58results about How to "Reduce the chance of side effects" patented technology

The invention discloses a method for removing heavy metal and organic matter composite pollutants in a water body by means of zero-valent iron and persulfate. According to the method, bentonite-supported nanoscale zero-valent iron and persulfate are added to the water body containing heavy metal and organic matters, a multi-phase coexistent system is formed, and the heavy metal and the organic matters are removed. Cr(VI) and phenol contained in the water body can be removed simultaneously with the bentonite-supported nanoscale zero-valent iron and potassium persulfate combined method, the heavy metal Cr(VI) is removed through the strong reduction performance of the nanosacle zero-valent iron, Fe2+ generated by the nanoscale zero-valent iron in the reaction process is fully used to activate potassium persulfate, so that SO4<->* is continuously generated to oxidize and degrade phenol, and the heavy metal and organic matter composite pollutants in the water body are removed synergistically.

The invention discloses a preparation method of water-heated carbon cladding lithium iron phosphate, aiming to provide a preparation method of water-heated carbon cladding lithium iron phosphate, which can overcome the deficiencies of nonuniform and loose cladding and the like of the traditional carbon cladding method. In order to solve the problem, the adopted technical scheme comprises the following steps of: Step 1. mixing lithium iron phosphate powder and organic solution according to the mass ratio of (10-30):100, adding dispersing agent, and carrying out ultrasonic stirring for certain time to obtain well dispersed suspension; Step 2. transferring the well dispersed suspension to a reaction kettle and making the well dispersed suspension react at the temperature of 120 to 300 DEG C for 3 to 10 hours; Step 3. after reaction, cooling the material to the room temperature and then filtering, and washing the material by water and ethanol in sequence; and Step 4. drying the washed material in a vacuum or inert environment at the temperature of 80 to 150 DEG C for 3 to 6 hours to obtain the water-heated carbon cladding lithium iron phosphate powder material. The water-heated carbon cladding lithium iron phosphate prepared by the preparation method has the advantages of uniform and compact cladding, long service life and the like.

The invention relates to an unsaturated C4 selective hydrogenation catalyst and a preparation method and application thereof. The catalyst is prepared from Pd, Cu and a carrier. The catalyst is used for selective hydrogenation removal of C4 alkynes and dienes, unsaturated C4 molecules are converted into butene through hydrogenation, and therefore the purpose of removing unsaturated C4 is achieved.

The invention relates to a continuous production method of high-content high-optical-purity lactate. The continuous production method of high-content high-optical-purity lactate includes the steps of adding catalyst in lactic acid to allow for polycondensation to obtain lactic acid oligomer with 1000-2500 molecular weight; adding catalyst into the lactic acid oligomer to allow for depolymerization to obtain crude lactide; and refining the crude lactide, and subjecting the refined lactide and organic alcohol to full-reflux reaction to obtain lactate. The continuous production method is simple in process, easy and simple to operate and suitable for industrial production and application. The materials can all be utilized. No 'three wastes' emission occurs. Content of the synthetized lactate is more than 99.5%, and optical purity of the lactate can reach more than 99%.

The invention discloses an energy-saving and environmental-protection butyl acrylate production method. The method comprises the following steps: adding reaction raw materials comprising acrylic acid and n-butanol into an esterification kettle according to a molar ratio of 0.8-1:1, adding a catalyst accounting for 0.5-5% of the total mass of the added materials and a polymerization inhibitor accounting for 0.01-0.1% of the total mass of the added materials into the esterification kettle, carrying out a steam heating reaction in the esterification kettle to form an esterification product, allowing the esterification product to enter an esterification tower in an ester-water azeotrope form, separating, extracting from the top of the esterification tower, condensing through a condenser, and adding the obtained condensed product to a phase splitter to layer in order to an ester phase with the content of crude ester of 85-95%; returning most of a kettle liquid of the esterification kettle to the esterification kettle in order to reflux, allowing a small amount of the kettle liquid to enter a cracking system, and carrying out cracking recovery; and carrying out reboiling heating treatment on the returned most kettle liquid, and adjusting a reboiling system to guarantee the full reaction of the raw materials, effectively control the temperature of the esterification kettle and avoid side reactions. The method can effectively reduce the occurrence probability of the side reactions and the wastewater treatment difficulty, saves energy by 5-15%, and is economic and environmentally-friendly.

