8 parts, the iron carbide of 5-8 parts, the barium silicide of 4-6 parts, the tungsten silicide of 1-2 parts, the cobalt dioxide of 4-5.5 parts and the vitrification fiber of 2.5-3 parts. The lens is good in the diffraction to the ray of light and very low in optical return, is very suitable for the shooting usage in the highlight, and is low in the lens image drifting.

The invention discloses a Dendrobium officinale culture solution and belongs to the technical field of agricultural planting. The culture solution comprises the following ingredients: potassium nitrate, ammonium nitrate, magnesium sulfate, manganese sulfate, zinc sulfate, monopotassium phosphate, copper sulfate, potassium iodide, cobalt dichloride, boric acid, sodium molybdate, vitamin VB1, vitamin VB6, vitamin VB5, glycine, ferrous sulfate, disodium ethylenediamine tetraacetic acid, calcium chloride, naphthylacetic acid, mashed banana, mashed potato, white sugar, inositol, and powdered agar. The dendrobium officinale culture solution is reasonable in compatibility, can provide comprehensive nutrition for a Dendrobium officinale stem, fast promote the stem to grow out of a root, increase the polysaccharide content and the amino acid content in the Dendrobium officinale, shorten the time for culturing the Dendrobium officinale stem to a complete plant to about 25 days, and significantly improve the transplanting survival rate of the Dendrobium officinale.

The invention discloses a method for synthesizing a phthalocyanine blue dye represented by a formula (1). The method comprises the following steps: (a) mixing ammonium chloride, cobalt chloride, a catalyst and a reaction solvent dichlorotoluene, heating and dehydrating; (b) cooling the mixture obtained in the step (a), then adding phthalic anhydride and urea, dehydrating, and then heating for reaction; (c) distilling the mixture obtained in the step (b), and recovering dichlorotoluene to obtain a crude product cobalt dichloride phthalocyanine; and (d) carrying out a reaction on the crude product cobalt dichloride phthalocyanine obtained in the step (c) with N,N-dimethyl-1,3-propane diamine, and then carrying out filter pressing, water washing and drying, so as to obtain the cobalt dichloride phthalocyanine. The synthesis method has the characteristics of simple production process, low three-waste yield, high product yield and good quality, and has good economic and social benefits.

The chemical formula of the tetrathiourea cobalt dichloride compound is CoCl2 (CS (NH2) 2) 4, the crystal form of the tetrathiourea cobalt dichloride compound is of a single pure-phase tetragonal structure, the single crystal size of the tetrathiourea cobalt dichloride compound is centimeter level, the space group of the tetrathiourea cobalt dichloride compound is P42 / n, the cell parameters of the tetrathiourea cobalt dichloride compound are alpha = 90 degrees, beta = 90 degrees and gamma = 90 degrees, and the density of the tetrathiourea cobalt dichloride compound is 434.32 g / cm < 3 >. The tetrathiourea cobalt dichloride compound provided by the invention is a novel pure-phase organic tetragonal structure compound; according to the spontaneous nucleation method, centimeter-level transparent single crystal particles can be obtained, the operation is simple, the cost is low, the growth speed is high, the optical quality is high, and the like.

The invention relates to a river revetment ecological pollution filtering structure, in particular to a UHPC combined structure multifunctional ecological revetment system. Including steps and drainage grooves, the steps and drainage grooves are hollow box-type structures, multiple steps are installed in the shape of steps, and the drainage grooves are installed obliquely on one side of the step-like steps; the side of the steps is provided with drainage holes II, and the sides of the drainage grooves are connected with the drainage Drainage hole Ⅰ is set at the position corresponding to hole Ⅱ; the water in the step flows into the drainage groove through drainage hole Ⅱ and drainage hole Ⅰ, and the water is discharged through the inclined drainage groove; the material of the step and drainage groove is mixed with dichloride Cobalt UHPC. This application uses white cement, recycled colored glass powder, recycled colored glass particles, cobalt dichloride, etc. to prepare colorful UHPC materials that can predict the weather. It has good decorative functions. Cobalt dichloride will turn pink in rainy days. When dry, it will turn purple or blue due to different air humidity. It has the function of forecasting weather and can provide weather warning for tourists.

