24 results about "Soxhlet extractor" patented technology

A system for plant-mediated synthesis and characterization of vanadium pentoxide (V2O5) nanoparticles, comprising a structurally integrated device configured to perform extraction, reaction, calcination and performance evaluation within a closed automated control loop, wherein the system includes: a basic chassis made of heat-insulated stainless steel, which houses a microcontroller-based central control unit; a bioextract preparation unit fluidically connected to a reactive mixing chamber, the bioextract preparation unit comprising a Soxhlet extractor with a borosilicate condenser, a thermostatically controlled heating jacket and a digital thermocouple to maintain extraction temperatures between 60°C and 70°C; a precursor feed vessel containing an ammonium metavanadate solution with a molarity between 0.1 M and 0.3 M, wherein this vessel is connected to the reaction mixing chamber via an electromagnetically actuated inlet valve and a precision peristaltic pump; a reaction mixing chamber with an inductive heating coil, a magnetic stirrer plate and a temperature and pH monitoring device configured to maintain a uniform reaction temperature of 70±2°C during the precursor-extract interaction; a calcination module consisting of a muffle furnace lined with refractory ceramic material and containing embedded nichrome heating elements controlled by a PID-controlled temperature controller to achieve a heating rate between 5 °C and 10 °C per minute up to a setpoint of 445±5 °C for combustion synthesis; an optical characterization module with integrated UV-VIS spectrometer, Fourier transform infrared analyzer and photoluminescence detector, each optically isolated and electronically connected to the control unit; and a photocatalytic and antibacterial test chamber fluidically connected to the output of the calcination module, the chamber comprising a UV irradiation array, an optical absorption sensor and a temperature-controlled bacterial incubation plate, the central control unit includes a programmable logic controller (PLC) configured to synchronize the operation of all submodules via feedback control loops, which receive data from temperature, pH and optical sensors, thereby automating the synthesis, analysis and testing of V2O5 nanoparticles.

This invention belongs to the technical field of qualitative determination of ephedra, licorice, and bitter almond in traditional Chinese medicine compound preparations. This invention discloses a method for simultaneously identifying ephedra, licorice, and bitter almond in Ma Xing Shi Gan oral liquid. The test sample is placed in a Soxhlet extractor and treated with reagents of different properties to prepare a fractional extraction solution. Ephedra and licorice reference materials are then processed to obtain a reference material solution. Amygdalin reference standard is prepared by adding methanol to prepare a reference solution. The above test sample solution, reference material solution, and reference solution are used in a thin-layer chromatography system to simultaneously identify ephedra, licorice, and bitter almond. The results show that the chromatographic spots are well separated and clear, with no interference from the negative control. This method has simple pretreatment, is environmentally friendly, has high sensitivity, and its repeatability and robustness meet the requirements of the Chinese Veterinary Pharmacopoeia, thus enabling better quality control of Ma Xing Shi Gan oral liquid.

A functionalized covalent organic framework material containing dimethylamino and its preparation method are disclosed. This invention relates to a C2-type aldehyde monomer containing a dimethylamino functional group and a functionalized covalent organic framework material containing dimethylamino and its preparation method. The purpose of this invention is to solve the problems of insufficient functionalized monomers, easy pore blockage leading to decreased specific surface area, and insufficient selectivity and pH responsiveness in existing COF materials used for the adsorption and separation of biomolecules such as peptides. The method includes: 1. Weighing; 2. Anhydrous and anaerobic reaction; 3. Filtration; 4. Column chromatography purification; 5. Drying; 6. Weighing; 7. Anhydrous and anaerobic reaction; 8. Washing; 9. Deep washing with a Soxhlet extractor; 10. Drying and grinding. The invention innovatively introduces a new monomer with a basic recognition site, and through a "bottom-up" strategy, directly and uniformly introduces the dimethylamino functional group into the COF framework. The material exhibits good crystallinity and a high specific surface area (up to 2481 m²). 2 ( / g), and has significant pH responsiveness.

