110results about How to "Novel preparation process" patented technology

The invention relates to a magnetic bionic adsorbent and an application of the magnetic bionic adsorbent in treating acid wastewater containing uranium. A solvothermal method for preparing Fe3O4 by taking PSSMA (poly (4-styrene sulfonate-copolymer-maleic acid) sodium salt) as a surfactant is improved, grain sizes are uniform, and Fe3O4 magnetic nanoparticles can be synthesized on a large scale; biomolecule dopamine is polymerized in a trihydroxymethyl aminomethane buffer system and coats the surfaces of the Fe3O4 magnetic nanoparticles, and the novel magnetic bionic adsorbent with a core-shell structure is established. The magnetic bionic adsorbent has excellent hydrophilicity and larger specific surface area due to the the polydopamine structure of a shell layer, rich functional groups on the surface of the magnetic bionic adsorbent have high uranium adsorption capacity in a wider acidity range, the magnetic bionic adsorbent has higher uranium adsorption capacity and good selectivity, and uranium adsorbed on the surface of the adsorbent can be easily washed with a 0.1 mol/L (NH4)2CO3 solution and can be recycled conveniently.

The invention is a hollow glass desiccant and process for preparation, which belongs to desiccating agent of zeolite molecular sieve, particularly relates to a hollow glass desiccant and process for preparation, which comprises the steps as follows: 3A molecular sieve original powder 50.0-8.0.% and clay 20.0-50.0% are mixed to form main component, then water-soluble adhesive agent 0.1-5.0% (Wt%) and proper amount of water which calculate the main components by percentage by weight are added for balling and pelleting, and water solution of compression strength reinforcing agent 0.1-5.0% (Wt%) which calculate the main component by percentage by weight is sprayed on a balling billet body, then the balling billet body is covered, reinforced, dried in nature, blown, and polished and baked at 480-700 DEG C for 2-6 hours, finally the desiccant can be obtained. The desiccant components of the invention are reasonably matched, the preparation is novel, the structure of the device is simple, and energy is saved. The hollow glass desiccant which is made achieves an idea effect in some aspects of the technical indicator of special requirements for hollow glass desiccant such as compressive strength, powder dropping rate and selective adsorption for each air component and the like.

The invention relates to a production process of a prestress FRP-rib (fiber reinforce plastic-rib) concrete pipe pile. The production process is characterized by comprising the following steps of 1) concrete production, 2) FRP-rib frame skeleton production, 3) end board production, 4)pulling board production, 5) sleeve anchoring, 6) installation of the FRP-rib frame skeleton, 7) concrete material distribution, 8) moulding, 9) prestress tension, 10) centrifugal processing, 11) maintenance and 12) demoulding. By creatively choosing the FRP-rib as a substitute of the pipe pile steel bar and utilizing a tension method applicable to the FRP-rib, structural durability is improved. Compared with common prestress pipe piles, the prestress FRP-rib pipe pile has higher corrosion resistance; while compared with a FRP rib pile, the prestress FRP-rib concrete pipe pile has the advantages of high strength and high bearing capacity. Besides, with novel production process of reasonably utilizing a FRP-rib tension process on a pipe pile, and good effects are achieved.

A composite spherical active carbon adsorbent is prepared by the following raw materials by weight: 100-120 parts of active carbon, 20-25 parts of clay, 6-8 parts of glyceryl triacetate, 15-20 parts of wooden saw dust, 5-7 parts of eleaostearic acid, 15-20 parts of walnut shell, 7-9 parts of polyacrylamide, 3-5 parts of titanium dioxide, 4-5 parts of modified diatomite, and a proper amount of water. The spherical active carbon adsorbent has advantages of reasonable composition, novel preparation technology and simple equipment structure, the prepared finished product reaches an ideal effect on the indexes of compressive strength, powder drop rate, iodine adsorption, benzene adsorption and desulphurization; and the spherical shape makes it easy for the adsorbent to flow, and makes it convenient for the adsorbent to be subpackaged and packaged by using current various packaging equipment. Titanium dioxide is used to make the adsorbent provided by the invention have advantages of very strong UV absorption performance, infrared reflection characteristic, self-cleaning performance, and sterilization and deodorization in the medical field.

The invention discloses a preparation method of an antistatic polyvinylidene fluoride/polylactic acid composite porous fiber membrane, belonging to the field of porous fiber membranes. In the present invention, polyvinylidene fluoride and polylactic acid are respectively dissolved in a solvent, and additives are added to obtain a spinning liquid, and the spinning liquid is prepared by electrospinning to obtain a composite fiber, and the fiber obtained by spinning is immediately added to the solvent Perform annealing treatment to obtain a composite porous fiber membrane, and load nano-zinc oxide antistatic particles in the composite porous fiber membrane to obtain an antistatic composite porous fiber membrane. Hydrophilic modification of polyvinylidene fluoride, and the use of zinc acetate and diethanolamine to prepare a porous fiber membrane loaded with nano-zinc oxide conductive particles, the obtained membrane not only has excellent mechanical strength, but also has good antistatic effect, and has a wide range of applications application prospects.

