89results about How to "The preparation process route is simple" patented technology

The invention provides a method for preparing activated carbon by utilizing direct coal liquefaction residue as a raw material. The method includes the steps as follows: (1) adding smashed direct coal liquefaction residue together with KNO3, KOH and absolute alcohol into water, stirring to be uniform under room temperature, and later drying the obtained mixture to obtain a dry material; (2) placing the prepared dry material in a carbonization furnace, conducting preoxidation in the atmosphere of air, conducting carbonization-activation in the atmosphere of inertia gas, and then obtaining coarse activated carbon; and (3) acid-washing and deashing the prepared coarse activated carbon to obtain finished activated carbon. The method is simple in preparation process route, uses conventional equipment and has universality to the raw material. The obtained activated carbon has not only characteristics of high specific surface area, developed micropores and low ash content, but also controllable output, higher productivity, suitability for production in batches, and better technological and economic benefits.

The invention discloses a fuel battery used oxygen reduction catalyst and the preparation method thereof, and relates to a loaded catalyst which is composed of a transition metal chelate and a carbon black carrier, wherein, the transition metal chelate is prepared through the reaction of transition metal salt and diethylene triamine. MN3 structure is included in the molecule of the transition metal chelate (M is transition metal and N is nitrogen atom), and an active site is provided for catalyzing the oxygen reduction reaction. The catalyst takes the diethylene triamine with low cost as the raw material; overcomes the problems of the traditional oxygen reduction catalyst of the macrocyclic compound, such as metalloporphyrin and metal phthalocyanine, that the cost of the raw materials is high, and the traditional oxygen reduction catalyst is not suitable for the large scale production industrial production; and has the advantages of simple preparation technology, mild condition, secure process, low cost, and so on. The catalytic performance of the catalyst is equivalent to the oxygen reduction of the metalloporphyrin, the catalytic has good anti carbinol oxygenic property, and can be applied to the oxygen reduction reaction of the cathode of the battery.

The invention relates to an alcohol-dissolving liver-protecting drink and preparation method, wherein the constituents include (by weight percent): Chitosan oligosaccharide 0.1-2%, glycyrrhizin 0.1-0.5%, water raffinate of kudzuvine flower 2-10%, water extract of hovenine 1-5% and balancing water.

The invention relates to a plastic forming technique and a powder metallurgy technique and provides a tungsten carbide material which adopts Ni3Al as binder phase and a preparation method thereof. The tungsten carbide material adopts toughening intermetallic compound Ni3Al to substitute cobalt with traditional binder phase and contains the following components according to mass percentage: 86 to 95 percent of WC, 5 to 14 percent of toughening Ni3Al. The preparation method comprises the steps: ball grinding is carried out to the raw materials according to the percentages until the size of WC powder crystal grain is thinned to be less than 100nm; current rapid sintering method is adopted to form solidified ball grinding powder, and the conditions of current rapid sintering process are as follows: types of sintering current: square wave pulsed current or constant current; sintering pressure: 10MPa to 50MPa; sintering time: 2 to 8 minutes. The plastic forming technique, the powder metallurgy technique and the tungsten carbide material of the invention can not only save strategic material cobalt, reduce material cost, but also effectively improve the performance of high temperature resistant and corrosion resistant performance of the material and have good promotion and application prospect.

The invention provides a tungsten carbide based cemented carbide powder metallurgical material and method for preparation, wherein the the constituents (by weight percentage) include WC 86-95%, Co 4-8%, Al 1-3%, TiC 0-2%, and VC 0-2%. The preparing process consists of pre-grinding, mixing, ball-grinding, and finally consolidating through electric current flash sintering method.

The invention discloses a preparation method of a monolayer SiO2 antireflection film. The preparation method comprises steps as follows: (1) pretreatment of a glass substrate; (2) preparation of SiO2 sol; (3) sol coating and molding; (4) film curing; and (5) cooling, checking and packaging. The monolayer SiO2 antireflection film has excellent anti-reflection performance, very excellent thixotropy, good self-cleaning performance and excellent chemical stability, and the preparation method is simple.

