38 results about "Cobalt dichloride" patented technology

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.

A process for the desulfurization, and reactivation of a sulfur deactivated catalyst constituted of cobalt composited with a titania support. The sulfur deactivated cobalt titania catalyst is first contacted with a gaseous stream of molecular oxygen at temperature sufficiently high to oxidize the sulfur component of the catalyst. The sulfur oxidized catalyst is next contacted with a liquid, preferably water, to remove the oxide, or oxides of the sulfur. The catalyst is then contacted with a reducing agent, suitably hydrogen, to restore the activity of the catalyst. During the treatment there is no substantial loss, if any, of cobalt from the catalyst.

The invention relates to a preparation method of a nanometre composite material, in particular to the preparation method of a graphene-loaded nanometre cobalt hydroxide (Co(OH)2) composite material. The preparation method of the graphene-loaded nanometre Co(OH)2 composite material comprises the following steps of: 1, mixing a cobalt dichloride 6 hydrogen oxide (CoCl2.6H2O), a graphite oxide and isopropanol to prepare a solution, and carrying out ultrasonic homodisperse on the solution; 2, raising the temperature of the solution under stirring; 3, adding a sodium sulphide (Na2S) and water into the mixed solution in the step 2 for reaction; and 4, centrifuging a black precipitate obtained by the reaction in the step 3, washing, drying and grinding to obtain the graphene-loaded nanometre Co(OH)2 composite material. The preparation method of the graphene-loaded nanometre Co(OH)2 composite material is a soft chemical method which is simple in operation and prepares the graphene-loaded nanometre Co(OH)2 composite material with excellent electrochemical performance in a mild condition.

The invention discloses a preparation method of a cobalt molybdate photocatalyst. The method comprises the following steps: adding 5-10g of cobalt dichloride into 50-100mL of water to prepare a solution; adding 8-11g of sodium molybdate and 1-2g of glycine into the solution; stirring for 10-50min in water bath at the temperature of 60-70 DEG C; continuously stirring for 5-10min, and then transferring the solution into a hydrothermal reactor to react for 5-10h at the temperature of 180-260 DEG C; filtering to obtain a solid; washing three to five times with distilled water; and drying at temperature of 80 DEG C to obtain the cobalt molybdate photocatalyst. The method has the advantages that the obtained cobalt molybdate crystal structure is uniform, high in dispersing performance, and good in catalyzing effect.

The invention discloses a high mechanical strength economical and environmentally friendly desulfurization activated carbon, which is characterized by comprising the following raw materials by weight: 98-105 parts of wooden activated carbon, 35-40 parts of diatomite, 3-4 parts of zinc aluminate, 2.5-3.5 parts of manganese sulfate, 1-2 parts of sodium molybdate, 1-2 parts of cobalt dichloride, 2-3 parts of castor oil, 1-2 parts of butyl naphthalene sulfonate sodium, 2.5-4 parts of polyvinylpyrrolidone, 2-4 parts of waste rubber powder, 7-9 parts of lignite, 20-25 parts of corn cob, 27-31 parts of sand-grass straw, 4-6 parts of an adsorption aid and the right amount of water; by addition of the corn cob and the sand-grass straw, the specific surface area is increased, waste is turned into treasure; by addition of the waste rubber powder and other strength increase materials, the mechanical strength of the prepared activated carbon is high, the prepared activated carbon is not easy to collapse, economical and environmentally friendly, high in desulfurization efficiency, and simple in production process, can greatly reduce the operation cost of dry desulfurization, and is suitable for automobile exhaust gas treatment.

The invention relates to a hydrothermal preparation method for a tin-cobalt alloy negative electrode material of a lithium ion battery, and belongs to the technical field of chemical electrode material manufacturing technology. Dissolve tin dichloride dihydrate and cobalt dichloride hexahydrate in deionized water; add sodium borohydride to deionized water, stir to dissolve completely, and then mix the two solutions; transfer the prepared mixed solution into a closed In the reaction kettle, after the reaction is completed, the reaction kettle is taken out and cooled to room temperature, and the cloudy liquid containing the black precipitate is suction-filtered, washed and dried to obtain the tin-cobalt alloy negative electrode material. The preparation process of the present invention is simple in operation, easy to control the process, low in energy consumption, friendly to the environment, does not produce secondary pollutants, and obtains a tin-cobalt alloy negative electrode material whose main phase is Co3Sn2, which is displayed when used as a lithium ion battery negative electrode material It has a high initial charge-discharge specific capacity and good cycle performance.

