310 results about "Microwave assisted" patented technology

The invention relates to the field of caprolactam production, and discloses a green and efficient production process and device. The process comprises the following steps: continuously oximating cyclohexanone and hydroxylamine in a microreactor under the catalysis of mesoporous silica solid acid; carrying out gas phase rearrangement on cyclohexanone-oxime in the presence of a ZSM-5 molecular sieve under the assistance of microwaves; coupling, rectifying and purifying the crude product through a four-stage molecular sieve membrane; and performing catalytic cracking on the by-product to obtain N2 / H2O and recycling. The device comprises a micro-reaction unit, a microwave-radial reactor, a membrane coupling rectifying tower group and a tail gas cracking unit. Zero emission of ammonium sulfate is achieved, the product purity is larger than or equal to 99.95%, and energy consumption is reduced by 45%.

The invention relates to a textured KCu7S4 thermoelectric material and a preparation method thereof, and the method comprises the steps: sequentially adding a prepared KOH aqueous solution, CuCl2. 2H2O and Na2S. 9H2O into a high-pressure kettle, and fully stirring for dissolving; dropwise adding an N2H4.H2O aqueous solution into the mixed solution, fully stirring, sealing, transferring to a microwave chemical synthesis instrument, heating, keeping stirring, and reacting at a target temperature and self-generated pressure to generate a KCu7S4 nanowire preferentially growing along a [001] crystal orientation; and after the reaction is finished and natural cooling is carried out, a product is collected through centrifugation, full cleaning and vacuum drying are carried out, and then the KCu7S4 thermoelectric material with [001] preferred orientation in the direction perpendicular to the pressure direction is obtained through spark plasma sintering. According to the method, a surfactant and an organic solvent are not used, and macro, rapid, efficient and controllable preparation of the KCu7S4 nanowire is realized through a low-temperature, low-cost and low-energy-consumption microwave-assisted hydrothermal process.

The invention relates to the technical field of carbon black materials, and discloses special carbon black with high specific surface area and a preparation method thereof, and the special carbon black is prepared by pyrolysis and activation treatment of a precursor mixture, a catalyst and a template agent. The precursor mixture contains a biomass refined product, waste polymer pyrolysis oil and a copolymer template agent, and the performance is optimized through a rotating flow field high-temperature reactor and a microwave-assisted activation process. The carbon black has a hierarchical porous structure, the specific surface area reaches 2000-2500m < 2 > / g, the conductivity is improved by 1-2 orders of magnitude, and the chemical properties can be regulated and controlled through surface functionalization. The low-cost and sustainable production is realized, the mechanical strength, the conductivity and the adsorption performance are remarkably improved, and the requirements of the high-end field are met.

The invention relates to a preparation method of a microwave-assisted synthesized near-infrared electrochemical luminescence gold nanocluster and application of the gold nanocluster in miRNA (micro Ribonucleic Acid) detection. The preparation method comprises the following steps: under a stirring condition, adding a gold source and alkali into a Met solution to obtain a mixed solution, carrying out microwave irradiation reaction, and carrying out solid-liquid separation to obtain a Met-Au NCs solution; the preparation method comprises the following steps: activating a Met-Au NCs solution by using EDC and NHS, adding a DNA solution, mixing, and dialyzing to obtain a Met-Au NCs-DNA compound, namely the near-infrared electrochemical luminescence gold nanocluster. Compared with Au NCs prepared by a common mild method, the Met-stable Au NCs prepared by a microwave-assisted method has the advantage that the fluorescence and electrochemical luminescence efficiency at 835 nm is improved. The invention also provides a'signal closing 'ECL (electron cyclotron ligand) biosensor for high-sensitivity detection of the miRNA-107 (MicroRNA-107), and a method for detecting the miRNA-107 (MicroRNA-107). The sensor is simple to operate and good in repeatability, and has important scientific significance and application value for clinical early diagnosis of cancers.

