113 results about "Cobaltous chloride" patented technology

The invention relates to a method for preparation of a phenolic compound by lignin direct hydrogenolysis adopting hydrogen produced in situ by a solvent as a hydrogen donor under catalysis effects. The method comprises the following steps of adding lignin, catalysts and a solvent into a pressure-resistant container, carrying out a reaction process at a temperature of 150-350 DEG C for 1-20h and carrying out filtration and extraction separation. The method has a lignin conversion rate of more than 50% and phenol selectivity of more than 85% and can produce main products such as 4-propylguaiacol, 4-propylsyringol, 4-propylphenol, propenylguaiacol, syringol and allylphenol. The catalysts used by the method comprise palladium chloride, ruthenium chloride, cobaltous chloride, phospho-tungstic acid, nickel molybdate, barium molybdate, Pd / TiO2, Ru / TiO2 and Au / TiO2, a mass ratio of lignin to the catalysts is in a range of 1: 0.03 to 1: 1 and a mass ratio of lignin to the hydrogen donor is in a range of 1: 50 to 1: 150. The related lignin hydrogenolysis process has a simple technology and can be used for production of high-added value phenolic compounds by a biomass route.

The present invention provides a mineral compound type licking brick for cattle and sheep and its preparation method. Every kg of licking brick contains 0.15-0.3g of ferrous sulfate, 0.15-0.3g of zinc sulfate, 0.1-0.2g of copper sulfate, 0.2-0.3g of manganese sulfate, 0.01-0.02g of sodium selenite, 0.05-0.3g of potassium iodide, 0.03-0.08g of cobaltous chloride, 0.1-0.3g of magnesium oxide, 0.02-0.03g of nano zinc oxide and copper sulfate mixture, 6-10g of chromium nicotinate, 30-150g of sodium sulfate, 40-100g of calcium hydrogen phosphate, 200-400g of edible salt, 200-400g of solidifying agent, 50-200g of carrier and 30-70g of treacle.

the invention discloses an urea synergist and a preparation method thereof. The urea synergist comprises following raw materials, by weight, 150 to 200 parts of ammonium sulfate, 120 to 160 parts of potassium dihydrogen phosphate, 10 to 15 parts of ammonium molybdate, 25 to 35 parts of boric acid, 5 to 10 parts of cobaltous chloride, 5 to 10 parts of nickel sulfate, 20 to 30 parts of ethylene diamine tetraacetic acid, 30 to 40 parts of zinc sulfate, 20 to 30 parts of enteromorpha dried powder, 10 to 15 parts of potassium humate fulvate acid, 15 to 25 parts of vulcanic ash, 10 to 15 parts of tea seed cake powder, 50 to 100 parts of modified zeolite powder, and 3 to 6 parts of compound sodium nitrophenolate. The urea synergist is capable of increasing fertilizer efficiency and nitrogen use efficiency of urea, prolonging fertilizer validity period, promoting crop rapid growth, increasing drought resistance and disease resistance, increasing yield significantly, improving crop quality, reducing application amount, reducing additional fertilizers, reducing labor and fertilizer amount, reducing planting cost, and increasing economic benefits of crops.

The invention relates to transition metal tungstate, and concretely relates to a method for preparing a CdS / CoWO4 heterojunction composite photocatalyst by taking sodium hydroxide, sodium tungstate and cobalt nitrate as raw materials. The method comprises the following steps: taking a proper amount of sodium tungstate, adding the sodium tungstate in a cobaltous chloride-containing solution, adding a certain amount of sodium hydroxide while stirring, adjusting the pH value of the solution to 8, performing a hydrothermal reaction at the temperature of 180 DEG C for 12 hours, alternatively cleaning ethanol used for precipitation and deionized water for three times; performing ultrasonic disperse on CoWO4 in deionized water, adding equal amount of thiourea and cadmium acetate, continuously stirring the materials and uniformly mixing the materials, performing the hydrothermal reaction at the temperature of 180 DEG C for 24 hours, after the reaction is complete, filtering a precipitate, washing the precipitate, and drying the precipitate to obtain the CdS / CoWO4 heterojunction composite photocatalyst. The composite photocatalyst has good photocatalytic activity proved by methylene blue (MB) degradation experiment under visible light.