The invention belongs to the technical field of an organic silicon surface wetting agent and particularly relates to a polyether modified trisiloxane wetting agent and preparation and application methods thereof. According to the polyether modified trisiloxane wetting agent disclosed by the invention, a Pt(0) catalyst is loaded by a nano-pore material; and in a reactor, reaction is performed (the reaction time is shorter than or equal to 2h) to obtain the polyether modified trisiloxane wetting agent. The polyether modified trisiloxane wetting agent disclosed by the invention has a viscosity of 20 to 100cSt and surface tension of smaller than or equal to 21mN/m; when the polyether modified trisiloxane wetting agent is used in a water-based paint, the polyether modified trisiloxane wetting agent can still have excellent wettability on a base material after being aged at a high environment temperature of 40 to 70 DEG C under the alkali condition of pH of 10 for a long time of 200h and no shrinkage cavity or spots are generated on a film; and the polyether modified trisiloxane wetting agent disclosed by the invention can be applied to the field of a water-based leather finishing agent (high-temperature coating), a water-based material, wood lacquer, agricultural chemical reagents and the like and has rapid-extension property, wettability and environmental adaptation. The methods disclosed by the invention have the advantages that the production efficiency is high and the production cost is low, the operation is simple, and the methods are non-toxic and environmental-friendly.

The invention discloses lithium cobaltate for a positive electrode of a lithium ion battery and a preparation method of the lithium cobaltate for the positive electrode of the lithium ion battery. The proportional formula of the lithium cobaltate prepared by adopting the method is shown as LixCoyMzO2, wherein M represents for one or two of transition metal elements except Co or alkaline earth metals elements; S represents for an average valence of all metal elements of the lithium cobaltate except lithium and cobalt; a mole ratio of four elements in the positive material-lithium cobaltate is x to y to 2 to 2; S is greater than or equal to +2 and less than +2.5; x is greater than or equal to 0.9 and less than or equal to 1.1; y is greater than or equal to 0.8 and less than or equal to 1.1; x plus 3y plus S*z is equal to 4. The lithium cobaltate prepared by adopting the method has the high volume capacity density, the high safety, the stable charge-discharge cycle performances and the high compaction density.

The invention relates to a method for synthesizing an anti-infective drug, namely besifloxacin. The method comprises the steps of taking 2,4,5-trifluorobenzoic acid as a starting material, condensing L-amino caprolactam and 1-cyclopropyl-6,7-difluoro-4-oxo-1,4-dihydro-3-quinoline carboxylic acid to obtain (R)-7-(3-amino hexahydro-1H-azepine-1-yl)-1-cyclopropyl-6-fluorine-1,4-dihydro-4-oxygen-3-cinchoninic acid, and chloridizing with chlorosulfonic acid to obtain the final product besifloxacin. According to the new method for synthesizing the besifloxacin, the preparation method is simple, the reaction is easy to control, an intermediate is stable and easy to obtain, the yield is higher, and industrial production, storage and transportation are facilitated.

The invention provides an industrial preparation method of high-yield cinnamaldehyde. The method includes the following steps of: A, adding a solid catalyst and a water solution of polyethylene glycol 400 to a reaction vessel, then adding benzaldehyde; B, adding dropwisely 30 % to 50% by mass of an acetaldehyde water solution slowly with stirring, after the dropwisely adding, controlling the temperature from 25 DEG C to 30 DEG C for a reaction for 3 to 5 hours; C, performing washing after the completion of the reaction, and allowing the mixture to stand for delamination; and D, performing distillation after separating out an oil layer to obtain the cinnamaldehyde. The method in the invention is advantaged in operational simplicity, easiness in obtaining raw materials and in preparation of the catalyst, simple recovery, environmental friendliness, continuous operation, fast forward reaction speed compared with common processes, low probability of a side reaction, reduced unit energy consumption of a product as well as stable quality, high yield, and high purity of the produced cinnamaldehyde.

The invention discloses a carbon nano-tube net/Ni(OH)<2>/PPY composite electrode, a preparation method and application, belonging to the technical field of super capacitors. The carbon nano-tube net/Ni(OH)<2>/PPY composite electrode is a core-shell structure; a core is composed of Ni(OH)<2> and a carbon nano-tube net doped therein; and a shell is uniform and compact PPY formed through an electrochemical deposition method. The composite electrode exerts a double-electrode-layer effect by utilizing the carbon nano-tube net having high specific surface area; with the help of the pseudocapacitance characteristic of the nano metallic oxide Ni(OH)<2>, the specific capacity is increased; simultaneously, depending on the high electric conductivity and the high specific energy density of the polymeric conductive polymer PPY, the discharge capability of the super capacitors under a high rate can be improved; the carbon nano-tube net with a connection point in a composite pole piece is doped in Ni(OH)<2>; therefore, the electric conductivity and the liquid sucking and keeping capability of the material are easily improved; and furthermore, the structural stability of the material can be improved through a net type structure.

