58results about How to "Shorten reaction time" patented technology

A microfluidic flow cell for removably interfacing with a removable-member for performing a reaction therebetween. The microfluidic flow cell device comprises at least one reaction portion defining with the removable-member a reaction chamber when in an interfaced position thereof. The microfluidic flow cell comprises at least one fluid-receiving portion for receiving a fluid therein and being in fluid communication with the reaction chamber. When the microfluidic flow cell and the removable-member are in the interfaced position, the cell is adapted to allow for the fluid in the fluid-receiving portion to flow to the reaction chamber. Devices, systems and methods comprising this microfluidic flow cell are also disclosed.

This invention relates to methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. The invention provides a microsystem platform and a micromanipulation device for manipulating the platform that utilizes the centripetal force resulting from rotation of the platform to motivate fluid movement through microchannels. These assays may be performed for a variety of purposes, including but not limited to screening of drug candidate compounds, life sciences research, and clinical and molecular diagnostics. Methods specific for the apparatus of the invention for performing any of a wide variety of microanalytical or microsynthetic processes are provided.

A fluid handling apparatus 10 has a plurality of fluid handling subassemblies 16 arrayed on a plate body 12. Each of the fluid handling subassemblies includes: an injecting section 26 for injecting a fluid; a fluidized section 28 for allowing the fluid to continuously flow downwards; a fluid housing chamber 30 for receiving the fluid from the fluidized section; a wall portion 20 formed between the fluid housing chamber and the fluidized section; slits 20b for allowing the fluid to enter the fluid housing chamber; and a surface-area increasing means 22 for increasing the area of a contact surface with the fluid in the fluidized section. The slits extend from a lower end positioned in the vicinity of the lower end of the fluidized section, to an upper end higher than the upper end of the fluidized section, for allowing the injecting section and fluidized section to be communicated with the fluid housing chamber.

The invention discloses a microwave-assisted method of a nickel molybdate graphene composite material used for a capacitor. An anode composite material of a NiMoO4-rGO capacitor is prepared by taking NiCl2.6H2O as a nickel source, (NH4)6Mo7O24.4H2O as a molybdenum source and graphite oxide as a carrier through microwave reflow assisting. The composite material effectively combines NiMoO4 with graphene, graphite oxide is reduced to be graphene through high-temperature reflow, urea serving as a nitrogen source provides rich nitrogen doping sites, and NiMoO4 is effectively adhered on the surface of graphene, so that specific capacitance of a compound is improved, electroconductivity of the compound is improved, and the microwave-assisted method has the advantages of simple operation, low cost, long circulating life, safety, zero pollution, high efficiency and the like. The microwave-assisted method is of great significance in solving the problem of energy resources and promoting application and development of super-capacitor materials.

Data packets are forwarded in the network nodes of the communication network by a multipath routing method and multiprotocol label switching in at least one part of this communication network.

A method of catalysts reduction using non-thermal plasma according to the present invention is characterized to reduce catalysts containing metal compounds by bringing them into contact with hydrogen-containing gas under a non-thermal plasma state. In the method of catalysts reduction using non-thermal plasma according to the present invention, said non-thermal plasma is generated by dielectric barrier discharge. In the method of catalysts reduction using non-thermal plasma according to the present invention, the plasma energy that is required to vary depending on the types of metals is regulated by the magnitude of power via voltage regulation. In the method of catalysts reduction using non-thermal plasma according to the present invention, said reduction method is conducted in conjunction with existing methods of gaseous hydrogen reduction by heating, electrochemical reduction methods, or methods of reduction by adding organic or inorganic reducing agents.

The invention discloses a cross cobalto-cobaltic oxide nanosheet array, a gas sensor containing the array and application thereof. The nanosheets in the special cross cobalto-cobaltic oxide nanosheet array cross with each other. The nanosheets have a mesoporous structure, and the highest sensitivity of 16.5 for selective detection of acetone at about 111 DEG C. The cross cobalto-cobaltic oxide nanosheet array overcomes the problem that traditional cobalto-cobaltic oxide nanosheet cannot directly generate array on an insulation substrate with only supporting effect, and has the advantages of low production cost, high efficiency, and simple and controllable operation. The cross cobalto-cobaltic oxide nanosheet array has open structure, large specific surface area and electron mobility, and can provide more space for the benefit of rapid adsorption and detachment of gas molecules, and significantly improve the gas sensitive properties of the material. The cross cobalto-cobaltic oxide nanosheet array has good stability; test is carried out every 3 days in 60 days; and after 20 times of test, the performance change rate is only +/- 8%. The invention is quite applicable to sensor, acetone detection and medical detection.

