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31results about How to "Not affected by pH" patented technology

Self-support transition metal selenide catalyst as well as preparation method and application thereof

The invention provides a self-support transition metal selenide catalyst as well as a preparation method and application thereof, belongs to the field of alkaline full electrolytic tank water decomposition, and solves the technical problems that the existing catalyst is low in catalytic activity or the catalyst activity is limited by pH value. The preparation method of the self-support transition metal selenide catalyst comprises the following steps: dissolving selenium powder in a sodium borohydride aqueous solution, or adding metal salt of a transition metal element to obtain a mixed solution; then, adding a conductive substrate of the transition metal into the obtained mixed solution for reaction to obtain the self-support transition metal selenide catalyst; or preparing transition metal selenide electrolyte from the metal salt of the transition metal element, selenium dioxide and lithium chloride; then adopting the conductive substrate of the transition metal as a working electrode for carrying out electrodeposition in the obtained transition metal selenide to obtain the self-support transition metal selenide catalyst. According to the invention, the preparation method is free of pH influence, and the prepared selenide catalyst has excellent electro-catalysis hydrogen evolution and oxygen evolution performance when applied in a battery.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Self-supporting transitional metal sulfide catalyst and preparation methods and applications thereof

The present invention provides a self-supporting transitional metal sulfide catalyst and preparation methods and applications thereof, pertaining to the field of alkaline full electrolytic cell water decomposition. A preparation method of the catalyst comprises: mixing a metal salt of a transitional metal element with a sulfur source, and adding a surfactant, a catalyst carrier, and an alkaline solution to obtain a mixed solution; and then adding a transitional metal conductive substrate to the mixed solution to react to obtain a self-supporting transitional metal sulfide catalyst. Alternatively, a preparation method of the catalyst comprises: mixing a metal salt of a transitional metal element with a sulfur source, and a surfactant, a catalyst carrier, and an alkaline solution to obtain a mixed solution; and then with a transitional metal conductive substrate being used as a working electrode, performing electrodeposition in the obtained transitional metal sulfide electrolyte, to obtain a self-supporting transitional metal sulfide catalyst. The present invention also provides the self-supporting transitional metal sulfide catalyst prepared with the above two methods. The prepared sulfide catalyst, when applied in a battery, has excellent performance in electric hydrogen evolution and oxygen evolution.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Deep treatment method of fluorine-containing waste water

The invention discloses a deep treatment method of fluorine-containing waste water and belongs to the technical field of treatment of the fluorine-containing waste water. The deep treatment method comprises the following steps: leading the fluorine-containing waste water to enter a reaction tank 1, regulating the pH (Potential of hydrogen) value of the waste water, staying for 10 min and then introducing upper-layer waste water into a reaction tank 2, adding GMS-F1 and CaF2, stirring for reaction and then introducing upper-layer waste water into a reaction tank 3, adding GMS-F5, stirring for reaction and then introducing upper-layer waste water into a reaction tank 4, adding a flocculating agent, stirring for reaction and then introducing upper-layer waste water into a sloping plate precipitation tank for treatment, and leading supernatant to flow into a buffering tank 1; introducing waste water in the buffering tank 1 into a reaction tank 5, adding the GMS-F5, stirring for reaction and then introducing upper-layer waste water into a reaction tank 6, regulating the pH value of the waste water, staying for 10 min and then introducing upper-layer waste water into a reaction tank 7, adding the flocculating agent, stirring for reaction and then introducing upper-layer waste water into the sloping plate precipitation tank for treatment, and leading supernatant to flow into a buffering tank 2; introducing waste water in the buffering tank 2 into a sand filtering tank, filtering, and then discharging. The deep treatment method disclosed by the invention has the advantage that after the fluorine-containing waste water is treated by the method, the content of fluorine ions in the discharged water can be lower than 1 mg/L.
Owner:山东环瑞生态科技有限公司

Muscular function appliance for preventing and treating early-stage dental-maxillofacial deformities

The invention discloses a muscular function appliance for preventing and treating early-stage dental-maxillofacial deformities. The basic structure of the muscular function appliance comprises a lip and cheek screen, upper and lower tooth eruption rails, lip thorns, a tongue ring, a tongue bracket, breathing holes, a lip ring hole and a lip ring. The appliance mainly corrects the bad maxillofacial muscular functions through the different designs of the parts to influence development of the maxilla and the mandible, the correcting concept is added into the appliance, and therefore the purpose of correcting the dental-maxillofacial deformities is achieved. According to the appliance, development of the maxilla or the mandible is stimulated by adjusting the height of the lip and cheek screen and the positions of the lip thorns according to the pathogenesis and the disease symptoms of a patient; the surface of the appliance is provided with the breathing holes and the lip ring hole (used by being matched with the lip ring), and the breathing holes and the lip ring hole are used for mouth breathing habit correcting and lip muscle training respectively; the tongue ring is mainly used for guiding a tongue body to be placed at the correct position to coordinate the relative position relation of the maxilla and the mandible. The prepared muscular function appliance is better in pertinence, more stable in treatment effect, more convenient to use and capable of meeting the requirements of orthodontics of the patient and clinical application.
Owner:NANJING MEDICAL UNIV

