132results about How to "Catalytic" patented technology

An amorphous semiconductor film and a semiconductor film including an element selected from Group 15 of the periodic table are formed over a substrate. An island-shaped region including an island-shaped amorphous semiconductor film and an island-shaped semiconductor film is formed. A source electrode and a drain electrode are formed over the island-shaped region. The island-shaped semiconductor film that is not covered by the source electrode and the drain electrode is removed using the source electrode and the drain electrode as a mask. At this time, the thickness of the island-shaped amorphous semiconductor film is reduced, and a portion of the island-shaped amorphous semiconductor film is exposed. A catalytic element promoting crystallization is added into a region in which the island-shaped amorphous semiconductor film is exposed. By a heat treatment, the island-shaped amorphous semiconductor film is crystallized and the catalytic element is gettered.

An amorphous semiconductor film and a semiconductor film including an element selected from Group 15 of the periodic table are formed over a substrate. An island-shaped region including an island-shaped amorphous semiconductor film and an island-shaped semiconductor film is formed. A source electrode and a drain electrode are formed over the island-shaped region. The island-shaped semiconductor film that is not covered by the source electrode and the drain electrode is removed using the source electrode and the drain electrode as a mask. At this time, the thickness of the island-shaped amorphous semiconductor film is reduced, and a portion of the island-shaped amorphous semiconductor film is exposed. A catalytic element promoting crystallization is added into a region in which the island-shaped amorphous semiconductor film is exposed. By a heat treatment, the island-shaped amorphous semiconductor film is crystallized and the catalytic element is gettered.

The invention relates to a formula for preparing fracturing liquid by utilizing a biological enzyme preparation, and the biological enzyme is prepared by 0.2-0.5 percent of biological enzyme de-plugging agent by weight, a thickening agent, i.e. hydroxypropyl guar, a cross linking agent, i.e. borax, or an organic boron cross linking agent and a biological gel breaker, wherein the cross linking ratio of the cross linking agent is 100:5 or 100:0.25. The preparation has the advantages of good environment protection property, super activity and catalytic force, small usage amount, convenient use, enhanced efficiency, no residue after gel breaking, long action time under a stratum, good recovery and stability function on stratum rock cores, water-solubility, good wetting effect, simple and convenient operation, simple field construction equipment, and the like, is suitable for an oil well with a pH value from 4 to 10, and is favorable to accelerating the movement of water molecules.

The invention relates to an anticorrosive, wearproof flexible ceramic coating having A , B two components. It is characterized by: A component comprising epoxy resin, ceramic powder, pigment, solvent and additive. Its specific content is: using threeepoxy resins as film forming substance to improve anti-heat modification of coating layer, using silicon micropowder, titanium dioxide, lamprophyllite, titanium carbide, superfine zinc oxide as functional filler to increase wearproof and anticorrosion of coating layer, utilizing fibrous wollastonite to reinforce impact resistance of coating layer. B component is curing agent, phenol-amine compounds with long chain structure. It has outstanding properties of anticorrosion. wearproof, impact resiatance and sterilzing.

A ZIF-9-based porou carbon / carbon fiber composite material and preparation method thereof belongs to the technical field of a preparation method of a metal nanoparticle doped porous carbon / carbon fiber conductive composite material, can solve the problems of poor conductivity and poor stability of the existing composite carbon material, wherein the carbon fiber of a carbon fiber fabric is taken asa growth substrate, and high-density arranged ZIF is grown on the growth substrate; 9, carbonize at high temperature in an inert gas atmosphere to generate porous carbon / carbon fib composite material, and that invention realizes a ZIF-9-based porous carbon and conductive substrate integrated conductive network structure, lithium sulfide batteries, sodium sulfide batteries, lithium-air batteries and fuel cells, electrocatalysis and other fields have a wide range of applications.

