74results about How to "Good channel structure" patented technology

The invention discloses a three-dimensional nitrogen-boron co-doped graphene aerogel preparation method, which comprises: (1) preparing graphene oxide by using an improved Hummers method; (2) preparing polyhydroxy boron nitride by using an atom substitution method; and (3) preparing a nitrogen-boron co-doped graphene hydrogel having a three-dimensional structure by using the graphene oxide as a substrate, by using the polyhydroxy boron nitride as a nitrogen source and a boron source through a solvothermal method, and carrying out freeze-drying to obtain the composite aerogel. Compared to the pure graphene gel, the composite material of the present invention has characteristics of large specific surface area and good pore channel structure.; and by doping the nitrogen atom and the boron atom, the material has the more active sites so as to provide wide application prospect.

The invention relates to the field of functional materials, in particular to a porous polymer material with an ultra-high specific surface area, a preparation method thereof and use thereof in gas storage or liquid adsorption. The porous polymer material with an ultra-high specific surface area is poly(tetraphenylmethane) of which the molecular formula is (C(Ph)4)n and the structure is shown below.

Asymmetrical polysulfone ultrafiltering membrane is first prepared via phase transferring process using chloromethylated polysulfone as base material and is then hydrolyzed to activate and reacted directly or indirectly with hydroxyethyl cellulose solution to form the composite polysulfone-hydroxyethyl cellulose membrane. The preparation process is characterized by the hydrolysis in alkali water solution at 50-90 deg.c to produce hydroxymethyl polysulfone membrane. The prepared composite asymmetrical polysulfone-hydroxyethyl cellulose membrane has coupled hydroxyethyl cellulose amount up to 90-160 mg to each gram polysulfone membrane. The composite membrane has excellent hydrophilicity, low non-specific adsorption, high mechanical strength and ideal pore structure and may be used widely in affinity ultrafiltration.

The invention belongs to the crossing field of inorganic chemistry, organic chemistry and material chemistry, and specifically relates to an isomorphic porous rare-earth metal-organic framework material, a preparation method and application thereof in natural gas storage, particularly methane storage. In the structural formula of the rare-earth metal-organic framework material as shown below, RE3+ is one of Sc3+, Y3+, Yb3+ or Lu3+, and X is one of H, NH2, F, Cl, Br or I. The material has high thermal stability, excellent porous channel structure and good natural gas storage property, thus being capable of being widely applied to the automobile energy field.

The invention provides a nitrogen-doped carbon-based metal monoatomic catalyst as well as a preparation method and application thereof. A hard template method is selected to prepare the metal monoatomic catalyst, an amino-containing organic body and a chlorine-containing organic body are used as polymerization monomers, a transition metal salt is used as a metal source, a ratio relationship of a template, the organic monomers and the metal salt and reaction conditions are precisely regulated and controlled, so that in-situ polymerization of the organic monomers on the surface of the template and simultaneous chelating of transition metal ions can be realized to prepare the highly exposed monoatomic metal catalyst. The preparation method of the catalyst provided by the invention can ensurethe load capacity of the monoatomic metal to the greatest extent, and the condition that a nitrogen-doped carbon material wraps a metal oxide can be avoided through reasonable regulation and control of reparation conditions; and in addition, the Fenton catalyst prepared by the method has the advantages of high activity, a low metal loss rate and strong regeneration ability.

A method for preparing a spherical porous alumina carrier is characterized in that the preparing steps include dissolving aluminium hydroxide by a hydrochloric acid or sulfuric acid solution to obtain an aluminum ion acid aqueous solution; dropwise introducing a sodium hydroxide solution into the obtained acid aqueous solution in a hydrothermal system, performing a punchy stirring, finally stabilizing the potential of hydrogen (pH) value in a range between 3.0 and 5.0, and then performing an ageing treatment at the normal temperature; vigorously stirring a solution after ageing in the hydrothermal system, rapidly adding a template agent solution, and then introducing a reaction auxiliary; continuously stirring and reacting the above mixed system completely in the hydrothermal system; obtaining a precursor powder by a spray drying after fully washing and filtering with deionized water; and calcining the precursor powder to obtain spherical porous activated aluminium oxide. By means of the method, the prepared spherical porous alumina carrier is good in pore passage structure, large in pore volume and specific surface area and capable of meeting industrial application requirements of a heterogeneous catalysis, a tail gas purification and an adsorption separation.

