176results about How to "Mild process conditions" patented technology

The invention discloses a nano metal oxide insulating material coated soft magnetic composite material and a preparation method thereof, and the preparation method comprises the following steps: (1) putting metal soft magnetic powder and a nano metal oxide insulating material into a steel cylinder equipped with a rotating blade, and rotating the blade to drive the raw material to flow to obtain core-shell composite powder; (2) carrying out annealing treatment on the core-shell type composite powder to obtain a precursor; and (3) mixing the precursor and a lubricant, then pressing the mixture into a green body, and carrying out annealing heat treatment on the green body in a protective atmosphere to obtain the soft magnetic composite material. The prepared soft magnetic composite material is uniform in insulating layer and high in coverage rate, the binding force between the nano metal oxide and the metal soft magnetic matrix is high, the thickness of the coating layer is controllable, the obtained soft magnetic composite material has high magnetic conductivity and lower loss, and the insulating coating method is mild in process condition, simple in equipment, short in coating treatment time, high in efficiency, low in cost and suitable for industrial production. The method is suitable for large-scale production.

The invention belongs to the field of fluorine-containing fine organic chemical synthesis, and particularly relates to a method for continuously and cleanly producing perfluoroolefin epoxide by using hydrogen peroxide. The invention relates to a method for continuously and cleanly producing perfluoroolefin epoxide by using hydrogen peroxide, which comprises the following steps of: reacting perfluoro-2-methyl-2-pentene serving as a raw material in the presence of a polar solvent and hydrogen peroxide serving as an oxidant under the action of a catalyst to obtain perfluoro-2-methyl-2, 3-epoxypentane. The method has the beneficial effects that the micro-reactor is used, and the oxidizing agent, the catalyst, the cocatalyst and the polar solvent are continuously introduced into the pipeline of the micro-reactor, so that the synthesis from the hexafluoropropylene dimer to the epoxy compound is completed in a short time.

The invention discloses a natural polysaccharide assisted MXene porous membrane electrode and a preparation method thereof, and relates to the technical field of electrodes. According to the technical scheme, hydrochloric acid and lithium fluoride are used for carrying out etching and intercalation on an MAX raw material, and MXene dispersion liquid is obtained; mixing the MXene dispersion liquid with a metal ion solution to obtain a metal ion doped MXene solution; mixing the metal ion doped MXene solution with a natural polysaccharide dispersion liquid to obtain a natural polysaccharide modified MXene dispersion liquid; mixing the natural polysaccharide modified MXene dispersion liquid with a template substance, performing vacuum filtration, and performing vacuum drying to obtain a flexible MXene film; and carrying out template substance removal treatment on the flexible MXene film to obtain the natural polysaccharide-assisted MXene porous film electrode. According to the invention, the stacking problem of the MXene material is solved, and the electrochemical performance of the natural polysaccharide-assisted MXene porous membrane electrode is obviously improved.

The invention relates to the technical field of chemical metallurgy, and discloses a preparation and purification method of high-purity sponge vanadium, which comprises the following steps: preparing a vertical vacuum reduction furnace, adding a reducing agent, discharging air in the furnace, and introducing shielding gas; heating, adding vanadium chloride for smelting, taking out, putting into a distillation furnace, and carrying out heating and heat preservation treatment; and finally, putting the product into a crucible in an electron beam furnace, vacuumizing, heating and smelting, introducing protective gas into the electron beam furnace after smelting, and cooling to room temperature to obtain a sponge vanadium product. The high-purity sponge vanadium is prepared by adopting a novel vanadium chloride metal thermal reduction-distillation method, and the sponge vanadium is further purified through vacuum electron beam refining, so that the common technical problems of long flow, low product purity and the like of a traditional method for preparing the high-purity metal vanadium are solved.