In this invention, we extract raw polysaccharides from changium root named A B C respectively, and purify to get 6 polysaccharides I,II,III,IV,V,VI. After sulfation, we get sulfated polysaccharides A1, B1,C1. A1 has two sulfate groups on each monosaccharide at the average while B1 and C1 have three. The sulfated polysaccharides' molecular weight is more than 2 million D. The glycoside link is alpha type. The whole procedure of changium root sulfated polysaccharides is as followings: extract raw polysaccharides from changium root, and then get the polysaccharides sulfated. It is advantageous in simplied-manipulation and low cost. The pharmacological experiments prove its obvious suppression on rat transplanting tumor(S-180) and the reduction of platelet aggregation ratio and whole blood viscosity. It also reduces coagulant time.

The invention provides a magnetic alloy hollow microsphere and a preparation method thereof. The components of the microsphere comprise cobalt and nickel. The structural formula of the microsphere isshown as Capable of<x>Ni<1-x>, wherein x is greater than or equal to 0.14 and less than or equal to 1. The microsphere is of a hollow structure and has the diameter being 0.32-3.35 microns, the wall thickness being 4-370 nm and the saturation magnetization intensity being 80.4-152.89 emu.g<-1>. The microsphere is prepared through a mixed solvent high-temperature liquid phase reduction method. Thepreparation method comprises the steps of adding an organic solvent, water and a surface active agent into three flasks in proportion to be stirred for 10 min; adding metal salt to be subjected to electric stirring for 2 h, and dropwise adding a reducing agent to be subjected to electric stirring for 1 h; conducting reflux condensation at 170-197 DEG C for 3-4 h, and conducting repeated magnetic separating and washing through ethanol after cooling; and finally, conducting drying to obtain the required magnetic alloy hollow microsphere. The magnetic alloy hollow microsphere is made of a raw material which is low in price and easy to get. The magnetic alloy hollow microsphere is low in cost, simple in process, high in efficiency and easy to popularize. A magnetic ball chain has the properties of size and composition adjustability and can be applied to magneto-rheological, magnetic separation, catalytic and electrode materials and microwave absorption or high-density magnetic recording materials.

The invention discloses a perovskite composite oxide loaded platinum catalyst and preparation and application thereof. The preparation is characterized in that the loaded platinum catalyst is preparedfrom SBA-15 as a hard template agent, a chloroplatinic acid aqueous solution as an active component precursor and a YCoxFe1-xO3 perovskite composite oxide as a carrier through impregnation, drying, calcination and reduction of a sodium formate aqueous solution, and is used for a selective hydrogenation reaction of cinnamyl aldehyde. Compared with the prior art, the perovskite composite oxide loaded platinum catalyst has the advantages that Pt particle distribution is uniform, the specific surface area and the pore volume are large, and the loaded platinum catalyst is used for the selective hydrogenation reaction of cinnamyl aldehyde, is higher in catalytic activity, is simple in preparation process, is easily produced industrially, and is environmentally friendly in the reaction process.

The invention discloses a preparation method of 2-methyl-8-aminoquinoline. The preparation method is characterized in that the 2-methyl-8-aminoquinoline is prepared from o-nitrophenol through a process line of reduction, cyclization and amino substitution. An oxidant is selected from one or more of the o-nitrophenol, ammonium ceric nitrate, vanadic acid and iron oxide, and a catalyst is selected from ammonium chloride-cobalt chloride, palladium-aluminum trioxide or aluminum trioxide-silicon dioxide.

The invention relates to a high-strength fireproof insulation board with a tongue-and-groove structure and a manufacturing method of the high-strength fireproof insulation board. The insulation boardcomprises upper layer color steel, a common rock wool board and lower layer color steel, and the common rock wool board is located between the upper layer color steel and the lower layer color steel.The upper surface and the lower surface of the common rock wool board are bonded with the upper layer color steel and the lower layer color steel correspondingly, the upper layer color steel and the lower layer color steel are connected in a pressing mode at the left ends and the right ends to form a tongue and groove, the tongue and groove is provided with a cavity, the cavity is internally provided with a high-density rock wool filling block, the cavity of the tongue and groove is filled with the high-density rock wool filling block, the left end and the right end of the common rock wool board are flush cutting surfaces, the inner end of the high-density rock wool filling block is tightly attached to the cutting surface of the common rock wool board, and the outer end of the high-densityrock wool filling block is tightly attached to an inner cavity wall of the tongue and groove. Compared with the prior art, the tongue and groove is good in insulation performance, a high-density rockwool material is adopted, the hardness is high, the smooth insertion connection of the tongue and groove is ensured, and the high-strength fireproof insulation board has the advantages of good insulation performance, high strength, fire prevention and the like.

