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Mechanochemistry or mechanical chemistry is the coupling of mechanical and chemical phenomena on a molecular scale and includes mechanical breakage, chemical behaviour of mechanically stressed solids (e.g., stress-corrosion cracking or enhanced oxidation), tribology, polymer degradation under shear, cavitation-related phenomena (e.g., sonochemistry and sonoluminescence), shock wave chemistry and physics, and even the burgeoning field of molecular machines. Mechanochemistry can be seen as an interface between chemistry and mechanical engineering. It is possible to synthesize chemical products by using only mechanical action. The mechanisms of mechanochemical transformations are often complex and different from usual thermal or photochemical mechanisms. The method of ball milling is a widely used process in which mechanical force is used to achieve chemical processing and transformations. The special issue of Chemical Society Review (vol. 42, 2013, Issue 18) is dedicated to the theme of mechanochemistry. Fundamentals and applications ranging from nano materials to technology have been reviewed. The mechanochemical approach has been used to synthesize metallic nanoparticles, catalysts, magnets, γ‐graphyne, metal iodates, nickel–vanadium carbide and molybdenum–vanadium carbide nanocomposite powders...
Double-vacancy Fe0. 96S (at) MoS2 nano composite material as well as wet-type mechanochemical synthesis method and application thereof
The invention relates to the technical field of environmental chemistry, in particular to a double-vacancy Fe0. 96S (at) MoS2 nano composite material as well as a wet-type mechanochemical synthesis method and application thereof. The preparation method comprises the following steps: firstly carrying out co-ball milling by utilizing a wet mechanical chemical synthesis method to obtain a low-crystallinity Fe0. 96S (at) MoS2 precursor, and then carrying out further calcination treatment to accelerate the thermal reaction of the precursor, improve the crystallinity and remove redundant sulfur powder impurities, thereby obtaining the high-crystallinity Fe0. 96S (at) MoS2 nano composite material. Iron powder is introduced in the process of preparing MoS2 nanosheets from molybdenum powder and sulfur powder, the reaction activity of the molybdenum powder and the sulfur powder is improved and the formation energy of MoS2 is reduced by utilizing the characteristic of ball-milling heat release of the iron powder and the sulfur powder, the reaction barrier that MoS2 is difficult to prepare between Mo and S through a mechanical ball-milling process originally is broken, and the generation of the MoS2 nanosheets is promoted.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)
Hybrid organic-inorganic perovskite compounds for metal ion sensing applications and process of preparation thereof
PCT designated stageWO2025177304A1Organic compound preparationCopper organic compoundsChemical synthesisPhysical chemistry
The present invention generally relates to a field of material science and chemistry. Specifically, the present invention relates to synthesis and characterization of lead-free hybrid organic-inorganic Perovskite compounds for metal ion sensing applications. More particularly, the present invention relates to lead-free low dimensional manganese (Mn)- and copper (Cu)- based hybrid organic-inorganic perovskites (HOIPs) for visual fluorometric Pb2+ ion detection. Further, the present invention relates to synthesis of lead-free low dimensional manganese (Mn)- and copper (Cu)-based hybrid organic-inorganic perovskites (HOIPs) via mechanochemical synthesis methodology.
Owner:COUNCIL OF SCI & IND RES
Metal sulfide / biochar composite material based on mechanochemical method as well as preparation method and application of metal sulfide / biochar composite material
The invention discloses a metal sulfide loaded biochar demercuration adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out mechanochemical grinding on a biomass raw material and metal sulfate through a high-energy ball mill to obtain a uniform precursor; and then performing one-step pyrolysis in an inert atmosphere, synchronously carbonizing the biomass and reducing the metal sulfate into metal sulfide, and finally preparing the metal sulfide nanoparticle and charcoal matrix strong coupling composite material. The method is simple in process, green and efficient, and avoids the defects of a traditional liquid phase method. The prepared adsorbent is high in active component dispersity, is firmly combined with a carrier, shows high adsorption capacity, high removal efficiency and good anti-interference stability for elemental mercury in flue gas, and has a wide application prospect in the field of mercury pollution control of coal-fired flue gas.
