101results about How to "Solve easy loss" patented technology

The invention discloses an ammonium polyphosphate/SiO2 composite aerogel flame-retardant reinforced timber which comprises a timber and an ammonium polyphosphate/SiO2 composite aerogel in timber pores. The invention also discloses a preparation method of the flame-retardant reinforced timber, which comprises the following steps: pretreating the timber with microwaves to form new flow channels in the timber, thereby enhancing the timber permeability; hydrolyzing the previously prepared ammonium polyphosphate and silicon source by pressure dipping treatment, and introducing the generated uniform sol solution into the timber; and carrying out condensation reaction and normal-pressure drying to generate the ammonium polyphosphate/SiO2 composite aerogel in the timber pore structure in situ. The ammonium polyphosphate/SiO2 composite aerogel flame-retardant reinforced timber has favorable flame-retardant and smoke-inhibition functions, and can effectively prevent the flame retardant from loss. The composite aerogel in the timber pores has the effect of enhancing wear resistance and corrosion resistance. The method can be widely used in flame retardancy, reinforcement and corrosion resistance of the solid wood or composite wood, has the advantages of feasible technical process, cheap raw materials and favorable effect, and is worthy of popularization.

The invention relates to a method for preparing a selectivity-adjustable efficient supported precious-metal core-shell catalyst coated with a metal-organic framework ZIF-8 membrane, and belongs to the technical field of new materials. The method comprises the following steps: coating a pre-prepared supported precious-metal catalyst with a ZIF-8 membrane selective-separation layer, repairing the defect of the membrane layer through polyelectrolyte, adjusting and controlling the membrane forming times to obtain continuous ZIF-8 membranes with different compactnesses, and thereby the catalyst has the adjustable high selectivity. Compared with the same kind of catalyst, the selectivity-adjustable efficient supported precious-metal core-shell catalyst has the advantages of simple preparation process, mild conditions and easiness in large-scale amplification. The selectivity-adjustable efficient supported precious-metal core-shell catalyst solves the problem that a multiphase supported precious-metal catalyst has the low selectivity to reactants and products, and simultaneously is beneficial to relieve the fact that active components of the multiphase supported precious-metal catalyst are easily lost and poisoned.

A kind of grease lubricant used to protect tightwire, the weight content basing on the whole weight of the compound of each component is as following: (1) the proportion of the animal fat is 10-50%. (2) The proportion of hydrogenated oil is 1-10%. (3) The proportion of the wool grease rust-preventing agent is 0.5-8%. (4) Vgetable oil remainder. The hydrogenated oil of above is produced by hydrotreating of the animal oil, and the molecular weight of it is 850-890.The melting point of the wool oil is 38-42DEG C, and the iodine value of it is 18-36. The fat in this invention is kind of grease lubricant used to protect the tightwire which is friendly to the environment, and independent to petroleum raw material, and the biological degradation property of it is very good. It can be smeared on the surface of the tightwire during the process of it, or the hemp center can be dipped in it, it can prevent the rust-eaten of the tightwire, and also can act as a lubricant. The dropping point of the grease lubricant is more than 65DEG C, and it can resolve the problem that the dropping point of the hydrocarbon-based grease lubricant is too low.

The invention relates to a method for improving functionality of wood, in particular to a flame-retardant solid wood composite section improved through processes of wood heat treatment and flame retardant treatment and a manufacturing method thereof, belonging to the technical fields of wood functionality improvement and wood processing. The manufacturing method of the flame-retardant solid wood composite section comprises the steps of: (1) wood chip manufacturing; (2) first stacking and drying; (3) heat treatment improvement; (4) normal-pressure impregnation flame retardant treatment on wood chips; (5) second stacking and drying; and (6) gluing and fixing. By means of the method, the advantages of the wood subjected to the carbonization heat treatment and the flame retardant treatment are combined together and the respective disadvantages are overcome to ensure that the obtained solid wood composite section has the advantages of high dimensional stability, strong decay and weather resistance, good flame retardant effect because of a uniformly permeated flame retardant, simple production facility, low production cost and high wood outturn percentage. The obtained solid wood composite section is a good material applied to indoor structure beams, furniture and flame retardant wood doors.