An outlet of a first channel of a spherical condensation pipe extends into an extraction pipe, a heating sleeve is arranged outside the extraction pipe, a filter cartridge is detachably arranged in the extraction pipe, a cartridge opening of the filter cartridge is in a horn shape, the maximum caliber of the filter cartridge is the same as the inner diameter of the extraction pipe, and a connecting pipe is arranged on the side wall of the extraction pipe. The upper end of the connecting pipe is communicated with the upper end of the extraction pipe and positioned below the edge of the opening of the filter cartridge, the lower end of the connecting pipe is communicated with the lower end of the extraction pipe, an S-shaped return pipe communicated with the extraction pipe is arranged in the connecting pipe, the communicated part of the return pipe and the extraction pipe is positioned above the lower end of the connecting pipe, the opening of the return pipe faces downwards, and the lower port of the extraction pipe is positioned in the extraction bottle. According to the device, the problem of'drying period 'of a target extract in a traditional device is solved, the extraction efficiency is improved, the stability and the high efficiency of the extraction process are ensured, the problem of non-uniformity of sample infiltration is solved, and efficient separation and analysis of a complex sample are favorably realized.

The invention discloses a decoloring method of polyester cloth. The decoloring method comprises the following steps: preparing a Soxhlet extractor comprising a flask, an extraction tube, a siphon tube, a steam tube and a condensation tube; polyester cloth and a solvent are placed into an extraction tube and a flask respectively, the polyester cloth is dyed through dye, and the polyester cloth is in direct contact with the inner side wall of the extraction tube; the solvent in the flask is heated, so that the solvent is in a gaseous state, flows along the steam pipe to reach the condensation pipe, is in a liquid state after being in contact with the condensation pipe and flows back to the extraction pipe to be in contact with the polyester cloth until the liquid level of the solvent in the extraction pipe is higher than the highest position of the siphon. According to the decolorizing method, the decolorizing effects of high decolorizing rate and high whiteness can be achieved, so that the phenomenon that the dye residues cause cracking of the pelletized polyester at high temperature to generate substances harmful to human bodies or cause environmental pollution is avoided, and the recovered polyester can be dyed into other colors different from the color before decolorizing again.

The application discloses a metal covalent organic framework material, a mediated steady-state electrochemiluminescence sensor and application of the sensor in the field of Escherichia coli detection, wherein the preparation method of the metal covalent organic framework material is as follows: tris(4,4'-dicarboxylic acid-2,2'-bipyridyl) dichlororuthenium, 1,2,4,5-benzene tetraamine tetrahydrochloride and polyphosphoric acid are added into a polytetrafluoroethylene autoclave, heated at 150 DEG C for 24 hours, and then heated at 180 DEG C for another 24 hours to obtain a mixture; after the pH of the obtained mixture is adjusted to 8.5 by using a saturated NaHCO3 solution, black powder is precipitated, the black powder is collected by centrifugation, and the black powder is washed with water, methanol and acetone in sequence by using a Soxhlet extractor for 12 hours; the washed black powder is vacuum dried at 100 DEG C for 6 hours to obtain a ruthenium metal covalent organic framework material; the ruthenium metal covalent organic framework material is used as a signal source of an electrochemical sensor, and a PEG-CS modified interface is constructed on an electrode to enhance the antifouling performance of the sensor in a complex matrix; a molecular amplification method (polymerase chain reaction PCR and HCR) is adopted to fix a large amount of Ru-MCOFs materials on the surface of the electrode, so that a stable electrochemical sensor is developed and assembled, and the stable electrochemical sensor can be used for detecting common foodborne pathogenic bacteria.

This invention relates to a method for recovering anthraquinones from spent activated alumina using a Soxhlet extractor. The method first involves adding a solvent or mixed solvent to a reactor, then adding dried spent activated alumina to the Soxhlet extractor, which is then installed on the reactor. Heating causes the solvent to vaporize, rise, condense, and flow back into the reactor, repeating this cycle. After the experiment, the extract is rotary evaporated under reduced pressure until no more solvent is distilled off; the remaining solid is the product. This invention maximizes the recovery of anthraquinones and hydroanthraquinones. Furthermore, ethanol and cyclohexane have lower boiling points than the working solvents, resulting in lower energy consumption and a more environmentally friendly approach.