The invention relates to a graphene-based flexile self-support mixed gel electrode and a preparation method thereof. In preparation, graphene oxide is reduced by adopting a hydrothermal method firstlyto obtain a graphene dispersion liquid; next, an active material and the graphene dispersion liquid are mixed uniformly to obtain a mixed dispersion object; and finally, the mixed dispersion object is subjected to suction filtration and washing to obtain the graphene-based flexile self-support mixed gel electrode. Compared with the prior art, graphene is adopted in the invention to replace a conductive agent, a binder and a current collector in the conventional electrode, so that the a self-support mixed gel electrode thin film with high flexibility is obtained; and the electrode has excellent specific capacity and rate capability, can be applicable to multiple active materials and solution systems, and has relatively high application prospect in the fields of a battery, a supercapacitorand other energy storage systems or other functional composite materials.

The invention provides a composite sintered filter element based on a geological material. The filter element consists of the following components in parts by mass: 20-80 parts of modified medical stone, 12-60 parts of modified zeolite, 5-20 parts of modified lava, 4-8 parts of china clay, 3-10 parts of corn starch granules and 2-5 parts of bentonite. The invention also provides a method for preparing the composite sintered filter element. The method comprises the following steps: dosing, mixing raw materials, molding and firing. According to the composite sintered filter element provided by the invention, the pollutants such as TN, TP, residual chlorine, rust, bacteria and heavy metals in the water body can be removed under the condition that the natural water molecule structure is not damaged, and specific elements beneficial to the human body are released.

The invention provides a geomaterial-based zeolite molecular sieve composite rectorite water purification ceramic which is composed of a main material and an auxiliary material, wherein the particle sizes of the main material and auxiliary material are respectively 220-1200 meshes. The main material is composed of the following components in parts by mass: 40-80 parts of modified rectorite, 12-60 parts of zeolite and 25-50 parts of modified kaolin. The auxiliary material is composed of the following components in parts by mass: 10-40 parts of talcum, 8-10 parts of alpha-Al2O3, 4-8 parts of argil, 8-15 parts of celestite, 15-30 parts of pore forming agent and 1-3 parts of diluter. The invention also provides a preparation method of the geomaterial-based zeolite molecular sieve composite rectorite water purification ceramic. The filter element prepared by the method can remove heavy metals, TN (total nitrogen), TP (total phosphorus), bacteria and other pollutants in the water body by utilizing the molecular sieving effect and cation exchange, and meanwhile, release specific elements which are beneficial to the human body.

The low concentration heavy metal removal method by sodium alginate embedding heat-activated activated sludge, which pertains to heavy metal waste water disposal method, comprises the following steppes: treating the activated sludge from municipal sewage plant with scouring, centrifugal separation and drying under pressurization to deactivate it; embedding it with sodium alginate(CaCl2) to get immobilization calcium alginate ball(CA); filling fixed reactor with CA in certain density; continuously treating low concentration waste water containing mixing heavy metal such as Cd2+, Pb2+, Cu2+ and Zn2+; and selectively washing CA ball by hydrochloric acid to get mixing heavy metal adsorbed on CA ball. Heavy metal is retained while sorbent material revived to reuse. The invention has the advantages of high efficiency and economical and practical property.

The invention discloses a preparation method of an octahedron-shaped cobaltosic oxide anode material for a lithium ion battery. During the preparation process of such a sample, the octahedron-shaped cobaltosic oxide anode material with a porous structure is obtained by using a soft-template-assisted sol-gel method. Such the cobaltosic oxide sample with the internal tunnel structure and the unique octahedron morphology is capable of improving infiltration capability of an electrolyte and buffering volume change during the discharging / charging process of lithium ions, and has higher lithium storage capacity and good cycle stability. The preparation method has the advantages of mild reaction conditions, simplicity and controllability, easy quantity production.

