72results about How to "With industrial applications" patented technology

The invention discloses a method for preparing WC-Co nano composite powder by in situ reduction and carbonization, which comprises the following steps: 1, preparing a mixed solution containing W, Co and C or mixed solution containing W, Co, C and inhibitor raw materials or an emulsion; 2, carrying out hydrothermal reaction; arranging the mixed solution obtained in step 1 in a hydrothermal reaction kettle, sealing, heating to 120-200 DEG C, preserving the temperature for 2-15h, cooling to the room temperature, and then filtering, cleaning and drying the reactants to obtain presoma powder; 3, reducing and carbonizing; and 4, directly arranging the presoma powder obtained in step 2 in a vacuum furnace or protective atmosphere furnace, and heating to 800-1100 DEG C to carry out reduction and carbonization reaction with the reaction time of 0.5-6h to obtain WC-Co and WC-Co nano composite powder containing an inhibitor. The raw material used in the method is cheap, the process is simple, the product is pure, particles are fine and uniform, the defects of long cycle, nonuniform mixing and the like of a ball-milling mixed material process can be avoided, the preparation cycle is shortened, the production cost is reduced, and the method has the advantage of industrial application.

The invention discloses a preparation method for a high-entropy alloy. A pure element or master alloy powder mixture is adopted as a raw material and is directly put into discharge plasma sintering (SPS) equipment, a vacuum hot pressing reaction is conducted, and the bulk high-entropy alloy is fast sintered and synthesized; and the integration of the densification of the alloy bulk material and the solid solution phase of the high-entropy alloy is achieved through the precise control over the SPS sintering parameters, and the dense high-entropy alloy bulk material is obtained at a time. The high-entropy alloy prepared through the technology is high in densification, uniform in structure and excellent in mechanical performance. The preparation method has the outstanding beneficial effects that the equipment and process are simple, the efficient and fast functions are achieved, the production cost is low, and the reliability is high and is suitable for the industrial production of the high-entropy alloy.

The present invention is the preparation process of 3, 3', 5, 5'-tetralkyl-4, 4'-diphenol, and features that material 2, 6-dialkyl phenol is first oxidized and coupled with salt oxidant to produce 3, 3', 5, 5'-tetralkyl-4, 4'-biphenyl diquinone, and 3, 3', 5, 5'-tetralkyl-4, 4'-biphenyl diquinone is then reduced with cheap efficient inorganic reductant to obtain 3, 3', 5, 5'-tetralkyl-4, 4'-diphenol. The preparation process of the present invention is novel, mild in reaction condition, less in side product, simple and low in cost, has no need of blowing in oxygen or pressurizing air and special reaction apparatus, and has industrial application foreground.

The invention provides a preparation method for polysubstituted indole derivatives. The preparation method comprises employing alkynyl-terminated hydrocarbon, a halogenated aniline derivative and a disulfide as initial raw materials, using an amino acid as an additive and a copper salt as a catalyst, performing a coupling-tandem one-pot reaction in an organic solvent under an alkali-added condition, so as to obtain the corresponding polysubstituted indole derivative, wherein the catalyst is CuX, and X is iodine or bromine. According to the technical scheme, the method for synthesizing the polysubstituted indole derivatives through one-pot process is developed on the basis of a method for synthesizing 2-substituted indole through copper catalysis. The method does not employ an expensive palladium catalyst easily polluting environment. The method enables alkynyl-terminated hydrocarbon, one halogenated aniline derivative and one disulfide to have the coupling-tandem one-pot reaction under a relatively mild condition, is simple in technology and strong in operationality, and possesses industrial application prospect.

The invention belongs to the technical field of organic chemical industry, and in particular, relates to a preparation method of a polysubstituted benzofuran derivative. The method is a coupling-tandem one-pot method, terminal alkyne, a halogenated phenol derivative and disulfide or diselenide undergo a reaction, amino acid is used as an additive, a copper salt is used as a catalyst, and under a condition of adding an alkali and in an organic solvent, a reaction is carried out to prepare the polysubstituted benzofuran derivative. An expensive palladium catalyst easily polluting the environment is not adopted, the reaction conditions are relatively mild, the process is simple, the operation is high, and the method has the prospect of industrial application.

The invention discloses a palladium-based dual functional film and its preparation method. The palladium-based dual functional film contains a palladium film or palladium alloy film deposited on the surface of porous ceramics and is characterized in that pore channels of the porous ceramics are loaded with a methanation catalyst. The preparation method comprises steps of: loading the methanation catalyst into the pore channels of the porous ceramics by an immersion method and preparing the palladium or palladium alloy film on the surface of the porous ceramics by a chemical plating or chemical plating and electroplating coupling method. According to the palladium-based dual functional film, the methanation catalyst is loaded in the pore channels of the palladium film or palladium alloy film porous carrier so as to realize the coupling of film separation and carbon monoxide catalytic methanation. When the film is used for hydrogen separation and purification, trace carbon monoxide and carbon dioxide leaked from defects of the film can undergo catalytic methanation, thus satisfying special hydrogen requirements. The preparation technology of the palladium-based dual functional film provided by the invention is mature, simple and easy to operate, and can be suitable for industrial application.

