2121results about How to "Mild conditions" patented technology

The invention provides a simple universal nanometer functionalization surface modification method based on o-dihydroxybenzene derivatives. The method comprises that: dopamine is used to perform surface decoration on a basis material for one or more times, then the basis material subjected to surface decoration is subjected to nanometer functionalization decoration for one or more times; and nanometer functional materials such as various organic or inorganic nanometer particles, nanometer wires, nanometer sols, nanometer tubes and the like are fixedly disposed on the surface of the basis material, so that the material surface is improved in hydrophilicity, hydrophobicity, roughness and anti-pollution capability, or the material is enhanced in biocompatibility and performances such as antibiosis, catalysis and the like, or the material is endowed with new conductive, optical, thermodynamical performances and the like and enhanced in mechanical strength.

The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning coating material and a preparation method thereof. The coating material of the invention is prepared by curing and drying nanoparticles with photo-catalytic activity, a low-surface-free-energy polymer and a cross-linking agent at the room temperature, wherein the low-surface-free-energy polymer consists of one or more of polysiloxane fluoride, dimethyl silicone polymer and polyphenylene methyl siloxane, which contain active groups, such as hydroxyl alkoxy group, carbon-carbon double bond, silanol group, siloxy group, and the like; the cross-linking agent is hydrogen-containing silicone oil or aminosilane; and the mass content of the photo-catalytic nanoparticles in the coating ranges from 10 to 60 percent. The coating is formed into a micro-nanostructure by nanoparticle self-organization; a super-hydrophobic self-cleaning coating with lotus effect is prepared from the coating and a cross-linked filming matrix with low surface energy; the persistence of a lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-catalytic decomposition characteristic of an organic pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high weathering resistance andprominent self-cleaning characteristic.

The invention discloses a method for preparing white carbon black by utilizing silicon tetrachloride. The method comprises the following steps: mixing deionized water and low molecular fatty alcohol at the molar ratio of 1:4-4:4, and adding a proper amount of surfactant; slowly adding a certain amount of the silicon tetrachloride at the room temperature; and obtaining the white carbon black through the steps of preparing reaction solution, curing the reaction solution, sedimentation and abstersion, pulpifying and spray drying, wherein the concentration of the silicon tetrachloride is controlled to be 0.2-1.0 mol.1-1, and modifiers such as 0.01-0.1mol.1-1 of Hexamethyl disilazane and the like can be added in the preparation process of the hydrophobic white carbon black. The grain diameter of the prepared white carbon black is 50-350nm and the specific surface area is 100-300m<2>.g-1; and the method has high economic value and the prepared white carbon black has good hydrophobic effect.

The invention relates to a method for preparing large-scale graphene through supercritical carbon dioxide exfoliation. Supercritical carbon dioxide is adopted as an exfoliant, a surfactant is adopted as a dispersant, graphite powder and the dispersant are put in an autoclave, the carbon dioxide is pumped in the autoclave and circularly flows in a supercritical state, and then the pressure is reduced quickly to be normal pressure; the process is repeated so that the materials undergo pressure increment and pressure reduction several times; and the layers of the graphene is controlled by controlling the times of pressure increment and pressure reduction, so as to prepare the large scale graphene. Compared with the prior art, the invention has the advantages as follows: large-scale (hundreds of micrometers) high-quality graphene can be prepared; the method belongs to physical exfoliation, the treatment conditions are mild, and the quality of the graphene cannot be damaged; besides, the carbon dioxide used in the method is nontoxic, cheap and easy to obtain, and the technology is simple.