The invention discloses a preparing method of bis (cyclopentadienyl) cobalt. The preparing method includes the following steps that Lewis base and cobalt dichloride are reacted to produce coordination compounds, and the coordination compounds and sodium cyclopentadienide are reacted to produce bis (cyclopentadienyl) cobalt. The preparing method has the advantages that the bis (cyclopentadienyl) cobalt is prepared through a method which is simple in process and safe and feasible, and production cost can be greatly reduced.

The invention discloses an efficient nanocrystal colloidal hydrogen production catalyst and a preparation method thereof. The technical scheme is that a cobalt dichloride solution, a g-C3N4 powder ultrasonic dispersion solution and a PVP colloidal solution are mixed according to a certain ratio under the condition of a certain temperature, and then, a nanocrystal colloidal material with g-C3N4/Co3O4 photoresponse reinforced catalytic hydrogen production performance is prepared by using a hydrothermal synthesis method. The preparation method provided by the invention is simple in operation, lowin cost, safe and environment-friendly; and the prepared g-C3N4/Co3O4 nanocrystal colloidal material has relatively small nanocrystal size, good dispersibility and efficient photoresponse reinforcedcatalytic hydrogen production performance.

The invention discloses a preparation method of a molybdenum disulfide supported molybdenum cobalt oxide catalyst. The preparation method comprises the following steps: adding 10-15g of ammonium molybdate into 50-100mL of thioacetamide ethanol solution with the concentration of 1-5mg/L, stirring for 5-30 minutes in water bath at the temperature of 60-70 DEG C, adding 2-5g of cobalt dichloride into a proper amount of NaOH solution until the pH is 10-11, completely precipitating, putting in a hydrothermal reactor, reacting for 5-10 hours at the temperature of 180-200 DEG C, filtering to obtain solids, washing till the solids are neutral, drying at the temperature of 80 DEG C, and roasting for 2 hours at the temperature of 500-650 DEG C, so that the molybdenum disulfide supported molybdenum cobalt oxide catalyst is obtained. The preparation method disclosed by the invention has the advantages that firstly, molybdenum disulfide and molybdenum cobalt oxide are mutually compounded to form a compound with heterojunction structure; and secondly, the supported molybdenum dioxide can help the molybdenum cobalt oxide to be dispersed, and the molybdenum dioxide and the molybdenum cobalt oxide mutually promote, so that the pollutant degradation speed is improved.

The invention relates to a nano ceramic catalyst for acylation. The catalyst is prepared from (a) one of zinc chloride and boron trifluoride or a mixture of the zinc chloride and the boron trifluoride, (b) two of aluminum chloride, ferric trichloride, titanium tetrachloride, nickel chloride and cobalt dichloride or a mixture of more than two of the aluminum chloride, the ferric trichloride, the titanium tetrachloride, the nickel chloride and the cobalt dichloride, and (c) a nano ceramic. The nano ceramic catalyst has porosity and the advantages of being good in selectivity, high in activity, long in service life and recyclable, not polluting environment and the like, and is very suitable for industrial production.

The invention discloses a preparation method of a magnetic synergistic cobalt oxide catalyst. The method sequentially comprises the steps of: under a constant temperature waterbath condition, adding hydrogen peroxide and a NaOH dilute solution dropwise into a FeCl2 solution, performing stirring, then transferring the mixture into an autoclave, further carrying out reaction, and performing naturally cooling to room temperature to obtain solid sediment, adding the solid sediment into a sodium dodecyl benzene sulfonate solution to obtain magnetic organic hydrotalcite; making (3-aminopropyl)triethoxysilane, salicylaldehyde and cobalt chloride into a solution according to (molar ratio) 1:1:1, then adding the magnetic organic hydrotalcite to form cobalt-containing organic complex pillared hydrotalcite; and putting the cobalt-containing organic complex pillared hydrotalcite into a muffle furnace, performing roasting at 400-550DEG C for 6-8h, converting the carbon, nitrogen and other elements therein into gas and making the gas overflow to form a pore channel, thus obtaining the magnetic synergistic cobalt oxide catalyst. The structure is in favor of adsorption and catalysis of pollutants, and is also beneficial to separation.

The invention discloses liquid fertilizer for mango cultivation. The liquid fertilizer comprises, 600mg/L of calcium nitrate, 300mg/L of ammonium sulfate, 500mg/L of potassium dihydrogen phosphate, 200mg/L of magnesium sulfate, 100mg/L of calcium chloride, 10-20mg/L of boric acid, 0.2mg/L of copper sulfate, 50-100mg/L of urea, 50-100mg/L of cobalt dichloride, 5-10mg/L of folic acid, 5-10mg/L of vitamin, 5-10mg/L of plant growth regulator, 50-100mg/L of choline chloride and 30-50mg/L of organic chelating agent. The liquid fertilizer is reasonable in raw material proportion, provides all nutrition needed for mango production, is high in permeability and solubility and can promote mango plants to grow vigorously.