The invention relates to an N-doped porous carbon loaded Fe2O3 composite material and a preparation method thereof. The composite material is prepared in the following steps: preparing a crosslinkingcomplex of 4-vinylpyridine (a monomer or a polymer) and FeCl3.6H2O; putting the crosslinking complex into a tube furnace for high-temperature carbonization-activation; naturally cooling to obtain a carbonization product; finally, taking out the carbonization product, and washing and filtering the carbonization product, so as to obtain the N-doped porous carbon loaded Fe2O3 composite material. According to the simple method, Fe2O3 nanoclusters are embedded into a N-doped porous carbon skeleton, so that the dispersity and the stability of the Fe2O3 nanoclusters can be effectively improved; an N-doped porous carbon carrier is large in specific surface area and excellent in porous structure, and the reactivity and the biocompatibility of the Fe2O3 nanoclusters can be effectively improved due to the doping of nitrogen atoms; the loaded Fe2O3 nanoclusters are uniform in dimension and controllable in size. The N-doped porous carbon loaded Fe2O3 composite material has extensive application prospect in the fields of magnetism, sensing, energy storage and conversion, catalyzing and the like.

The invention discloses a sound-insulating environment-friendly material used for decoration and a production method of the sound-insulating environment-friendly material used for decoration. The sound-insulating environment-friendly material comprises a hard sound-insulating layer, a sound-absorbing layer and a protective layer, wherein the sound-absorbing layer is arranged between the hard sound-insulating layer and the protective layer, the hard sound-insulating layer is arranged on the face opposite to an internal space, the protective layer is arranged on the face close to the internal space, and lamination bulges are arranged on the hard sound-insulating layer, so that effects on an external space are reduced, and the lamination bulges can reduce resonance between a wall and the hardsound-insulating layer; and the sound-absorbing layer comprises two layers of foamed polypropylene thin layers and a lamination fiber layer arranged between the two layers of foamed polypropylene thin layers, the protective layer is a foamed polypropylene sheet, and the lamination fiber layer is provided with winding small holes which communicate, thus a good effect of attenuating high-frequencynoise can be achieved, and closed hole structures of the foamed polypropylene sheet can insulate noise from low and medium frequency to medium and high frequency, so that broad-band noise is insulatedand absorbed.

The invention provides a preparation method for Au-Ce / AlTiOx applied to NO+CO reaction and belongs to the technical field of a catalytic material and a nanometer material. The preparation method comprises the following steps: preparing a titanium-aluminum oxide carrier of the catalyst according to a triblock copolymer template method; taking chloroauric acid as a gold precursor; loading the gold on the carrier through a deposition precipitation process; highly dispersing nanometer gold grains on the carrier; and introducing Ce by utilizing an impregnation method, thereby acquiring the Au-Ce / AlTiOx catalyst. The preparation method provided by the invention is simple; the reaction condition is easily controlled; the equipment requirement is low; the prepared Au-Ce / AlTiOx material grain has a diameter of 10nm and a specific surface area of 370m<2> / g; and the reaction test conditions are as follows: 500ppm NO, 500ppm CO and He serve as balancing gases, the total flow of flue gas is 300ml / min, and the denitration catalytic efficiency at 300 DEG C reaches 100%.

The invention relates to a preparation method of a productive propylene fluidized catalytic cracking (FCC) catalyst. The preparation method comprises the following steps of: mixing and pulping 530 parts by weight of H-ZSM-5 molecular sieve, 20 to 40 parts by weight of USY molecular sieve, 40 to 70 parts by weight of natural clay and 5 to 20 parts by weight of a binder for 30 to 60 minutes to obtain a mixture, wherein the adding amount of the binder is counted on the basis of silica; standing the pulped mixture for 1 to 4 hours, continuously pulping for 10 to 30 minutes, naturally drying, and drying in a drying oven at 100 to 120 DEG C for 4 to 8 hours; placing the dried product into a muffle furnace, heating to 500 to 650 DEG C, roasting for 2 to 6 hours and naturally cooling to prepare the productive propylene FCC catalyst of 100 to 200 meshes. The productive propylene FCC catalyst prepared by the method provided by the invention has the advantages of high conversion rate of heavy oil, high propylene selectivity and low yield of dry gas and coke. In addition, the preparation method of the catalyst is simple and low in cost and has good industrial application prospect.

The invention discloses a method for removing dye pollutants by utilizing a silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst. According to the method, the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst is utilized to catalytically treat the dye pollutants, wherein the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst comprises carbon nitride,sulfur-doped carbon nitride is formed by doping sulfur elements into the carbon nitride and the surface of the sulfur-doped carbon nitride is modified with silver chromate. According to the invention,the dye pollutants can be degraded into carbon dioxide and water, in the manner of adopting the silver chromate / sulfur-doped carbon nitride Z-shaped photocatalyst for catalytically treating the dye pollutants, so as to realize the effective removal of the dye pollutants. The method disclosed by the invention has the advantages of simple process, convenience in operation, high treating efficiency,excellent removing effect, and the like, has high application value and wide application scope and is suitable for large-scale application.