Owner:SHANDONG UNIV SHENZHEN RES INST
A method and system for efficiently detoxifying, improving and reusing waste incineration fly ash
The present invention relates to hazardous waste treatment technology, and aims to provide a method and system for efficient detoxification, quality improvement and reuse of fly ash from garbage incineration. The method utilizes a stirred ball mill reactor, a secondary water washing unit, a tertiary water washing unit and a fired-free brick preparation unit arranged in sequence, and couples a wet mechanochemical method with a carbonation, multi-stage water washing and fired-free pressing treatment process to achieve detoxification, quality improvement and reuse of fly ash from garbage incineration; before the flue gas is introduced to start the carbonation reaction, the fly ash is first subjected to a wet mechanical ball milling pretreatment, and a heavy metal composite stabilizer is added according to the characteristics of the reaction system, so that phosphate and tris-mercapto-s-triazine trisodium salt react with heavy metals respectively to stabilize the heavy metals in the solid phase medium. The present invention can improve the ability of fly ash to seal carbon dioxide, and the hardness of the obtained water washing liquid is lower than , and the heavy metal content is extremely low, which reduces the cost of the existing evaporation crystallization process; the risk of heavy metal leaching is low, the fly ash dechlorination efficiency is high, and the mechanical properties of the prepared fired-free bricks are better than those of the prior art.
Owner:CHONGQING UNIV +1
Plasma ball-milled bamboo-based hard carbon negative electrode material and preparation method and application thereof
The invention discloses a plasma ball-milled bamboo-based hard carbon negative electrode material as well as a preparation method and application thereof. The plasma ball-milled bamboo-based hard carbon negative electrode material is sequentially treated by the steps of pretreatment, pre-oxidation, plasma ball-milling and high-temperature carbonization. Natural regular hierarchical pore channels and rich cellulose components of the southern moso bamboos provide an ideal structural template for hard carbon preparation; through the synergistic effect of pre-oxidation and plasma ball milling, an oxygen-containing functional group is introduced in the pre-oxidation to guide ordered stacking of carbon layers, and the plasma ball milling removes ash and optimizes the conductivity of a carbon skeleton through a mechanochemical effect. The negative electrode prepared from a sample subjected to ball milling for 15 minutes can still keep the reversible specific capacity of 254.9 mAh.g <-1 > after being circulated for 150 times under the current density of 1.0 A.g <-1 >, and the capacity retention rate is as high as 88%; benefited from a structure regulation and control strategy, the bamboo-based hard carbon negative electrode material subjected to plasma ball milling treatment shows excellent sodium storage performance when being used as a negative electrode of a sodium-ion battery.
Owner:NINGDE NORMAL UNIV
Method for efficiently recycling platinum group metal in waste catalyst through photocatalysis and application of method
The invention belongs to the technical field of precious metal recovery, and provides a method for efficiently recovering platinum group metal in a catalyst through photocatalysis and application thereof, and the method comprises the following steps: mixing a waste catalyst crushed material and metal powder, carrying out mechanochemical treatment, adding an acid solution, and reacting to obtain a modified waste catalyst; the modified waste catalyst and the leaching solution are mixed to obtain suspension liquid, then the suspension liquid is irradiated through ultraviolet-visible light for a photocatalytic reaction, filtering is conducted, and platinum group metal leaching liquid and leaching residues are obtained; and regulating the pH value of the platinum group metal leachate, adding an oxidizing agent, and extracting and separating the transition metal chloride by using an extracting agent to obtain the platinum group metal solution. According to the method, the platinum group metal particles are regulated and controlled while mechanical and chemical treatment activation is adopted, so that the platinum group metal particles generate the plasma resonance effect, strong redox active species generated by a photocatalyst under the illumination condition are converted into soluble compounds through complexation, and efficient leaching and recycling are achieved.