The invention provides a heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity drainage, and belongs to the field of oil-gas field development. The experimental device comprises a three-dimensional oil reservoir simulation system, a microwave-assisted heating system, a horizontal well injection-production regulation and control system and a multi-field monitoring system; the microwave auxiliary heating system comprises a microwave generation regulation and control system, a microwave transmission system and a shaft integrated microwave radiator, the microwave generation regulation and control system comprises an industrial grade microwave generator, a power regulator and a PLC, and the microwave transmission system comprises a microwave coaxial cable and a microwave waveguide tube bundle; and the microwave generator is continuously connected with the microwave waveguide tube bundle and the shaft integrated microwave radiator. According to the heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity oil drainage, the technical problems that an existing deep heavy oil thermal recovery experimental device cannot reproduce a'thermal-flow-force 'multi-field coupling environment, the microwave heating adaptability is poor, and the experimental scale and the field deviation is large are solved. The heavy oil thermal-flow coupling development experimental device and method based on microwave-assisted gravity oil drainage solve the technical problems that an existing deep heavy oil thermal recovery experimental device cannot reproduce the'thermal-flow-force' multi-field coupling environment.

The invention discloses a preparation method and application of a wind cap of a circulating fluidized bed gasifier, the wind cap is arranged at the bottom of a gasifier body, the wind cap mainly comprises a wind cap gas inlet, a wind cap gas outlet and a wind cap gas flow channel, and the wind cap gas flow channel is composed of a Tesla valve fluid channel. The air cap is prepared from modified fly ash through a combined method of freezing ball-milling nano modification, 3D printing coupling microwave-assisted sintering and salt bath chromizing strengthening. According to the method, a large amount of solid waste of fly ash can be consumed to realize carbon emission reduction, the efficiency of the circulating fluidized bed can be improved through structural optimization, meanwhile, the preparation cost of the hood can be reduced, and the method has relatively high application and popularization values.

This disclosure describes an apparatus that enables rapid transitions during microwave-assisted magnetic recording (MAMR) of storage media. In various aspects, the apparatus incorporates a driver circuit configured to provide a controlled bias current through separate source and sink output terminals, which respond to feedback signals. An MAMR sensor connects between the source and sink output terminals and generates microwave fields when receiving the controlled bias current from the driver circuit. A common-mode feedback (CMFB) loop connects to the source and sink output terminals, detects common-mode voltage (CMV), and delivers feedback signals to the driver circuit to maintain CMV regulation of the MAMR sensor. A differential voltage regulation loop connects to the source and sink output terminals, providing feedback signals that maintain the MAMR sensor voltage differential at a reference value. The apparatus controls the magnetic recording process of the MAMR sensor with rapid transition times.

The invention discloses equipment and a process for efficiently and continuously extracting astaxanthin by a low-frequency microwave-assisted eutectic solvent method, and belongs to the technical field of bioactive substance extraction. The method for extracting astaxanthin by the low-frequency microwave-assisted eutectic solvent method comprises the following steps: performing low-frequency microwave pretreatment on a eutectic solvent to obtain a high-temperature pretreated eutectic solvent; cooling the pretreated eutectic solvent, then mixing the pretreated eutectic solvent with crustacean byproducts, performing eutectic solvent extraction treatment, performing ultrasonic-assisted extraction in the process, and then performing solid-liquid separation to obtain filtrate; mixing the filtrate with an extraction solvent, and extracting to obtain an extraction solvent phase containing astaxanthin and a eutectic solvent phase; and removing the extraction solvent in the extraction solvent phase containing the astaxanthin to obtain an astaxanthin product.

The invention relates to the field of comprehensive utilization of biomass resources and preparation of high polymer materials, in particular to a green preparation method of high-deacetylation-degree chitin capable of recycling reaction waste liquid. The invention aims to solve the problems of serious environmental pollution, resource waste, low product purity and incomplete waste liquid recycling in chitin extraction. The method comprises the following steps: by taking crustacean biomass as a raw material, firstly carrying out high-voltage pulse electric field pretreatment to crush the tissue structure of the raw material and improve the reaction activity, and then heating and extracting in a choline chloride-lactic acid deep eutectic solvent system to realize efficient removal of proteins and inorganic salts in the raw material; according to the method, the chitin and the alkali liquor are subjected to a rapid deacetylation reaction by adopting microwave assistance and cooperating with the action of the phase transfer catalyst; according to the method, a waste liquid graded recycling system is adopted, hydrochloric acid in waste acid liquid generated by decalcification is recycled through electrodialysis, alkali liquid is recycled through ultrafiltration-nanofiltration double-membrane combination, deep eutectic solvent components are recycled through reduced pressure distillation, and recycling of acid, alkali and a solvent is achieved.