The invention relates to the technical field of phase change materials, and discloses a multifunctional composite phase change material and a preparation method and application thereof. The phase change energy storage microcapsule is prepared from the following raw materials: a core material, a Pickering emulsion template and a wall material, the wall material comprises resin and polypyrrole. The multifunctional composite phase change material is prepared from the phase change energy storage microcapsule, a reinforcing material and a polymer elastomer. The phase change energy storage microcapsule provided by the invention is uniform in size, regular in shape, good in stability and good in coating effect, the surface is doubly coated with the resin and the polypyrrole nanoparticles, the phase change material leakage condition is avoided, and the thermal cycling stability is good; the multifunctional composite phase change material has good photo-thermal conversion capability and conductivity and good thermal cycling stability, can meet the multi-scene application requirements in the fields of intelligent wearing, solar energy conversion and human body near-infrared photo-thermal treatment, and is non-powdery and can be directly used.

The invention relates to the technical field of soil improvement, and discloses a carbon-based material as well as a preparation method and application thereof. The carbon-based material is electron shuttle modified lignin. According to the carbon-based material provided by the invention, the lignin is subjected to surface modification by using the electron shuttle, the lignin is rich in resource, easily available in raw material, low in cost, good in stability and harmless, and high electron shuttle activity fragments are introduced on the surface by combining with the electron shuttle, so that the electron shuttle capability is greatly improved; the carbon-based material has the capability of promoting reduction and dissolution of soil minerals, and can be applied to soil improvement, improvement of electron transfer rate between microorganisms and minerals, acceleration of mineral dissolution and activation of soil mineral elements, effective regulation and control of soil iron circulation process so as to improve soil trophism, and guarantee for healthy growth of plants. Compared with a small-molecule shuttle, the shuttle is not easy to deteriorate or lose in the environment, can play a role in soil for a long time, and has great application potential for carbon sequestration and quality improvement of soil and guarantee of crop nutrition.

The invention relates to an easily-activated Ti-Fe-Y-Mn-Zr-Co-Zn-based hydrogen storage alloy and a preparation method thereof, belongs to the technical field of hydrogen storage alloy materials, and solves at least one of the problems of high activation difficulty, long activation period, poor hydrogen absorption and desorption dynamic performance and the like of a Ti-Fe-based hydrogen storage alloy in the prior art. The invention provides a Ti-Fe-Y-Mn-Zr-Co-Zn based hydrogen storage alloy easy to activate, the chemical formula of the hydrogen storage alloy is Ti 1.15, Fe 0.8, Y 0.03, Mn 0.35-x-y-z ZrxCoyZnz, x, y and z are atomic ratios, x is larger than or equal to 0.05 and smaller than or equal to 0.15, y is larger than or equal to 0.02 and smaller than or equal to 0.1, and z is larger than or equal to 0.02 and smaller than or equal to 0.1. The Ti-Fe-Y-Mn-Zr-Co-Zn based hydrogen storage alloy provided by the invention obtains good activation performance and hydrogen absorption and desorption performance by means of component design and preparation process improvement, can be activated at one time under the conditions of 30 DEG C and 3 MPa, and has the hydrogen storage capacity of more than or equal to 1.69 wt.%, the hydrogen absorption platform pressure of more than or equal to 0.39 MPa and the hydrogen desorption platform pressure of more than or equal to 0.3 MPa.

The invention relates to the technical field of flexible electronics, and discloses liquid metal slurry and a preparation method and application thereof. The liquid metal slurry comprises a liquid metal Pickering emulsion; the liquid metal Pickering emulsion comprises liquid metal and a stabilizer; the liquid metal comprises gallium-based liquid metal; the stabilizer comprises cellulose nanocrystals. The liquid metal slurry provided by the invention does not have obvious sedimentation and agglomeration phenomena after standing for 24 hours, is good in stability and has the characteristics of Pickering emulsion, and emulsion microspheres in the liquid metal slurry are micron-sized, uniform in sphere and good in dispersity; the alloy ink obtained by centrifugally purifying the liquid metal slurry can be easily patterned on the substrate, has good adhesiveness with the substrate and low ink mark resistance, and has the potential of being applied to flexible electronics; in the Janus membrane provided by the invention, the compatibility of the liquid metal and the polymer matrix is relatively good, and the Joule thermal performance, the photothermal conversion performance, the softness and the elasticity of the membrane are relatively good.