Owner:SHANGHAI SECOND POLYTECHNIC UNIVERSITY
Mechanochemical treatment method and application of high-entropy oxide
PendingCN121607161AWater contaminantsMetal/metal-oxides/metal-hydroxide catalystsActivated charcoal powderActivated carbon
The invention provides a mechanochemical treatment method of a high-entropy oxide and application of the mechanochemical treatment method. The high-entropy oxide is an oxide composed of five or more transition metals (at least including iron, cobalt, manganese, zinc and nickel elements). The method comprises the following steps: adding the high-entropy oxide into activated carbon powder (including coconut shell powder, walnut shell powder, bamboo charcoal powder and the like) or directly carrying out mechanochemical treatment, carrying out grinding by mainly adopting a grinder or a ball mill in the mechanochemical treatment, controlling grinding conditions to prepare an active super-stable catalyst, and introducing the catalyst and ozone into pollutants of benzotriazole, and benzotriazole can be degraded. The high-entropy oxide subjected to high-temperature roasting is treated by a mechanochemical method to obtain the ozone catalyst with both activity and stability, and the ozone catalyst is used for a long time in an acid environment, less in metal ion leaching, high in catalytic activity and good in ozone catalyst efficiency.
Owner:NANJING TECH UNIV
Green and efficient purification method of high-purity quartz sand
The invention relates to the technical field of quartz sand purification, in particular to a green and efficient purification method of high-purity quartz sand, which comprises four steps of mechanical-chemical synergistic pretreatment, microwave-assisted deep impurity removal, directional adsorption purification and ultrapure water washing and drying. The traditional hydrofluoric acid process is replaced by the composite organic acid, so that the COD (Chemical Oxygen Demand) of the wastewater is reduced by more than 90%, the waste liquid treatment cost is greatly reduced, meanwhile, the problem of corrosion of strong acid to equipment is avoided, the energy consumption is reduced by 40% through the microwave process, and no chlorine is discharged, so that the production process is more environment-friendly and safer, the content of Al2O3 is reduced from 500ppm to 8ppm, and the production cost is reduced. Compared with the prior art, the method provided by the invention has the advantages that the content of Fe2O3 is reduced from 200ppm to 3ppm, meanwhile, the inclusion removal rate is greater than 99.5%, and the purity of SiO2 reaches 99.995%, so that the problem that micron-sized inclusion impurities are difficult to deeply remove is solved, and the purification efficiency is greatly improved.
Owner:HENAN XINXIN SILICON-BASED NEW MATERIALS CO LTD
Kaolin hemostatic material with anti-inflammatory function and its preparation method and application
The present invention relates to the technical field of hemostatic materials, and in particular to a kaolin hemostatic material with anti-inflammatory function, and a preparation method and application thereof. The kaolin hemostatic material with anti-inflammatory function of the present invention comprises kaolin loaded with CeO2 nanoparticles. The preparation method comprises mixing kaolin with cerium chloride, sodium carbonate and sodium chloride in a certain mass ratio, ball milling the mixture and obtaining a precursor, and calcining the precursor to obtain the kaolin hemostatic material with anti-inflammatory function. The present invention adopts kaolinite, which is inexpensive and abundant in reserves, as a raw material, selects conventional CeO2 raw material, and prepares a kaolin-based nanomaterial loaded with CeO2 by a mechanochemical synthesis method, thereby preparing a CeO2 / K nanomaterial with synergistic anti-inflammatory and hemostatic activity.
Owner:CENT SOUTH UNIV +1
A method and system for thermal imaging analysis of abrasive energy changes during mechanochemical processing.
This invention discloses a method and system for analyzing the energy changes of abrasives during mechanochemical processing using thermal imaging, relating to the field of machine vision technology. The method includes pre-processing the material to obtain a material precursor; laying the mechanochemically processed material product flat in an air-exposed environment for spontaneous combustion, and capturing thermal images of the burning material until it self-extinguishes; performing infrared image recognition on the infrared thermal imaging video, and calculating the energy based on the recognition results. The method of this invention transforms the uncertain black box model inside the ball mill jar into a deterministic energy model through thermal imaging and infrared image recognition technology, thus overcoming the black box problem of the mechanochemical ball milling process. By calculating the combustion energy from the image recognition results, the energy obtained by the abrasive in the mechanochemical ball milling method can be inferred, providing an effective experimental approach for the internal energy conversion process of abrasives processed by mechanochemical methods.