The invention discloses a microwave-assisted laser communication method, which comprises the following steps of: adopting time slot allocation in a task preparation stage, performing transmission of first message information and mutual identification among nodes by utilizing microwaves, and not considering the priority of the first message information in transmission; time slot allocation is adopted in the pointing link establishment stage, and the second message information is transmitted based on the priority of the second message information by utilizing microwaves so as to establish a link and track the node.

Partially oxidized carbonaceous materials characterized by substantially homogenous, partially oxygenated surfaces thereof are enabled via microwave-assisted methods that are simple and fast. The exemplary methods include combining carbonaceous material(s), at least one mild oxidizer, at least one nucleophile, and an aqueous solvent system to obtain a mixture; and exposing the mixture to microwave radiation for a predetermined time to produce partially oxidized carbonaceous materials. The predetermined time may be in a range from about 5 seconds to about 2 hours, and the power of the microwave energy may be in a range from about 100 w to about 1700 W. The partially oxidized carbonaceous materials are characterized by a homogeneous distribution of oxygen content in surfaces thereof, in nonzero amounts up to about 10 at %, and a standard deviation of surface oxygen content in a range from about 0.1 at % to about 1.0 at %.

The application relates to the field of high polymer composite materials, and particularly discloses a high-strength and high-toughness wood-plastic composite material based on carboxyl-functionalized ionic liquid modified lignin and a preparation method thereof. The carboxyl-functionalized ionic liquid is covalently grafted with the phenolic hydroxyl group of lignin to form a chemical bond, and the long-chain structure of the carboxyl-functionalized ionic liquid forms physical entanglement at the interface of the wood-plastic composite material, so that the interface bonding strength is improved through the double effects, the tensile property and the bending property are significantly improved, the impact strength can be effectively restored or even improved through improved microwave-assisted homogeneous reaction parameters, and the dilemma of "strengthening and being brittle" is solved.

The invention relates to the technical field of carbon nanosheet preparation, and discloses a carbon nanosheet precursor ratio intelligent decision-making method based on machine learning. Data collection: collecting data samples of different mass ratios, corresponding preparation parameters and performance indexes of the carbon nanosheets of the citric acid and the urea in the process of preparing the carbon nanosheets by the microwave-assisted method; 2, data preprocessing: preprocessing the collected data samples, including data cleaning, normalization and feature selection, so as to improve data quality and applicability; according to the intelligent decision-making method for the carbon nanosheet precursor proportion based on machine learning, the proportion of citric acid and urea is accurately regulated and controlled through a machine learning model based on historical data and real-time feedback, so that the structure and performance of the carbon nanosheet are better, and the detection sensitivity of an electrochemical sensor to substances such as heavy metal ions Cu is improved; the detection limit is reduced, the anti-interference capability is enhanced, and stable and accurate detection in a complex water environment is ensured.

The utility model discloses a kind of plant fiber tableware microwave auxiliary drying setting device, it is related to tableware drying technical field.The utility model includes drying cabinet main body, drying cabinet main body front is equipped with controller, further includes: conveying mechanism, the conveying mechanism is arranged in the inside of drying cabinet main body, the conveying mechanism includes two fixedly connected in the inside of drying cabinet main body conveying seat, two the side of mutually approaching of conveying seat is all provided with chain, and the conveying seat in front is fixedly connected with motor front.The utility model is by being provided with conveying mechanism, specifically in the process of drying, since conveying mechanism is the chain mode transmission, and the space between fixed link is larger, and hollow groove is set between placing mould, to increase the flowability of air, improve drying effect, make the bottom of tableware also better be dried, reduce the situation of jamming, improve the setting effect of plant fiber.