The invention relates to a power assisting bracket of a bench pressing machine. Specifically, the power assisting bracket of the bench pressing frame is simple in structure, can help a user start the barbell bench pressing action through power assisting, and further comprises the following parts: a tubular fixing part, a spring, a cover and a movable part, wherein before the barbell bench pressing action is started, a barbell bar is placed on a supporting plate, and the spring is compressed, besides, when the barbell bench pressing action is started, the power assisting bracket of the bench pressing frame deviates from the position right above the chest of the user, so that the user can start the barbell bench pressing action individually with power assisting of the spring.

The invention provides a method of adopting comprehensive technology to improve smoking quality of reconstituted tobacco. The method includes following steps: (1), combining feruloyl esterase with white rot fungus lignin degrading enzyme laccase for fermentation; (2), combining tannic acid with tartaric acid for precipitation; (3), concentrating: vacuum concentrating extract obtain in the step (2) at temperature of 75-85 DEG C until solid content is 40% to obtain reconstituted tobacco concentrate with smoking quality improved; (4), preparing a substrate: using a dryer to dry residue of reconstituted tobacco after extraction at 100-120 DEG C, inactivating enzyme, manufacturing and adjusting to be a tobacco filling material with certain water content, and forming tobacco fiber into a sheet to make the tobacco substrate; (5), rolling: spraying the concentrate obtain in the step (3) onto the tobacco substrate obtained in the step (4), and rolling to obtain the reconstituted tobacco. By the method, irritation of the reconstituted tobacco can be lowered, offensive odor can be reduced, smoke is gentle, and the smoking quality of the reconstituted tobacco is improved.

The invention provides a coating composition comprising zein, pectin and a plasticizer. The invention also provides a coated drug preparation and a preparation method thereof. The coating composition provided by the invention contains natural polymer zein and pectin, is good in stability and water resistance, and can effectively realize controlled release of a drug. The coated drug preparation provided by the invention adopts the coating composition for coating film coating, so that the controlled release of the drug at different time and different parts can be realized. The preparation method of the coated drug preparation provided by the invention is simple, is good in film forming property, and has a great potential for industrial application.

The invention provides a method for improving fragrance quality of reconstituted tobacco by biotechnology. The method comprises the following steps: (1) strain activation: slant culture medium is inoculated with Enterobacter mori VL4-3 to obtain a slant culture, then a seed culture medium is inoculated with the slant culture, and transformation is conducted to obtain a seed culture solution; (2) complex biotransformation pretreatment: in the reconstituted tobacco extraction process, a reconstituted tobacco aqueous solution is inoculated with the seed culture solution, a compound enzyme of clostridium butylicum feruloyl esterase, lignin peroxidase (Lip) and manganese peroxidase (MnP) is added, uniform stirring and mixing are performed, and fermentation is conducted to obtain a reconstituted tobacco biotransformation solution; (3) reconstituted tobacco is produced through a conventional process of reconstituted tobacco, wherein in the process, the temperature exceeds 75 DEG C, enzymes and the bacteria are inactivated, and rolling is conducted to obtain the reconstituted tobacco. According to the reconstituted tobacco, of which the fragrance quality is improved by the biotechnology, produced by the method, the irritation is reduced, the green miscellaneous gas is reduced, the fragrance is rich and elegant and is sweet as milk, and the fragrance quality of the reconstituted tobacco is improved.

The invention provides a recovery method of a waste polyester blended fabric containing natural fibers. The recovery method comprises the following steps: putting the waste polyester blended fabric ina water soluble tertiary amine oxide solution containing an antioxidant, so that the natural fibers are dissolved to form a fiber solution and a solid insoluble matter; then recovering the fiber solution to obtain regenerated natural cellulose fibers and recovering a polyester solid through sequentially adding an ester solvent and fatty alcohols in the solid insoluble matter. The recovery methodprovided by the invention can separate polyester from other natural fibers, is suitable for all polyester blended fabrics, makes up the blank in the prior art, has high recovery rate for the polyesterand the regenerated natural cellulose fibers and avoids the use of a chemical reagent with high toxicity and large irritation, and the used reagent can also be recycled. The recovery method providedby the invention has the advantages of being high in efficiency, low in cost, environmentally-friendly, wide in application range and the like, thereby having industrial application potentials.