The invention discloses a nano-iron oxide loaded reticular porous heavy metal adsorption material and a preparation method. The method includes: firstly taking diallylamine and chloroethanol as raw materials, and adopting water as the solvent to synthesize diallyl ethylol amine, then subjecting the diallyl ethylol amine and terminal position dibromoalkane to quaternization to prepare bis(brominated diallyl hydroxyethyl alkylammonium) monomer; and then synthesizing a mesh porous material by means of free radical aqueous solution polymerization, then immersing the material into a ferric salt solution, conducting in situ synthesis of a hydroxyl-oxygen complex of Fe by controlling the Fe (III) hydrolysis, then converting the complex into iron oxide and loading the iron oxide on the porous material. The adsorption material provided by the invention has a large and regular pore structure, has good permeability to wastewater and high treatment efficiency. Due to high stability and dispersion of nano-iron oxide, the adsorption material has a high adsorption surface area, and the adsorption effect is improved. The product in the invention has the advantages of excellent elution regeneration performance, easy recovery of heavy metals, and long service life cycle, etc., thus being suitable for treatment of various heavy metal wastewater.

The invention discloses a synthetic method of a sepiolite / nano TiO2 composite material. According to the method, sepiolite and tetrabutyl titanate are taken as raw materials, and the sepiolite / nano TiO2 composite material is synthesized with an in-situ polymerization method. The method comprises the steps as follows: 1), the sepiolite, the tetrabutyl titanate and ethyl alcohol are mixed, stirred, dissolved and subjected to ultrasonic dispersion; 2), the temperature is raised gradually until the ethyl alcohol is volatilized thoroughly, hydrochloric acid and water are added, heating is performed continuously, and the water is volatilized, so that a dried solid is obtained; and 3), the dried solid is washed for a plurality of times and then heated and dried, a dried component is obtained, then the dried component is calcined, and powder, namely, the sepiolite / nano TiO2 composite material, is obtained. With the adoption of the method, the composite material which has a good formaldehyde-removing function can be prepared.

The invention relates to a soil remediation agent, a soil remediation material and a preparation method. The soil remediation agent is prepared from the following raw materials: biomass charcoal, vermiculite, zeolite, pyrite cinder, attapulgite powder, fulvate, ammonium carbonate and an additive. According to the soil remediation agent, through reaction of the biomass charcoal and the pyrite cinder, iron in the pyrite cinder is reduced, Fe < 3 + > and Fe < 2 + > can exchange with Si < 4 + > in zeolite, vermiculite and attapulgite powder, and therefore the cation exchange capacity of the obtained soil remediation agent is improved; moreover, the soil remediation agent can load more nutrient substances, the additive can be slowly released, and the soil remediation material prepared from thesoil remediation agent can effectively improve the air permeability and the water retention rate of soil.

The invention relates to a preparation method of a productive propylene fluidized catalytic cracking (FCC) catalyst. The preparation method comprises the following steps of: mixing and pulping 530 parts by weight of H-ZSM-5 molecular sieve, 20 to 40 parts by weight of USY molecular sieve, 40 to 70 parts by weight of natural clay and 5 to 20 parts by weight of a binder for 30 to 60 minutes to obtain a mixture, wherein the adding amount of the binder is counted on the basis of silica; standing the pulped mixture for 1 to 4 hours, continuously pulping for 10 to 30 minutes, naturally drying, and drying in a drying oven at 100 to 120 DEG C for 4 to 8 hours; placing the dried product into a muffle furnace, heating to 500 to 650 DEG C, roasting for 2 to 6 hours and naturally cooling to prepare the productive propylene FCC catalyst of 100 to 200 meshes. The productive propylene FCC catalyst prepared by the method provided by the invention has the advantages of high conversion rate of heavy oil, high propylene selectivity and low yield of dry gas and coke. In addition, the preparation method of the catalyst is simple and low in cost and has good industrial application prospect.