The invention belongs to the technical field of battery materials, and particularly relates to a positive electrode active material and a preparation method and application thereof. The invention provides a preparation method of a positive electrode active material, which comprises the following steps: S1, mixing a nickel manganese precursor, a first lithium source and a dopant, introducing oxygen-containing gas, and carrying out first sintering and microwave-assisted sintering to obtain a lithium nickel manganese oxide material; wherein the temperature of the first sintering is 800-950 DEG C, the temperature of the microwave-assisted sintering is 600-700 DEG C, and the flow of the oxygen-containing gas in the microwave-assisted sintering process is larger than that in the first sintering process; and S2, mixing the lithium nickel manganese oxide material and the LATP precursor gel, and carrying out microwave-assisted coating to obtain the positive electrode active material. According to the positive electrode active material provided by the invention, the capacity and the rate capability are further improved while the high-temperature cycle performance and the safety are improved.

The invention discloses a preparation method of a wide-layer-distance novel aluminum dihydrogen phosphate layered material based on a microwave method, which comprises the following steps: (1) dispersing MXene in a solvent for ultrasonic dispersion, adding a Py monomer, and uniformly stirring; dropwise adding APS to carry out oxidative polymerization, and carrying out in-situ polymerization on polypyrrole on the surface of the MXene sheet layer; after the reaction is finished, centrifuging, washing and drying a product to obtain MXene coated PPy composite powder; (2) mixing phosphoric acid and aluminum hydroxide, stirring in a water bath to form a uniform gel precursor, adding the MXene-coated PPy composite powder into the precursor, and dispersing to obtain a modified precursor; (3) placing the modified precursor in a microwave reactor for reaction to obtain a product; and (4) carrying out cooling, suction filtration, washing, drying and crushing on the product to obtain the novel wide-layer-distance aluminum dihydrogen phosphate layered material. The method has the characteristic of efficient process design, and is mainly reflected in that the molecular interlayer spacing of the material is effectively widened, the microwave-assisted reaction time is short, the energy consumption is low, and the process is green and environment-friendly.

The application discloses a kind of bifunctional catalyst and its application in microwave-assisted preparation of biodiesel, belong to catalysis technical field.The application introduces cobalt metal in ZIF-8 skeleton, when MOFs derivative is prepared by calcination, the introduction of transition metal can construct magnetic center, adjust the magnetic loss ability of derivative material, so that the prepared catalyst has strong wave-absorbing performance under 2.45GHz industrial microwave field, can effectively absorb microwave energy and convert it into heat energy, thereby improving the energy utilization efficiency of reaction system, and finally improving the catalytic performance of catalyst, further improve the preparation efficiency of microwave-assisted biodiesel, and has good application value and prospect in catalysis technical field.

The application discloses a method for improving the quality of dissolving pulp based on microwave-assisted low eutectic solvent, and belongs to the technical field of papermaking industry. The method solves the technical problem of slow solvent mass transfer and reaction and low efficiency in the traditional heating method. The method for improving the quality of dissolving pulp based on microwave-assisted low eutectic solvent can realize the rapid viscosity reduction and reaction performance improvement of the dissolving pulp within 30-300 seconds, and overcomes the problems of slow mass transfer and reaction and low efficiency of the low eutectic solvent in the traditional heating method. The method has the characteristics of simple operation, instant high efficiency, green low carbon, low cost and recyclability.

The utility model relates to the technical field of ceramic sintering, and discloses a low-temperature fast-firing conductive ceramic microwave-assisted sintering device which comprises a microwave sintering furnace and a furnace chamber arranged on the microwave sintering furnace, the furnace chamber comprises a sintering chamber, a placing frame is connected in the furnace chamber in a sliding mode, and the placing frame comprises placing plates and sealing plates which are fixed alternately. The sealing plate is used for shielding the furnace chamber; the placing frame is arranged in the furnace chamber of the microwave sintering furnace, the placing frame is formed by alternately fixing the placing plates and the sealing plates, a plurality of conductive ceramics can be placed on the placing plates, the placing frame is moved to enable the conductive ceramics to sequentially enter the sintering chamber of the furnace chamber to be sintered, and the conductive ceramics are directly moved out after being sintered. The efficient sintering of the conductive ceramic is realized by adopting a reciprocating translation mode, the conductive ceramic is convenient to take, and the sintered conductive ceramic is still sintered when the sintered conductive ceramic is taken, so that the sintering efficiency is improved, and the phenomena of heat dissipation and energy waste caused by repeatedly opening the furnace chamber are avoided.