The invention discloses a sludge-based amino acid / phosphoric acid modified copper oxide and a preparation method and application thereof, and relates to the technical field of electro-catalysis, solid waste recycling and carbon neutralizer.The preparation method comprises the following steps that 1, sludge-based phosphoric acid and sludge-based copper oxide are subjected to a hydrothermal reaction, filtering and drying, and the sludge-based phosphoric acid modified copper oxide is obtained; and (2) under the action of a cross-linking agent and a surfactant, carrying out hydrothermal reaction on the sludge-based phosphoric acid modified copper oxide and sludge-based amino acid, filtering, extracting by using a Soxhlet extractor, and drying to obtain the sludge-based amino acid / phosphoric acid modified copper oxide. According to the sludge-based amino acid / phosphoric acid modified copper oxide, the activity of the low-concentration CO2 electrocatalytic reduction reaction in industrial flue gas can be remarkably improved, the competitive oxygen reduction reaction is inhibited, and the application potential of the CO2 electrocatalytic reduction technology in the industrial field is improved.

The invention provides a method for efficiently extracting solanesol in waste and inferior tobacco leaves, which comprises the following steps of: 1, sufficiently grinding and mixing the crushed waste and inferior tobacco leaves and an organic porous polymer modified by alkaline ionic liquid to obtain a mixture; 2, the mixture is poured into an organic solvent and heated, solanesol ester is subjected to a hydrolysis reaction, after the reaction is finished, the organic solvent is removed through slow volatilization, and a solid mixture is obtained; and 3, putting the obtained solid mixture into a Soxhlet extractor, carrying out reflux extraction by using a low-boiling-point non-polar solvent, and removing the organic solvent from the extracting solution under reduced pressure to obtain the solanesol extract. According to the method, the solanesol ester is efficiently hydrolyzed and the solanesol in plants is enriched by using the alkaline ionic liquid organic porous polymer, so that the use of conventional micromolecular inorganic alkali is avoided, convenience is provided for subsequent separation, the extraction rate of the solanesol reaches 90% or above, and the content of the solanesol in the extract is 50% or above.

The application discloses a preparation method of a magnetic oil-absorbing resin based on a high internal phase emulsion template. First, a certain amount of magnetic nanoparticles, an initiator and a surfactant are added into a solution containing monomers, a crosslinking agent and a pore-forming agent, and after being uniformly mixed, an oil phase is obtained; then, under mechanical stirring, a calcium chloride aqueous solution is slowly added into the oil phase to obtain a water-in-oil high internal phase emulsion; then, a polymerization reaction is carried out at 70 DEG C for about 24 hours; after being extracted by anhydrous ethanol by means of a Soxhlet extractor and vacuum dried, the magnetic oil-absorbing resin is obtained. By adjusting the content of the magnetic nanoparticles, the pore structure and oil-absorbing performance of the magnetic oil-absorbing resin are optimized, and a series of magnetic oil-absorbing resins are prepared, which exhibit good oil-absorbing performance, magnetic response and recycling performance.

The application relates to a thioureido aromatic porous organic polymer and a preparation method and application thereof, and belongs to the technical field of functional polymer adsorption materials. The preparation method comprises the following steps: dissolving a plurality of ternary aromatic amine monomers with different electron-donating effects and cheap binary isothiocyanate monomers respectively, mixing and shaking, reacting to obtain a porous organic polymer network, and performing organic gel display; grinding the organic gel into powder, performing solvent exchange in dichloromethane, treating in methanol by using a Soxhlet extractor, and finally drying to obtain the product. The thioureido aromatic porous organic polymer provided by the application has good adsorption selectivity to Au, high adsorption capacity, a wide pH range, good cyclic adsorption performance, a simple preparation method, and high practical application value.