A class of carborane viologen derivatives and metallosupramolecular polymers thereof, synthesis method and application of the present invention, with viologen as the central core structure, synthesize 1,2-bis(4-pyridine) through Sonagashira coupling reaction Acetylene, then decanaborane attacks its alkyne group to synthesize carborane viologen precursor A, or uses decanaborane to attack the alkyne group in bis(4-bromophenyl) acetylene to synthesize bis(4-bromophenyl) ) carborane, and then synthesize carborane viologen precursor B through Still coupling reaction, and finally obtain carborane viologen derivatives through carborane viologen precursor A or B. Subsequently, viologen is used as the central core structure, carborane viologen derivatives and ruthenium trichloride, cobalt dichloride or ferrous acetate are used as reaction raw materials, and acetic acid is used as a solvent for reflux reaction, and the product in the final reaction solution Carborane viologen metal supramolecular polymers were synthesized after separation and drying.

The invention discloses a nano-powder method capable of preparing spinel-structured nano-cobalt ferrite CoFe2O4 at relatively low temperature. The preparation method of the nano-cobalt ferrite CoFe2O4 with spinel structure of the present invention is: after weighing iron trichloride and cobalt dichloride in proportion, mix and prepare aqueous solution A, prepare NaOH or KOH alkali solution, stir to Add N2H4.H2O dropwise to obtain solution B; quickly stir the aqueous solution A obtained in step 1 at 20~40°C, and slowly add the mixed solution B prepared in step 2) into aqueous solution A to react to obtain black Precipitation of cobalt ferrite CoFe2O4 powder with spinel structure.

The invention provides a preparation technology of cobaltocene. The preparation technology comprises the following steps: (1) reacting cobalt dichloride with a metal compound containing alkyloxy in an oxygen-free first alcoholic solvent to obtain a cobalt compound containing alkyloxy; (2) reacting the alkyloxy-containing cobalt compound obtained in the step (1) with a cyclopentadiene monomer in a second alcoholic solvent to obtain a mixed solution containing cobaltocene, and carrying out distillation to remove the solvent to obtain a coarse product of cobaltocene; (3) dissolving the cobaltocene coarse product obtained in the step (2) into a non-proton solvent, filtering, adding an ether solvent into the condensed filtrate, and carrying out recrystallization to obtain cobaltocene solids. The raw materials used in the provided preparation technology all have a wide source and low price. The reagents, which need strict reaction conditions, such as metal sodium, amino sodium, and the like, are not used in the provided preparation technology. Moreover, the reaction conditions are mild, the operation is convenient and safe, the production cost is low, thus the preparation technology is very suitable for industrial production, and the cobaltocene product is high-purity solid crystals.

The invention discloses a platinum-loaded nano cage-shaped zirconium oxide-cobaltosic oxide solid solution as well as preparation and application thereof in toluene thermocatalytic treatment. A zirconium oxide-cobaltosic oxide solid solution nanocage material is prepared by taking a newly prepared cuprous oxide nanocube as a template and zirconium oxychloride octahydrate and cobalt dichloride hexahydrate as metal precursors through ion exchange, etching and calcining; a certain amount of platinum acetylacetonate is added as a metal precursor, and the zirconium oxide-cobaltosic oxide nanocage composite material loaded with a certain amount of platinum is obtained through magnetic stirring, ultrasonic stirring and an ethylene glycol reduction method. The platinum-loaded nano cage-shaped zirconium oxide-cobaltosic oxide solid solution composite material disclosed by the invention has a relatively good thermocatalytic effect on toluene gas, can achieve complete catalytic oxidation of low-concentration toluene at a low temperature. In addition, the use amount of precious metal is small, the cost is saved, and the solid solution has great research significance and a certain application prospect for solving the problem of toluene pollution gas in the air environment.