The invention relates to a method for preparing formic acid by wrapping tin sulfide (SnSx) with graphene oxide (GO) to improve reduction of carbon dioxide (CO2) through electro-catalysis, in particular to an efficient electro-catalysis carbon dioxide reduction system synthesized by wrapping the surface of SnSx with GO through a microwave-assisted method, and belongs to the technical field of catalytic energy. Amorphous SnSx nanoparticles are synthesized by adopting a solution method, and the surface of SnSx is coated with GO nanosheets by adopting a microwave-assisted method to form the SnSx / GO composite material. GO wrapping effectively inhibits crystallization growth of SnSx and loss of sulfur atoms in the electrochemical reduction process, and meanwhile GO is reduced into rGO in situ to optimize mass transfer. In a flow cell, the catalyst achieves a high current density of 126.25 + / -0.78 mA cm <-2 > and a formic acid Faraday efficiency (FE) of 99.9 + / -1.1%. The smooth implementation of the patent provides an efficient strategy for regulating and controlling the efficiency of reducing carbon dioxide into formic acid through electro-catalysis, solves the problem of unstable system structure in the prior art, and provides greater possibility for industrialization in the field of electro-catalysis carbon dioxide reduction.

The embodiment of the invention relates to a laser metal additive manufacturing method based on dynamic microwave assistance, and the method comprises the following steps: S1, determining technological parameters of laser additive manufacturing, and determining the size of a preset molten pool based on the technological parameters; s2, a laser beam is controlled to act on the metal material to form a liquid molten pool, meanwhile, a multi-stage microwave screening device is used for conducting spatial constraint and screening on microwave beams, and the acting range of the microwave beams is focused to the size matched with the preset molten pool size; s3, directionally applying the screened microwave beams to a liquid molten pool and a solid-liquid interface area; and S4, the screened microwave beams and the laser beams are controlled to move synchronously, and the laser beams are matched to conduct layer-by-layer stacking of materials so as to complete part forming. By realizing localization, special shape and dynamic regulation and control of a microwave energy field, inherent defects of laser are compensated from the perspective of a thermal field, and metallurgical defects are improved from the perspective of microdynamics. The invention further provides a laser metal additive manufacturing device based on dynamic microwave assistance.

The invention discloses a qualitative and quantitative detection method for graphene in a fiber fabric based on microwave assistance, and relates to the technical field of nano material analysis and detection. The qualitative and quantitative detection method comprises the following steps: adding a solvent and a dispersing agent into a fiber fabric sample, carrying out microwave-assisted dissolution treatment, adding the obtained mixture into a microwave-vortex ultrasonic-centrifugal integrated treatment system, and carrying out vortex dispersion, ultrasonic stripping and gradient centrifugal separation to obtain enriched graphene precipitate; the graphene precipitate is uniformly mixed with an internal standard substance silicon carbide, Raman spectroscopy is adopted for testing, qualitative analysis is carried out by analyzing the characteristics of a G peak and a 2D peak, and quantitative calculation is carried out on graphene according to the intensity ratio of a D peak to a silicon carbide characteristic peak. The method is efficient and accurate, and effectively solves the problems of low treatment efficiency, high cost, environmental pollution, easy damage of graphene structure and insufficient quantitative analysis precision of a traditional method.