The invention discloses an asphalt detection device based on Soxhlet extraction and speed control chromatography. The asphalt detection device comprises a Soxhlet extraction system and a multi-channel stepless speed control chromatography system, the Soxhlet extraction system comprises a conical flask, a Soxhlet extractor, a snakelike condensation pipe and a heating jacket; the lower end of the Soxhlet extractor is connected with a conical flask, the upper end of the Soxhlet extractor is connected with a snake-shaped condensation pipe, and the conical flask is arranged in the heating sleeve; a vacuum pump connector is formed in the top of the S-shaped condensation pipe and connected with an external vacuum pump. The multi-channel stepless speed control chromatography system comprises four chromatography columns which are connected in parallel and an air peristaltic pump, and the air peristaltic pump is connected with the four chromatography columns respectively; an electromagnetic switching valve and an ultraviolet-visible spectrum detector are arranged at the bottom of each chromatographic column; and a conical flask is arranged below each chromatographic column. By improving the permeation efficiency of the solvent, accurate control of the chromatography flow rate and synchronous detection of multiple channels are realized.

The utility model discloses a kind of ultrasonic wave reinforced composite soxhlet extractor rapid organic matter extraction device, the distillation flask top of the device is equipped with extraction bottle, condenser is installed in extraction bottle top, extraction bottle and connecting pipe both sides are equipped with coupling pipe and siphon, extraction bottle middle section is rectangle and is equipped with fluorescence scanner in one side, extraction bottle inner chamber is equipped with support plate, support plate top surface is equipped with ultrasonic generator and sample extraction package in proper order, filter plate is equipped in extraction bottle inner wall above sample extraction package, filter plate includes center plate and edge plate, edge plate bottom surface is equipped with the first and second cleaning block of symmetrical arrangement, first and second cleaning block side is equipped with filter cloth, the tail end is connected with the side surface of center plate, center plate top surface is equipped with the waterproof drive motor of two output ends, waterproof drive motor is connected with the tail end of traction cable of second cleaning block by the roller shaft of output end and winding connection. The device reduces the possibility of impurities mixed in soxhlet extractor distillation finished product, improves organic matter extraction quality.

The invention relates to a method for enriching rare and noble metals in hot filter residues, which comprises the following steps of: cooling the hot filter residues after production of sulfur to room temperature, crushing and then grinding; then putting the ground hot filter residues into a Soxhlet extractor, carrying out distillation elution by taking carbon disulfide as an eluent until the mass of the hot filter residues is not changed, and filtering to respectively obtain eluted hot filter residues and sulfur-containing filtrate; the eluted hot filter residues are dried to obtain enriched rare and noble metal filter residues; the sulfur-containing filtrate is evaporated to obtain a superior sulfur solid, and evaporated carbon disulfide is condensed and then flows back to the Soxhlet extractor. The process is simple, the obtained rare and precious metal concentrate is high in quality and recovery rate, and the enriched rare and precious metal concentrate can directly enter a rare and precious metal production line.

The utility model discloses a device for measuring moisture regain and oil content of a fiber core of a steel wire rope. The device comprises a box body, a base, a sample weighing box, a controller, a heating seat A, a distilling device, a condensing device, a heating seat B, a Soxhlet extractor, a drying machine and a cooling machine, the box body is fixed on the base, the top of the box body is fixedly provided with a sample weighing box, the inner wall of the box body is fixedly provided with a controller, the base is fixedly provided with a heating seat A and a heating seat B, a distillation device is fixed above the heating seat A, a Soxhlet extractor is fixed above the heating seat B, and the heating seat A and the heating seat B are fixed on the box body. The controller is electrically connected with the sample weighing box, the heating seat A, the condensing device and the heating seat B; the controller is electrically connected with the heating seat A, the heating seat B, the condensing device and the like, the working states of the heating seat A and the heating seat B are controlled by the controller, and results are output to the control display, so that the moisture regain and the oil content are measured respectively.