The invention relates to a method for preparing Ni@C or Co@C core-shell nanoparticles. The method comprises the steps: (1) adding nickel chloride or cobalt chloride into an isopropanol aqueous solution, adding nitrilotriacetic acid, and stirring for 1 hour at room temperature, so as to obtain a mixed solution; (2) transferring the mixed solution to a reactor, placing the reactor into an air-blasting drying oven, carrying out heat preservation for 6 hours at the temperature of 180 DEG C, cooling, then, separating a product, cleaning and drying in vacuum, so as to obtain a precursor; (3) putting the precursor into a tubular furnace, heating to the temperature of 500-600 DEG C at the heating rate of 2 DEG C / min, and carrying out heat preservation for 2 hours, thereby obtaining a black product, namely the Ni@C or Co@C core-shell nanoparticles. The method has the advantages that the method is simple in process, low in energy consumption, low in cost and free from environmental pollution, and the in-situ synthesis of the Ni@C or Co@C core-shell nanoparticles is realized; the prepared core-shell nanoparticles have porous structures and are larger in specific surface area and narrower in pore size distribution, thereby being a promising catalyst or energy storage material.

The invention discloses a preparation method of a compound microelement nutrient capable of enhancing activity of activated sludge in a sewage treatment device for treating single waste water. Zinc sulfate, cupric sulfate, nickelous chloride, boric acid, cobaltous chloride, manganese chloride, sodium molybdate and sodium selenate are used as the main raw materials, and hydrolysis reaction of proteins and chelation reaction of metallic elements are performed by using organic / inorganic compound acid to form an organic acid / amino acid compound chelate. Microelement salts with different concentrations can be selected for chelation according to different water qualities and different biochemical treatment ways of sewage. The invention is a chelate containing multiple microelements capable of promoting microbial metabolism and enzyme activity.

The present invention provides a high protein compound type licking brick for cattle and sheep and its preparation method. Every kg of licking brick contains 0.21-0.35g of ferrous sulfate, 0.21-0.35g of zinc sulfate, 0.14-0.21g of copper sulfate, 0.24-0.35g of manganese sulfate, 0.01-0.02g of sodium selenite, 0.07-0.35g of potassium iodide, 0.03-0.07g of cobaltous chloride, 0.14-0.35g of magnesium oxide, 0.24-0.38g of nano zinc oxide and copper sulfate mixture, 6-8g of chromium nicotinate, 30-150g of sodium sulfate, 50-100g of calcium hydrogen phosphate, 50-200g of carrier, 200-300g of edible salt, 200-300g of solidifying agent, 30-60g of treacle, 100-150g of urea, 30-60g of urea phosphate and 3-7g of physiological regulating and controlling agent.

The invention relates to a horseradish peroxidase black developer, and a preparation method and an application thereof, and belongs to the technical field of biology. The raw materials of the horseradish peroxidase black developer comprise: 4-CN, DAB, ammonium nickel sulfate, cobaltous chloride, imidazole, polyoxyethylene octyl phenyl ether, boric acid, MgCl2, MnCl2, sodium nitroferricyanide, betaine, gelatin, tetrahydrofuran, acetone, dextran sulfate, 1*TBS and H2O2. The horseradish peroxidase black developer is obtained by uniformly mixing a certain amount of the raw materials. By using the horseradish peroxidase black developer, the color development of a horseradish peroxidase has the advantages of high sensitivity of DAB and good color-difference visual sense effect of 4-CN at the same time, and the color substance is a black deposition with a strong background contrast, and therefore the result determine is convenient.