Owner:SHANGHAI JIAOTONG UNIV
A method of patterned additive manufacturing of a metal organic framework material
PendingCN122144657AAdditive manufacturing apparatusDecorative surface effectsSolution treatmentNano structuring
The application provides a metal organic framework material patterning additive manufacturing method, and relates to the technical field of additive manufacturing.The application proposes a new strategy of MOF micro-nano additive manufacturing based on mechanical chemical fixation and hydrothermal conversion, and the application utilizes the mechanical friction effect of a friction pair on the surface of a base material to fix metal oxide precursor micro-nano structures in a preset track in a directional and quantitative manner, so as to form an accurate patterned prototype; then, the fixed precursor is reacted with an organic ligand through a hydrothermal reaction, so as to be directionally converted into a corresponding MOF structure.The application implements the patterning construction of the precursor and the conversion of the MOF in steps, so as to not only ensure the fineness of the precursor structure, but also ensure the sufficiency and crystallinity of the MOF conversion.The whole process does not need a mask, does not need electron beam exposure, and does not need a developing solution treatment, has low requirements on equipment, is simple to operate, has a cost significantly lower than that of a traditional photolithography technology, and has good material universality and base adaptability.
Owner:YANTAI ADVANCED MATERIALS & GREEN MFG SHANDONG PROVINCIAL LAB +1
Method for co-recycling battery positive electrode and plastic through liquid metal assisted mechanochemistry
PendingCN121416659ATransportation and packagingSolid waste disposalElectrical batteryEnvironmental engineering
The invention discloses a method for co-recycling a battery positive electrode and plastic through liquid metal assisted mechanochemistry, and relates to the technical field of waste battery recycling, the method comprises the following steps: putting a positive electrode piece obtained by disassembling waste alkali metal ions or alkali metal batteries, waste plastic particles and liquid metal into a container for mechanical mixing; the particle sizes of the positive pole piece and the plastic particles of the battery are reduced under the action of mechanical force, and meanwhile, valuable metals in the positive pole piece are reduced into metal ions which are soluble in water. And drying a product subjected to mechanical force action, putting the dried product into water to leach valuable metal ions, and carrying out operations such as metal separation and extraction. A clean and efficient mechanochemical method is used, and the waste battery pretreatment process is simplified. Meanwhile, according to the scheme, valuable metal in waste alkali metal ions or alkali metal battery positive electrode materials is rapidly and efficiently recycled under the mild condition, waste plastic is converted into resources, resource waste and environmental pollution are relieved from the source, and recycling of the waste plastic is achieved.
Owner:HUNAN UNIV
Method for manufacturing sulfur-containing materials
To provide a method for manufacturing a sulfur-containing material that enables the formation of a battery with high discharge capacity.SOLUTION: A method for manufacturing a sulfur-containing material includes a mechanochemical treatment step of mechanochemically treating a raw material composition containing a sulfur component and a sulfur-modified compound.SELECTED DRAWING: None
Owner:ADEKA CORP
Electrochemical catalyst including nano-silicate composite, manufacturing method therefor, and electrode composition and electrode including same
The nano-silicate composite according to various embodiments may include nano-silicon oxide, nano-silicon, and magnesium silicide between ion-conductive forsterite (Mg2SiO4), enstatite (MgSiO3), and magnesium disodium silicate (Na2MgSiO4) particles. A manufacturing method for the nano-silicate composite according to various embodiments may include mixing a silicate precursor, a metal reductant, and additives; and performing a mechano-chemical reaction by mixing the silicate precursor, metal reductant, and additives with beads. An electrode composition according to various embodiments may include the nano-silicate composite of the present disclosure. An electrode according to various embodiments may include the nano-silicate composite of the present disclosure.