A preparation method of a three-dimensional metal mesh with preferential adsorption / separation performance comprises the following steps: (1) graphene with the nanosheet thickness is coated on a metal mesh by an immersion method so as to construct nanoscale surface roughness, and then a matter with low surface energy is coated on the graphene surface layer by an immersion method so as to change chemical energy of the surface and construct a super-hydrophobic super-lipophilic two-dimension metal mesh with surface water contact angle being 150-155 degrees and oil contact angle being zero degree; and (2) the at least two two-dimension metal meshes are angled and overlapped to form a stereo three-dimensional metal mesh.

The invention relates to a solvothermal preparation method of a 3D flower-shaped lithium iron phosphate positive electrode material assembled by two dimensional nanosheets, and belongs to the preparation method of the positive electrode material lithium iron phosphate for a power lithium ion battery. The method comprises the steps: firstly, adding an iron source and a phosphorus source to a reactor, carrying out magnetic heating and stirring to obtain a deep green suspension, then adding a lithium source and a complexing agent, continuously stirring for several hours, then transferring the reactant to a hydrothermal kettle, at the same time, adding a solvent having a certain volume proportion and having surfactant properties, carrying out a heat preservation reaction, after the reaction isfinished, cooling to room temperature, carrying out centrifugal washing, and carrying out vacuum drying. Two mixed solvents are adopted in the preparation, and one is the solvent having the surfactant properties; according to the 3D flower-shaped lithium iron phosphate assembled by the nanosheets and having a porous structure, on one hand, complete wetting of an electrolyte and a positive electrode material is facilitated, on the other hand, the lithium ion migration diffusion path is shortened, the ion migration rate under battery multiplying power discharge is improved, the experiment process is simple, and the positive electrode material LiFePO4 with good performance can be prepared.

The invention relates to a preparation technology of a telmisartan active pharmaceutical ingredient, which comprises the technological routes: taking 3-methyl-4-nitryl-benzoic acid as an initial raw material; preparing 4-amino-3-methyl benzoic acid methyl ester through esterification and reduction; preparing 4-methyl-2-propyl-benzimidazole-6-carboxylic acid through acylation, nitration of fuming nitric acid, reduction, cyclization and hydrolysis; producing 4-methyl-2-propyl-6-(1-benzimidazole-methylbenzimidazole-2-yl)-benzimidazo through the condensation with N-methy-o-phenylenediamine; and condensing with 4'-brooethyl biphenyl-2-carboxylic methyl ester in the presence of potassium tert-butoxide and preparing a telmisartan crude product through the hydrolysis of a sodium hydroxide solution-methanol system. The technological routes are simple and mature. The total molar yield can finally reach 23.2% through improving the traditional technological routes; and reaction operation is more easier, the process is simpler, serious three-waste pollution is not generated and the preparation technology is convenient for industrial production.

The invention discloses an elastic hydrophobic material, a preparation method thereof and application of the material to removal of organic compounds in water. In particular, acetylenyl benzene and benzene halide are polymerized in a sponge, a polymer forms a hydrophobic micro-nanostructure inside the sponge, and an elastic highly hydrophobic material is finally formed. The material can selectively adsorb / separate oil or non-polar organic solvents in a water body, simultaneously has better elasticity and can separate the organic compounds by way of extrusion after the adsorbed organic compounds are saturated. The synthetic process of the material is simple, has low requirements for equipment and can achieve industrial scale production. The material has high efficiency of removing organic matters in water, has a simple regeneration process, is low in cost and has extensive application prospects.

The invention discloses a high-luminance LED chip and a manufacturing method thereof. The high-luminance LED chip comprises an epitaxial wafer, a current barrier layer, a current expanding layer, reflecting layers, a P electrode, an N electrode and a transparent insulation layer, wherein the epitaxial wafer comprises a substrate material, a buffer layer, an N-type semiconductor layer, a luminancelayer and a P-type semiconductor layer, the N-type semiconductor layer, the luminance layer and the P-type semiconductor layer are formed on the substrate material in sequence, the current barrier layer is formed on the P-type semiconductor layer, the current expanding layer is formed on the P-type semiconductor layer, the reflecting layers are formed in the current barrier layer and a lower stepface and comprise multiple reflecting layer subsections which are arranged at equal intervals, the P electrode is formed on the reflecting layer on the current barrier layer, and the N electrode is formed on the reflecting layer on the lower step face. By means of the high-luminance LED chip and the manufacturing method thereof, the reflecting layers are arranged below the electrodes, the absorption of light by the electrodes can be further reduced, the reflecting efficiency to light by the electrodes is improved, and the luminance of the LED chip is further improved; meanwhile, the arrangement of the reflecting layers is beneficial to improving of the current distribution efficiency, and thus the luminous efficiency and reliability of the LED chip are improved.