The present invention relates to an adsorptive separation composite fiber film, a preparation method and uses thereof, wherein the composite fiber film is a nanometer particle/polymer fiber composite film. The concrete method comprises: firstly synthesizing nanometer particle/polymer fiber composite fibers, preparing into a composite fiber film, loading the film into a filter, and carrying out dynamical adsorbing and filtering to remove heavy metal ions in the water. According to the present invention, the preparation method has characteristics of simpleness, green concrete, low cost, high heavy metal waste water treatment efficiency, good selectivity and recycling, and the adsorptive separation composite fiber film can be used for purification and treatment of heavy metals in industrial and domestic wastewater.

The present invention relates to a method for integrated treatment of dyeing wastewater by using magnetic activated carbon. According to the method, an improved magnetic activated carbon adsorption process and an Fe3O4-H2O2 based Fenton-like technology are organically combined based on the preparation of a PAC-Fe3O4 composite material, and a dyeing wastewater treatment technology integrated with adsorption and regeneration is proposed, and the materials after adsorption can be synchronously regenerated by using the Fenton-like technology in the processing system. According to the method, the adsorption property of the PAC-Fe3O4 composite material and the Fe3O4 Fenton-like catalyst characteristic are fully used. At the time that the material performs adsorption effect on the dye pollutants, H2O2 is synchronously added to form a Fe3O4-H2O2 Fenton-like system to perform regeneration, so that the processing ability of the system is effectively improved, and the processing cost is lowered. The advantages of a pure PAC process and a conventional Fenton process are organically combined, so that the shortages that the conventional PAC and the treated wastewater are difficult to separate are easily to be lost, and cannot be regenerated are solved, and the problems that ferric salt needs to be continuously added in the conventional Fenton process, and the sludge output amount is large are improved. The method has the advantages of being simple, efficient, economical and the like, thereby having a large potential market in dyeing wastewater treatment applications.

The invention relates to a multi-enzyme immobilized electrospun fiber membrane used for treating a eutrophic polluted water body. By using an electrospinning technology, a multi-enzyme system which comprises alpha-amylase, hormone sensitive lipase, papain, fungal cellulose, fungal laccase, soybean urease and the like and can decompose various organic matters causing eutrophic water body pollution is immobilized in a polylactic acid electrospun fiber membrane and directly covers the surface of the eutrophic polluted water body to catalytically degrade various nitrogen-containing organic matters, so as to achieve the goal of reducing the eutrophic pollution in the water body. The polylactic acid electrospun fiber membrane which carries the multi-enzyme system can rapidly and conveniently remove typical eutrophic pollutants in the water body in time to rapidly recover water quality. Compared with other eutrophic pollution treatment techniques, the multi-enzyme immobilized electrospun fiber membrane has the advantages of high efficiency and good performance, can be expected to be used for remediation of urban moderate or severe eutrophic polluted water bodies or in the aquiculture field.

The invention relates to a porous carbon load noble metal catalyst and a preparation method thereof. The catalyst is prepared from porous cage-shaped carbon materials and noble metal nanometer particles distributed in the porous cage-shaped carbon materials. The preparation method of the catalyst includes the steps of firstly, adding a dispersing agent solution to noble metal nanometer dispersion liquid, removing supernate through centrifugal separation, and obtaining surface-decorated noble metal nanometer particles; secondly, mixing the surface-decorated noble metal nanometer particles with absolute ethyl alcohol and deionized water, dispersing the mixture evenly through ultrasonic waves, adding ammonia water and tetraethyl orthosilicate, and obtaining noble metal @SiO2 core-shell particles; thirdly, mixing the noble metal @SiO2 core-shell particles with PS micro-balloons, a carbon substrate material and a dilute sulphuric acid solution, dispersing the mixture evenly through ultrasonic waves to have a reaction at a temperature of 120 DEG C to 200 DEG C, conducting full carbonization and thermal treatment, putting the mixture into an HF solution to be treated for 10 h to 15 h after naturally cooling the mixture so that silicon dioxide can be removed, and finally conducting washing and drying to obtain the porous carbon load noble metal catalyst.

The invention relates to a catalyst for producing ethyl orthosilicate by a silicon powder method and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 20%-50% of cuprous oxide, 10%-40% of copper oxide, 10%-40% of copper powder and 10%-30% of catalyst carrier. The preparation method comprises the following steps of: uniformly mixing the active components such as cuprous oxide, copper oxide and copper powder according to the composition of the catalyst; preparing a 30-40% alcohol or aqueous solution of the catalyst carrier; and adding the mixed active components in the alcohol solution of the catalyst carrier, stirring for 1-2 hours, then dripping a small amount of distilled water, continuously stirring for 1-24 hours, and then filtering,thus obtaining filter residue; and drying the filter residue at the temperature of 70-120 DEG C, and roasting for 8-24 hours with air isolation at the temperature of 400-700 DEG C, thus obtaining thecatalyst. The catalyst has the characteristics of high activity and stability, long service life and capability of being utilized repeatedly for multiple times.