The invention provides a method for improving the sensory quality of reconstituted tobaccos through biotransformation. The method comprises the following steps that 1, strain activation is performed: bacillus methylotrophicus (VJ4-1) is inoculated to an oblique-plane culture medium and then is inoculated to a seed culture medium, and a seed culture solution is prepared through transfer; 2, composite biotransformation pretreatment is performed: in a reconstituted tobacco extraction process, the seed culture medium in the step 1 is inoculated to a reconstituted tobacco water solution, penicillium citrinum feruloyl esterase, xylanase, glucose oxidase, catalase, phenol oxidase and other complex enzymes are added, stirring and even mixing are performed, and a reconstituted tobacco biotransformation solution is obtained through fermentation; 3, the reconstituted tobaccos are produced through a conventional reconstituted tobacco process, the temperature exceed 75 DEG C in the process, the enzymes and bacteria are inactivated, and the reconstituted tobaccos are obtained through rolling. The produced reconstituted tobaccos with the aroma quality improved by adopting a biotechnology have good aroma with a slight milk flavor, the irritation is reduced, green miscellaneous smell is decreased, and the sensory quality of the reconstituted tobaccos is improved.

The invention relates to the technical field of microbial fermentation, in particular to furfural-tolerant actinobacillus succinogenes GXAS-137FM as well as a breeding method and application thereof.Actinobacillus succinogenes GXAS137 is used as a primary strain, and a strain GXAS-137FM capable of tolerating the concentration of 1.6 g/L furfural is obtained through a biological domestication method. The strain can be used for industrial large-scale production of succinic acid, and has the advantages of no pollution and low cost.

The invention provides a comprehensive method for all-around improvement of quality of reconstituted tobacco. The comprehensive method comprises the following steps: (1) compound fermentation: in a reconstituted tobacco extracting process, fermenting a reconstituted tobacco water solution with a compound of aspergillus niger, feruloyl esterase, soil lignin peroxidase, bacillus licheniformis powder and freeze-dried lactobacillus powder; (2) adsorbing nicotine in an extracting solution by virtue of strong acid in-exchange macroporous resin for 30-60min, and conducting filtering to remove the nicotine by virtue of a sieve so as to obtain an extracting solution; (3) concentrating the reconstituted tobacco in a vacuum environment at 75-85 DEG C until a solid content is 40%, so as to obtain a concentrated solution; (4) drying residues, which are obtained by extracting the reconstituted tobacco, by virtue of a dryer at 100-120 DEG C, and deactivating enzyme and bacteria so as to obtain tobacco substrates; and (5) rolling the tobacco substrates. With the application of the comprehensive method provided by the invention, the produced reconstituted tobacco is low in irritation, mellow in taste and smell, elegant in aroma, light in green miscellaneous gas and smooth in smoke, and the all-around improvement of the quality of the reconstituted tobacco is achieved.

The invention relates to the technical field of photoelectrocatalysis, and specifically discloses a novel composite electrode as well as a preparation method and application thereof. The composite electrode comprises an electrode substrate, titanium dioxide nanotubes, acidified carbon nanotubes, an imidazole type ionic liquid and phosphomolybdic acid in sequence from the inside to the outside; andthe preparation method comprises the steps of preparing the titanium dioxide nanotubes on the electrode substrate, then supporting the acidified carbon nanotubes on the titanium dioxide nanotubes, depositing the imidazole type ionic liquid, and depositing phosphomolybdic acid. The composite electrode provided by the invention can efficiently degrade polycyclic aromatic hydrocarbons at a lower current density.

The invention belongs to the technical field of heavy metal sewage treatment, and particularly relates to a heavy metal adsorption fiber membrane which is formed by staggering and weaving PVDF-coated PAN composite fibers. The PVDF-coated PAN composite fiber comprises a PVDF core fiber and a PAN shell layer coating the PVDF core fiber, and the outer surface of the PAN shell layer is a functional layer subjected to oximation and/or carboxylation modification treatment. In addition, the invention also provides a preparation method of the fiber membrane. The invention provides a PVDF-coated PAN (Polyvinylidene Fluoride) composite fiber with a brand new structure and a fiber membrane material obtained by interlacing and weaving the fiber. Research finds that the membrane material disclosed by the invention has excellent metal adsorption performance and also has excellent mechanical performance and cyclic adsorption stability.

The invention discloses a method for preparing gelatin by an ultrasonic assisted enzyme method, and belongs to the field of gelatin preparation. The method is as follows: using hydrochloric acid for decalcification of defatted bone meal with the particle size of less than or equal to 600 mu m, filtering with gauze, adding water into the obtained decalcified bone meal for mixing to obtain slurry, adding an inorganic acid to adjust the pH value of the slurry to 1.5-4.5, then adding protease for enzymolysis, applying ultrasonic wave to the slurry while the enzymolysis, after solid-liquid separation by a centrifuge, removing the protease from water washing slag, adding water into enzymolyzed ossein for mixing, adjusting the pH value of the slurry, heating for extraction to obtain mixed slurry containing gelatin, using the centrifuge for solid-liquid separation to obtain a gelatin transparent solution, filtering, desalting, performing ion exchange, concentrating and drying to obtain a high quality gelatin product with the gel strength greater than 240Bloomg and viscosity higher than 4.6mPa.s. The yield of ultrasonic assisted enzymatic hydrolysis is improved by over 10% compared with that of conventional enzymatic hydrolysis.