Owner:G I TECH
Method for extracting lithium from waste lithium iron phosphate
The invention discloses a method for extracting lithium from waste lithium iron phosphate, and belongs to the technical field of recycling treatment of waste lithium ion batteries. A method for extracting lithium from waste lithium iron phosphate comprises the following steps that S1, aluminum and waste lithium iron phosphate are mixed and subjected to ball milling in a high-energy ball mill, and materials are evenly mixed and subjected to a mechanochemical reaction; s2, uniformly mixing the ball-milled material with water, and filtering for the first time to obtain a first filtrate and a filter cake; s3, heating, evaporating, concentrating and drying the first filtrate; and S4, carrying out heat treatment on the dried solid, adding water, uniformly mixing, carrying out secondary filtration, heating, evaporating and drying the obtained second filtrate to obtain lithium carbonate. According to the method for extracting the lithium from the waste lithium iron phosphate disclosed by the invention, on the basis of a mechanochemical method, metal aluminum is used as a reducing agent, and the recovery of the lithium metal element in the waste lithium iron phosphate material is successfully realized through a mechanochemical reaction.
Owner:WANXIANG 123 CO LTD
A method for preparing heavy metal adsorbent materials by co-grinding and pyrolysis of petroleum-contaminated soil and iron oxides.
This invention discloses a method for preparing heavy metal adsorbent materials (PCS) by co-milling and pyrolysis of petroleum-contaminated soil and iron oxides. First, iron oxides or their natural minerals are added to the petroleum-contaminated soil. Then, a high-energy ball milling process is used for mechanochemical activation. The milled mixture is then subjected to slow pyrolysis to form carbonized soil with a surface rich in carbonates and metal oxides. This carbonized soil can be used to adsorb heavy metals from wastewater, with a maximum adsorption capacity of over 300 mg / g for lead. This method simultaneously achieves efficient remediation and high-value resource utilization of PCS through the exploitation, value-added transformation, and "waste-to-waste" approach of the endogenous resources of petroleum-contaminated soil. It contributes to the innovation of petroleum-contaminated soil remediation models and the synergistic remediation of soil-water pollution.
Owner:CHANGZHOU UNIV
Mechanochemical reactors with a self-regulating thermal management system based on heat pipes
A single- or multi-stage mechanochemical reactor (1) according to Figure 1, selected from the group consisting of ball mills, attritor ball mills, vibrating ball mills, resonant acoustic mixers, hammer mills, impact mills, pin mills, cutting mills, jet mills and twin-shaft extruders, equipped with a self-regulating thermal management system for a temperature range of -195°C to 1000°C, wherein - the self-regulating thermal management system comprises at least one heat pipe (2) and / or at least one flat heat pipe (3) and at least one heat source (4) and at least one heat sink (5) which are in thermally conductive contact with each other, - that at least one heat pipe (2) and / or at least one flat heat pipe (3) is or are installed in and / or a static component (1.1) of the reactor (1) and is or are in thermally conductive contact with the material to be ground (1.2) or the material to be ground (1.2) and the grinding media or grinding balls (1.4) in at least one grinding chamber (1.3) of the reactor (1) and - the static component (1.1) serves as a heat source (4) or as a heat sink (5) for the at least one heat pipe (2) and / or the at least one flat heat pipe (3); as well as its use in the fields of chemistry, biochemistry, nanotechnology, pharmacy, biology and microbiology, and environmental technology.
Owner:MUNCH ELKE
A process for the preparation of difluorooxalate borate
This invention discloses a method for preparing difluorooxalate borate. The method includes the following steps: S100, placing the reactants in a mechanochemical reaction apparatus for a staged solid-phase transformation reaction to obtain crude difluorooxalate borate. The reactants are tetrafluoroborate and oxalic acid or oxalate. During the reaction, volatile substances generated are removed and recovered. S200, the crude difluorooxalate borate obtained in step S100 is subjected to crystallization treatment to obtain the difluorooxalate borate product. The method for preparing difluorooxalate borate provided by this invention uses tetrafluoroborate and oxalic acid or oxalate as reactants in a mechanochemical reaction apparatus. It does not require a large amount of reaction solvent, obtains the target product in one step without generating a large amount of waste liquid, and has a simple post-processing procedure. Byproducts are continuously removed during the reaction, promoting the forward reaction. This is a green and efficient method for preparing difluorooxalate borate.