The invention belongs to chemical materials and mainly relates to clay-based xanthogenate, and a preparation method and application thereof. The invention provides a clay-based xanthogenate compound. The other purpose of the invention is to provide the preparation method and the application of the clay-based xanthogenate. The clay-based xanthogenate compound and the preparation method thereof are characterized in that the compound is formed by alkalifying various mineral clays and then carrying out modifying or grafting reaction by adding carbon disulfide; and the method is simple, strong in operability, low in cost and easy for large-scale production, popularization and application. More particularly, the clay-based xanthogenate compound provided by the invention can be used as novel high-efficient heavy metal ion coagulant and can be applied in the fields, such as waste water treatment, soil remediation, wet-process metallurgy, environmental protection, ecological construction and the like, thus, the clay-based xanthogenate compound has the characteristics of simple and easy operation, rapidness, convenience, high metallic ion removing rate, easy solid-liquid separation and the like. The clay-based xanthogenate compound is an environment-friendly functional material and also has a wide application prospect in other fields.

The invention provides a method for preparing an oxidation catalyst from gold ore tailing slag, and a prepared oxidation catalyst and application thereof. The method comprises the following steps of: crushing the slag into particles of 50-200 meshes, and performing acid washing treatment; mixing the treated slag with a ferrous slat solution in an inert gas protection atmosphere, performing ion exchange adsorption, and then filtering and washing a filter cake; impregnating the obtained filter cake in water, and adding an alkali liquor to adjust the pH to alkalinity so that iron ions react in situ on the surface of the filter cake to obtain the filter cake loaded with hydroxyl iron; activating the filter cake loaded with the hydroxyl iron to obtain the oxidation catalyst loaded with nano-ferric oxide. The method provided by the invention is simple and convenient, moderate in reaction conditions, low in cost and friendly to the environment; the catalyst prepared by the method disclosed by the invention contains components which are not easy to loss and is high in oxidation; and therefore, the catalyst is suitable for treating various kinds of industrial waste water, especially dye waste water mother liquor which is high in COD (Chemical Oxygen Demand), low in pH value, high in salinity, and difficult to degrade and oxidize.

The invention discloses a method for preparing chromium salt. The method is characterized by comprising the following steps: sufficiently and uniformly mixing a raw material containing chromium oxide (chrome ore or chromium slag) with sodium carbonate, carrying out oxidizing roasting at the roasting temperature of 900-1100 DEG C for 0.5-2.5 hours in an atmosphere with the oxygen content of higher than 20% by using microwaves as a heat source, leaching the roasted product with water, and preparing chromium salt from the leach solution. The chemical analysis on the clinker and leaching slag indicates that the insoluble waste slag contains less than 5% of chromium (on the basis of chromic oxide). The method reduces the chromium content in the discharged chromium slag, enhances the chromium utilization ratio in the chromium salt production process, effectively saves the chrome ore resources, and has obvious advantages of resource saving and environmental protection by using the microwaves as the heat source instead of the traditional coal and natural gas heating.

The invention discloses a lithium-sulfur battery positive electrode, which comprises: a porous metal material adopted as the skeleton and the main electric conduction network; a positive electrode material filled in the skeleton, wherein the positive electrode material comprises sulfur, nitrogen-doped graphene, and a carbon material; and a secondary electric conduction network mainly formed by an electric conduction agent doped inside the positive electrode material. The invention further discloses a preparation method and applications of the lithium-sulfur battery positive electrode. According to the present invention, the foamed nickel is adopted as the positive electrode skeleton of the lithium-sulfur battery positive electrode, and the nitrogen-doped graphene is introduced, such that the electric conductivity and the sulfur loading amount of the positive electrode can be effectively improved so as to effectively optimize the battery performance. In addition, the lithium-sulfur battery positive electrode process is simple and controllable, and the large-scale production is easily achieved.