The invention discloses an all-organic polymer S-type heterojunction photocatalytic material and a preparation method and application thereof.The all-organic polymer S-type heterojunction photocatalytic material comprises a carrier and an organic polymer growing on the surface of the carrier, organic monomers are originally polymerized on the surface of carbon nitride to form an all-organic polymer S-type heterojunction, and the organic monomers are 1, 4-diacetylene benzene, 2, 4-diacetylene benzene and 2, 4-diacetylene benzene. The compound is 3, 5-diacetylene pyridine or 3, 6-diacetylene pyridazine; the preparation method comprises the following steps: (1) adding carbon nitride and a catalyst into a polar alkali solution, and uniformly mixing; and (2) putting an organic monomer into the mixed solution, and carrying out polymerization reaction to generate the all-organic polymer S-type heterojunction photocatalytic material in situ. The carbon nitride is selected as a carrier to be compounded with the organic conjugated polymer, the organic conjugated polymer can be adjusted to be matched with the energy band position of the carbon nitride by changing the molecular structure, an all-organic polymer S-shaped heterojunction is formed, the intramolecular charge transfer rate is higher, and the photocatalytic performance is improved.

The invention provides a 3-amino-2-fluorobenzamide compound and a preparation method thereof, and the preparation method comprises the following steps: (1) carrying out a substitution reaction on 5-chloro-2-hydroxy-3-nitrobenzoic acid to obtain 5-chloro-2-fluoro-3-nitrobenzoyl halide with a structure as shown in a formula I; (2) carrying out an amidation reaction on the 5-chloro-2-fluoro-3-nitrobenzoyl halide and an aniline compound with a structure as shown in a formula II to obtain a 3-nitro-2-fluorobenzamide compound with a structure as shown in a formula III; and (3) carrying out a reduction reaction on the 3-nitro-2-fluorobenzamide compound, so as to obtain the 3-amino-2-fluorobenzamide compound with a structure as shown in a formula IV. The preparation method is low in raw material price, almost quantitative in multi-step reaction, few in by-products, high in target product yield and mild in process condition, avoids severe reaction conditions such as deep cooling and high temperature, and is more suitable for industrial production.

The invention discloses a sanitary ceramic and a preparation method thereof, and belongs to the technical field of ceramics, the sanitary ceramic comprises a ceramic body and a glaze layer, the glaze layer is prepared from the following raw materials in parts by weight: 30 to 35 parts of feldspar, 23 to 26 parts of quartz, 10 to 15 parts of calcite, 5 to 8 parts of dolomite, 6 to 9 parts of zirconium silicate, 3 to 6 parts of zinc oxide, 2 to 3 parts of aluminum oxide, 1 to 3 parts of frit, 0.5 to 2 parts of modified silicon carbide whisker and 0.05 to 0.1 part of dispersing aid. The preparation method comprises the following steps: 1, preparing a sanitary ceramic green body; step 2, carrying out ball milling on the frit in advance according to parts by weight, then adding the rest raw materials, mixing, adding water, continuously carrying out ball milling, and then removing iron and sieving to obtain glaze slip; step 3, uniformly spraying the glaze slip on a sanitary ceramic green body to obtain a glazed green body; and step 4, performing glaze firing on the glazed green body to obtain the sanitary ceramic which is smooth and glossy in appearance and has good anti-pollution and antibacterial effects.

The invention provides a method for preparing high-purity tellurium dioxide powder from refined tellurium slag, and belongs to a deep processing technology of a rare and dispersed element tellurium in the field of nonferrous metallurgy. According to the technical scheme, the method comprises the following steps. The method comprises the steps of tellurium slag water leaching, water leaching liquid impurity removal, solution complexing pretreatment, crude tellurium dioxide neutralization and precipitation with sulfuric acid, crude tellurium dioxide dissolution with concentrated hydrochloric acid, tellurium reduction with sodium sulfite, tellurium oxide powder oxidation with nitric acid, tellurium dioxide dissolution with concentrated hydrochloric acid, tellurium dioxide neutralization and precipitation with a refined tellurium tetrachloride solution, water washing and high-temperature calcination. By means of the steps, the tellurium dioxide powder with the chemical purity meeting the requirements of TeO2 99.90 or TeO2 99.50 of YS / T 1194-2017 tellurium dioxide and the average particle size D50 ranging from 40 micrometers to 75 micrometers can be prepared through the technology, and the tellurium dioxide powder with the chemical purity meeting the TeO2 99.90 or TeO2 99.50 brand requirements of YS / T 1194-2017 tellurium dioxide. In the whole process, the tellurium slag with high impurity content can be used as a raw material, and the impurity content can be effectively removed without electrodeposition of refined tellurium, so that tellurium dioxide is refined. And the process conditions are mild, the equipment is simple, the operation is simple and convenient, and the production period is short.

