51 results about "Reaction matrix" patented technology

The invention discloses a phosphorus-nitrogen containing flame retardant modified silane coupler and a preparation method thereof. The preparation method is characterized by comprising the following steps: taking methylene chloride as a solvent and part of polyhydric alcohol or polyatomic phenol as a reaction matrix, adding a phosphorous compound with active reaction groups dropwise based on the reaction mol ratio, agitating an obtained mixture at room temperature for 2-5h, filtering the obtained mixture to remove the solvent, thus obtaining white solid power; and then taking tetrahydrofuran as a solvent and triethylamine as an acid adding agent, adding siloxane with active functional groups dropwise based on the reaction mol ratio under the protection of inert gas, agitating and reacting at 50-80 DEG C for 5-8h, and filtering and depressurizing the mixture to remove the solvent, thus obtaining the phosphorus-nitrogen containing flame retardant modified silane coupler. As flame retardant elements of phosphorus and nitrogen are introduced in molecules, the phosphorus-nitrogen containing flame retardant modified silane coupler has good flame retardant property.

The invention relates to the field of microorganism and in particular relates to a method for synthesizing nano silver by utilizing Bacillus amyloliquefaciens LSSE-62. The method comprises the following steps of: 1) fermenting and cultivating the Bacillus amyloliquefaciens LSSE-62, and separating to obtain thallus and fermented supernate; and 2) taking the thallus and fermented supernate obtained in the step 1) as reaction matrix, adding AgNO3 solution to cause concentration of the reaction matrix in the obtained mixed solution to be 1-4mg/mL and concentration of AgNO3 to be 1-3mM, and reacting under the condition of sunniness or ultraviolet irradiation, so as to obtain nano silver particles, wherein the preservation number of the Bacillus amyloliquefaciens LSSE-62 is CGMCC No.4157. The synthetic method disclosed by the invention is safe and has no toxic or harm effect, synthesis speed is high, and reaction can be completed within 80-100min, so that the synthetic method is efficient, safe and simple.

The invention discloses a method and equipment for aerobic/anaerobic biofilter biological denitrogenation. Intermitted water supply is carried out for the biofilter, and a denitrogenation process is divided into two processes including a nitrification process and a short-cut denitrification-anaerobic ammonia oxidation coupling process: that is a half of waste water to be treated is pumped into a biofilter for aerated nitrification, ammonia nitrogen is transformed into nitrate nitrogen, at the same time most COD in the waste water is removed, and organic loads in the subsequent reactions are reduced; when the nitrification process ends, aeration is stopped, the original waste water is pumped into the biofilter, degradable organics and ammonia nitrogen are introduced for respectively providing reaction matrixes and electron donors for the short-cut denitrification and the anaerobic ammonia oxidation, and synergistic denitrogenation of denitrifying bacteria and anaerobic ammonium oxidation bacteria is carried in the biofilter. The method overcomes the problem of insufficient carbon sources in traditional biological denitrogenation technology; the low C/N ratio waste water biological denitrogenation method has low sludge outputs without secondary pollution, external carbon sources are not added, and nitrogen removal rate reaches above 90%.

The invention provides a preparation method of a Co-N-C/SiO2 composite nanometer catalyst. The method comprises the following steps: uniformly mixing and sintering cobalt metal precursor salt, a nitrogen-containing organic carbon source and mesoporous silica, so as to obtain the Co-N-C/SiO2 composite nanometer catalyst. In the catalyst, ultra small cobalt metal nanometer particles can be properly stabilized in a carbon layer, proper pore structures and pore diameters can further effectively promote the diffusion and the separation of reaction matrixes and products, and the catalyst has good dispersibility in an aqueous system and further is easy to recycle. The preparation method does not need any solvents, can obtain the composite nanometer catalyst by one step, and is easy and practical. The composite nanometer catalyst prepared through the method does not need any complex pretreatments, can be applied to hydrogen production-hydrogen addition coupling reaction, and shows excellent catalytic activity and stability for preparing phenylamine and derivatives thereof though nitrobenzene compounds.