The application discloses a preparation method of a magnetic particle doped coal pitch based porous carbon wave absorbing material, and belongs to the technical field of electromagnetic wave absorption. The preparation method of the magnetic particle doped coal pitch based porous carbon wave absorbing material comprises the following steps: dissolving coal pitch in a crosslinking agent under an inert gas atmosphere, then adding a catalyst, reacting to obtain a precipitate, extracting the precipitate in a soxhlet extractor after washing, and performing vacuum drying on the obtained powder to obtain a coal pitch based hypercrosslinked polymer; dissolving the coal pitch based hypercrosslinked polymer, nickel nitrate hexahydrate and urea in anhydrous ethanol to obtain a mixed solution, then performing refluxing, cooling, washing and precipitating, vacuum drying the obtained powder, and then placing the powder in a tube furnace to perform heating; and thus, the magnetic carbon based composite wave absorbing material with a three-dimensional porous structure is efficiently prepared by using a simple refluxing process.

The invention relates to the field of biological material extraction and preparation processes, and discloses a method for extracting a melanin-chitin compound from mussel shells, which comprises the following steps: carrying out acidolysis and hot acid reflux deproteinization on mussel shells, and degreasing with petroleum ether in a Soxhlet extractor to obtain the melanin-chitin compound. According to the method, the melanin-chitin compound is extracted from the mussel shells for the first time by utilizing the method which is mild in condition and simple in process, the problem of pollution caused by discarding of a large number of mussel shells is solved, the yield of the melanin-chitin compound can be increased, and the melanin-chitin compound is purely natural and has great application potential; and a technical basis is provided for subsequent application of the compound.

The condensate water saving device comprises a water tank and a water pump, condensate water needed by Soxhlet extraction method cooling is contained in the water tank, a water supplementing pipe connector is arranged at the top of the water tank and connected with a condensate water source through a water supplementing pipe, and the water supplementing pipe connector is connected with the water pump. The water pump is fixedly arranged on the water tank, a water outlet of the water pump serves as a condensate water inlet connector and is connected with a condensate water inlet of the Soxhlet extractor through a condensation pipe, a condensation pipe water return connector is further arranged at the top of the water tank, and the condensation pipe water return connector is connected with a condensate water outlet of the Soxhlet extractor through the condensation pipe. According to the utility model, the traditional test method is optimized, the recycling of condensate water is realized, the water resource is effectively saved, the requirement that a plurality of groups of Soxhlet extractors are tested at the same time can be met, the test efficiency is greatly improved, and the purposes of reducing the cost and improving the efficiency are achieved on the premise of meeting the standard requirements.

The invention discloses a composite material as well as a preparation method and application thereof. The preparation method of the composite material comprises the following steps: 1) placing carbon fibers in a Soxhlet extractor, adding an organic reagent, and carrying out heating reflux to obtain hydrophilic carbon fibers; 2) adding anhydrous rare earth acetate and hydrophilic carbon fibers into water to obtain a solution A; adding rare earth chloride salt into water to obtain a solution B; adding hydroxy carboxylic acid into water to obtain a solution C; mixing the solution A with the solution B to obtain a solution D; adding the solution C into the solution D to obtain sol; heating the sol to obtain rare earth modified carbon fibers; (3) heating epoxy resin, adding the rare earth modified carbon fiber and the curing agent I, and then adding the curing agent II to obtain a composite material precursor, and (4) heating and curing the composite material precursor at 60-120 DEG C to obtain the composite material.

This invention discloses a method for preparing biomass hard carbon anode materials without acid washing, comprising the following steps: using pure water as a solvent, placing biomass particles in a Soxhlet extractor, continuously circulating and extracting the biomass particles under reflux conditions for 2-5 hours; after extraction, removing the solid and drying it to obtain water-extracted purified biomass; heating the obtained water-extracted purified biomass to 300-550°C at a heating rate of 2-10°C / min, holding it at this temperature for 2-5 hours, then naturally cooling it to room temperature, and then washing and drying it with pure water; heating the obtained pre-oxidized carbonized product to 1100-1550°C at a heating rate of 2-10°C / min, holding it at this temperature for 3-6 hours, and then naturally cooling it to room temperature; washing the obtained carbonized product with pure water until the filtrate is neutral, and then drying it. Compared with the prior art, this method solves the problems of serious wastewater pollution, significant safety hazards, high costs, long production cycles, and the easy introduction of oxygen-containing defects that damage electrochemical performance.