The invention relates to a preparation method of a star polycarboxylic acid high-performance water reducing agent. Polybasic alcohol and (methyl) acrylic acid used as main raw materials for esterification are esterified and polymerized to prepare the star polycarboxylic acid high-performance water reducing agent material: the (methyl) acrylic acid and polybasic alcohol used as reactants are esterified under the action of a catalyst to firstly prepare a star polymerizable active terminal, and free-radical polymerization reaction is carried out with unsaturated polyethenoxy ether, molecular weight regulator and unsaturated carboxylic acid monomer under the action of an initiator to prepare the star polycarboxylic acid high-performance water reducing agent. The invention is easy to control, and has the advantages of high polymerization degree, low cost and no pollution; the esterification reaction is carried out form an active core, and the free-radical polymerization is carried out to generate the chain arm, thereby implementing the polycarboxylic acid high-performance water reducing agent in a star molecular structure; and under the condition of common doping amount and low doping amount, the star polycarboxylic acid high-performance water reducing agent has better cement paste flowability and holding capacity than the traditional linear and comb polycarboxylic acid water reducing agents, and has favorable cement adaptability and concrete application performance.

The invention provides a modified polypropylene master batch, melt-blow cloth, a preparation method and an application thereof. The modified polypropylene master batch is mainly produced from, by weight, 77-90% of polypropylene, 5-20% of a graphene material and 1-5% of an additive. The graphene material includes any one or more of graphene, graphene oxide and graphene derivative. The additive includes any one or more of a coupling agent, a dispersant and an antioxidant and preferably includes the coupling agent, the dispersant and the antioxidant. The modified polypropylene master batch, when being used for manufacturing the melt-blow cloth, not only improves antibacterial and electrification property but also increases the filtering efficiency and dust capacity of the melt-blow cloth.

The invention relates to a multifunctional double-layer core-shell structure magnetic nano particle. In the invention, a magnetic nano particle with a particle size of 1-300 nm is used as a core and coated with a double-layer shell consisting of a SiO2 layer with a thickness of 1-200 nm and a hydrolyzed silane coupling agent layer is 1-100 nm thick and comprises one or more multifunctional groups; the particle size and the shell layer thickness can be controlled through regulating the volumes, the weight ratios and the reaction time of the magnetic core, a silicon dioxide precursor, a silane coupling agent and a catalyst in a preparation process; the total particle size of the nano particle can be as small as 5-50 nm and as large as 700-800 nm; the nano particle can have superparamagnetism, paramagnetism and ferromagnetism according to the change of the magnetic core particle size; and one or more bioactive molecules can be connected into the shell layer of the magnetic nano particle or to the surface of the shell layer through a chemical method or a physical method. The invention also provides a preparation method of the multifunctional double-layer core-shell structure magnetic nano particle and application thereof. The particle preparation method has the advantages of simplicity, moderate condition, low cost and easy realization of industrial production. The nano particle can obtain different functions through connecting different bioactive molecules and can be applied to the fields of protein enrichment, biological detection, separation and purification, targeted drug carriers, cell imaging and medical imaging.

The invention discloses a preparation method of a nanofluid for improving oil recovery. The preparation method comprises the following steps: taking 2.0-4.0g of nanopowder, adding 60-80mL of deionized water to the nanopowder and carrying out ultrasonic dispersion at a room temperature for 30-60 minutes; dissolving 2.0g of a silane coupling agent in absolute ethyl alcohol; mixing the nano-base solution with the ethanol solution of the silane coupling agent in a three-neck boiling flask, heating while stirring to the range of 70 to 75 DEG C, reacting for 4-6 hours, filtering, washing by using an anhydrous solvent a plurality of times, and drying in a vacuum drying box at 60-70 DEG C for 12 hours to obtain modified nanoparticles; putting 0.1-0.5g of nanoparticles in the three-neck boiling flask, adding 200-300mL of water, heating to the range of 60-75 DEG C by use of a water bath, mixing a surfactant with PEG (Poly Ethylene Glycol), adding 100mL of mixed solution of the surfactant and the PEG, mechanically stirring for 6-8 hours, washing the stirred dispersion 2-3 times, adjusting the pH value to the range of 8-9, and adding deionized water to 1L, thereby obtaining the water-based nanofluid.