The invention discloses a carbon fiber electromagnetic wave absorbing material. The material mainly comprises prismoids periodically distributed on a conductive substrate, wherein the prismoids are formed by alternately superposing a carbon fiber layer and a dielectric layer in the direction vertical to the plane of the conductive substrate. A preparation method for the material comprises the following steps of: selecting reinforcing materials for preparing the carbon fiber layer and the dielectric layer, then sequentially spreading the resin adhesive dipped reinforcing materials according to the sequence of alternately superposing the carbon fiber layer and the dielectric layer, and preparing a carbon fiber layer / dielectric layer superposed board by adopting a hot pressing process of resin adhesive standards; and processing the carbon fiber layer / dielectric layer superposed board according to the required shape and size by using a standard numerical control milling method, thereby obtaining the carbon fiber electromagnetic wave absorbing material. The material has the advantages of high applicability, low cost, wide working band, simple processing process and the like.

The invention discloses a preparation method of a multi-layer SiO2 inorganic anti-reflection film. The preparation method comprises steps as follows: (1) pretreatment of a glass substrate; (2) preparation of SiO2 sol; (3) sol coating and molding; (4) film solidification; (5) cooling, detection and packaging. The multi-layer SiO2 inorganic anti-reflection film has excellent anti-reflection performance, very excellent thixotropy and excellent chemical stability and is simple in preparation process.

The invention provides a microarray integrated LED chip comprising multiple GaN-based LED chips connected through an array structure. The adjacent GaN-based LED chips are connected through a transparent insulating layer and the substrate has an integrated structure. Each GaN-based LED chip structure comprises the substrate, a buffer layer, an N-type GaN layer, an MQW layer, a P-type GaN layer, anITO layer and the transparent insulating layer which are arranged from bottom to top in turn. Each GaN-based LED chip also comprises a first mesa penetrating to the N-type GaN layer from top to bottomand a second mesa penetrating from the N-type GaN layer to the substrate. An N electrode is arranged on the first mesa of the N-type GaN layer and the end part is exposed outside the transparent insulating layer. A P electrode penetrates through the transparent insulating layer and the ITO layer to be connected with the P-type GaN layer. The invention also provides a preparation method of the microarray integrated LED chip. The microarray integrated LED chip has the advantages of high density integrated packaging and high brightness and can also realize rapid overall transfer and packaging ofsmall-size chips.

The invention discloses a method for preparing impregnation pitch using direct coal liquefaction residue, impregnation pitch and application thereof. The method comprises the following steps: (S1) adding an extraction solvent into the direct coal liquefaction residue, and sequentially performing hot-melting extraction, solid-liquid separation, reduced-pressure distillation and solvent recycling treatment to obtain coal liquefaction pitch; and (S2) adding heavy oil into the coal liquefaction pitch, blowing air into a reaction kettle, heating and stirring under normal pressure, and performing a heat polymerization reaction to obtain the impregnation pitch and the recycled light oil byproduct, wherein the heavy oil is anthracene oil, vacuum residue and / or catalytic cracking slurry oil with initial boiling point over 260 DEG C; and the addition volume of the heavy oil is 20-50wt% of the coal liquefaction pitch. The method disclosed by the invention has the advantages of simple technology, mild conditions, conventional equipment and easiness in enlarged production.

The invention discloses a meal fiber solid beverage for night and a preparation method thereof. The meal fiber solid beverage for night comprises the following raw materials by components: resistance dextrin, L-arabinose, xylooligosaccharide, isomaltose hypgather, citrus peels pectin, bifidobacterium animalis, lactobacillus acidophilus and an auxiliary material. The preparation method comprises the following steps: stirring the resistance dextrin, L-arabinose, xylooligosaccharide, isomaltose hypgather and citrus peels pectin and mixing the above materials, then disinfecting a mixture, adding bifidobacterium animalis and lactobacillus acidophilus, and uniformly mixing the materials to obtain the product. The soluble meal fiber in the meal fiber solid beverage cooperates with probiotics and citrus peels pectin, the meal fiber solid beverage has the effects for cleaning intestine and relaxing bowel, controlling the blood sugar and cholesterol levels, adjusting intestinal flora, promoting intestinal tract movement, reducing fat and nourishing skin, and preventing colon cancer, and is an ideal meal fiber supplement for human body.