The invention discloses a preparation method of N-alkyl conjugated ion type quaternary ammonium salt. Dialkylamine, bis(trichloromethyl)carbonate and tetramethyl guanidine are used as raw materials which are subjected to carbonylation, chlorination, condensation and neutralization reactions to synthesize an alkyl quaternary ammonium salt phase transfer catalyst, namely the N-alkyl conjugated ion type quaternary ammonium salt. In the process, since the bis(trichloromethyl)carbonate replaces highly-toxic phosgene, the safety and environmental protection hidden danger in catalyst synthesis are greatly reduced from the source, and the problem that phosgene is hard to accurately quantify in a reaction process is effectively solved; the reaction product alkyl quaternary ammonium salt is directly crystallized in toluene and separated out, has the purity of as high as 99%, and can be applied to a halogen exchange reaction. The reaction conditions of the process are mild, the process is safe and environment-friendly, the yield is high, the cost is low, and the activity of a finished product of the catalyst is good.

The invention relates to the technical field of aluminium-plastic panels, in particular to a fireproof aluminium-plastic panel containing a nanometer flame retardant and a core material special for the fireproof aluminium-plastic panel containing the nanometer flame retardant. The core material comprises the following raw materials in parts by weight: 45-55 parts of polyethylene, 25-30 parts of polycarbonate, 15-18 parts of modified enhanced nylon, 2-3 parts of the nanometer flame retardant, 1.5-2.5 parts of modified nanometer cerium oxide, 2-6 parts of a synergist, 3-8 parts of a compatilizerand 1-2 parts of a lubricant. The core material has excellent flame-retardant and fireproof performance, the mobility is high, a core layer can be easily produced through extrusion molding and injection molding, and the core layer produced by using the core material is high in strength and excellent in hardness, resists bending, is not liable to deform, and is excellent in weather resistance; andby adopting the nanometer flame retardant, through combined action of the nanometer flame retardant and the synergist, the core material can have the excellent flame retardant and fireproof performance, and not only can the synergist have an flame-retardant effect, but also a powder state of the synergist can promote the dispersity of materials, so that the rheological property of the core material in the subsequent technologies is improved.

A method for producing a polyester is provided, the method comprising the step of reacting an acylated product of a compound having at least one phenolic hydroxyl group with an aromatic carboxylic acid under microwave irradiation. Polyester can be produced by the method in a relatively short period of time at high temperature with a suppressed thermal hysteresis.

It is intended to provide a novel method for improving an enzyme hydrolyzing an a-1,6-glycosidic linkage. A mutated enzyme is designed by specifying one or more amino acids selected from the group shown below in an amino acid sequence of an enzyme (an enzyme to be mutated) that hydrolyzes an a-1,6-glycosidic linkage, that is, the group consisting of an amino acid corresponding to an amino acid at the 292 position, an amino acid corresponding to an amino acid at the 371 position, an amino acid corresponding to an amino acid at the 406 position, an amino acid corresponding to an amino acid at the 407 position, an amino acid corresponding to an amino acid at the 437 position, an amino acid corresponding to an amino acid at the 465 position, an amino acid corresponding to an amino acid at the 475 position, an amino acid corresponding to an amino acid at the 476 position; an amino acid corresponding to an amino acid at the 525 position, an amino acid corresponding to an amino acid at the 526 position, an amino acid corresponding to an amino acid at the 580 position and an amino acid corresponding to an amino acid at the 582 position of the amino acid represented by in SEQ ID NO: 2 (step (1)) and constructing an amino acid sequence in which the amino acid(s) specified in the step (1) is/are substituted with another amino acid or deleted based on the amino acid sequence of the enzyme to be mutated (step (2)).