The invention belongs to the technical field of polyether polyol synthesis, and particularly relates to a preparation method of high-functionality polyether polyol, wherein the preparation method comprises the following steps: (1) by using a high-functionality initiator or a mixed initiator containing the high-functionality initiator as an initiator, adding alkylene oxide under the action of a catalyst, and carrying out a polymerization reaction to obtain oligomer polyether polyol; and (2) adding an initiator which is the same as the initiator in the step (1), a catalyst and alkylene oxide into the oligomer polyether polyol obtained in the step (1), and carrying out a polymerization reaction to obtain the high-functionality polyether polyol. According to the invention, a step-by-step secondary feeding mode is adopted, the high-viscosity initiator system is diluted to a certain extent, the olefin oxide addition reaction is easier to start, the problems of long initiation time and non-uniform polymerization are solved, the unsaturated value index of a polyether polyol product is lower, the actual hydroxyl value of the product is closer to the theoretical hydroxyl value, and the product can meet higher use requirements.

The invention discloses a preparation method of a lithium iron phosphate composite pole piece. The preparation method comprises the following steps: firstly dissolving lithium metal into liquid nitrogen to obtain a lithium sol solution, coating the lithium sol solution onto the surface of a spumy current collector, after pressing and high temperature treatment, coating a lithium iron phosphate sizing agent on the surface, and after drying, carrying out vapor deposition on the surface to obtain a graphene layer so as to obtain the positive composite pole piece. The preparation method is simplein process, high in efficiency and easy to control, solves the defects existing in a conventional pole piece coating technology, and is low in cost and excellent in effect. According to the obtained lithium iron phosphate composite pole piece, lithium supplementation is carried out on active substances through pre-lithiation of the current collector, so that the gram volume development and rate performance of a lithium iron phosphate battery can be improved, meanwhile, the cycle performance of the lithium ion battery is improved by using the characteristics that the electric conductivity of external graphene is high and the compatibility with an electrolyte is excellent.

The invention provides an aldol condensation catalyst, a preparation method and a method for preparing methyl methacrylate by using the aldol condensation catalyst. The catalyst comprises a modified silicon dioxide carrier and alkali metal elements loaded on the carrier, the modified silicon dioxide carrier is of a foam porous structure and has a first range composed of macropores with the diameter ranging from 10-1000 micrometers and a second range composed of submicron pores with the diameter ranging from 2-500 nanometers; any thickest part of the carrier is less than 1mm; the loading capacity of alkali metal on the catalyst is 4-9wt% (based on alkali metal elements), and the loading capacity of free alkali metal is less than 0.5 wt%; and the total loading capacity of the modifier is 0.5-3wt% (based on modifier elements). The catalyst provided by the invention has excellent water resistance, carbon deposition resistance and long-period activity stability, and is suitable for industrial application of methyl methacrylate prepared by aldol condensation of methyl propionate and formaldehyde.

The invention relates to a preparation method for a hydrophobic alcohol metal compound and application of the same to preparation of isosorbide-modified polyester. According to the invention, a dihydric alcohol mixture of dibasic acid and isosorbide is used as a monomer and the hydrophobic alcohol metal compound is used as a catalyst for preparation of the modified polyester under mild conditions.According to the preparation method for the isosorbide-modified polyester, the used catalyst is low in usage amount and stable in performance, and can effectively reduce esterification time, lower polycondensation temperature, decrease the loss of raw materials and reduce the probability of occurrence of side reactions of a system.

The invention relates to a culture method of wettability T cells. The culture method comprises the following steps of (1) preparing and forming effector T cells; (2) using a differentiation culture medium, so that the effector T cells can be subjected to differentiation to TIL-TCM; and (3) amplifying TCM with an amplification culture medium. The cultured TIL-TCM has high tumor tropism, and can home to the position of tumors. Tumor cells can be specifically recognized, and tumors can be specifically killed. The culture method can be adaptive to microenvironment of tumors, can live in bodies fora long time, and can achieve the antitumor effect for a long term. A small quantity of the cells can achieve high antitumor effect, and the cells are short in culture time, low in probability of sideeffects, simple to operate and high in cell proliferation speed.