The application discloses a preparation method of a sodium ion battery hard carbon negative electrode material based on step-by-step synergistic regulation, and comprises the following steps: S1, biomass pretreatment; S2, low-temperature pre-carbonization to obtain biomass pre-carbonized carbon; S3, physical activation: the pre-carbonized carbon is placed in an activation atmosphere to perform medium-temperature activation, and biomass activated carbon is obtained; S4, high-temperature carbonization: the biomass activated carbon is placed in an inert atmosphere to perform high-temperature carbonization, and a hard carbon intermediate is obtained; S5, chemical vapor deposition coating: the hard carbon intermediate is placed in a mixed atmosphere of a coating carbon source and an inert gas to perform chemical vapor deposition coating, and a surface-coated biomass hard carbon negative electrode material is obtained. The application can realize a higher closed pore volume at a milder temperature, and the synergistic regulation pore forming mode of activating and forming pores first and then high-temperature closing pores also avoids the insufficient closed pores caused by single high-temperature treatment.

The invention discloses platinum nanoflower particles with uniform particle size and a rapid synthesis method and application thereof. The synthesis method comprises the following steps: uniformly mixing a chloroplatinic acid solution with a reducing agent, and standing; adding a stabilizer into the solution obtained in the previous step, uniformly mixing, and reacting at 10-95 DEG C; and cleaning to obtain the platinum nanoflower particles. The method has the advantages that the repetition rate is high, a large number of platinum nanoflower particles with good morphology can be effectively obtained, raw materials are easy to obtain, process conditions are mild, and popularization of the platinum nanoflower particles is facilitated.

The invention relates to a silicon-based negative electrode material based on metal oxide coating and preparation and application thereof, and a preparation method of the material comprises the following steps: S1, putting a silicon-based material into a solvent for ultrasonic dispersion to obtain a uniform suspension; s2, adding a metal oxide precursor into the suspension obtained in S1, and carrying out hydrolysis or condensation reaction to generate a continuous metal oxide coating layer on the surface of the silicon-based material in situ; and S3, after the reaction is finished, centrifugally separating, washing and drying the obtained product to obtain the silicon-based negative electrode material, namely a target product. Compared with the prior art, the method provided by the invention is simple in process, low in cost and good in repeatability, and the obtained coated silicon material has excellent structural stability and electrochemical performance and has a wide application prospect in high-energy-density lithium ion batteries and all-solid-state batteries.

The present invention discloses a controlled-release type polymeric ferric sulfate water treatment agent and its preparation method, belonging to the technical field of water treatment functional materials. The water treatment agent consists of polymeric ferric sulfate, an iron ion color indicator, a gel matrix, a cross-linking calcium agent, amino diatomaceous earth, a pore-forming agent and an inert filler. The preparation method includes: first preparing a network gel, then preparing soft materials, and finally obtaining the product through pill-making and drying. The present invention realizes the slow release and controllability of polymeric ferric sulfate, and the color indicator can directly reflect the consumption state of polymeric ferric sulfate, facilitating storage, transportation, dosing and recovery.