The invention provides a microwave-assisted method for preparing high-performance concrete and application, and belongs to the technical field of concrete curing and foundation engineering construction. The high-performance concrete is prepared from, by weight, 10-40 parts of cement, 2-20 parts of basalt powder, 1-20 parts of silica fume, 1-5 parts of gypsum, 10-40 parts of quartz sand, 10-40 parts of calcined clay, 5-15 parts of limestone powder, 1-5 parts of fibers and 10-30 parts of water, the usage amount of the basalt powder, the usage amount of the silica fume, the usage amount of the gypsum and the usage amount of the fibers are not zero, and the high-performance concrete is prepared after the raw materials are mixed and formed. The obtained molded test piece is subjected to mold curing and microwave-assisted curing in sequence, and the high-performance concrete is obtained. According to the invention, the synergistic effect of various mineral components such as calcined clay, limestone powder and the like is adopted, and the synergistic improvement of the mechanical property and electromagnetic absorption property of the concrete is realized by optimizing the proportioning amount of the mixed raw material powder and combining a microwave-assisted curing technology.

The application discloses a cement-chemicals co-production system and a control method thereof, and belongs to the technical field of carbon emission reduction and resource utilization in the cement industry. The system comprises a water electrolysis hydrogen production unit, a microwave-assisted hydrogen calcination unit, a cement clinker sintering unit, a synthetic gas purification unit, a synthetic gas proportioning unit, a chemical synthesis unit, a waste heat recovery unit and an automatic control and data monitoring unit. The microwave-assisted hydrogen calcination technology is used to decompose calcium carbonate into CO synthesis gas, oxygen by-product of water electrolysis is used for oxygen-enriched combustion, combined with accurate proportioning of synthetic gas and DCS and artificial intelligence collaborative control, the collaborative production of cement clinker and high-value chemicals is realized. The application reduces the carbon emission of the system by more than 70% compared with the traditional process, reduces the comprehensive energy consumption by more than 30%, the thermal efficiency is greater than or equal to 85%, the synthetic gas conversion rate is greater than or equal to 80%, and the carbon resource utilization rate and production stability are significantly improved, and the application has outstanding economic and environmental benefits.

This invention discloses a method for determining the content and simultaneously identifying the source of polyglutamic acid (PCA) in fertilizers based on microwave digestion-high-resolution liquid chromatography-mass spectrometry (LC-MS), belonging to the field of analytical detection technology. The method includes: microwave-assisted acid hydrolysis of fertilizer samples to obtain a hydrolysate; injecting the hydrolysate into a liquid chromatography-high-resolution mass spectrometry (LC-MS) instrument, performing a single injection analysis in data-independent acquisition (DIA) mode, and simultaneously acquiring a mass spectrometry dataset containing a full-scan fingerprint of the parent ion and fragment information of the daughter ion by alternating between low and high collision energies; extracting the precise mass number of PCA from the dataset for accurate quantification, and calculating the PCA content using the difference method; simultaneously retrieving the total ion chromatogram and inferring the source of PCA based on the response of other amino acids. This invention is the first to introduce microwave digestion pretreatment and high-resolution mass spectrometry DIA acquisition mode into the field of PCA detection in fertilizers, requiring only a single injection to simultaneously complete accurate quantification and source identification, effectively avoiding false positives caused by background of plant and animal protein hydrolysates, and significantly improving the efficiency and confidence of PCA detection in complex matrix fertilizers.

The invention relates to the technical field of preparation of alloy electrocatalysts, in particular to a method for preparing an alloy electrocatalyst by a rotary microwave-assisted method, which comprises the following steps: stirring and mixing carbon powder, cobalt chloride, deionized water and absolute ethyl alcohol, adding ammonia water, ultrasonically dispersing, filtering and collecting a filter cake, and drying to obtain the alloy electrocatalyst. Drying, heating, introducing hydrogen, carrying out heat preservation treatment, and collecting to obtain a precursor; taking the precursor, adding ethylene glycol, a sodium hydroxide solution, chloroplatinic acid and deionized water, carrying out ultrasonic-assisted treatment, collecting to obtain a mixed solution, placing the mixed solution in a sealed reaction device, and carrying out rotary microwave treatment; and carrying out pressure treatment, filtering, taking a filter cake, drying, heating, carrying out heat preservation and annealing treatment, collecting an annealed material, carrying out acid pickling treatment, and drying. The synergistic effect of the rotating microwaves ensures that the materials are uniformly heated, the particle aggregation phenomenon is reduced, a foundation is laid for the high activity and durability of the catalyst, and the method is more suitable for industrial large-scale production.