The invention discloses a hydrophilic material-doped blended membrane nanoscale zero-valent iron-loading composite material as well as a preparation method and application thereof. The method comprises the steps of (1) synthesizing a hydrophilic material; (2) doping the hydrophilic material during a blended membrane synthesis process; (3) soaking the hydrophilic material-doped blended membrane into a bioinspired polymer solution, and functionalizing; (4) soaking the functionalized hydrophilic material-doped blended membrane into a soluble ferric salt solution, and loading an iron ion onto a boehmite-doped blended membrane; (5) soaking the iron-loading blended membrane into a borohydride solution, thus forming the hydrophilic material-doped blended membrane nanoscale zero-valent iron-loadedcomposite material through a high reduction function. The method is low in cost, and the operation process is simple and convenient; and the prepared nanoscale zero-valent iron particles are good indispersing performance, high in reaction activity and easy to recycle, has a good removal capability on heavy metals, organic dyestuffs and antibiotic wastewater, cannot cause secondary pollution, andhas a wide application prospect in the field of environment pollution remediation.

The invention relates to a method for catalyzing oxidation of phenol and hydrogen peroxide with a selenium-containing catalyst for synthesis of p-benzoquinone. The method is mild in reaction conditions and can be implemented at normal pressure. According to a technical scheme in the invention, the method comprises the following steps: adding phenol, a solvent, the selenium-containing catalyst and hydrogen peroxide into a glass reaction bottle and carrying out a reaction at a certain temperature, wherein analysis results of oxidized liquid show that the conversion rate of phenol is about 30 to 50%, the selectivity of p-benzoquinone is 80 to 90% and resorcinol and ortho-isomers are not produced. High-selectivity preparation of hydroquinone can be realized through hydrogenation reduction of p-benzoquinone.

The invention discloses a carbon-coated and metal nanoparticle-loaded PVDF (Polyvinylidene Fluoride) membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, synthesizing carbon-coated metal nanoparticles; secondly, mixing the carbon-coated metal nanoparticles with polyvinylidene fluoride powder, an organic additive and a dispersion medium and stirring to obtain a casting membrane solution; thirdly, obtaining a target product by a solution phase conversion method. The carbon-coated and metal nanoparticle-loaded PVDF membrane disclosed by the invention disclosed by the invention can efficiently mineralize toxic organic pollutants in a water body and is high in degradation rate; a catalytic membrane reactor is constructed to carry out a catalytic degradation reaction of the organic pollutants; macromolecular organic pollutants are prevented from passing through on the basis of a micronano separation effect of a membrane pore structure, so an interception effect is realized, conversion rate and selectivity of degradation are improved, the technical problems that metal nanoparticles are easy to agglomerate and lose are solved, and potential secondary pollution to the water body is avoided; in addition, the preparation method has the advantages of lower cost, simple process, controllable structure, high maneuverability, easiness for industrial application and the like.

The invention provides an MOF supported metal peroxide catalyst. The catalyst comprises a metal organic skeleton carrier and a metal peroxide species MO(O2)2, wherein M represents Mo6 or W6+. The catalyst is prepared in the mode that in the metal organic skeleton material synthesizing process, MO(O2)2 with catalytic oxidation activity is anchored to a metal organic skeleton material through a pre-modification or post-modification method. According to the catalyst, metal peroxide is highly dispersed on a crystal skeleton, and the metal peroxide species is coordinated with organic ligand based on dipyridyl chelation locus, so that high stability is kept; when applied to an oxidation sweetening reaction, high activity and stability are kept, and the catalyst has important industrial application value.

The invention discloses a small molecule hydrogel-nanoparticle compound drug carrier and application thereof in skin/mucosa drug delivery system. The small molecule hydrogel-nanoparticle compound drugcarrier comprises drug-carrying nanoparticles and small molecule hydrogel, wherein the drug-carrying nanoparticles are dispersed in the small molecule hydrogel, and the surfaces of the nanoparticlesare modified with cell penetrating peptides. The small molecule hydrogel-nanoparticle compound drug carrier is used for skin/mucosa drug delivery, the skin/mucosa and lesion part penetrating performance of drugs can be evidently increased by modifying the surfaces of the nanoparticles with the cell penetrating peptides, and the problem that solution-dosage-form drug delivery is prone to drug lossis solved by the small molecule hydrogel.