The invention relates to an instant waxberry lozenge and a preparation method thereof. The instant waxberry lozenge comprises the following components in parts by weight: 10 to 20 parts of waxberry powder, 20 to 30 parts of white sugar, 30 to 40 parts of sorbitol, 10 to 20 parts of adhesive, and 2 to 5 parts of lubricating agent. The method comprises the following preparation processes of: pre-treating waxberry to obtain waxberry juice and waxberry residue, respectively performing spray drying and superfine crushing on the waxberry juice and the waxberry residue to obtain the waxberry powder, mixing the waxberry powder, the sweetening agent, the adhesive and the lubricating agent in a ratio, granulating, tabletting and drying, and thus obtaining a finished product. The waxberry powder is prepared by the spray drying and superfine crushing technology, so that the absorption and utilization rate of active ingredients of the waxberry is improved; the waxberry residue is reasonably utilized, so that the waste is changed into valuable, and the costs of the raw materials are reduced; and the product is prepared into the lozenge, so that the problems about moisture absorption and caking of the waxberry powder and degradation and subsequent precipitation of anthocyanin in the juice are solved, and the lozenge is convenient to store and transport. The preparation method is simple and low in cost, the instant waxberry lozenge has rich nutrition, and the nutrition and the flavor of the waxberry are kept.

The invention belongs to the technical field of nano hybrid materials, and particularly relates to a silicon dioxide modified organosilicon defoaming agent and a preparation method thereof. The preparation method of the defoaming agent comprises the following steps: firstly, mixing an organosilicon raw material I with a catalyst, heating to 90-130 DEG C under a stirring condition, reacting for 20-60min, and then adding modified nano SiO2 to continuously react for 30-60min to obtain a compound A; or adding the modified nano SiO2 into the organosilicon raw material II to react for 30-60 minutesat 30-130 DEG C to obtain a compound B; adding a blocking agent into the compound A or the compound B for blocking, then removing unreacted catalyst, and carrying out reduced pressure distillation andcooling to obtain the defoaming agent. According to the preparation method, the organic silicon and the silicon hydroxyl on the surface of the SiO2 are combined by chemical action through adding thesurface-modified nano SiO2 to obtain the defoaming agent with a spatial network structure; the defoaming effect of the defoaming agent is good, the durability is good, and the defoaming efficiency canbe regulated and controlled.

The invention discloses a preparation method of dandelion tea. The preparation method comprises the following steps of picking fresh dandelion leaves and eucommia leaves, performing thorough cleaning and performing spin-drying; performing shredding; performing microwave fixation ; performing blow-drying with hot blast; adding honey and performing twisting for 5-6 times; adding honeysuckle tea, dandelion roots, dried lotus leaves , green tea and Chinese wolfberry fruits and performing mixing; performing low-temperature freezing and drying; performing crushing; and performing vacuum packing . The dandelion tea prepared by the method disclosed by the invention is delicately fragrant in taste, slightly bitter, sweet in aftertaste and rich in nutrition.

The invention discloses a zinc-air battery and a preparation method and application thereof. A three-dimensional carbon nanotube jungle composite material is used as an oxygen reduction reaction (ORR)and oxygen evolution reaction (OER) electrocatalyst, the three-dimensional carbon nanotube jungle composite material is loaded on a conductive substrate to be used as an air electrode, and then the air electrode, an electrolyte and a negative electrode conventionally form the zinc-air battery. The invention provides a new way for preparing the efficient and controllable three-dimensional CNT through adopting a one-step pyrolysis gas phase method. The pipe diameter of the CNT and the particle size of the embedded metal particles are fine and uniform and are uniformly dispersed, and the CNT hasa large specific surface area and rich micro/nano hole channels, so that more active sites and substance transmission can be exposed, extremely small overpotential and excellent stability are shown in ORR and OER processes, and the material is successfully applied to the ZAB as a positive electrode catalyst, and shows good cycling stability and relatively small potential polarization.

The present invention provides a preparation method of chemical compound of trifluoromethylhypnone shown by formula (I), the method includes that: trifluoromethylphenyl halides shown in formula (II) and ethenyl-ethers type shown in form (III) are adopted as the raw material , reaction is carried out for 1-50 hours under agitation under 50 DEG C to 150 DEG C in an apolar aprotic solvent, with the presence of catalyst of palladium acetate and macroporous alkalescence styrene anion-exchange resin shown in form(IV) , after the reaction, the reaction liquid is isolated and purified to obtain the chemical compound of trifluoromethylhypnone; the preparation method has novel technicst, low cost, easy operation, recyclable resin, with minor environmental pollution because of absence of organic phosphine ligands, little molecular organic amine and inorganic alkali.