The invention discloses an aluminum base MOFs/oxidized graphene composite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) uniformly dispersing oxidized graphene in a low-boiling-point organic solvent to obtain oxidized graphene dispersion; (2) dissolving a soluble aluminum salt and an organic ligand in the oxidized graphene dispersion to obtain a reaction matrix solution after the dissolution is complete; (3) heating the reaction matrix solution, and allowing isothermal reaction under a high pressure condition for a period of time to obtain a primary product; and (4) filtering the primary product, washing, and activating to obtain a purified aluminum base organic framework/oxidized graphene composite material. The preparation method is simple, easy to operate, economic and environment-friendly, the reaction time is shortened, the usage of the organic solvent is reduced, and the obtained composite material has better crystal form and properties. Meanwhile, the effect of the composite material to adsorb toluene in the air is significantly effective, and the composite material has good application prospects in the aspect of air pollution treatment.

The invention belongs to the field of material science and engineering, and discloses a method for preparing an Al-based metal organic frame-graphne oxide composite material and application thereof. The method comprises the following steps of: (1) adding an organic ligand and soluble aluminum salt into N,N'-dimethyl formamide, stirring and dissolving to obtain a reaction matrix solution; and (2) adding dried graphene oxide powder into the reaction matrix solution obtained in the step (1) to obtain a reaction mixed solution, heating to react to obtain a primary product of the aluminum-based metal organic frame-graphene oxide composite material, washing, heating and activating to obtain the aluminum-based metal organic frame-graphene oxide composite material. The method is simple and easy to operate, is short in time for the preparing process, can be product in large scale; the prepared material has excellent performance, and can be applied as an adsrobent to removal of methyl orange dye molecules in water.

The invention discloses an ultraviolet light-cured phosphorus-nitrogen-containing halogen-free flame retardant and a preparation method thereof. The preparation method is characterized in that: phenyl dichlorophosphate serving as a reaction matrix is reacted with polyalcohol or polyphenol partially acidified by acrylicacid or methacrylic acid; the product of the reaction is reacted with a nitrogen-containing compound with two reactive amino groups to form a yellow, sticky, transparent, liquid and phosphorus-nitrogen-containing substance which is ultraviolet light-cured monomer of which the molecule has an active double bound and phosphorus-nitrogen flame retardant elements; and the ultraviolet light-cured monomer serving as a reactive flame retardant is added into an ultraviolet light-cured resin substrate to form a transparent coating with high flame retarding efficiency through quick curing in ultraviolet light. The ultraviolet light-cured flame-retardant coating generates 34.0 percent of residue under an air condition at 60 DEG C, and 26.3 percent under a nitrogen condition. The maximum release rate of the ultraviolet light-cured flame-retardant coating is 146.6 W/g. The ultraviolet light-cured halogen-free phosphorus-nitrogen-containing flame retardant can be used for inflaming retarding in wood, textile, plastics, metal or circuit boards.

The invention relates to a flame-retardant polystyrene/layered inorganic nanocomposite and a preparation method thereof, which is characterized in that phenyl dichlorophosphate is taken as a reaction matrix for being reacted with polyol or polyphenol which is partially acrylated or partially methacrylated, and then the reaction with a nitrogen-containing compound with a reactive amino group is carried out, thereby obtaining the flame-retardant comonomer which simultaneously has an active double bond and a phosphorus-nitrogen flame-retardant element; the phosphorus-nitrogen monomer and styreneare used for preparing the flame-retardant polystyrene/layered inorganic nanocomposite through the free radical in-situ intercalation polymerization method in the presence of a layered inorganic; a phosphorus-nitrogen-containing flame retardant which is connected with a polymer molecular chain by the chemical bond way has better compatibility with a resin substrate and is more environment-friendly, and the flame retardant has no migration and no loss; the layered inorganic can further improve the thermal stability and the flame-retardant performance of a polymer substrate; and the flame-retardant polystyrene/layered inorganic nanocomposite can be directly prepared into a flame-retardant polystyrene material and can also be prepared into a flame-retardant masterbatch to be added in other plastics.

The invention discloses a method for producing methane and preparing a fertilizer simultaneously. The method comprises the following steps: (1) mixing excrement and urine of beasts and birds and crop straw at the weight ratio of (3.5-4.5):1, thus obtaining a mixed material; and (2) mixing rice straw charcoal or rice husk charcoal with the mixed material at the weight ratio of (0.5-2.5):10, placing the obtained mixture in an anaerobic fermentation tank, and carrying out fermentation. With the adoption of the method provided by the invention, the gas dredging and medium delivery generated in a reaction matrix can be effectively improved, the utilization efficiency of microbes for the matrix can be improved, and meanwhile, the high-quality fertilizer is produced.