The invention discloses a synthetic method of high molecular weight polyacrylate, a pressure-sensitive adhesive and a polaroid, and belongs to the technical field of high molecular materials, the synthetic method of the acrylate comprises the following steps: mixing 55-95 parts by weight of a soft monomer, 5-45 parts by weight of a hard monomer, 0.1-10 parts by weight of a functional monomer and 50-100 parts by weight of a solvent, then putting the mixture into a pretreatment kettle, adding an initiator, deoxidizing, and carrying out heat preservation for 2-3 hours; raising the temperature to 35-65 DEG C and carrying out heat preservation treatment to obtain pretreated kettle liquid; the invention discloses a method for synthesizing polyacrylate, which comprises the following steps of: directly pumping a pretreatment kettle liquid which is 1 / 5-1 / 2 of the total volume into a polymerization kettle, heating to 40-70 DEG C, dropwise adding the residual pretreatment kettle liquid, simultaneously dropwise adding 0.005-1 part by weight of initiator, adjusting the mass concentration of a mixed monomer, carrying out heat preservation reaction for 2-4 hours, and adjusting the solid content. And the polyacrylate is high in molecular weight and narrow in molecular weight distribution.

This invention discloses a method for preparing an aromatic amine-free organic pigment yellow, comprising the following steps: S1, preparing a diazo solution by sequentially adding water, inorganic acid, and diazo components to a diazo tank, stirring and slurrying, then cooling the mixture in the diazo tank to below 0°C and adding nitrite; S2, preparing a coupling solution by sequentially adding water, inorganic alkali, and coupling components to a dissolving tank, stirring and dissolving until clear; S3, coupling reaction by adding water, acetic acid, and surfactant to a coupling tank, stirring and mixing evenly, then slowly adding the diazo solution and coupling solution simultaneously to the coupling tank for a coupling reaction; S4, pigmentation by heating to above 60°C and maintaining the temperature, adjusting the pH of the solution to alkaline; S5, filtering, washing, and drying to obtain an aromatic amine-free organic pigment yellow. This invention is applicable to the synthesis of most mono- and diazo organic pigment yellows, reducing aromatic amine residues during the synthesis process and ensuring that the organic pigment yellow product is free of aromatic amine residues.

The invention discloses a preparation method of a vibron key intermediate with a structural formula II and application of the vibron key intermediate in preparation of vibron. The preparation method comprises the following steps: A, taking a compound shown as a structural formula III as a starting raw material, and carrying out acylation reaction on the compound and a sulfonyl chloride compound in the presence of alkali to obtain a compound shown as a structural formula IV; b, in the presence of alkali, reacting the compound as shown in the structural formula IV with the compound as shown in the structural formula V to obtain a compound as shown in a structural formula VI; c, decarboxylating the compound shown in the structural formula VI in the presence of alkali, removing a protecting group in the presence of acid, and cyclizing to obtain a compound shown in a structural formula VII; and D, reducing the compound as shown in the structural formula VII into the vibron key intermediate as shown in the structural formula II under the action of a metal catalyst and hydrogen. In the imgabs0 #, R1 is selected from a methylsulfonyl group or a phenylsulfonyl group; and R2 is selected from C1-C2 alkyl or benzyl.

The invention discloses a cobalt molybdenum oxide catalyst, a preparation method thereof and a method for preparing propylene by catalyzing oxidative dehydrogenation of propane. The invention aims to provide a preparation method of a cobalt-molybdenum oxide catalyst, and the cobalt-molybdenum oxide catalyst has relatively high selectivity for catalyzing oxidative dehydrogenation of propane to prepare propylene under a low-temperature condition. The technical scheme is as follows: (1) preparing a cobalt nitrate hexahydrate aqueous solution; (2) adding sodium molybdate dihydrate into the cobalt nitrate hexahydrate aqueous solution, and stirring for 30 minutes at normal temperature; (3) slowly dropwise adding the mixed solution to AlOOH powder drop by drop and stirring; (4) putting the mixed paste into a ball milling tank for ball milling for 4 hours; (5) centrifugally drying to obtain a solid product; and (6) calcining the solid product at 500 DEG C for 4 hours to obtain a finished product. Belongs to the technical field of thermocatalytic materials and environmental protection.