The utility model provides a composite sealing assembly and a Soxhlet extractor, and relates to the field of Soxhlet extractors. The composite sealing assembly comprises a corrosion-resistant sealing piece and an inner-layer sealing piece. The corrosion-resistant sealing element is sleeved with the inner-layer sealing element, and the inner wall of the corrosion-resistant sealing element is attached to the outer wall of the inner-layer sealing element; the corrosion-resistant sealing piece is provided with an opening, and the opening extends in the length direction of the corrosion-resistant sealing piece. The inner-layer sealing piece is elastic. The composite sealing assembly solves the technical problems that in the prior art, a sealing structure of a Soxhlet extractor is complex in operation and cannot be matched with an automatic device.

The utility model discloses a loading auxiliary structure of Soxhlet extractor, relates to chemical experiment instrument technical field, including loading mechanism and elevating mechanism, the loading mechanism includes fixed plate, controller, loading pipe, storage bin, flow control valve and motor. An operator only needs to add materials into the storage bin, the motor drives the spiral conveying rod to start rotating work, the materials in the material storage bin are conveyed into the Soxhlet extractor through a material conveying pipeline composed of the spiral conveying rod and the feeding pipe, and the flow adjusting valve controls the flow of the materials according to the set opening degree. According to the feeding auxiliary structure of the Soxhlet extractor, materials can evenly and stably enter the Soxhlet extractor, the problems that in traditional manual feeding, the materials are prone to being scattered and placed unevenly are solved, the whole feeding auxiliary structure can adapt to the proper operation height through the lifting mechanism, an operator does not need to climb to a high position or raise objects with the help of the lifting mechanism, and the risk that the operator is injured due to unstable standing is reduced.

The invention belongs to the field of trichosanthes kirilowii maxim extraction, and particularly relates to a trichosanthes kirilowii maxim nutritional and healthy active substance extraction process which comprises the following steps: crushing a trichosanthes kirilowii maxim raw material into trichosanthes kirilowii maxim powder, and hammering the trichosanthes kirilowii maxim powder into a hammered material; and feeding the hammered material into megasonic auxiliary hot dipping extraction equipment for hot extraction. An existing Soxhlet extractor is improved, a specially-made metal reaction tube is adopted to replace an extraction bottle, and a hollow metal spiral tube is matched with a megasonic generator to apply megasonic vibration in a special frequency domain to a bent tube section of the metal reaction tube, so that the extraction rate of flavonoid compounds and terpenoid compounds of trichosanthes kirilowii maxim is remarkably increased; especially for trichosanthes kirilowii maxim roots and trichosanthes kirilowii maxim seeds which are difficult to extract, the lifting range is obvious, and the practicability is high.

The invention relates to the field of preparation of organic compounds, and discloses a preparation method of 2, 3, 7-trihydroxy-9-salicylfluorescein, which comprises the following steps: S1, preparing salicylfluorescein: mixing 1, 2, 4-triacetoxybenzene and an ethanol aqueous solution, adding sulfuric acid, adding salicylaldehyde, putting into a sodium nitrite aqueous solution, stirring, and reacting for 2-4 hours at the temperature of 50-60 DEG C to obtain salicylfluorescein; washing with pure water for three times, and filtering to obtain a crude product of the salicyl fluorescein; s2, purifying salicyl fluorescein: adding an ethanol aqueous solution and sulfuric acid into the crude salicyl fluorescein product obtained in S1, and heating until the solution is boiled to obtain salicyl fluorescein sulfate; filtering the solid in the Soxhlet extraction vessel to obtain a purified salicyl fluorescein product; and S3, drying in a drying oven: drying the purified salicyl fluorescein product obtained in S2 in the drying oven to obtain the salicyl fluorescein product. According to the method, side reaction impurities of the product are effectively reduced, so that the sensitivity of the product in analysis and detection application is improved, the use efficiency is improved, and the use range can be widened.