A fluid handling apparatus 10 has a plurality of fluid handling subassemblies 16, each of which is mounted in a corresponding one of mounting recessed portions 14 of a plate body 12. Each of the fluid handling subassemblies 16 includes: an injecting section 26 for injecting a fluid; a fluidized section 28 for receiving the fluid from the injecting section 26 to allow the fluid to continuously flow downwards; a fluid housing chamber 30 for receiving the fluid from the fluidized section 28; a wall portion 20 formed so as to extend in substantially vertical directions between the fluid housing chamber 30 and the fluidized section 28; an opening 20a for allowing the fluid in the fluidized section 28 to enter the fluid housing chamber 30; and a surface-area increasing means (22, 32, 34) for increasing the area of a contact surface with the fluid in the fluidized section 28.

The invention relates to a drive circuit applying in a piezoelectric actuating component composed of a drive period generation unit and a switch circuit unit. The drive period generation unit also comprises a drive indexing signal and a programmed microcontroller, wherein the programmed microcontroller generates a programmed drive period signal corresponding to the drive indexing signal after receiving the drive indexing signal and responding to the drive indexing signal. The switch circuit unit generates an alternate drive voltage corresponding to the drive period signal after connecting to the drive period generation unit and the piezoelectric actuating component as well as receiving the drive period signal. The waveform of the half wave leading edge of the alternate drive voltage has a gravity curve shape, the waveform of the half wave trailing edge of the alternate drive voltage is close to a vertical shape and the alternate drive voltage is connected to the piezoelectric actuating component.

The invention discloses a fur tanning agent based on isocyanate and a preparation method of the fur tanning agent. According to the process, diisocyanate molecules are adopted to perform end-capping on two ends of fat-diol or polyether glycols in a mixed solution under the condition of catalysis, and prepolymer with high selectivity and high conversion rate is obtained; then, hydrosulphite is adopted to protect isocyanate groups on two ends of the prepolymer, the water solubility of the compound is increased, and the tanning agent is obtained finally. The molecular weight of the tanning agent can be controlled, thereby being applicable to tanning of furs with different fibrous textures; during the tanning process, the fur tanning agent can effectively permeate to the position among the fur collagen; hydrosulphite decomposes under the condition of raised temperature and raised alkali, the tanning agent molecule expose the isocyanate group to cause the isocyanate group to react with the amino group on the collagen molecule, crosslinking of the fur collagen is realized, and the purpose of tanning is achieved; only neutral salt is released during the entire process, heavy metal ions or free aldehyde groups are not generated, the process is simplified, the fur tanning agent is environment friendly, the price is low, the fur tanning agent is very suitable for fur, especially tanning of rabbit fur with light color.

The invention discloses a one-pot method for preparing 2, 3, 4, 5-trifluoro-3-methoxybenzoic acid. The method comprises the step of obtaining 4-hydroxysalt-3, 5, 6-trifluorophthalate, and the step comprises: by taking a metal halide as a catalyst, putting N-methyl tetrafluorophthalimide into an alkaline environment, and carrying out hydrolysis defluorination and hydroxylation reaction to obtain the 4-hydroxy-3, 5, 6-trifluorophthalate. The raw material cost is low, the process route is short, and only about 8-10 hours are consumed for synthesizing the 4-hydroxy-3, 5, 6-trifluorophthalate; andthe method has the advantages of reduction of the alkali use amount by 50% or above, few side reactions or no side reactions, realization of the total molar yield of the reaction reaching 85%, and realization of the product purity reaching 99.8% or above.

The invention relates to the technical field of copper waste liquid electrolysis recovery devices, in particular to an electrolysis recovery device for copper-containing waste liquid of a printed circuit board. The electrolysis recovery device comprises a pretreatment unit and an electrolysis unit, wherein the pretreatment unit comprise a header tank, a blow-off pipe and a chemical adding pipe, aheating plate and stirring blades are installed at the bottom of the header tank, the blow-off pipe is connected with the header tank in a penetrating manner, the chemical adding pipe is installed atthe top of the header tank, a nanofiltration membrane is arranged between a concentration cavity and a circulating cavity, the electrolysis unit comprises a tubular electrolytic cell and a power supply, a base is arranged in the tubular electrolytic cell and used for placing an anode metal bar and a cathode metal bar, and the anode metal bar and the cathode metal bar are electrically connected with the power supply to form a closed loop. According to the electrolysis recovery device for the copper-containing waste liquid of the printed circuit board, the problems of lower recovery rate, shortcontact time and low replacement efficiency of the copper-containing waste liquid of the printed circuit board in the prior art are solved, and an electrolysis recovery device has the advantages of high electrolysis efficiency, high recycling material utilization rate and high replacement efficiency.