The invention provides a method for improving the fermentation capability of a slurry dry process, belonging to the field of solid waste recycling, which can be used for solving the problems that reacted intermediate products and energy are difficult to transmit and diffuse in a medium resulted from the large viscosity of reaction matrix and high total solid (TS) concentration; slow hydrolysis acidification and low aerogenesis speed are caused by that a large amount of substances difficult to degrade exist in slurry and the further biotransformation is limited by the microbial residue cell-wall structure. In the method, dewatered slurry is placed in microwave of which the frequency is 915MHz and the power is 10-60kW for carrying out pretreatment for 3-10 minutes; the pretreated dewatered slurry is cooled to the selected fermentation temperature, and then mixes with seed slurry uniformly based on the mass ratio of 5: 1-3:1 to obtain a mixture which is placed in an anaerobic fermentation tank for standing for 3-5 days in a sealing and non-stirring state; a stirring motor is started, and the stirring speed is controlled to 10-30r/min; and materials are fed and discharged continuously so as to ensure the materials to stay in the anaerobic fermentation tank for 40-60 days. The method for improving the fermentation capability of the slurry dry process can be used to reduce the slurry viscosity and improve the dry fermentation rate and gas production rate; and in addition, the method for improving the fermentation capability of the slurry dry process can be used to save equipment investment and land occupancy compared with the wet fermentation.

The invention relates to the technical field of biology, in particular to a method for biosynthesizing nano-silver through photoinduction of imperata leaf extract. The method comprises the following steps: 1) picked imperata leaves are cleaned, dried and grinded to powder; ultrapure water is added in the powder for oscillating, extracting and centrifugating to obtain supernatant; and the supernatant is frozen and dried to obtain the imperata leaf extract; and 2) the imperata leaf extract in the step 1) is taken as a reaction matrix; AgNO3 solution is added, so that the concentration of the reaction matrix in obtained mixed solution is 10-50 mg/mL, and the concentration of AgNO3 is 1-3 mM; and nano-silver particles are prepared through reaction under sunlight irradiation or LED lamp irradiation. The biosynthesizing method is safe, environment-friendly, wide in synthetic material source and fast in synthesizing speed, can finish the reaction within 90-120 minutes, and is a green, safe and efficient biosynthesizing method.

The invention discloses a cupric ion fluorescence enhancement type molecular probe and a preparation method as well as application thereof. The molecular formula of the probe is shown in the description; 4-methyl-7-hydroxy coumarin is taken as a fluorescence matrix, and reacts with hexamethylene second-amine; a formyl group is introduced at an ortho-position of hydroxy, and an obtained intermediate reacts with o-ethoxyphenol benzylamine; then nitrogen atoms and oxygen atoms are introduced; meanwhile the fluorescent light of a compound is enabled to close, and a specific reaction with cupric ions can be performed. By introducing the nitrogen atoms and the oxygen atoms for performing specific coordination with the cupric ions in the reaction matrix, a cupric ion sensor can quickly cooperate with the cupric ions in a detection process, so that fluorescent light is increased rapidly, thus realizing detection on the cupric ions and being capable of effectively avoiding the disturbance of other metal ions. The fluorescence probe prepared by the method is a high-selectivity fluorescence enhancement type cupric ion chemosensor simple in structure, cheap and easily available in material, easy to prepare and high in yield.

The invention belongs to the technical field of sewage treatment, and relates to a device and method for obtaining an anaerobic ammonia oxidation matrix from municipal sewage through continuous flow endogenous short-range denitrification. An AOA continuous flow process is used for directly surpassing part of a mud-water mixture in an anaerobic zone to an anoxic zone, and by regulating the ratio ofthe water inlet flow of the municipal sewage to the flow of the surpassed mud-water mixture, the mass concentration ratio of ammonia nitrogen to nitrite nitrogen in effluent is stabilized at 1 to 1.32; and the endogenous denitrification process of GAOs only proceeds to the nitrite stage, the organic carbon source requirements are saved, aerobic phosphorus absorption and denitrification and phosphorus removal are coupled with endogenous short-range denitrification, phosphorus removal, carbon removal and stable nitrite accumulation of the municipal sewage without additional carbon sources are achieved, a stable reaction matrix of the ammonia nitrogen and the nitrite nitrogen is provided for the anaerobic ammonia oxidation process, the problem that the accumulation rate of the nitrite is notprone to being stabilized and maintained during short-range nitrification is solved, and a new idea is provided for practical engineering application of a mainstream anaerobic ammonia oxidation process of the municipal sewage.