Compound amur cork-tree temperature-sensitive gel for treating sore and ulcer and traumatic infection and a preparing method thereof are provided. The temperature-sensitive gel comprises 5-15% by weight of a compound amur cork-tree extract liquid, 18-20% by weight of poloxamer 407, 1.5-2.5% by weight of poloxamer 188, 5-10% by weight of propylene glycol, 5-10% by weight of glycerol, 0.5-1% by weight of ethyl p-hydroxybenzoate and 41.5-65% by weight of distilled water. A problem that gel structures are irreversibly destroyed because traditional Chinese medicine extracts at present are complex in components and react with base auxiliary materials, or because traditional Chinese medicine extract liquids are hypertonic systems and cause exosmosis of water in gel substrate network structures is overcome. A gel substrate adopted can be primarily determined according to physical and chemical properties and dosage forms of effective components.

The invention discloses a carbon-doped TiO2 visible light-responding catalytic film on a glass carrier. The carbon-doped TiO2 visible light-responding catalytic film on the glass carrier is prepared by taking tween 80 as template ions and a carbon source to prepare a non-metallic carbon-doped nano TiO2 photocatalytic film, and loading the non-metallic carbon-doped nano TiO2 photocatalytic film on the glass carrier. The invention further discloses a preparation method of the catalytic film. The TiO2 catalyst film can utilize 400-700nm visible light for photocatalytic reaction and can directly utilize inexhaustible sunlight as a light source; by doping a non-metallic element carbon, separation of TiO2 photo-generated electrons and a hole can be facilitated, so that the catalytic film can fully play an oxidizing and reducing role and the photocatalytic activity can be improved; and the catalytic film is loaded on the glass carrier with stable physical and chemical properties, thereby overcoming the defects of easy loss and difficult recycle of a powdery catalyst in the using process and the like.

The invention belongs to the technical fields of a novel material and a water purifier, and relates to a drinking water arsenic-removal filter core and a production method thereof. The arsenic-removal filter core is obtained by uniformly mixing arsenic adsorption powder, a porous particle arsenic adsorbent, an additive and a binder in proportion, and the materials are molded at proper temperature. A material formula design and a molding technology are used for preparing the arsenic-removal filter core, a nano arsenic-removal active substance is used for being fixed in the filter core, water permeability and current uniformity of the filter core are kept, so that the problems of inconvenient usage, increased cost due to easy loss of the nano arsenic-removal particle and secondary pollution can be solved. The arsenic-removal filter core has the advantages of loose and porous performance, good water permeability, and excellent intensity, the material and water are fully contacted, so that the product has excellent arsenic removal performance.

The invention discloses a hydrotalcite like compound-kaolin composite material which comprises a hydrotalcite like compound sheet and a kaolin substrate. The hydrotalcite like compound sheet grows on the kaolin substrate, an angle between the hydrotalcite like compound sheet and the the kaolin substrate is larger than 0 and smaller than 180 degrees. The invention further discloses a preparation method of the hydrotalcite like compound-kaolin composite material. The preparation method comprises the following steps of (1) conducting pretreatment on the kaolin substrate, and enabling kaolin raw materials or microballoons molded by atomizing to rise at temperature until a high temperature condition to roast; (2) enabling urea and soluble bivalence inorganic salt to be soluble in deionized water, adding the kaolin obtained in the step (1), stirring for warming crystallization at room temperature, using the deionized water to wash, then filtering, and drying to obtain the hydrotalcite like compound-kaolin composite material. The preparation method of the hydrotalcite like compound-kaolin composite material is simple in operation and soft in condition and has wide application prospect. The hydrotalcite like compound sheet in the hydrotalcite like compound-kaolin composite material prepared by using the preparation method has the advantages of being good in orientation, not easy to drop and the like.