The invention discloses a formaldehyde eliminating coating with dual functions of adsorption and decomposition, which solves the problem that the existing coatings release harmful substances such as formaldehyde into air and have no function in eliminating formaldehyde. The formaldehyde eliminating coating comprises the following components by weight percent: 25-30% of coarse whiting, 10-15% of emulsion, 4-10% of calcined kaolin, 4-10% of washed kaolin, 4-10% of titanium dioxide, 4-10% of sepiolite or nanometer TiO2 composite material, 0.1-0.6% of dispersing agent, 0.1-0.6% of wetting agent, 0.1-0.6% of antifoaming agent, 0.1-0.6% of multifunctional assistant, 0.1-0.6% of mildew preventive, 0.1-0.6% of coalescing agent, 0.1-0.6% of antifreezing agent, 0.1-0.6% of bactericide, 0.1-0.6% of thickener, and 25-30% of water. The invention also provides a preparation method of the coating. The coating has very strong function in eliminating formaldehyde, and is safe and reliable.

The invention relates to the technical field of carbon materials, particularly to licorice root residue graded porous carbon, a preparation method and applications thereof. According to the present invention, the preparation method has simple steps and is suitable for industrialized production; by using licorice root residue as a precursor, the resource reuse is achieved; and the licorice root residue graded porous carbon prepared by the preparation method has characteristics of high specific surface area and reasonable pore size distribution, and has high energy density when the licorice rootresidue graded porous carbon is used as an electrode material.

The invention discloses an efficient heavy-metal-ion absorbent material and a preparation method thereof. The preparation method comprises the following steps: by taking diallylamine, halogenated ethanol, halogenated acetone or halogenated ethyl acetate as raw materials, and taking water as a reaction medium, preparing substituted tertiary diallylamine under an alkaline condition, and introducing -OH, -CO, -COOR and the like having relatively affinity action on heavy metal ions in molecules; purifying for refinining, and then performing quaternary ammonium with end-site dibromoalkane in a polar organic solvent for synthesizing monomer molecules containing two groups of diallyl quaternary ammonium salt groups in the molecules; and by taking water-soluble azo initiator as an initiator, synthesizing the heavy-metal absorbent material in a manner of aqueous solution polymerization. The absorbent material disclosed by the invention is good in permeability, strong in adsorption capacity, excellent in heavy metal recovery, elution regeneration and cyclic use performance, suitable for adsorption treatments on a plurality of types of heavy-metal-ion wastewater, and wide in popularization and application values.

The invention relates to a sulfur-doped hard carbon material, its preparation method and a potassium ion battery as a negative electrode. The hard carbon material has a porous structure, and the sulfur atoms are at least partially distributed inside the hard carbon material. The preparation method of the hard carbon material comprises: (1) acid-washing high-sulfur coal, and then immersing in an alkaline solution to obtain a pre-product; (2) heat-treating the pre-product under a protective atmosphere to obtain Hard carbon material; (3) soaking, washing, filtering and drying the hard carbon material in acid solution. The invention uses high-sulfur coal as raw material, and the pore size of the prepared hard carbon material can meet the requirements of potassium ion intercalation / extraction. At the same time, the sulfur element is in-situ self-doped on the surface of the material and in the carbon matrix, endowing the material with a new Electrochemical activity and more ideal pore structure. The sulfur element distribution in the carbon material prepared by the invention is more uniform, and the production cost is lower.

The invention discloses low-bitterness L-menthol, belongs to the technical field of preparation of L-menthol, and aims to solve the problems that the sweetness of L-menthol is unstable, and continuous cooling feeling cannot be kept. The L-menthol is prepared from the following raw materials in parts by weight: 22-34 parts of L-menthol, 15-20 parts of mesoporous silica microspheres, 8-10 parts of a modified sweetening agent, 10-20 parts of deionized water, 10-15 parts of sodium alginate, 20-25 parts of maltodextrin, 2-3 parts of glucose and 2-3 parts of glycerol. The invention also discloses a preparation method of the L-menthol. According to the invention, the L-menthol is loaded on the mesoporous silica microspheres; the surface of the obtained microspheres is coated with a layer of modified sweetening agent film; the bitter taste of the L-menthol in the mouth is obviously reduced; and the film of the modified sweetening agent is also beneficial to the controllable slow release of the L-menthol, so that the continuous cooling feeling is kept.