The invention discloses a synthesis method of 2, 4, 5-trifluoro-3-methoxybenzoyl chloride. The method comprises the following steps of: (1) using a metal halide as a catalyst, putting N-methyltetrafluorophthalimide in an alkaline environment, and carrying out hydroxylation reaction to obtain a sodium salt of 4-hydroxy-3, 5, 6-trifluorophthalic acid; (2) adding acid into the reaction system, and carrying out decarboxylation reaction to obtain 2, 4, 5-trifluoro-3-hydroxybenzoic acid; (3) sequentially adding a methylation reagent and acid into the reaction system under an alkaline condition, andcarrying out methylation reaction and acidification reaction to obtain 2, 4, 5-trifluoro-3-methoxybenzoic acid; and (4) mixing the 2, 4, 5-trifluoro-3-methoxybenzoic acid with thionyl chloride, and carrying out acylation reaction so as to obtain the 2, 4, 5-trifluoro-3-methoxybenzoyl chloride. The synthesis method disclosed by the invention is short in route, small in alkali dosage and few in sidereaction, the total molar yield of the reaction reaches 82.5%, and the purity of the product reaches 99.6% or above.

The invention provides a method for continuously synthesizing perchloromethyl mercaptan. Liquid chlorine, carbon disulfide and a hydrochloric acid solution are adopted as raw materials and react in the continuous flow reactor under certain temperature and pressure conditions through a full-liquid-phase reaction among the materials, so that the reaction efficiency is greatly improved; meanwhile, back mixing can be effectively avoided by adopting continuous flow reaction, further reaction of total chlorine, chlorine and other byproducts is reduced, and the reaction selectivity is improved. Besides, compared with the prior art, the method has the advantages that the liquid chlorine gasification procedure is omitted, so that the problem of dissolution heat release during chlorine reaction isavoided, the total heat release in the reaction process is reduced, and the production energy consumption is reduced; moreover, high-toxicity chlorine and extremely flammable carbon disulfide need tobe used for synthesizing total chlorine, while the continuous reactor is used in the invention, so that the material amount in a reaction system can be greatly reduced, the reaction safety and controllability are improved, and the harm to the health of workers or other dangers caused by running, emitting, dripping, leaking and the like can be effectively avoided.

The present invention relates to the technical field of peroxide decomposition, and discloses a method for preparing phenol, which comprises the following steps: (1) mixing cumene hydroperoxide and liquid acid or solid acid with a solvent to form a homogeneous solution or uniformly dispersed system; (2) loading the homogeneous solution or uniformly dispersed system of cumene hydroperoxide with a homogeneous solution or uniformly dispersed system of acid into a preheating module and preheating in a micro-channel continuous flow mode, preliminarily mixing the preheated materials for reaction in a mixing module in a micro-channel continuous flow mode, and then further mixing the materials for reaction in a series of mixing and reaction module groups in a micro-channel continuous flow mode, to obtain phenol. The method provided in the present invention is easy, simple and safe to operate, can implement continuous production of phenol product at a high yield ratio; in addition, since the reaction in the present invention is a cracking reaction, which releases heat strongly, the safety factor of the process is significantly improved owing to the strong heat release characteristic in conjunction with the unique heat transfer property of the micro-channels. With the method provided in the present invention, the yield of the product is higher than 99%.