The application relates to the technical field of high polymer materials, and discloses a nylon material and a preparation method and application thereof. The nylon material comprises the following preparation raw materials in percentage by mass: 70-85% of nylon resin, 8-15% of nitrogen-based flame retardant, 2-8% of phosphorus-based flame retardant and 1-8% of synergistic flame retardant. The nylon material provided by the application adds the phosphorus-based flame retardant and the synergistic flame retardant in a traditional nitrogen-based flame retardant system, so that the ignition temperature of the material is increased, the dropping speed and the dropping ignition probability are reduced, and the flame retardant performance of the material is improved. The ignition temperature of the material can reach 745 DEG C, the DSC crystallization temperature can reach 187 DEG C, the demolding effect is good, the dropping speed is slow, the dropping ignition probability is low, the performance requirements of a battery assembly product on the material can be met, and the nylon material can be used in the preparation of electronic connectors, battery compartments, low-voltage switches, housings or terminal blocks of power distribution systems of electronic and electrical equipment.

The invention discloses an antibacterial coating material and a preparation method thereof as well as a surgical suture and a preparation method thereof, and belongs to the field of medical materials. The preparation method comprises the following steps: grafting a quaternary ammonium salt group and a catechol group to chitosan, modifying the chitosan, and reacting the modified chitosan with silver nitrate to generate nano-silver. Modified chitosan is adopted as a reducing agent and a stabilizing agent, a stable nano-silver solution is formed under irradiation of light containing ultraviolet rays, the surface of an existing mainstream surgical suture main body is coated with a chitosan nano-silver composite material, and the surgical suture with the good antibacterial effect is obtained. According to the antibacterial coating material and the preparation method thereof as well as the surgical suture and the preparation method thereof, the antibacterial effect can be improved, the preparation method is simple, the process condition is mild, and the antibacterial coating material is suitable for large-scale production.

The invention discloses an electrochemically oxidized starch composite nano silicon dioxide-based adhesive as well as a preparation method and application thereof, and belongs to the technical field of water-based adhesives. The preparation method comprises the following steps: (1) preparing starch slurry from starch, adding sodium ion salt and dilute acetic acid, then carrying out electrochemical oxidation, after the electrochemical oxidation is finished, heating, and dropwise adding water glass and sodium hydroxide for gelatinization, so as to obtain an electrochemically oxidized starch composite nano silicon dioxide-based adhesive matrix; and (2) adding a defoaming agent, a cross-linking agent, an emulsifying agent and pigments and fillers into the adhesive matrix obtained in the step (1) to obtain the electrochemical oxidation starch composite nano silicon dioxide-based adhesive. The process conditions are mild, the raw materials are cheap, easy to obtain, non-toxic and harmless, the bonding strength and the water resistance of the prepared adhesive are effectively improved, the viscosity is effectively reduced, the process convenience of the adhesive during storage and sizing is enhanced, and the adhesive has important application value.

This invention relates to the field of wastewater treatment technology, specifically to a microbial preparation, its preparation method, and its application, comprising: a composite microbial agent; and a calcium alginate / polyvinyl alcohol interpenetrating network aerogel carrier loaded with the composite microbial agent; the aerogel carrier contains uniformly dispersed modified nano-attapulgite clay. The microbial preparation of this invention exhibits good wastewater treatment performance and long-lasting effect.

The invention discloses meta-aramid fibrid and a preparation method thereof, the meta-aramid fibrid comprises, by dry weight, 90.0-99.5 wt% of meta-aramid resin and 0.5-10.0 wt% of an amphiphilic block copolymer additive, and the additive comprises at least one of p-N-methyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone or N, N-dimethyl pyrrolidone. A first block having an affinity for N, N-dimethylacetamide; and at least one second block having an affinity for water. The preparation method comprises the following steps: adding an additive into a meta-aramid resin polymerization liquid to form a composite resin polymerization liquid; injecting the composite liquid into a precipitation bath composed of N-methyl pyrrolidone or N, N-dimethylacetamide and water through a dispersing device, and after precipitation, carrying out solid-liquid separation, washing and drying to obtain the fibrid. Through the synergistic effect of a specific additive and a precipitation bath system, the microstructure of the fibers is actively regulated and controlled, and the specific surface area and the surface roughness of the fibers are improved, so that the tensile strength and the internal bonding strength of finished paper are remarkably enhanced, and meanwhile, the inherent high-temperature-resistant, flame-retardant and insulating properties of meta-aramid fibers are kept.