The invention discloses a method for hydrothermally synthesizing a porous metal-organic framework under low temperature and normal pressure, which comprises the following steps: 1) bivalent transition metal salt is put into proper amount of distilled water to be dissolved; 2) a multidentate organic ligand is put into proper amount of distilled water, and ammonia (30 percent, W/W) is added into the solution until the organic ligand is dissolved; 3) solutions obtained in step 1) and step 2) are mixed, and diluted by the distilled water; 4) the solution obtained in step 3) reacts for 4 to 24h at a temperature of between 80 and 100 DEG C, and is naturally cooled to room temperature at an environmental temperature to obtain an MOF crystal product; and 5) the MOF crystal product obtained in step 4) is filtered, MOF crystals are colleted and washed by the distilled water and absolute ethyl alcohol respectively, and the product is obtained after the natural drying. By performing a hydrothermal reaction in an ammonia solution, the method has mild conditions needed by the synthesis, less energy consumption and time consumption, and does not need a voltage resistant reactor. Therefore, the method is simpler and has lower cost; and a porous crystal material obtained by the synthesis has potential application value in the fields of gas separation, gas storage and heterogeneous catalysis.

The invention relates to a preparation method of inorganic/organic multi-drug controlled release composite nano fiber scaffold, which includes the steps of preparing drug loading nanoparticle with particle size of 5-500 nm, preparing mixed solution of high molecular polymer and drug, adding multiple drug loading nanoparticles into the polymer solution, ultrasonically stirring, and carrying out electrostatic spinning to obtain inorganic/organic multi-drug controlled release composite nano fiber scaffold with diameter of 50-800 nm. The preparation method provided by the invention has the advantages of mild reaction conditions, simple operation, and easy experimental apparatus, and is in favor or large-scale production; the obtained multi-drug controlled release composite nano fiber scaffold has good stability and good biocompatibility and biodegradability, and can be stored for a long period of time, and the degradation product is non-toxic. The inorganic/organic multi-drug controlled release composite nano fiber scaffold can be widely applied in the fields of tissue engineering, biomedical engineering, drug therapy and the like.

The invention discloses an epoxy resin microcapsule and a preparation method thereof. The epoxy resin microcapsule comprises a capsule core and a capsule wall, wherein, the capsule core is an epoxy resin, and the capsule wall is a composition of an aepoxy acrylate resin, a polymerizable emulsifying agent, a crosslinking agent and an optical initiator; and the polymerization method of the capsule wall is ultraviolet irradiation and film forming through curing. The preparation method for the microcapsule comprises the following steps that: core materials, wall materials and an ultraviolet initiator are added into a water solution which is dissolved with a surfactant in turn under the condition of high-speed stirring; after an oil-in-water emulsion system is prepared by emulsification, ultraviolet light is immediately used for irradiating the emulsion, and the surface compositions of oil-in-water liquid droplets undergo in-situ polymerization and film forming through curing; a great dealof water is added for repeated sedimentation and water scrubbing; and microcapsule products are prepared through vacuum freeze drying of microcapsule deposits. The method has a simple technique, low energy consumption, quick speed and friendly environment. The capsule prepared takes the shape of a regular sphere, has good leak tightness and heat resistance, and can be widely applied to self-repairing of self-setting thread fasteners and thermosetting resin substrate composite materials.

The invention discloses a manufacturing method of electron-grade nickel carbonate through sedimenting sodium carbonate, which is characterized by the following: adopting soluble nickel salt as nickel source and sodium carbonate as sediment; co-flowing nickel salt solution and sodium carbonate solution; controlling pH value, temperature and aging condition; washing; drying; washing again; drying again; grinding into product.

A method for preparing modified maize straw hydrothermal charcoal by adopting KOH comprises the following steps: smashing the maize straw into powder; taking proper amount of maize straw powder, mixing with a distilled water,and conducting hydrothermal reaction in a reaction kettle so as to prepare the maize straw hydrothermal charcoal; mixing the obtained hydrothermal charcoal and a KOH solution, stirring for a period of time, and then conducting filtering, water washing and stoving so as to obtain the modified maize straw hydrothermal charcoal. The method is simple, and facilitates industrialized production; comparing the effect of the prepared modified hydrothermal charcoal with that of the conventional charcoal or a conventional similar charcoal adsorbent, the adsorptivity on heavy metal is greatly improved, and the stability is considerable.