The invention relates to nano hydrogel and a preparation method thereof. The nano hydrogel comprises 1-5 parts of a reaction matrix, 1-5 parts of a saccharide compound, 3-20 parts of an alcohol compound, 0.1-0.5 part of an oxidizing agent, 1-5 parts of an alkaline solution, 1-5 parts of a pore-foaming agent, 0.2-1 part of a catalyst, 10-20 parts of an etherifying agent and 10-20 parts of a reaction medium. The nano hydrogel prepared through the preparation method is high in biocompatibility, stable in system, capable of improving the medicine effect of a nano hydrogel carrier and is extremely high in medicine carrying rate and biological antibacterial property.

Chromatography pipette tip having a first vessel and a second vessel which is open at two opposite ends and which, in each instance, has a bottom orifice via which a sample liquid can either be sucked in or expelled. The two vessels are fluidically and sealably connected to one another. A reaction matrix is arranged in one of the two vessels, through which reaction matrix the sample liquid is pushed by means of a pipettor to which the chromatography pipette tip is connected when used as intended. The sample liquid is drawn in and dispensed in opposite directions by the chromatography pipette tip and flows through the reaction matrix only in one direction.

The invention provides a water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis. An embodiment of the water treating method includes: enabling high-purity oxygen to produce ozone by discharging an ozone generator; enabling the ozone to pass through an ozone concentration detector and then enter an ozone contact reactor; ensuring the ozone and a matrix tobe uniformly distributed in a solution through a magnetic stirrer and a microporous aerating head; adding a certain amount of the persulphate into a reaction matrix at one time; and decomposing the rest ozone through an ozone decomposer which is connected with the reactor externally. By the aid of an advanced combined oxidization technology utilizing the ultraviolet rays to synergize with the persulphate in ozone catalysis, atrazine in different water body conditions can be removed efficiently and quickly, and pollutants can be completely mineralized into H2O and CO2 in a short time; by introducing the ultraviolet rays, on one hand, decomposing efficiency and mineralizing efficiency of the ozone are improved, on the other hand, wastewater can be sterilized and disinfected, cost on water treatment is saved, and accordingly the water treating method can be applied to treatment of micro organic pollutants in drinking water, recycled water and even industrial wastewater in the future.

The invention discloses an in-situ synthesis of high purity green 6H-SiC. The high purity green 6H-SiC is obtained by smelting the reaction materials composed of anthracite carbon-based material 0.62-0.65 parts, quartz sand 0.98-1.02 parts, silicon carbide-silica composite material 0.20-0.25 parts and adjuvant industrial salt 0.10-0.15 parts and heat insulating materials composed of anthracite 1.90-2.00 parts and quartz sand 2.80-3.10 parts. The synthesis, fundamentally distinguished from the free condensation principle in the Acheson method, uses SiC fine particles as the condensation and reaction matrix, improves the generation efficiency of SiC, reduces the reaction temperature and enables the smelting of the high purity green SiC at a temperature of 1800-2000 DEG C.

The invention belongs to the technical field of CO2 reduction and immobilization, and discloses a method used for reducing CO2 into carbon-containing compounds taking a heterojunction nano-material Au-Ag/Ag2S as a catalyst through applying a reaction matrix liquid with voltage. The method is capable of inhibiting hydrogen evolution reaction effectively, and increasing the oriented conversion efficiency of CO2 into alcohol products; ethanol Faradic efficiency is as high as 70%, and the application prospect in the field of CO2 green conversion is promising.