The invention discloses a face cream capable of removing spots and a preparation method of the face cream. The face cream is prepared from the following raw materials in parts by weight: 3-6 parts ofcetanol, 2-4 parts of glycerin monostearate, 1-3 parts of sodium alginate, 4-8 parts of glycerinum, 2-5 parts of polysorbate, 2-5 parts of propanediol, 1-3 parts of triethanolamine, 3-6 parts of composite Chinese herbal medicinal ingredient and 65-85 parts of deionized water. The pH value of the face cream is 7.5-8.0. The composite Chinese herbal medicinal ingredient has the advantages of synergistic interaction, good permeability, easiness in absorption and the like. Metabolism of melanin is accelerated while melanin formation in skin cells is inhibited effectively, and therefore, the spots can rapidly face away or disappear; and the face cream is gentle in effect, is good in spot removing effect, and does not have toxic or side effects.

The invention provides a preparation method of a composite photocatalyst, the composite photocatalyst and a degradation method of dye wastewater, and belongs to the field of water pollution treatment. The preparation method of the composite photocatalyst comprises the following steps: mixing butyl titanate, hydrochloric acid and graphite in an ethanol solution, carrying out ultrasonic treatment to obtain gel, drying the gel, grinding into powder, and calcining to obtain graphite-TiO2; and then dispersing the graphite-TiO2 nanoparticles in a mixed solution containing Fe3O4, adding NaOH and polyethylene glycol, and carrying out a reaction to obtain the composite photocatalyst graphite-TiO2@Fe3O4. The composite photocatalyst is high in catalytic activity and high in recovery rate. The composite photocatalyst graphite-TiO2@Fe3O4 and persulfate are synergistically applied to degradation of dye wastewater, and by means of the method, the degradation rate of azo dyes such as alizarin red which are difficult to degrade can reach 90% or above.

The invention discloses a porcine circovirus, porcine pseudorabies virus and mycoplasma triple inactivated vaccine which comprises an antigen and a vaccine adjuvant, the antigen is composed of a porcine circovirus type 2 antigen, a porcine pseudorabies virus antigen and a mycoplasma antigen, the porcine circovirus type 2 antigen is a purified, concentrated and inactivated porcine circovirus type 2 protein antigen solution, and the content of Cap protein is more than or equal to 160 [mu]g/ml; the porcine pseudorabies virus antigen is a purified, concentrated and inactivated porcine pseudorabies virus protein antigen solution, and the content of the Cap protein is more than or equal to 160 [mu]g/ml; the mycoplasma antigen is an inactivated mycoplasma protein antigen solution, and the content of the Cap protein is more than or equal to 160 [mu]g/ml; and the vaccine adjuvant is composed of a water-based high-molecular polymer adjuvant and a composite polysaccharide immunopotentiator. Foreign protein is removed through clarification filtration and ultrafiltration concentration, and the side reaction probability of the vaccine is greatly reduced; and three-proofing can be achieved through one needle, so that the number of immunization times and stress are reduced. The method is economical and practical, the immunization procedure is simplified, and the epidemic prevention cost is reduced.

The invention provides a lithium ion battery cathode material and a preparation method thereof and a lithium ion battery. The cathode material is of a core-shell structure, the core is graphite, and the shell is of a two-layer structure which sequentially comprises an inorganic lithium layer and an organic lithium composite layer from inside to outside. The preparation process of the cathode material comprises the steps that 1, the graphite and an inorganic lithium composite liquid are mixed to be uniform, after the pH value is regulated, heating is conducted to remove an organic dispersing agent and solvent, and grinding is conducted to obtain a solid product A, wherein the inorganic lithium composite liquid is prepared from inorganic lithium, the organic dispersing agent, an adhesive, graphene and the solvent; 2, the solid product A and organic lithium composite liquid are mixed to be uniform, drying and carbonizing are conducted sequentially, a product is cooled to room temperature, and then the cathode material is obtained, wherein the organic lithium composite liquid is prepared from organic lithium, a dispersing agent, an adhesive, carbon nanotubes and solvent. According to the cathode material, the transmission rate of lithium ions is effectively increased, the electron conductivity of the lithium ions is effectively improved, quick charging and discharging are well achieved, and finally the rate performance, safety performance and cycle performance of the battery are improved.

The "DEVICE FOR SANITIZING THE AIR-CONDITIONING SYSTEM OF VEHICLES USING RADIANT CATALYTIC IONIZATION" relates to a device (1) mounted on a casing (2) that includes a UVX lamp (3) surrounded by a metal alloy (4) that converts the air/oxygen (A) into a purifying plasma (P) comprising hydroxyl radicals and hydrogen peroxide.