The invention relates to a BiOI/TiO2 heterojunction type photocatalytic material and a preparation method thereof, which belong to the field of photocatalytic materials. A novel narrow band-gap semiconductor BiOI and a broad band-gap semiconductor TiO2 are compounded by a low-temperature soft chemical method to prepare the heterojunction type photocatalytic material; the formation of heterojunction accelerates the transport process of photo-generated carriers, decreases the recombination probability of an electron-hole pair and improves the photocatalytic quantum efficiency, and the heterojunction has good catalytic and degradation performance of organic substances. The heterojunction type photocatalytic material has simple preparation technology, mild conditions, low cost and good industrialized application prospects.

The invention discloses a graphene/Fe-MOFs composite material and a preparation method thereof. Adding oxidized graphene, FeCl3 and terephthalic acid into N, N-dimethyl formamide according to the corresponding ratio of 1-15 g : 100 g: 200 g : 150 ml, ultrasonically dissolving the mixture at a power of 600 W for 1 h, and then controlling the temperature to be at 150 degrees to conduct hydrothermal reduction reaction for 15 h; conducting suction filtration on the obtained reaction liquid, conducting repeated washing and suction filtration on the filter cake with N, N-dimethyl formamide till the filter does not contain incompletely reacted oxidized graphene, FeCl3 and terephthalic acid, controlling the temperature to be at 80 degrees to conduct drying, and then the graphene / Fe-MOFs composite material with good electro-chemical performance is obtained and can be used for super capacitor electrode materials. The graphene / Fe-MOFs composite material is simple and controllable in preparation technology, mild in conditions, low in production cost and suitable for industrial production.

The invention relates to a magnetic graphene oxide composite nanomaterial and a preparation method thereof. The material is prepared from graphene oxide, magnetic nano particles and a polydopamine shell layer; graphene oxide is connected with the magnetic nano particles wrapped by polydopamine, polydopamine serves as a connecting arm between the magnetic nano particles and graphene oxide, and the magnetic nano particles are immobilized on the surface of graphene oxide. When the material is prepared, the magnetic nano particles with stable citric acid are firstly prepared according to a solvothermal method, and then the surfaces of the magnetic nano particles are wrapped by the polydopamine shell layer in an alkaline buffer solution; finally, hydrogen bonds between polydopamine and graphene oxide and pi-pi interact, and the magnetic graphene oxide composite nanomaterial is prepared. The material has the common properties of graphene oxide and the magnetic nano particles, the hydrophilic performance of the material is improved through introduction of polydopamine, and the method is mild in condition and high in expansibility, and preparation is easy and convenient.

The invention relates to a method for preparing graphene/polyaniline laminated films on basis of a layer-by-layer self-assembly technique and belongs to the technical field of composite material preparation. The method includes steps of treating a substrate; soaking the treated substrate in a graphene dispersing agent for a period; taking the substrate out of the graphene dispersing agent and cleaning the substrate with deionized water; soaking the cleaned substrate into polyaniline solution for a period and then taking out the substrate and cleaning the same again; and repeating the steps above to obtain uniform graphene-polyaniline laminated films having regular layer structures. The conductive graphene/polyaniline laminated films prepared by the method are uniform, regular and ultrathin and have controllable structures and properties. The method can be carried out with low-cost and simple equipment under mild conditions, and can be used for the fields of sensors, supercapacitors and the like.

The invention belongs to the technical field of natural polymer modification and discloses a preparation method of a starch and fatty acid compound. The method comprises the following steps: adding de-ionized water into starch and balancing moisture in a closed container; carrying out heat treatment to obtain the starch subjected to wet and hot treatment; then adding a buffering solution to prepare a starch solution; after pre-heating, adding 2 to 5u/g pullulanase liquid to react for 4 to 5 hours; after carrying out enzyme deactivation, centrifuging and separating to obtain enzyme treatment modified starch; then stirring and gelatinizing the starch in a boiled water bath for 25 to 45 minutes and cooling to 60 to 90 DEG C to obtain gelatinized starch; then transferring the gelatinized starch into a homogenizing machine and adding fatty acid to carry out homogenization and mixing; and keeping the heat of the water bath to synthesize for 30 to 40 minutes to obtain the starch and fatty acid compound. According to the preparation method, a greener and more environment-friendly new way is provided for synthesizing the starch and fatty acid compound through wet and hot treatment and controlled enzymolysis treatment by adopting a gelatinizing method.