The invention discloses a method for preparing biodiesel by a zirconia solid base catalyst. The biodiesel is obtained by taking vegetable oil as a raw material to react with methanol or ethanol, adding the catalyst into the obtained product, and performing the transesterification. The solid base catalyst is rare earth metal oxide which takes zirconia as a carrier to support rare earth oxide, or takes zirconia supported rare earth metal oxide as the carrier and supports potassium fluoride. The preparation of the biodiesel by adopting the zirconia solid base catalyst as a catalyst for alcohol-grease exchange has high catalytic activity, has the conversion rate which is more than 94 percent, and has convenient post-treatment; the catalyst can be repeatedly used for multiple times after the recovery; and a product, namely the biodiesel and a byproduct glycerol are neutral, do not need to wash, and cannot produce industrial wastewater.

The invention provides a multifunctional opening foaming polymer particle and a preparation method thereof. The method includes the steps that nano-titanium dioxide or nano-zinc oxide or nano silver powder or nano zinc sulfide is used as a multifunctional auxiliary, an appropriate coupling agent, polymeric dispersant, antioxygen and polymer resin are further adopted, a twin-screw extruder is used for achieving melt blending to conduct extrusion and particle cutting, functional nano powder is wrapped in matrix resin so that polymer particles can be formed, then the polymer particles are foamed by supercritical carbon dioxide gas, the multifunctional opening foaming polymer particle with excellent performance can be prepared, the particle has a surface opening through hole structure and an inner continuous large hole structure, the particle size is 0.5-5 mm, and the opening hole diameter and the inner through hole diameter of the surface of a particle spherical shell both can reach 50 nm-10 microns. The preparation method is simple in technology, convenient and easy to implement. The prepared opening foaming polymer particle has the functions of absorption, filtering, antibacteria and mold prevention, catalysis, odor removal, formaldehyde removal, anti-ultraviolet ageing and the like.

The invention provides a bladeless fan with an air purification function. The bladeless fan comprises a flow guide body. A main engine is connected to the lower portion of the flow guide body. A drainage air flue is formed in the portion, connected with the main engine, of the flow guide body. The main engine comprises a heat pump device, a water collecting device, a controller and a shell. The heat pump device comprises a compressor, an evaporator, a heat dissipater, an expansion valve and a draught fan. The surface of the evaporator and the surface of the heat dissipater are coated with nanometer titanium dioxide coatings. The water collecting device comprises water collecting tanks which are provided with grooves and bosses. Each boss is hollow and provided with an ultraviolet lamp tube and an air hole. The shell is provided with exhaust ports and air inlets. The controller is connected with the compressor and the draught fan. In the working process, the ultraviolet lamp tubes are turned on, and nanometer titanium dioxide coating the surface of the heat dissipater, the surface of the evaporator and the surfaces of the water collecting tanks has a catalytic action to remove hazardous substances like formaldehyde in air and kill a variety of harmful bacteria; meanwhile, the heat dissipater and the evaporator are utilized for dehumidifying the air, and therefore the purposes of purifying and dehumidifying the air in the using process are achieved.

The invention discloses a synergetic purification method and a synergetic purification device for SO2 and heavy metals in smelting flue gas and belongs to the technical field of atmospheric pollution. The synergetic purification method comprises the steps of absorbing and purifying the SO2 and the heavy metals (such as Hg, As, Pb, Cd and Zn) through (NH4)2S solution serving as an absorbent; feeding the smelting flue gas subjected to dust removal into a second-level ammonium sulfide solution absorption tower so as to enable the absorbent to absorb and purify the SO2 and the heavy metals in the gas, wherein the heavy metals are settled down in the form of solid sulfide and are recycled after being filtered, and the SO2 is converted into NH4HSO3 and (NH4)2S2O3 which are retained in absorption liquid; after the absorption reaction is terminated, neutralizing, oxidizing and evaporatively crystallizing the absorption liquid to obtain (NH4)2SO4 and (NH4)2S2O3 solid mixtures which can be directly sold as fertilizers. The technology is simple and is easy to operate; the desulfuration efficiency is high, the cost is low, and the synergetic purification method is suitable for industrial application.