The invention discloses a method of preparing a high-level oxidation catalyst based on sulfate radial by utilizing solid waste cobalt ore smelting slag as a raw material, and pickling, modifying and activating the raw material. In the catalysts, the silicon dioxide skeleton in the slag is used as a carrier, and such ions or compounds as cobalt and ferrum are fixedly carried on the granule surfaces through pickling and coprecipitation methods, so that the smelting slag has such characteristics as high-level oxidation, multi-metal concerted catalysis and heterogeneous catalysis, and the like, and a non-homogeneous phase catalyst system formed by the smelting slag enables the smelting slag to be easily separated from a water body. When being applied on industrial sewage treatment, the catalytic oxidation system not only has high catalytic oxidation efficiency, wide pH adaptation range, low metal ion loss quantity and easy separation with water body, but also recycles the cobalt ore slag solid waste to change the waste into valuable, thereby both meeting the sustainable development and the nation call of the energy conservation and emission reduction, and having low cost and is easy to generalize, so that the method in the invention has brilliant application prospect.

The invention discloses a preparation method of a visible light catalytic composite ultrafiltration membrane. The method comprises the following steps: 1, weighing transition metal nitrate and titanium dioxide powder, adding the transition metal nitrate and the titanium dioxide powder into deionized water, mixing uniformly, pouring a polytetrafluoroethylene reaction kettle to perform reaction, cooling to room temperature, centrifugally washing for many times, performing vacuum drying, grinding and sieving to obtain a metal doped titanium dioxide visible light catalyst; 2, blending the light catalyst and a polysulfone membrane material, intensely and mechanically stirring under the water bath condition, and defoaming under the ultrasonic condition to obtain a uniform and bubble-free casting membrane solution; 3, pouring the casting membrane solution at one end of a glass plate, scraping the membrane by a glass stick with two ends tied with copper wires, performing standing, putting into coagulation bath to form a membrane, taking out and soaking into deionized water to obtain the visible light catalytic composite ultrafiltration membrane. By the method, the problem that the powdered catalyst in the current suspension system is liable to lose and difficult to recycle, and the problem of concentrated liquid generated by pure physical interception in the membrane separation technology are solved.

The invention discloses a preparation method of immobilized microorganisms embedded with aerogel, and belongs to the fields of immobilized microorganism technology and environmental functional composite material preparation. The preparation method comprises the following steps: proportionally mixing monomer hydroxyethyl methacrylate, N-methylol acrylamide, polyacrylamide and diisodecyl adipate, and performing a series of treatment to prepare aerogel; and performing mixed culture on the prepared aerogel and bacterial liquid proportionally, uniformly mixing the bacterium-loaded aerogel with themixed liquid, then transferring the aerogel to a saturated calcium chloride solution to be crosslinked and hardened, and then cleaning the surfaces of immobilized spheres with sterile water to prepareimmobilized spheres embedded with the aerogel. The prepared immobilized microorganism spheres embedded with the aerogel have the advantages of large specific surface area, good mass transfer performance, good stability, high mechanical strength, low cost and the like and have wide application prospects in the aspect of environmental pollution remediation.

The invention relates to a method for preparing hydroquinone by oxidizing phenol. The method comprises the following steps: adding the phenol, a solvent and a supported catalyst into an oxidization high-pressure kettle; introducing oxygen with certain pressure and reacting at a specific temperature for certain time; after the materials are cooled, filtering out an oxidization catalyst to obtain an oxidized solution; adding the oxidized solution and a hydrogenation catalyst into a hydrogenation high-pressure kettle; introducing hydrogen and carrying out a catalytic hydrogenation reaction at a certain temperature; after the materials are cooled, filtering out the hydrogenation catalyst to obtain a hydrogenated solution; desolventizing the hydrogenated solution to obtain a mixture of the phenol and the hydroquinone; rectifying the mixture by negative pressure and separating the phenol and the hydroquinone; returning the phenol back to an oxidization procedure to be used as the raw material. The method is simple to operate and the phenol and benzoquinone do not need to be separated, so that the industrial implementation is easy to realize.

The invention discloses a method for treating landfill leachate with a composite photocatalysis bio-adsorbent. The method comprises the following steps: adding the omposite photocatalysis bio-adsorbent into the landfill leachate at a dosage of 20g/L-80g/L by wet weight, performing light vibration and adsorption degradation, separating solid and liquid after reaction is completed, and adjusting pH of the filtrate to neutral to accomplish the treatment of the landfill leachate. The method for treating the landfill leachate with the composite photocatalysis bio-adsorbent has the advantages of simple treatment process and adsorption equipment, convenient operation, very low cost, high adsorption volume, high adsorption efficiency, no pollution, very good treatment effect of the landfill leachate. By virtue of the method, the operation cost of the treatment of the landfill leachate can be effectively reduced, and the landfill leachate can be effectively treated. The method can be widely adopted.