The invention relates to a bacillus subtilis highly producing tetramethylpyrazine and a method thereof for fermentation producing tetramethylpyrazine, and belongs to the technical field of bio-engineering. The invention discloses a Bacillus subtilis XZ1124 which can highly produce tetramethylpyrazine, and is preserved in CCTCC, and the preservation number is CCTCC NO: M 208157. The strain is made of Maotai-flavor liquor and high temperature Daqu; the strain is identified as Bacillus subtilis based on colony, cell form, physiological and biochemical characteristics and 16S rRNA gene sequence comparative result thereof. The strain can utilizes glucose, sucrose, molasses and soybean cake powder as substrate, and increases the output of tetramethylpyrazine through accumulating a great deal of endogenous precursors, so as to solve the problems of low product density, exogenous adding precursor requirement, and low precursor utilization rate in tetramethylpyrazine production through microbe fermentation. When sucrose and soybean cake powder are used as substrate, 4.08 g/L of tetramethylpyrazine can obtained through shaking culture of the raw material for 120 h at the temperature of 37 DEG C.

The invention discloses an edible film with a continuous antioxidant function and a preparation method and application thereof. Preparation parameters of tea polyphenol-chitosan hydrochloride nanoparticles are adjusted, and the prepared chitosan hydrochloride nanoparticles with different tea polyphenol encapsulation rates and particle sizes are added to a natural edible biological macromolecular film formation matrix so as to form the film. On one hand, the different encapsulation rates can change the proportion of free tea polyphenol to encapsulated tea polyphenol in the film; on the other hand, the nanoparticles in different sizes can adjust structure compactness of the film, and therefore release of the tea polyphenol in the film is coordinated and controlled. According to the edible film with the continuous antioxidant function and the preparation method and the application of the edible film, when the antioxidant film is prepared, release of active substances can be adjusted under the condition that the concentration of the active substances is definite, and the use rate of the active substances in the film is increased.

Said invention provides equality size and stable dispersion chitosan microsphere and microcapsule medicine carrier to protein, polypeptide, anticancer agent, hormone etc hydrophilicity medicine and oil soluble medicine for releasing control and targeting administration. The characteristics are that, 1, equality size and stable dispersion chitosan microsphere and microcapsule medicine carrier is made by dissolving hydrophilicity medicine in aqueous solution of acetic acid, pressuring said water phase into oil phase through microporous membrane to get equality size emulsion drop, 2, dissolving oil soluble medicine in oil solvent and hydrophilicity medicine in aqueous solution of acetic acid, preparing O#-[1]/W colostrum by homogeneous phase emulsifier, pressuring it into oil phase through microporous membrane to obtain equality size composite emulsion drop, solidifying it to obtain equality size and stable dispersion chitosan microsphere and microcapsule medicine carrie. Under optimized condition, the diameter distribution coefficient of microsphere and microcapsule are controlled within 11 % , the diameter are controlled freely in 1-100 micrometer.

The invention provides a hericium erinaceus polysaccharide extraction method with high product yield and good purity. The method comprises that: hericium erinaceus dried powder is added with water, is extracted by 8 to 20 KHz ultrasonic under the temperature of 50 to 80 DEG C for 0.5 to 2.0 hours, and is filtered; the filtrate is hydrated orderly by sufficient cellulose, pectinase and papain, finally is added with hydrogen peroxide to be stirred in heat preservation under the temperature of 30 to 50 DEG C for 0.5 to 1 hour, and is hyperfiltrated by a hyperltration membrane; the components with the molecular weight of more than 10000 dalton are collected, frozen and dried to obtain the hericium erinaceus polysaccharide. The hericium erinaceus polysaccharide extraction method has the advantages that 1. the prepared product has high purity; wherein, the content of Beta-dextran is as high as more than 40 percent and the biological activity is high, and the hericium erinaceus polysaccharide yield can reach 12.2 percent; 2. the hydrogen peroxide is adopted to decolorize, the conditions are mild, the polysaccharide structure is difficult to damage and the by-product is water, the method is green and environment-friendly, and coincides with the production requirements of the health care food.