The invention discloses a method for synthesizing 2,3-dichloro-5-trichloromethyl pyridine. The method comprises the following steps: heating 2-chloro-5-chloromethylpyridine as a raw material to reaction temperature of 70-280 DEG C, at 1-10 atmospheric pressure, in the presence of a catalyst, carrying out chlorination reaction on 2-chloro-5-chloromethylpyridine and chlorine and filtering to obtain 2,3-dichloro-5-trichloromethyl pyridine, wherein the catalyst is one or a combination of more selected from ferric chloride, ruthenium trichloride, cobalt dichloride and hexacarbonyl molybdenum. The method has the advantages of cheap raw material and higher purity and yield, and is simple in operation and convenient for after-treatment, and the large-scale industrial production can be performed.

The invention discloses a carborane viologen derivative, a metal supramolecular polymer, a synthesis method and application. Viologen is used as a central core structure, 1,2-bis(4-pyridyl)acetylene is synthesized through a Sonagashira coupling reaction, and then alkynyl is attacked by decaborane to synthesize a carborane viologen precursor A; or alkynyl in bis(4-bromophenyl)acetylene is attackedwith decaborane to synthesize bis(4-bromophenyl)carborane, then a carborane viologen precursor B is synthesized through a Still coupling reaction, and finally the carborane viologen derivative is further obtained through the carborane viologen precursor A or the carborane viologen precursor B. Then, viologen is used as a central core structure, the carborane viologen derivative, ruthenium trichloride, cobalt dichloride or ferrous acetate are used as reaction raw materials, acetic acid is used as a solvent for reflux reaction, and finally, a product in reaction liquid is separated and dried tosynthesize the carborane viologen metal supramolecular polymer.

The invention discloses a preparation method of a cobalt-thiomolybdate photocatalyst. The preparation method comprises the following steps of: adding 5-10g of cobalt dichloride into 50-100mL of waterto prepare into solution, then adding 8-11g of sodium molybdate and 1-2g of glycine into the solution, stirring for 10-50 minutes in water bath with the temperature of 60-70 DEG C, continuously stirring, slowly introducing 0.5-6L of hydrogen sulfide gas under the conditions of 25 DEG C and normal pressure, continuously stirring for 10-20 minutes, then transferring the solution into a hydrothermalreactor, reacting for 5-10 hours at the temperature of 180-260 DEG C, filtering to obtain solid, washing for 3-5 times by using distilled water, and drying at the temperature of 80 DEG C to obtain thecobalt-thiomolybdate photocatalyst. The preparation method disclosed by the invention has the advantages that the obtained cobalt-thiomolybdate photocatalyst is uniform in crystal structure and goodin dispersity and catalytic effect.

The invention discloses a compound liquid fertilizer for promoting early maturity of citruses and a preparation method of the compound liquid fertilizer. The compound liquid fertilizer is prepared from 600mg/L of potassium nitrate, 300mg/L of ammonium sulfate, 500mg/L of monopotassium phosphate, 200mg/L of magnesium sulfate, 100mg/L of calcium chloride, 10-20mg/L of ammonium molybdate, 0.2mg/L ofcopper sulfate, 50-100mg/L of urea, 50-100mg/L of cobalt dichloride, 50-100mg/L of niacin, 5-10mg/L of folic acid, 5-10mg/L of amino acid, 5-10mg/L of a plant growth regulator, 50-100mg/L of choline chloride and 30-50mg/L of an organic chelating agent. By adoption of a reasonable raw material ratio, the compound liquid fertilizer is capable of providing all essential nutrients to growth of citrustrees, high in permeability and solubility and capable of promoting vigorous growth of the citrus trees to realize early maturity.

The invention relates to a moisture-sensitive color-changing wallpaper and a production method thereof, including the production process of ordinary wallpaper, and is characterized in that a color-changing additive is added during the production process of the wallpaper, and its main components are: cobalt dichloride and light calcium carbonate , and color (powder), or cobalt dichloride, ethanol, shellac, rosin, sodium lauryl sulfate, saponin, water, and color (aqueous). The heat-sensitive color-changing wallpaper of the invention has the characteristics of simple and easy production process, different colors can be produced by temperature changes, elegant appearance, and the feeling of being warm in winter and cool in summer, and the like.