Owner:广东兆瑞新能源技术有限公司
Mechanochemical process for the production of BP, B12P2 and mixtures thereof, particularly as nanopowders
The present invention relates to a process for the preparation of boron phosphide, more specifically BP and / or B12P2, comprising the mechanochemical reaction of boron phosphate (BPO4) with at least one alkaline earth metal (EA). In particular, the process of the invention allows the selective preparation of BP or B12P2 with a purity greater than 95%, by reducing boron phosphate (BPO4) with at least one alkaline earth metal (EA) according to reaction (1) for BP and according to reaction (2) for B12P2: BPO4 + 4 EA -> BP + 4 EA(O) (1) 2BPO4 + 5 (EA)B2 + 3 EA -> B12P2 + 8 EA(O) (2). The present invention also relates to boron phosphide powders, in particular BP or B12P2 powders, of nanometric or micrometric size.
Owner:SORBONNE UNIVERSITÉ (34 00) +2
Systems and methods for making and using superabsorbent porous gels
Superabsorbent and rapidly expanding porous gels can be made from the in situ foaming of a monomer solution (e.g., acrylic acid and acrylamide) using a double-barreled syringe having an acid and a base in respective barrels. Gas (e.g., CO2) can be generated at the mixing tip of the syringe by the acid-base reaction, and gas bubbles may be stabilized by an amphiphilic polymer in one of the barrels. Monomers can be polymerized by ultraviolet (UV) light to form the gel around the bubbles, and the material can be dried under ambient conditions to yield a porous solid. A resulting gel can absorb water at an extremely high rate until equilibrium is achieved, for example, at ˜300 times its weight and / or at more than 3 times its size. Such expansion can be used to lift weight, in mechanical work, in new designs for mechano-chemical engines, in artificial muscles, etc.
Owner:UNIV OF MARYLAND
Fly ash-based hierarchical pore molecular sieve composite material as well as preparation method and application thereof
PendingCN121988280AOptimize adsorption kineticsHigh dissolution rateGas treatmentOther chemical processesMolecular sieveActive site
The invention relates to a fly ash-based hierarchical pore molecular sieve composite material as well as a preparation method and application thereof, and belongs to the technical field of molecular sieve composite materials. In order to solve the problems that an existing fly ash based molecular sieve is single in pore structure, can only adsorb single pollutants and is complex in preparation process, the invention provides a preparation method of a fly ash based hierarchical pore molecular sieve composite material. The method comprises the following steps: carrying out mechanical-chemical coupling activation on fly ash, carrying out alkali fusion activation treatment, preparing a colloidal precursor, carrying out hydrothermal crystallization treatment, carrying out post-treatment on a crystallized product, and carrying out metal ion modification treatment. A micropore-mesopore-macropore three-level pore channel is constructed, the mass transfer efficiency and the adsorption activity are improved, double active sites are formed through metal modification, heavy metal and CO2 can be synchronously adsorbed, and the CO2 capacity is improved by 10-15% through heavy metal loading. The one-step method is adopted for preparation, the process is simplified, the cost is low, high consumption of fly ash is achieved, and the benefits of solid waste recycling and multi-pollutant cooperative treatment are achieved.
Owner:HAMI LVJIAN ENVIRONMENTAL PROTECTION TECH MATERIALS CO LTD +1
Method for synthesizing ITH type molecular sieve based on silica gel waste ball-milling solid-phase crystallization
The invention relates to the technical field of molecular sieve synthesis and solid waste recycling, and particularly discloses a method for preparing an ITH type molecular sieve from silica gel waste through a ball-milling solid-phase crystallization method. The method comprises the following steps: mixing waste silica gel as a main silicon source with an aluminum source, an alkali source, an organic template agent and deionized water, directly carrying out mechanochemical activation and solid-phase reaction through high-energy ball milling without conventional hydrothermal crystallization, and then carrying out solid-phase crystallization at a relatively low temperature to finally obtain the ITH type molecular sieve with good crystallinity. According to the method, a ball-milling solid-phase crystallization method is applied to synthesis of the ITH type molecular sieve for the first time, and full-amount and high-value utilization of the silica gel waste is successfully realized. The method has the remarkable advantages of short process flow, no need of a large amount of solvent, low energy consumption, low cost and environmental friendliness, and opens up a new path for industrial low-cost preparation of the ITH type molecular sieve and green recovery of silica gel waste.