The invention relates to the technical field of micron motors, and discloses a micron motor and a preparation method and application thereof. The micron motor comprises the following elements: Au and Zn, the mass ratio of the Au element to the Zn element is 1: (3-5). The micron motor provided by the invention comprises an Au element and a Zn element, the micron motor is of a segmented tubular structure, obvious boundaries exist between segments, the Zn element with higher content is enriched to form a Zn segment, the Zn segment is used as a driving segment to promote the motor to move by utilizing a concentration gradient, and the micron motor has higher Zn element content and longer driving segment (Zn segment) length, so that the motor can be driven to move. And longer movement time can be provided for the micron motor. The micron motor is high in biological safety and can effectively stimulate myocardial cells of a mouse to increase the concentration of Ca < 2 + >, so that the micron motor has a good application prospect as a cardiac drug.

The present invention provides a mixed C4 conversion method, which comprises: 1, carrying out full hydrogenation treatment on mixed C4 so as to convert olefins in the mixed C4 into alkanes, step 2, separating the mixture treated in the step 1 to respectively obtain an n-butane component and an isobutane component; and step 3, carrying out oxidation treatment on the n-butane component obtained in the step 2 to obtain maleic anhydride. According to the method, closed-loop conversion of the mixed C4 to the chemical material can be realized, each component can be fully utilized, almost no waste is generated, and meanwhile, each process condition in the method is mild, easy to control, short in flow and simple in process.

The application discloses an ozone micro-nano bubble coupling ultraviolet oxidation wastewater treatment process, which comprises the following steps: filtered wastewater is pumped by a booster pump, and then sequentially passes through a micro-nano bubble jet device connected with an ozone generator and a flow-through ultraviolet lamp, and finally enters an oxidation contact tank; the wastewater in the oxidation contact tank is continuously circulated by the wastewater booster pump, and treated wastewater is discharged after COD reaches a standard. The ozone micro-nano bubble coupling ultraviolet oxidation wastewater treatment process has the advantages that the process is used for treating chemical industrial park wastewater by adopting the ozone micro-nano bubble technology coupling ultraviolet jet advanced oxidation process, ozone utilization rate is high, process conditions are mild, and the removal effect of wastewater COD is good, so the process has great potential in the field of wastewater treatment; the ozone micro-nano bubble coupling ultraviolet advanced oxidation process requires less hardware equipment and has low operation cost, so the process has a broad application prospect in the field of engineering wastewater treatment.

This invention provides an ion-doped calcium oxalate thermochemical heat storage material and its preparation method, the chemical formula of which is Ca. 1‑ x M x C2O4·H2O, where M is a dopant ion and x is the mole fraction of the dopant ion; M includes Mg 2+ Co 2+ Zn 2+ 、Sr 2+ One or more of the following. This invention regulates the lattice parameters, local coordination environment, defect state, and microstructure of calcium oxalate by doping with ions. While maintaining the original reversibility and cycle stability of the calcium oxalate system, it further optimizes its dehydration thermal storage temperature range, thermal response boundary, structural evolution behavior, and application compatibility materials, thereby improving the thermochemical thermal storage performance of calcium oxalate from the internal structural level.

The present application relates to the technical field of catalyst recovery, and discloses a method for recovering low-concentration rhodium catalyst from organic residues containing rhodium catalyst, comprising the following steps: (1) adding a modified temperature-sensitive polymer aqueous solution into isopentanal mother liquor, stirring, and layering after standing; (2) heating the water phase obtained after separation, and causing the rhodium-adsorbed polymer to phase change and precipitate, and then filtering and roasting, so as to obtain the recovered rhodium catalyst. The present application realizes the recovery of low-concentration rhodium catalyst from organic residues containing rhodium catalyst, has high recovery rate, is energy-saving and environment-friendly, has mild process conditions, and can effectively expand the application range of rhodium catalyst.