The invention discloses a preparation method for 3-methyl-3-butene-1-ol. The preparation method comprises the following steps of causing water, transition metal salt, isobutylene and formaldehyde to enter a condensation reactor, and performing condensation reaction under the conditions of 300 to 360 DEG C and 5 to 25MPa, wherein the transition metal salt is one or two or more of vanadium, chromium, iridium, iron, rhenium, ruthenium, cadmium, platinum, cerium, praseodymium, neodymium, samarium, europium, terbium, dysprosium, thulium and the like, the condensation reaction can be completely implemented within 1 to 100s under the synergistic catalysis of transition metal ions and [H3O<+>], and only a small amount of isobutylene is required; performing light component removal, dehydration and heavy component removal on condensation reaction liquid to obtain high-purity 3-methyl-3-butene-1-ol.

The invention discloses a preparation method of a CeO2-ZrO2-Al2O3 oxygen-storage material, and relates to a microwave calcination and coprecipitation preparation method for an oxygen-storage material for automobile exhaust catalytic purification. The preparation method is characterized in that the CeO2-ZrO2-Al2O3 oxygen-storage material is prepared from Ce(NO3)3.6H2O, ZrOCl2.8H2O and Al(NO3)3.6H2O after preparing a CeO2-ZrO2-Al2O3 precursor through coprecipitation and implementing microwave calcination. The preparation method has the effects and advantages that the CeO2-ZrO2-A12O3 solid solution oxygen-storage material, which is prepared at relatively low temperature through a microwave calcination technology, is simple in preparation process, low in cost, and remarkable in oxygen-storage capacity and thermal stability effect.

An improved soot catalyst is comprised of an alkali compound at least partially coated by a ceramic coating comprised of C bonded to a metal, semimetallic element or combination thereof. The improved soot catalyst may be employed in catalyzed Diesel particulate filters. In one method to make a catalyzed Diesel particulate filter, the improved filter is made by contacting a porous ceramic body having an alkali catalyst thereon, coating the alkali catalyst with an organic ceramic precursor, heating the ceramic body to a temperature in an atmosphere sufficient to decompose the organic ceramic precursor to form the soot catalyst on the porous ceramic body without volatilizing substantial amount of the alkali catalyst away.

The invention discloses a mononuclear fluorine-substituted bimetal phthalocyanine complex / activated carbon lithium thionyl chloride battery catalytic material and a preparation method thereof. 4-fluorophthalic anhydride, cobalt chloride hexahydrate, copper chloride dehydrate, pitch coke activated carbon and urea which are as raw materials and ammonium molybdate which is used as a catalyst are uniformly ground in a glass mortar and then are placed in a muffle furnace for solid phase sintering to obtain a target product. The method has a simple preparation process, low cost, easily controlled preparation conditions, a short synthesis cycle and uniform compositions. The composite material prepared by the method can increase the ion activation surface area and accelerate electron transport. The high specific surface area of the pitch coke activated carbon, the certain catalytic properties of a pore structure and a microcrystalline structure and the mutual competition and synergistic effects of the bimetal affect the catalytic performance of the composite material together, improve the electrochemical performance of the lithium thionyl chloride electrode material, and reduce contact resistance between interfaces.

The invention relates to a method for synthesizing La-Mg hydrogen storage alloy by microwave aid heating, which belongs to the technical field of metal functional material hydrogen storage alloy preparation processes. The method mainly comprises the following steps of: weighing lanthanum powder and magnesium powder in a certain stoichiometric ratio of 1: 8.5-1: 12, and mixing the raw materials uniformly by adopting a pre-ball-milling process; pressing the mixed raw materials into circular cakes of phi15mm*(2-3)mm on a powder tablet press under the pressure of 300 to 900MPa; then placing the pressed sample into a microwave tube type furnace, pumping vacuum and then introducing high-purity argon into the furnace to protect the sample, turning on a microwave power supply, heating the sample to between 680 and 700 DEG C, preserving the heat for 10 to 60 minutes, and then cooling the sample to room temperature; and activating the synthesized La-Mg alloy, absorbing hydrogen at the temperature of 350 DEG C under the hydrogen pressure of 5MPa, and finally obtaining the hydrogen storage alloy. The La-Mg hydrogen storage alloy prepared by the method has high hydrogen absorption and release performance.