The invention discloses a real-time high-temperature high-pressure true triaxial microwave-assisted fracturing experiment system which comprises a supporting frame, and a high-temperature stress reaction kettle, a heating and temperature control module, a microwave radiation module, a loading module, a pump injection module, a monitoring module and a water circulation cooling module which are arranged on the supporting frame, the modules can be combined to meet the experimental conditions of a high-temperature and high-pressure microwave heating assisted fracturing physical simulation experiment. The heating and temperature control module can heat a test piece to simulate the temperature of an underground reservoir, the microwave radiation module can perform radiation heating on the test piece, the loading module can apply non-uniform ground stress to the test piece, and the pump injection module can perform physical simulation of fracturing on the test piece, that is, high-pressure fluid is utilized to promote internal cracks of the rock sample test piece to expand; and the detection module detects the rules of fracture, fracture and crack expansion of the rock test piece through an optical detection method.

This invention discloses a method for preparing ZSM-5 molecular sieves using a microwave-assisted method with desilication solution, comprising the following steps: First, pretreatment of the desilication solution: the desilication solution is mixed with an oxyacid to adjust the pH to 9-11.5, a template agent is added and mixed evenly to obtain an initial gel; Second, preparation of the ZSM-5 molecular sieve: the initial gel obtained in the first step is placed in a microwave synthesizer for aging with high-speed stirring; the aged solution undergoes a crystallization reaction, followed by filtration, washing, drying, and high-temperature calcination to obtain the ZSM-5 molecular sieve. This invention uses desilication solution as a raw material to prepare ZSM-5 molecular sieves, saving material costs and providing a new approach for the high-value utilization of desilication solution. Furthermore, by utilizing microwave-assisted synthesis on the basis of the traditional hydrothermal method, the time cost is effectively shortened.

The application relates to the technical field of preparation of lithium ion battery negative electrode materials, in particular to a graphene-coated silicon-carbon composite material and a preparation method and application thereof. The preparation method of the graphene-coated silicon-carbon composite material comprises the following steps: microwave-assisted sand milling mixing of a nano-silicon dispersion liquid, a pitch dispersion liquid, a three-block copolymer Pluronic F127 and zirconium oxide beads to obtain a mixed solution of pitch silicon particles; microwave-assisted sand milling dispersion of a sulfonated graphene dispersion liquid into the mixed solution of pitch silicon particles to obtain a slurry of sulfonated graphene-coated pitch silicon particles; and drying and heat treatment of the slurry of sulfonated graphene-coated pitch silicon particles to obtain the graphene-coated silicon-carbon composite material. The graphene prepared by the preparation method effectively buffers the volume effect generated in the lithium intercalation and deintercalation process of the silicon-based negative electrode material, so that the electrochemical performance of the material is improved.

The invention relates to the technical field of proteolysis, in particular to a microwave-assisted proteolysis device which comprises a sample tray arranged on the inner side of a box body, and the sample tray comprises an upper tray arranged on the inner side of the box body and a lower tray fixed to the bottom of the upper tray. A positioning assembly for synchronously clamping the plurality of enzymolysis tanks and keeping the enzymolysis tanks stable is arranged on the sample tray, and the positioning assembly comprises a plurality of first annular discs arranged on the upper tray and a plurality of second annular discs arranged on the lower tray. The stability of each enzymolysis tank during enzymolysis is ensured, non-uniform microwave heating caused by lateral inclination of the enzymolysis tanks is avoided, the reaction consistency in the enzymolysis process is improved, the proteolysis effect is enhanced, meanwhile, the stable digestion tank position can ensure that each sample reacts under the same condition, and the enzymolysis accuracy is improved. The experimental error caused by non-uniform heating of the sample is reduced, the reliability and the accuracy of the experimental result are improved, and the application range of the enzymolysis device is expanded.