The invention discloses a low-temperature baking and drying high-salt-spray-resistant water-based electroplating gloss oil which comprises, by weight, 50-70 parts of waterborne acrylic resin, 10-20 parts of water-based amino resin, 5-10 parts of cosolvent, 0.1-0.5 part of antifoaming agent, 0.5-1 part of leveling agent, 5-10 parts of aqueous pigment and 10-20 parts of deionized water. The water-based amino resin capable of performing self-reinforced curing and emulsion-type waterborne acrylic resin prepolymer are taken as reaction matrix, the deionized water is taken as a displacement solvent,and then combined with various water-based additives, a formulation system can be quickly cured in a low temperature environment (120-150 DEG C); the possibility of volatilization of the low molecular weight resin prepolymer during reaction is extremely low, only water volatilization is performed, and the environmental requirements of low VOC are met. The coating formed by smearing has the advantages of excellent adhesion, high strength and resistance to salt spray corrosion.

The invention discloses a preparation method for a copper nanorod-reinforced asphalt root blocking material applied to a planted roof. According to a technical scheme in the invention, the preparationmethod comprises the following steps: dissolving matrix asphalt with a cosolvent, and carrying out mechanical shearing and stirring to form a reaction matrix; then adding small-molecule monomers, a promoter and a root blocking agent, and carrying out continuous stirring; and adding modified copper nanorods, and performing polymerization and cross-linking of the small-molecule monomers under the action of an initiator so as to finally prepare the root blocking material. The preparation method of the invention realizes the integrated waterproofing and root-blocking construction of the planted roof, and has the advantages of simple process, low production and construction temperature, low production cost, low construction difficulty, friendliness to environment and capacity of effectively improving the tear resistance of the root blocking material.

The invention relates to field of a biological technology, in particular to a method for biologically synthesizing nano silver through a fatsia japonica leaf extract. The method comprises the following steps: 1) washing fatsia japonica leaves for three times, drying at a temperature of 60 DEG C, grinding into power, adding super-pure water, oscillating for 10 minutes at 180 revolutions/minute, centrifuging for 20 minutes at 12000 revolutions/minute, and freezing and drying liquid supernatant to obtain the fatsia japonica leaf extract; 2) taking the fatsia japonica leaf extract obtained in the step 1) as a reaction matrix and adding a AgNo3 solution, so that the concentration of the fatsia japonica leaf extract in an obtained mixed solution is 8-10 mg/mL, and the concentration of the AgNo3 is 0.5-3 mM; reacting under the irradiation conditions of LED (Light Emitting Diode) lamps to obtain nano silver particles. The fatsia japonica leaves used in the biosynthesis method are wide in source; the method is safe and environment-friendly and high in synthesis speed, can finish the reaction within 80-100 minutes and is a green, efficient and safe biosynthesis method.

The invention relates to the field of biological indexes of serum, and more particularly relates to a detection method and kit of serum thiol total oxidation capacity. According to the detection method and kit, a serum thiol total oxidation capacity concept is put forwarded and a measurement method is established. The measurement method comprises the following step: by taking dithiothreitol, polypeptide containing thiol or protein as reaction matrix liquid, and taking dithiobisnitro benzoic acid as an indicator of residual thiol, measuring the total oxidation capacity of thiol in serum. Comprehensive indexes of such a novel development can be helpful for understanding the thiol total oxidation capacity of the body. The detection method disclosed by the invention discovers that the total oxidation capacities of different species of serum thiol have large differences, and the same species of the serum also have different total oxidation capacities on different individuals.

The invention discloses a method for preparing furoic acid by cell catalysis of furfural. The method comprises the following steps: (1) in an oscillating or stirring ventilated reaction system, inoculating gluconobacter oxydans which is 1.0g/L in cell concentration to implement a reaction by taking furfural liquid which is not more than 10g/L in initial substrate concentration as a reaction matrix; (2) adding furfural to the reaction system in a way of semi-continuously or continuously adding materials in batches, controlling furfural concentration in the reaction system within 10g/L until total amount of the added furfural is 39-40g/L, monitoring and regulating a pH value to be not more than 10g/L in real time; (3) and ending the reaction until the furfural in the reaction system is completely consumed to obtain furoic acid liquid. The method disclosed by the invention is free from a metal catalyst or severe acid and alkali conditions; moreover, the furfural as a substrate is completely consumed and is high in conversion rate; a furoic acid product is high in purity, easy to separate and refine, and wastewater treatment is simple; the concentration of the furoic acid product exceeds 40g/L under the conditions that a consumption rate of the substrate furfural is 100% and the conversion rate of the furoic acid product exceeds 96%.