The invention belongs to the field of inorganic non-metal material preparation, and in particular relates to a method for preparing a yttrium oxide nano material. The method comprises the following steps: sufficiently dissolving yttrium acetylacetonate in a methanol solution, performing a solvothermal reaction, performing filtration and washing, and performing drying, calcining and cooling, thereby obtaining the yttrium oxide nano material. The method is simple and feasible in process, high in product purity and low in preparation cost; the size of a prepared product is 30-50nm, and the product is good in both uniformity and dispersibility, and moreover is simple in production process, low in sintering temperature and easy in application to practical large-scale production. The yttrium oxide nano material prepared by using the method has wide application prospects in fields such as fluorescence medium materials.

The invention discloses a noble metal catalyst for catalyzing wet oxidation industrial wastewater, and a preparation method and application thereof, and belongs to the technical fields of an environmental functional material and wastewater treatment. The catalyst is prepared by loading active components by a carrier, wherein the carrier is a mixture of CeO2 and TiO2; and the active components areselected from one of or a composition of two of noble metal Ru, Rh, Pt and Pd. The preparation method comprises the following steps: (1) preparing the carrier: mixing cerium dioxide powder, titanium dioxide powder and a pore-forming agent, ball-milling by a ball mill, adding adhesive and water, mixing and kneading, extruding into strips, drying and roasting; and (2) loading the active components:dipping the carrier into active component dipping liquid, drying, roasting and reducing to prepare the loaded noble metal catalyst. The preparation method of the catalyst is simple and cheap and can be industrialized; and the catalyst can be applied to catalyzing treatment on actual industrial wastewater by a wet oxidation technology.

The invention discloses a preparation method of L-carnitine nitrate, comprising the following steps of: dripping nitric acid into L-carnitine while stirring under the temperature of 10 to 25 DEG C, wherein the mol ratio of the L-carnitine to the nitric acid is 1: 1-1.1; gradually clarifying the solution at the reaction temperature of 40 to 70 DEG C; regulating the pH value of the solution to be 1to 2 by using the nitric acid; continuously stirring the clarified solution, preserving the temperature for 15 to 30min and then compressing and dehydrating, stirring and air-drying at 50 to 70 DEG C, and drying at 75 to 80 DEG C to obtain an L-carnitine nitrate finished product. In the invention, the L-carnitine and the nitric acid are reacted under the ordinary pressure, and therefore, the reaction conditions are mild. In the preparation method, the food-grade L-arginine and the high-purity nitric acid are adopted as raw materials, therefore, the produced L-carnitine nitrate has good quality and high purity up to more than 99 percent without crystallization; not only the quality is ensured, but also the working procedures are saved. The production efficiency is improved and the yield coefficient is high and is up to more than 98 percent. The preparation method has reasonable and simple process and can be suitable for industrial large production.

The invention discloses a method for preparing a copper-based catalyst for synthesizing an organosilicone monomer. The method comprises the following steps: firstly, dissolving a soluble copper salt into water so as to prepare a copper salt solution; secondly, dissolving an alkali compound into water so as to prepare an alkali solution; thirdly, adding the copper salt solution into the alkali solution under the stirring condition, reacting under the condition that the temperature is 50-100 DEG C so as to generate sediment, filtering and collecting the sediment, and drying; fourthly, putting the collected sediment into a fluidized bed reactor, using a mixture gas of hydrogen and nitrogen as a reduction medium for carrying out temperature programmed reduction treatment; fifthly, using a mixture gas of oxygen and nitrogen as an oxidation medium for carrying out temperature programmed oxidization treatment; sixthly, cooling to the room temperature in nitrogen atmosphere so as to obtain the copper-based catalyst. According to the method, the low-cost copper salt is used as a raw material, the preparation process is simple in produce, good in stability and tender in production condition, no complex production equipment is needed, the prepared catalyst is high in catalysis activity, the Si powder conversion rate reaches more than 34%, and the dimethyl selectivity reaches more than 81%.