The invention belongs to the technical field of soil remediation, and provides a contaminated soil-based soil conditioner which comprises the following components in parts by weight: 50-100 parts of plant ash, 50-100 parts of quick lime, 30-80 parts of an organic fertilizer, 40-70 parts of a calcium magnesium phosphate fertilizer, 20-60 parts of zeolite, 5-10 parts of a compound microbial agent, 0.5-1 part of biomass charcoal and 1-2 parts of urea. The contaminated soil-based soil conditioner integrates plant ash, quick lime, organic fertilizer, calcium magnesium phosphate, zeolite fertilizer,composite microbial agent, biomass charcoal and urea, not only is simple in material obtaining and low in cost, but also is good in remediation effect on heavy metal contaminated soil and quick in effect taking, and meanwhile, the soil fertility is improved.

The invention relates to a method and a device for simultaneous desulphurization and denitration by a flue gas-seawater method. The method comprises the following steps: A) catalyzing and washing the flue gas containing SO2 and NOx by seawater to remove the SO2 and the NOx in the flue gas, and then discharging the purified flue gas subjected to the desulphurization and the denitration and discharging acid seawater formed during washing; and B) recovering the quality of the seawater, namely adding the seawater into the acid seawater and blowing the air into the acid seawater, and discharging the seawater when the quality of the acid seawater is recovered to accord with the environment-friendly requirement. The method and the device for simultaneous desulphurization and denitration have the advantages that chemical raw materials are not needed, the emission reduction efficiency and reliability are high, the occupied area is small, the construction and running costs are low, and the method and the device are particularly suitable for simultaneous desulphurization and denitration for boiler flue gases of large and medium-sized heat power plants.

The invention discloses a regular catalyst packing for a reactive distillation column. The regular catalyst packing is composed of a component (A) and a component (B), wherein the component (A) and the component (B) are arrayed alternatively and then banded by a banding piece; the component (A) is composed of a plurality of corrugated packing pieces with meshed structure or pore canal structure; the component (B) is a cloth bag evenly sewed and filled with particle solid catalysts; in each regular catalyst packing, the component (A) and the component (B) are arranged alternatively; the corrugated inclination direction of each two adjacent corrugated packing pieces are reverse. By utilizing the corrugated packing pieces, the whole catalyst packing layer can have enough passage, the gas and liquid can be distributed better in the column, and the dead area and uneven flow of liquid are avoided; by utilizing the catalyst cloth bag, the use amount of catalyst can be reduced; with the combination of the corrugated packing pieces and the catalyst cloth bag, the contact time of the reactant and catalyst is longer, so the reactive distillation process is performed efficiently. Meanwhile, the regular catalyst packing is easy to manufacture and convenient to assemble and disassemble, and the requirements of industrial production can be met.

The invention discloses a poly-generation utilization method based on collaborative microwave pyrolysis of seaweeds and aquatic invasive plants. The method comprises the following steps: (1) collecting seaweeds and aquatic invasive plants, drying, cutting or crushing and then sieving; feeding to a microwave pyrolysis device, mixing, stirring and adjusting micro-wave power to evaporate moisture; (2) after the moisture is evaporated, stopping a mixing and stirring device, carrying out microwave high-temperature pyrolysis treatment for 10-20 minutes at 450-600DEG C under the conditions that the microwave irradiation frequency is 2450MHz and the power is 0-750W and continuously adjustable; and (3) cooling mixed oil and gas generated by microwave pyrolysis and then feeding to a separating device, wherein the separating device separates the mixed oil and gas into bio-oil, combustible gas and fly ash, the yield of the bio-oil is 30%-60%; the recovery rate of combustible gas is 10%-20%; the coke yield is 30%-50%, and three-phase poly-generation of the bio-oil, the combustible gas and the fly ash is achieved.