The invention relates to a method for making hydrogen-containing silicone oil, in particular to a method for making methyl phenyl hydrogen-containing silicone oil for the encapsulation of LEDs. The method is characterized in that the methyl-phenyl cyclic siloxane (Dn<Me, Ph>), the tetramethyl tetraethyl cyclic tetra-siloxane (D4<Me, Et>) and hydrocyclotetrasiloxane (D4<H>) are taken as monomers; under the protection of N2, right amount of an end capping agent is added into the monomer mixture to be copolymerized under the action of a catalyst, after the polymerization, the catalyst is filtered and recycled, the low molecular compound of the obtained clear solution is removed in decompression and high temperature conditions, the clear solution without low molecular compound is cooled to the room temperature, and the target product is obtained. The method has the advantages of available raw materials, low cost, moderate conditions, simple technique, simple operation, environmental protection and convenient industrialization. The product made by the method can be widely applied to the enterprises which manufacture and use the LEDs, etc.

The invention relates to a sodium alginate-graphite phase carbon nitride nano-sheet hybridized composite membrane. The composite membrane is prepared by the steps of firstly, with melamine as the raw material, preparing ultrathin and porous graphite phase carbon nitride nano-sheet by using a hot separation and liquid-phase separation combined method; blending the nano-sheet and sodium alginate to obtain a casting membrane liquid; defoaming, then preparing the membrane by using a spin-coating method; performing cross-linking with a calcium chloride solution; and finally drying to obtain the sodium alginate-graphite phase carbon nitride nano-sheet hybridized composite membrane. According to the hybridized composite membrane, by virtue of the structure characteristic that the graphite phase carbon nitride nano-sheet is planar, ultrathin and porous, the thicknesses of separation layers are reduced; an orderly transmission channel is built; the transmission resistance of water molecule is lowered; the ethyl alcohol molecule is prevented from transmitting; therefore the osmosis and the selectivity of the membrane are improved simultaneously. According to the hybridized composite membrane, the preparation process is simple, raw materials are easily available and the structure is controllable, and the composite membrane is used for ethyl alcohol/water mixture separation, and has relative high osmosis flux and separation coefficient.

The invention discloses a porous carbon loaded nano metal oxide catalyst, a preparation method of catalyst, and a hydrogen storage material applying the catalyst. The preparation method comprises the following steps: (1) immersing an organic metal framework into a mixed solution of furfuryl alcohol and alcohol, and stirring for 12-60 hours under a sealed condition; (2) filtering a product obtained from the step (1) to obtain solid powder, and rising the temperature to 140-165 DEG C under inert atmosphere protection; (3) rising the temperature of the product obtained from the step (1) to 700-1000 DEG C under inert gas flow protection; and keeping the temperature and cooling so as to obtain the porous carbon loaded nano metal oxide catalyst. The preparation method of the catalyst provided by the invention is simple and convenient; the hydrogen storage material in which the catalyst is added has the advantages of low hydrogen discharge temperature, high hydrogen discharge velocity, good hydrogen absorption and discharge reversibility and long circulation service life.

The invention discloses a preparation method of BiVO4-BiOBr photocatalyst has a visible-light response, wherein the catalyst may be used under visible light, ultraviolet light, or sunlight. The preparation method of BiVO4-BiOBr photocatalyst that is in a multilevel nest-like nanostructure and is formed by nanosheets is: heating for 8 to 24 h under an alcohol-heating temperature of 100 to 200 DEG C with pH of 5 to 10. The catalyst of the invention can decompose water-soluble organic pollutant containing chlorine and sulfur, water-soluble organic pollutant of azo, xanthene, and anthraquinone type, and biological contaminant microcystic toxins generated by harmful algal bloom.