The invention discloses a preparation method and intermediate of an isoquinoline compound. The isoquinoline compound is roxadustat, the intermediate of the roxadustat is a compound formula 2, and twonovel preparation methods of a roxadustat key intermediate 9 are developed by taking the compound formula 2 as a raw material. According to the first method, a compound 2 reacts with hydroxylamine hydrochloride to obtain an intermediate compound formula 3, and then the intermediate compound formula 3 reacts with a phosphine reagent compound formula 4 to obtain the roxadustat key intermediate compound formula 9. According to the second method, acyl chloride is prepared from the compound formula 2, then the acyl chloride and an aminomalonate ester derivative 7 are subjected to condensation and decarboxylation reaction, then a compound formula 8 is obtained, and finally, the key intermediate compound formula 9 is obtained. The two methods are high in yield, using of precious metal for catalysis is avoided, the route efficiency is greatly improved, the technological cost is lowered, generation of by products is reduced, and the purity of final finished products is improved advantageously;and a route is easy to operate, the total yield is high, the purity of obtained products is also high, the route is suitable for amplifying production, and the route is shows as the formula (please see the specifications for the formula).

The invention belongs to the field of preparation of inorganic nonmetallic materials and particularly relates to a spherical lanthanum zirconate nano material preparation method. The method includes: completely dissolving lanthanum acetylacetonate and zirconium acetylacetonate into methanol solution, performing solvothermal reaction, filtering, washing, drying, calcining and cooling to obtain a spherical lanthanum zirconate nano material. The spherical lanthanum zirconate nano material preparation method is simple, convenient and feasible in process, high product purity and low preparation cost are realized, product size is 150-200nm, high uniformity and dispersity of products are achieved, and technical simplicity in production, low sintering temperature and easiness in application to practical large-scale production are realized. The spherical lanthanum zirconate nano material prepared according to the method has a promising application prospect in the field of high-temperature thermal insulation.

The invention belongs to the field of preparation of inorganic non-metallic materials and particularly relates to a preparation method of a tin dioxide / copper oxide composite nano material with a spherical hierarchical structure. The preparation method comprises the following steps: fully dissolving copper acetylacetonate and tin tetrachloride in a methanol solution, performing solvothermal reaction, filtering, washing, drying, calcining and cooling to obtain the tin dioxide / copper oxide composite nano material with the spherical hierarchical structure. The tin dioxide / copper oxide composite nano material prepared by the preparation method provided by the invention is high in purity and low in preparation cost, the size of a whole big ball is 3-6 mm, the size of a nano particle is 20-30 nm, the product uniformity and the dispersibility are good, and the large-scale production is easy. The tin dioxide / copper oxide composite nano material with the spherical hierarchical structure, prepared by the preparation method provided by the invention, has higher visible light photocatalytic activity and wide application prospect in the fields of dye wastewater and indoor harmful gas degradation, photocatalytic disinfection and the like.

The invention relates to a preparation method of a high specific gravity tungsten alloy material and a nano crystal block. In the present invention, firstly, the tungsten, nickel, iron and cobalt powders are proportioned according to the following mass percentages: W93.0%, Ni3.5-4.5%, Fe1.5-2.0%, Co1.0-1.5%, and the rest are Trace impurities; after powder mixing, high-energy ball milling is carried out until the tungsten phase grains in the ball-milled powder are refined to the nanometer level, and then square wave DC pulse-constant current is used for rapid sintering, sintering pressure: 40MPa~50MPa, sintering time: 3 ~8 minutes, the nanocrystalline block high specific gravity tungsten alloy material can be obtained after sintering. The high-specific-gravity tungsten alloy of the invention has a reasonable formula, can help to obtain nanocrystalline sintered materials, and can improve the comprehensive mechanical properties of sintered materials. The invention obviously lowers the requirements for equipment, thereby reducing the cost, and is particularly beneficial to the localization of the production of bulk nanocrystalline high-density tungsten alloy materials.