Water-based paint spray mist agglutinant

The invention discloses a water-based paint spray mist agglutinant which comprises an agent A, wherein the agent A is composed of the following components in percentage by weight: 0.1-1.0% of a flocculating agent, 0.5-3.0% of a first assistant, 0.5-5.0% of a preservative, 3.0-5.0% of a first pH regulator and the balance of a first solvent; and the sum of dosage of various components in the agent Ais 100%. Compared with the prior art, the water-based paint spray mist agglutinant disclosed by the invention has the advantages that 1, strong attraction to paint drops is produced by high charge, the paint drops are completely coated after adsorbed by utilizing different secondary affinities of the paint drops, and functional groups in the paint drops are penetrated and destructed by virtue ofchemical actions, so that viscosity is completely eliminated, the coated paint drops are driven to come up or sink, functional groups among the paint particles can be destructed by chemical reactions,so that the paint drops are destabilized, viscosity-eliminated and come up, and the aim of separating the paint drops from water is achieved; 2, the product is not influenced by the pH value during use, and the pH value does not need to be additionally regulated; and 3, the product has effects of inhibiting bacterium growth and killing bacteria, and an additional bactericide is not needed.
Owner:重庆信人科技发展有限公司

Corrosion-resisting pipe for conveying chemicals

The invention discloses a corrosion-resisting pipe for conveying chemicals. The corrosion-resisting pipe is characterized by consisting of the following raw materials in parts by weight: 84-90 parts of pvc (poly vinyl chloride) resin, 6-10 parts of furfural resin, 3-4 parts of diisononyl phthalate, 10-12 parts of acrylonitrile-butadiene-styrene copolymers, 1-2 parts of sodium silicoaluminate, 2-3 parts of bentonite, 2-3 parts of carbon fibers, 0.7-1 part of stannous octoate, 1-2 parts of 1-hydroxyethyl-2-oleic imidazoline, 2-3 parts of oxidized polyethylene wax, and 8-15 parts of composite fillers. The corrosion-resisting pipe has excellent resistance to acid, alkali and corrosion and is not affected by moisture and soil acidity and alkalinity, so that the corrosion-resisting pipe does not need any anticorrosion treatment during pipeline laying.
Owner:SINOMACH GENERAL MACHINERY SCIENCE & TECHNOLOGY CO LTD

Traditional Chinese medicinal composition for treating swollen head syndrome of chickens and preparation method of traditional Chinese medicinal composition

The invention relates to a traditional Chinese medicinal composition for treating swollen head syndrome of chickens and a preparation method of the traditional Chinese medicinal composition. The traditional Chinese medicinal composition consists of the following components in parts by weight: 10-20 parts of honeysuckle flowers, 10-20 parts of radix scutellariae, 15-25 parts of rhizoma bistortae, 10-15 parts of fructus chebulae, 10-15 parts of humifuse euphorbia herb, 10-15 parts of rhizoma atractylodis macrocephalae, 10-15 parts of radix glycyrrhizae and 5-20 parts of fructus rosae laevigatae.The traditional Chinese medicinal composition provided by the invention has functions of resisting bacteria and diminishing inflammation, and resisting viruses; the traditional Chinese medicinal composition is low in toxic and side effects, free from medicine residues and free from drug resistance; the traditional Chinese medicinal composition is easy to absorb and convenient to use; and the traditional Chinese medicinal composition, which is relatively ideal in treating the swollen head syndrome of chickens, conforms to requirements of safe veterinary drugs and guaranteeing the safety of animal-derived food.
Owner:DINGZHENG ANIMAL PHARMA TIANJIN

Traditional Chinese medicinal composition for treating swine salt poisoning and preparation method of traditional Chinese medicinal composition

Te invention relates to a traditional Chinese medicinal composition for treating swine salt poisoning and a preparation method of the traditional Chinese medicinal composition. The traditional Chinese medicinal composition is prepared from the following medicinal materials in parts by weight: 5-15 parts of quick lime, 5-15 parts of herba portulacae, 10-20 parts of mung beans, 5-15 parts of radix trichosanthis, 5-15 parts of tea leaves, 1-10 parts of herba polygoni avicularis, 1-10 parts of herba dianthi, 10-20 parts of licorice root, 5-15 parts of herba pteridis multifidae, 5-15 parts of dried radix puerariae, and 5-15 parts of soybeans. The traditional Chinese medicinal composition has the efficacies of clearing away heat and purging pathogenic fire, as well as inducing diuresis and eliminating toxins, is small in toxic and side effects and free of drug residue, has small possibility of generating drug resistance, is easy to absorb, high in bioavailability, and convenient to use, accords with the requirement of guaranteeing the veterinary medicine safety and the animal-derived food safety, and belongs to an ideal traditional Chinese medicinal composition for treating the swine salt poisoning.
Owner:TIANJIN REBATE SCI & TECH DEV
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