The invention relates to uniform ultra-microporous activated carbon for gas separation and a preparation method of the uniform ultra-microporous activated carbon. According to the technical scheme of the preparation method, mixing semi-coke with KOH in a mass ratio being 1: (0.01-0.2), adding water and an activating aid to impregnate the mixture for 1-36 h; increasing the temperature to 800-950 DEG C in a programmed manner under N2 protection, controlling thermal decomposition, and introducing water for activation of part of steam for 0.5h-1.5h; finally, washing the mixture with acid and water until the mixture is neutral to obtain the uniform ultra-microporous activated carbon. The pore size is distributed centrally between 0.45 and 0.55 nm, the pores belong to ultra-micropores and have microporosity of 70% or more, and the adsorption capacity of hydrogen is 77cm<3> / g or higher. The semi-coke is taken as a raw material, low in price and low in energy consumption and needs not to be carbonized; an activation method integrates KOH impregnation pretreatment and activation of part of steam, little KOH is consumed, and the activation method has the characteristics of being low in cost and pollution, helpful for reducing corrosion of equipment and the like. The activated carbon prepared with the method has the characteristics of uniform pore size distribution, extremely rich ultra-microporous structure and the like, and can be used in gas separation fields such as pressure swing adsorption hydrogen making or hydrogen storage and the like.

The invention relates to a preparation method and an application for bionic laccase based on dipeptide. The bionic laccase based on the dipeptide takes metal ions as a catalytic active center and dipeptide as an organic framework, and has laccase-like activity; and the bionic laccase based on the dipeptide is a dipeptide-crosslinking agent-metal compound. The bionic laccase prepared by using the method provided by the invention has the following advantages: the preparation process is simple, and the preparation conditions are mild; the prepared bionic laccase has the catalytic activity of simulating natural laccase; the catalytic efficiency of the bionic laccase is far higher than the catalytic efficiency of natural laccase; and the bionic laccase has high stability and good biocompatibility. The preparation method for the series of bionic laccase based on the dipeptide has potential application in development of industrial applications of wastewater treatment, textile bleaching, foodsafety and the like.

The invention discloses an efficient slow release composite fertilizer for wheat. The fertilizer comprises the following raw materials in parts by weight: 20-30 parts of ammonium chloride, 15-20 parts of potassium sulphate, 20-30 parts of mono-ammonium phosphate, 15-20 parts of a calcium-magnesium-phosphorus fertilizer, 5-19 parts of a white phosphorus fertilizer, 4-10 parts of pregelatinized starch, 2-4 parts of a full gemma microbial preparation, 20-30 parts of feather meal, 10-20 parts of gourmet powder residues, 20-40 parts of starch residues, 20-30 parts of sugar residues, 2-5 parts of tung oil, 5-10 parts of disproportionated rosin, 5-8 parts of lignosulfonate, 2-5 parts of polyvinyl alcohol, 4-8 parts of carboxymethyl cellulose, 20-30 parts of activated carbon, 30-40 parts of organic carbon, 5-8 parts of kaolin, 15-20 parts of attapulgite clay powder, 10-14 parts of weathered coal, 20-25 parts of zeolite powder, and 5-10 parts of calcium silicate. According to the invention, the efficient slow release composite fertilizer can improve soil, and is comprehensive in nutrition, and high in slow release effect.