The invention discloses an electrolysis type sterilization and disinfection device as well as a preparation method and an application thereof and in particular relates to a swimming pool sterilization and disinfection device based on a coating functional nanometer composite ceramic electrode material and a using method thereof. The preparation method comprises the following steps: uniformly mixing chloroiridic acid, cobalt chloride, cobaltous oxide, citric acid and ethylene glycol according to a molar ratio of (0.1-0.5):(0.01-0.2):(0.01-0.2):(0.3-0.7):(12-20), coating the materials on the surface of a metal electrode plate, baking, and sintering, thereby obtaining a functional electrode which has a nanometer composite ceramic coating and is used for the electrolysis type sterilization and disinfection device; and assembling the functional electrode into a functional module for sterilization and disinfection, putting the functional module into a swimming pool, and connecting the functional module with a power supply control module. Lots of hydroxyl radicals are generated by virtue of the action of electrolyzed water at the electrode of the functional module, and the water in the swimming pool is sterilized, disinfected and purified under circulative convection of the water. The electrolysis type sterilization and disinfection device provided by the invention is exquisite in structure, good in sterilization, disinfection and purification effect and convenient to mount and use, does not have any toxic or side effect and can replace the conventional disinfection method in the conventional swimming pool.

The invention discloses a medicinal oxygen enrichment coated fertilizer which is prepared from the following raw materials in parts by weight: 13 to 15 parts of raw ginger residues, 2 to 3 parts of an EM microbial agent, 33 to 35 parts of waste tobacco materials, 25 to 28 parts of sesame cake meal, 10 to 12 parts of sweet potato leaf powder, 1 to 2 parts of chitosan, 1 to 2 parts of cobaltous chloride, 3 to 5 parts of calcium ammonium nitrate, 4 to 5 parts of oyster shell powder, 12 to 14 parts of urea, 18 to 19 parts of 30% hydrogen peroxide solution, 1 to 2 parts of laxogenin powder, 0.5 to 0.6 part of butyl acrylate, 1 to 2 parts of sodium dihydrogen phosphate dry powder, 1.2 to 1.5 parts of nano-zinc oxide and a proper amount of water. Various biological antibacterial insect repellent materials such as the waste tobacco materials, the raw ginger residues and the microbial agent are added in the fertilizer disclosed by the invention; nicotine and beneficial microorganisms which are contained in the biological antibacterial insect repellent materials can effectively suppress the activities of pathogenic bacteria and pests, and a microenvironment suitable for the growth of crops can be created; the effect of nutritional supplement can be achieved, and the medicinal oxygen enrichment coated fertilizer can replace application of part of chemical pesticides; therefore, the safety of the soil and the crops are guaranteed, and the pesticide and fertilizer dual effects are achieved.

The invention relates to the technical field of paint and specifically discloses water-based environmental-protection color-changing art paint with an automatic temperature regulation function and a preparation method thereof. The water-based environmental-protection color-changing art paint with an automatic temperature regulation function comprises the following raw materials (by weight): 30-40parts of a modified acrylic emulsion, 5-15 parts of a polyurethane microencapsulated phase-change material, 4-6 parts of azo polyurethane, 1-2 parts of molybdenum disulfide, 5-10 parts of cobaltous chloride, 0.5-1.5 parts of a pH regulator, 0.1-0.5 part of a bactericide, 0.1-0.5 part of a mildew inhibitor, 0.1-0.5 part of an antifreezing agent, 0.1-0.5 part of a wetting agent, 0.1-1 part of a dispersant, 5-10 parts of a coalescing agent, 0.1-1 part of a thickening agent and 20-30 parts of deionized water. The water-based environmental-protection color-changing art paint with an automatic temperature regulation function has strong paint film adhesion, has excellent water resistance and scrubbing resistance, can effectively reduce VOC content, and has color-changing function and intelligenttemperature regulation function.