Owner:QINGDAO MAKALL GROUP CO LTD +1
Thermal barrier coating powder and method for producing the same, thermal barrier coating
The present disclosure provides a thermal barrier coating powder and a preparation method thereof, and a thermal barrier coating, and relates to the technical field of high-temperature protective coating materials. The method comprises: performing mechanical-chemical grinding and surface hydroxylation treatment on a MAX phase powder; dispersing an activated MAX phase core in a liquid phase, uniformly coating a YSZ precursor on the surface of the core through double titration co-precipitation to obtain a core-shell structure precursor slurry; performing microwave hydrothermal treatment to in-situ crystallize the YSZ precursor to form a YSZ shell layer on the surface of the MAX phase core, thereby obtaining a core-shell structure unit; the core-shell structure unit has a core-shell structure composed of a MAX phase core and a YSZ shell; performing post-treatment and spray drying on the core-shell structure unit to obtain a thermal barrier coating powder; and the powder is obtained by agglomeration of multiple core-shell structure units. The interface between the core and the shell of the powder obtained by the method is firmly combined, can provide oxidation protection for the inner core of the MAX phase in coating preparation processes such as thermal spraying, and significantly improves the fracture toughness and thermal shock resistance of the thermal barrier coating.
Owner:XIAN RARE METAL MATERIALS RES INST CO LTD
Preparation method of sub-micron powder of high-entropy nitride via nitride thermal reduction with soft mechano-chemical assistance
A preparation method of submicron powder of high-entropy nitride via nitride thermal reduction with mechano-chemical assistance, comprising material preparation—grinding—activation—preforming—reaction. In the present invention, high-entropy metal nitride and silicon nitride is used as raw materials, soft mechanochemical activation technologies are used to reduce reaction activation energy of the system, thereafter, by thermal reduction of the nitride, high-purity high-entropy nitride powder is prepared with solid phase methods, and the shortage of high-purity high-entropy nitride powder is addressed. There is no impure phase in the (Hf0.2Zr0.2Ti0.2Nb0.2Ta0.2)N high entropy powder prepared according to the present invention, and a single phase solid solution of good crystallinity is formed, and distribution of elements and ingredients in the powder is even, no foreign element is present, and oxygen content is controlled to be less than 0.3%.
Owner:BEIFANG UNIV OF NATITIES
Method, system, apparatus and medium for activated humic acid release of silkworm sand
This invention discloses a method, system, equipment, and medium for activating and promoting the release of humic acid from silkworm excrement. The method includes: mechanochemical synergistic crystal-breaking pretreatment, i.e., dry ball milling to destroy the physical encapsulation structure and induce a local alkaline microenvironment under chemical solvent-free conditions; stepwise enzymatic hydrolysis bridging activation, utilizing the acid buffering properties of silkworm excrement, sequentially adding uricase, cellulase / hemicellulase, and laccase or manganese peroxidase to form a natural pH fluctuation curve; directed microbial induction and release promotion, inoculating with Bacillus amyloliquefaciens and Bacillus lentigines for liquid fermentation to achieve metal ion chelation and surface charge regulation; and finally, low-temperature drying and molding to obtain the product. This invention also discloses the system, computer equipment, and storage medium for implementing this method. This invention does not require the addition of external acids, alkalis, or chemical chelating agents, shortens the total cycle to 2-4 days, and the obtained product has a high water-soluble humic acid content, which enhances the resistance to refixation after application to the soil.