The invention discloses an ecological sinking bed for deep polluted river treatment and in-situ remediation and a method thereof, and belongs to the field of environmental protection devices. The ecological sinking bed comprises a frame body, and the frame body is divided into plant planting areas located on the two sides and a filling area located in the middle. The plant planting area is used for planting aquatic plants, and the filling area is sequentially filled with zeolite, a solidified microorganism filler and a three-dimensional elastic filler from bottom to top in a layered mode. Theecological sinking bed is characterized in that the water body is purified in multiple modes by combining the physical adsorption and microbial degradation effects of the filler and the zeolite surface and the purification function of plants such as reeds, and a knife edge is designed for cutting the reeds, so that the problems of unfavorable conditions of easy damage, short tolerance time and thelike of floating beds due to large rain water flow speed and sun exposure and difficult recovery caused by rooting of the reeds are solved. The ecological settling bed is nontoxic and harmless in material, is not easy to damage, is durable, is convenient to recycle and reuse after finishing, and does not generate secondary pollution.

The invention discloses an all-water-blown high-dispersion silicon dioxide in-situ reinforced polyurethane grouting lifting material and a preparation method thereof. The all-water-blown high-dispersion silicon dioxide in-situ reinforced polyurethane grouting lifting material comprises a component A and a component B, wherein the component A is prepared from hydrophilic polyether polyol, dispersants, silica sol, composite catalysts, foam stabilizers and water; the component B is polyisocyanate. The polyurethane grouting lifting material is higher in storage stability, is used as a a grouting lifting repairing material with higher compression strength, and is applicable to lifting repairing under different geological conditions; when the polyurethane grouting lifting material is applied to lifting repairing of buildings or road foundation collapse, the requirements of construction operation can be met; the rapid lifting repairing effect can be achieved.

The invention discloses a processing method for improving the nutritional ingredient content of mulberry leaf tea, wherein the processing method includes the following aspects: (1) mulberry leaf picking: picking 2-3 bud leaves at the top of mulberry, and cleaning with clean water; (2) dipping: respectively carrying out soaking treatment on the mulberry leaves with calcium lactate and iron sulfate in water bath conditions, and preserving the dipped mulberry leaves at a low temperature; (3) electromagnetic treatment: carrying out electromagnetic treatment on the mulberry leaves in a drum type electromagnetic device respectively with 200-240 V and 320-360 V; (4) enzyme deactivation: carrying out enzyme deactivation treatment on the magnetized mulberry leaves in a high pressure steamer; (5) vacuum fermentation: carrying out aerobic fermentation and anaerobic fermentation on the mulberry leaves; and (6) tea preparation: rolling the fermented mulberry leaves and drying at low temperature to prepare the mulberry leaf tea. According to the mulberry leaf tea prepared by the method, the content of gamma-aminobutyric acid in the mulberry leaf tea is increased by 2.75 mg / g; after soaking, the content of flavonoids in a mulberry leaf tea soup is increased by 8.83 mg / g, and the amino acid content is increased by 1.13%.

The invention relates to a zeolite diatom ooze coating. According to the technical scheme, the zeolite diatom ooze coating mainly comprises the following components in percentage by mass: 15-35% of zeolite powder, 10-30% of diatomite, 10-20% of sea-foam stone powder, 10-25% of titanium dioxide, 5-20% of dolomite dust, 3-10% of white carbon black, 3-10% of kaolin, 3-8% of ash calcium powder, 0.3-1% of cellulose ether, and 0-10% of dispersible latex powder. The zeolite diatom ooze coating is prepared by combining zeolite and sepiolite with diatomite and adding a plurality of auxiliaries through a scientific formula, wherein zeolite with most molecular sieve representativeness and ion exchange, adsorption and dispersion, catalysis, chemical reaction and reversible dehydration properties is used as a main raw material, sepiolite with maximum specific surface area as a non-metallic mineral, unique content porous structure and the known strongest adsorption capability is used as an auxiliary raw material, and the technical effects of greatly improving the adsorption performance and ion exchange performance, increasing the removal of harmful substances such as formaldehyde, benzene, ammonia and the like, purifying air and eliminating peculiar smell are achieved.