The invention provides a lithium ion battery anode material. The lithium ion battery anode material comprises the compound with the atomic ratio shown as the general formula (I), and carbon, LiMn(1-x)MxPO4.yLiTi2(PO4)3 (I), wherein M is one or more of titanium, cobalt, ferrum, magnesium, aluminium, chromium and niobium, x is not less than 0 and not more than 0.2, and y is more than 0 and not more than 0.2. The invention provides a preparation method of lithium ion battery anode material, comprising the following steps of: mixing the lithium-containing compound, the manganese-containing compound, the M-containing compound, the titanium-containing compound, the phosphorus-containing compound and the carbon-containing compound, and executing ball milling on the mixture to obtain the slurry, wherein M is one or more of titanium, cobalt, ferrum, magnesium, aluminium, chromium and niobium; and burning the slurry to obtain the lithium ion battery anode material. The invention further provides a lithium ion battery, wherein the anode of the lithium ion battery is prepared from the anode material in the above technical scheme or the anode material prepared by the preparation method in the above technical scheme.

The present invention discloses a daily-use dietary fiber solid beverage and a preparation method thereof, wherein the raw materials of the daily-use dietary fiber solid beverage comprise insoluble fiber powder, orange peel pectin, konjac powder, resistant dextrin, and an auxiliary material. The preparation method comprises: stirring and mixing insoluble fiber powder, orange peel pectin, konjac powder, resistant dextrin, and an auxiliary material, and sterilizing to obtain the product. According to the present invention, the daily-use dietary fiber solid beverage has beneficial effects of enterokinesia promoting, easy digestive tract harmful substance discharging, constipation prevention, and colon cancer prevention.

The invention discloses a preparation method of feed tannalbin and tannalbin prepared by the method. The preparation method comprises the following steps: adding water into Chinese gallnut processing screen underflow, performing mixing, and sequentially performing crushing treatment, performing ultrasonic treatment and performing stirring treatment. The tannalbin protein prepared by the method disclosed by the invention can obviously delay diarrhea attack time of mice and reduce the amount of wet excrement of the mice, and has an antidiarrheal effect. Besides, the tannalbin shields the astringent taste of tannin serving as a feed additive, the palatability of a feed is improved, the problem of waste treatment in Chinese gallnut processing factories is solved, environmental protection is facilitated, the utilization value of Chinese gallnut processing screen underflow is improved, the environmental protection burden of Chinese gallnut processing enterprises is reduced, and the method is simple, convenient and feasible. The method disclosed by the invention is green, clean, simple and easy to operate, simple in process route, easy to control in operation conditions and suitable for industrial production, and achieves the purpose of resource utilization of wastes.

The invention relates to a preparation method of an electronic ammonia gas sensor based on non-covalent monatomic layer graphene, which comprises the following steps: (1) preparing graphene into a graphene belt, wherein a substrate of the graphene is provided with a gate electrode, and the graphene belt is used as a channel; then preparing a source electrode and a drain electrode on the graphene belt to obtain a graphene device with a field effect transistor structure; (2) dissolving BP2T powder into methylbenzene to obtain a BP2T molecular solution; and (3) immersing the graphene device withthe field effect transistor structure in the BP2T molecular solution, carrying out non-covalent functionalization treatment, taking out the graphene device, washing the graphene device with toluene, and blow-drying the graphene device to obtain the electronic ammonia gas sensor. The method is simple, the prepared electronic ammonia gas sensor has good selectivity and high ppb grade sensitivity toammonia gas, meanwhile, the recovery process is very simple, the sensor can automatically recover to the initial state after ammonia gas detection is stopped, the sensitivity is high, and the practicability is high.

The invention relates to the field of treatment of functions of islet cells and particularly relates to Quzhou fructus aurantii, a Quzhou fructus aurantii extract and application of a medicine composition containing Quzhou fructus aurantii or Quzhou fructus aurantii extract to protection of islet cells, recovery of the functions of the islet cells, acceleration of insulin secretion or increase ofthe number of the islet cells. The invention creatively develops new medicinal application of Quzhou fructus aurantii and also develops a new application field. The Quzhou fructus aurantii has the effects of protecting the islet cells, accelerating the insulin secretion, recovering the depleted islet cells and increasing the number of the islet cells, has strong pharmacological effects, and is safe and non-toxic; the product is safe, is rich and cheap in raw material resources, free of toxic and side effects, simple in preparation process route, low in production cost and convenient to use, can be prepared into the conventional preparations such as oral preparations and tablets and the like, and is used as an islet cell protection agent which is extremely promising and has good developmentvalue.