Owner:HUBEI AO JIA FERTILIZER CO LTD
A method for synthesizing electrochemically active oxazine carbon material
The present invention relates to the technical field of nano-carbon materials, and in particular to a kind of synthetic method of electrochemically active azine alkyne carbon material. Calcium carbide (CaC2) and cyanuric chloride (C3Cl3N3) are uniformly mixed by synthetic method of the present invention, then added into a ball mill and carried out mechanochemical reaction, and the product obtained is washed with 0.1mol / L dilute nitric acid, acetone and deionized water, and then the washed product is freeze-dried to obtain azine alkyne carbon material. The present invention utilizes cyanuric chloride monomer and calcium carbide to synthesize C N heterocyclic azine alkyne carbon material in a controllable structure for the first time through the method for mechanochemical action, while realizing its morphology and structure controllable preparation; During the process, no solvent is needed, operating conditions are mild, chemical effect is remarkable, principle is simple, raw material cost is low and easy to industrial production, the azine alkyne carbon material obtained is made as lithium ion battery negative electrode material, the performances such as charge and discharge capacity, cycle life of composite material can be improved, and it is of great significance for the development of new energy.
Owner:HENAN AGRICULTURAL UNIVERSITY
Method for preparing fuel oil from waste plastics or waste rubber
The invention belongs to the technical field of solid waste resource utilization and fuel preparation, and particularly relates to a method for preparing fuel oil from waste plastics or waste rubber. Comprising the following steps: S1, pretreating raw materials; s2, loading materials; s3, mechanochemical conversion: carrying out mechanical ball milling to break and convert molecular chains of the waste plastics or the waste rubber; and S4, product separation: carrying out solid-liquid separation on the ball-milled system, and collecting to obtain the hydrocarbon mixed fuel oil which is in a liquid state or a half-flow state at normal temperature. The method can be used for treating polyolefin and rubber wastes and a mixed system thereof, and is close to an actual complex waste plastic source; additional high temperature and organic solvents are not needed, the process is simplified, and energy consumption and environmental burden are reduced; under the synergistic effect of mechanochemistry and catalytic regulation, a normal-temperature flowable oil product can be stably obtained, and the carbon number and molecular weight distribution are more adaptive to the application scene of fuel oil; and reduction and high-value utilization of the waste plastics are realized, and a supplementary source is provided for fuel oil.
Owner:JILIN UNIVERSITY
Preparation method and application of fly ash detoxification additive
The invention discloses a preparation method and application of a fly ash detoxification additive. Coal-based solid waste is subjected to ball milling activation; fully stirring and mixing with a FeSO4 solution according to a mass volume ratio of 1: 15; h2O2 is slowly added into the mixture, and stirring is performed for 8-12 h; filtering the precipitated solid, washing with deionized water, and drying to obtain modified coal-based solid waste; and fully mixing the modified coal-based solid waste with 10-20% by mass of calcium oxide powder, and calcining at 600-800 DEG C for 2-3 hours to obtain the fly ash detoxification additive. When being applied, the heavy metal stabilizer is added in the processes of water washing, low-temperature thermal decomposition and mechanochemical treatment, so that the temperature of low-temperature thermal decomposition degradation can be reduced, the emission of harmful heavy metals in the water washing process is reduced, meanwhile, the stabilization of the heavy metals in the mechanochemical treatment process is enhanced, and the separation of part of the heavy metals is realized; and finally, the follow-up recycling performance of the fly ash can be improved, and the effect of treating waste with waste is truly achieved.
Owner:ZHEJIANG UNIV
Preparation method of NaLnS2 transparent ceramic powder with high infrared light transmittance
The invention relates to a preparation method of NaLnS2 transparent ceramic powder with high infrared light transmittance, which comprises the following steps: by taking rare earth polysulfide LnS2 powder as a raw material and sodium fluoride or sodium sulfide as an additive, mixing the raw material and the additive to prepare a precursor of the NaLnS2 ceramic powder, putting the prepared precursor powder into an improved ball milling tank, and carrying out ball milling to obtain the NaLnS2 transparent ceramic powder with high infrared light transmittance. And carrying out mechanochemical reaction in a protective gas environment, and after ball milling is finished, separating out powder to obtain the NaLnS2 transparent ceramic powder. The problem that the NaLnS2 transparent ceramic powder is easy to oxidize due to high-temperature vulcanization is solved, and the prepared NaLnS2 transparent ceramic powder is low in oxygen content and small in particle size.
Owner:NORTHWESTERN POLYTECHNICAL UNIV