The invention provides a novel synthesis method for 5-[10-(9-carbosyl anthryl)]-isophthalic acid. A diazotization bromination reaction is conducted on 5-amino-1,3-benzenedicarboxylic acid dimethyl ester to synthesize a compound A, namely, 5-bromine-1,3-benzenedicarboxylic acid dimethyl ester, and catalysts are added to 5-bromine-1,3-benzenedicarboxylic acid dimethyl ester under the condition of nitrogen protection to make 5-bromine-1,3-benzenedicarboxylic acid dimethyl ester react with bis(pinacolato)diboron so as to generate a compound B, namely, 3,5-bis(methoxycarbonylethyl)phenylboronic acid pinacol ester. In addition, anthracene-9-carboxylic acid is bromized to obtain a compound C, namely, 10-bromine-9-carboxylic acid, the compound C is subjected to methyl esterification to generate a compound D, namely, 10-bromine-9-anthracene methyl formate, and the compound D and the compound B are subjected to a nitrogen protection reaction under the effect of catalysts to generate a compound E, namely, 5-[10-(9-methoxycarbonyl group anthryl)]-benzenedicarboxylic acid dimethyl ester, and a target compound F, namely, 5-[10-(9-carboxyl anthryl)]-isophthalic acid through a hydrolysis reaction. The target compound F is shown in the figure.

The invention provides a chestnut shell-based biomass carbon material as well as a preparation method and application thereof, and belongs to the technical field of carbon materials. The method comprises the following steps: firstly, reacting chestnut shell powder with an organic acid by adopting a hydrothermal method to obtain a hydrothermal carbon material; then putting the hydrothermal carbon material into an alkaline solution, conducting full stirring, standing, filtering and freeze-drying to obtain a dried carbon material; reacting the carbon material in an inert atmosphere to obtain a pre-product; and finally, soaking the pre-product with an inorganic strong acid, and conducting washing with water until the pre-product is neutral to obtain the chestnut shell-based biomass carbon material. The chestnut shell-based biomass carbon material has good pore structure and capacitive performance, is applied to an electrode material of a capacitive deionization technology to remove toxic heavy metals, and can effectively improve the removal rate.

The invention discloses a porous ionic polymer heterogeneous catalyst and a method for catalytically synthesizing N-formamide by using the porous ionic polymer heterogeneous catalyst, and provides a method for preparing an N-formamide compound by using the porous ionic polymer catalyst as a heterogeneous catalyst to catalyze carbon dioxide, organic amine and hydrogen-containing silane epoxide to carry out N-formylation reaction. The preparation method is green, environment-friendly, simple, efficient and low in raw material cost; the catalyst has an excellent pore channel structure, good physical and chemical stability, strong carbon dioxide enrichment capability and highly dispersed ionic liquid active centers; the catalyst is simple and efficient in technological process, very mild in condition and safe to operate; no organic solvent or additive is added in the catalytic reaction process so that the catalyst is environment-friendly; low-concentration carbon dioxide can be directly used as a raw material so that the cost and the energy consumption for obtaining high-purity carbon dioxide are reduced; the product separation and purification process is simple, the catalyst is easy to recover and has good stability, and repeated recycling can be achieved.

The invention discloses a cellular Mn-Ti-based catalyst for low-temperature selective catalytic reduction (SCR) denitration reaction, and a preparation method and a using method. The catalyst comprises the following components in molar percent: 40 to 60 percent of TiO2, 5 to 16 percent of MnO2, 3 to 7 percent of Mn2O3, 2 to 4 percent of Mn3O4, 2 to 8 percent of CeO2, 1 to 3 percent of V2O5, 0.5 to 1 percent of Se, 0.5 to 1 percent of Sb, and 0.15 to 1.5 percent of Bi. The preparation method comprises the following steps of: first preparing Mn-Ti catalyst powder by a hydrothermal method, and then preparing modified cellular Mn-Ti-based catalyst by processes such as extrusion forming, soaking and the like so as to improve the low temperature SCR activity and the sulfur poisoning resisting capability of the catalyst. Furthermore, the catalyst prepared by the method has the advantages of high mechanical strength, high dispersibility of active substances and difficult sintering, can be applied to the low temperature SCR denitration reaction of flue gas, is directly arranged behind a dust removing device even a desulfurizing device, can greatly reduce the operational temperature and operation cost of the traditional SCR process, and has high nitrogen oxide removing rate at the temperature of about 100 DEG C.