The invention relates to a chemical wastewater biochemical treatment system which comprises a pretreatment unit, a filtration biochemical unit, an oxidation unit and a disinfection unit, the oxidation unit comprises an oxidation chamber, a water inlet pipeline, a water outlet pipeline, a gas-liquid mixing channel, a temperature detection device, a constant temperature device, a liquid level detection device, an air pressure adjusting device and a central control device. The device has the beneficial effects that the central control device can determine the opening degree of the first opening degree valve and the opening degree of the second opening degree valve according to the COD value in the to-be-oxidized wastewater, and the opening degree of the first opening degree valve is adjusted according to the liquid level height of the to-be-oxidized wastewater; the central control device is provided with an oxidation reaction time length, after the oxidation time length reaches the standard, the residual COD value in the wastewater is detected, and the central control device can determine the oxidation compensation time length according to the residual COD value. The oxidation reaction time in the wastewater treatment process is shortened, and the reaction duration is shortened.

The invention relates to a straw smashing and rod making device for anaerobic fermentation biogas production. The straw smashing and rod making device for anaerobic fermentation biogas production is characterized by comprising an auger spindle (8), wherein the auger spindle (8) is coaxially arranged in a cavity body (4) of the device and is provided with a spiral auger; the spiral auger is formedby two sections of spiral augers used as an extruding section and a smashing section and continuously arranged front and back; an auger end cutting knife (7) with a toothed cutting edge is arranged onan outer contour of the spiral auger used as the smashing section located at a feed inlet position of the cavity (4); the toothed cutting edge on the auger end cutting knife (7) is matched with a toothed cutting edge of an upper cutting knife (12) arranged at the feed inlet position of the cavity (4) in a shearing-meshing way; an outer contour of the spiral auger section used as the extruding section (5) is a smooth surface, and is in movable fit to the cavity body (4) and an inner cavity of a baffle ring (6); a rod making hole plate mold (3) is arranged on the front end of the cavity body ofthe equipment; a plurality of straw rod forming holes are formed in the rod making hole plate mold (3).

The invention discloses a titanium-zirconium adsorbent and a preparation method and application thereof, and belongs to the field of wastewater treatment and environmental functional materials, the preparation method comprises the following steps: S1, dissolving TiCl4 in an ethanol-concentrated hydrochloric acid mixed solution; s2, adding ZrOCl2.8H2O powder and water into the solution obtained in the step S1, stirring the mixture till the ZrOCl2.8H2O powder is dissolved to generate a zirconium-titanium ion solution, wherein the amount of ethanol in the ethanol-concentrated hydrochloric acid mixed solution is controlled, so that the conductivity of the zirconium-titanium ion solution is smaller than 60 mS/cm; s3, adding the pretreated resin into the zirconium-titanium ion solution in the step S2, and stirring the mixture to obtain a resin solution loaded with zirconium and titanium; s4, adding a precipitant and a transformation agent into the zirconium and titanium loaded resin solution, stirring and filtering the solution, and washing a solid to obtain the titanium zirconium adsorbent. According to the one-step method, the titanium and zirconium are simultaneously loaded in a resin pore channel by a method of adjusting the solution conductivity, so that the preparation steps are simplified, the reaction period is shortened, and the loading rate of titanium and zirconium bimetals is improved.

A method testing for blood antigens (known as forward blood grouping) is presented wherein known antibodies are attached to a solid surface and the red blood cell sample for immunological reaction is centrifuged to physically overcome the natural repellent force between two red cells (know in the industry as the zeta potential) and to allow for the antigen antibody reaction to occur more rapidly. A reverse blood grouping procedure utilizes synthetic or purified antigens, which are attached directly attached directly to a solid surface. The surface is then contacted with the patient's serum and then centrifuged to allow the antigen antibody reaction to occur. The cells are then washed and a second labeled antibody of known concentration is added as an indicator. This is a method of performing a major crossmatch that does not utilize anti-human immunoglobin. In an alternative major crossmatch procedure, a binder is used to attach red blood cell membranes from a blood donor and the serum from a recipient is allowed to undergo an immune reaction with these membranes on the solid surface. Antibody screening and antibody identification are carried out by attaching known antigen carrying cells to a solid surface. The solid surface is contacted with the unknown solution which will undergo an immune reaction to the extent that antibodies specific to the previously adhered antigens are present and will bind. Red blood cells or synthetic labeled particles are used as the indicator mechanism.