The invention relates to a preparation method of a cellulose based 3D printing wire, and belongs to the field of biomass based 3D printing materials. The invention aims to provide a preparation method of a biomass based 3D printing material, which is low in production cost and can implement industrialization easily. The preparation method comprises the following steps: processing a cellulose raw material by virtue of polyethylene glycol (PEG:MW=400) in combination with a machine to prepare a cellulose polyethylene glycol dispersed solution smaller than 10 microns; flushing away polyethylene glycol by using dichloromethane to obtain a dichloromethane suspension of cellulose; adding a certain amount of silane coupling agent to perform surface silanization modification; adding modified cellulose, plasticizer polyethylene glycol and toughening agent solution into a dichloromethane solution of polylactic acid with certain concentration, mixing uniformly, and then recovering to remove a dichloromethane solvent by virtue of a condensing unit; and finally, performing extrusion molding at a certain temperature by virtue of a linear extrusion molding machine to prepare the cellulose based 3D printing wire.

The invention discloses an oil solubility compound-type suspended bed hydrocracking catalyst, wherein the catalyst is prepared by the following steps: 1) enabling compounds of metal elements in the VIB family, the VIIB family or the VIII family in a periodic table of elements as metal sources with alkali metal sulfide or alkali metal hydrosulfide according to the mole ratio of (0.5 to 1)-(2 to 1), thereby obtaining a metal element compound at a reduction state; 2) adding the metal element compound at the reduction state and amine substances into a reaction medium according to the mole ratio of (1:0.6)-(1 to 2), and meanwhile dropwise adding carbon disulfide with the corresponding quantity into the reaction medium according to the mole ratio of (1 to 1)-(2 to1) with the metal element compound at the reduction state, warming to react at the reaction temperature of 30-110 DEG C for 2-10 hours; 3) filtering and washing the product obtained by the step 2) so as to obtain the oil solubility compound-type suspended bed hydrocracking catalyst. The catalyst prepared by the invention can inhibit the coke yield, and improve the light oil yield.

The invention discloses a preparation method of cationic surfactant modified fly ash, which comprises the following steps of: firstly performing pretreatment and hydroxylation treatment on the surface of fly ash to obtain hydroxylated fly ash to obtain a grafting point; then modifying the fly ash by use of a coupling agent; and finally performing grafting reaction with a cationic surfactant polyacrylamide to obtain cationic surfactant modified fly ash. According to the preparation method disclosed by the invention, the polyacrylamide is grafted on the surface of the fly ash, and the adsorption property of the grafted fly ash is greatly changed; particularly the fly ash is applied to a cement-based composite material, and the fracture resistance of the cement-based composite material is obviously improved; and the preparation method disclosed by the invention has the advantages of low reaction temperature, mild conditions, simple after-treatment and low industrialization cost.

The invention discloses a method for preparing high-foamability egg albumen powder by efficiently desalting salted egg albumen, which comprises the following steps of: mixing the salted egg albumen with water, adjusting the pH value of the mixed liquid to 2.5 to 4.0, heating the mixed liquid, adjusting the pH value of the heated liquid to 5.6 to 7.5, and filtering the heated liquid to obtain precipitate; mixing the precipitate with the water, performing homogenization, filtering to obtain the precipitate, and repeating the step once; mixing the obtained precipitate with the water, adding protease to perform enzymolysis, heating the mixed solution for 15 to 30 minutes at the temperature of between 95 and 100 DEG C when the hydrolyzing degree reaches 3 to 6 percent and inactivating the enzyme to end the enzymolysis reaction and obtain enzymolysis liquid; uniformly mixing the enzymolysis liquid with carboxymethyl cellulose (CMC) and spraying and drying to obtain the high-foamability egg albumen powder. The method has the advantages that: the conditions are mild; the protein recovery rate reaches 85 to 90 percent; and the salted egg albumen powder after the desalination has high foamability and no saline and bitter tastes.