340 results about "Metal chloride" patented technology

The invention discloses a waste wind power blade recycling process. The waste wind power blade recycling process comprises the following steps that S1, a waste wind power blade is cut into blocks; wherein manufacturing materials of the waste wind power blade comprise carbon fibers and epoxy resin; s2, the block is put into a swelling solution to be subjected to swelling treatment; wherein the swelling liquid comprises a swelling agent and a solvent, the swelling agent is an inorganic metal chloride, the solvent is composed of acetone and water, in the solvent, the mass percentage of acetone is 10-40%, the mass percentage of water is 60-90%, and in the swelling liquid, the molar concentration of the swelling agent is 0.004-0.1 M; s3, cracking the block subjected to swelling treatment to obtain a cracking product containing the inorganic filler and the carbon fiber material; and S4, recycling the carbon fiber material in the cracking product. The recycling process has the advantages of being efficient, environmentally friendly, low in cost and the like, and is suitable for large-scale resource recycling of the wind power blades.

The present invention relates to a porous composite feedstock for metal chloride preparation, comprising a metal oxide containing material,; and / or a first additive; and a binder; wherein the porous composite feedstock is in particulate form; wherein the water content of the porous composite feedstock is in the range of from 0.01 to 5 wt.% based on the weight of the porous composite feedstock; and wherein the porous composite feedstock has a poured bulk density in the range of from 0.2 g / cm3 and 2.0 g / cm3.

The invention discloses a preparation method of a catalytic membrane for organic wastewater treatment, which comprises the following steps: dissolving polyvinylidene fluoride (PVDF), a pore-forming agent and plant polyphenol in an organic solvent, and stirring to obtain a membrane casting solution, wherein the PVDF accounts for 12-20%, the pore-forming agent accounts for 1-8%, and the plant polyphenol accounts for 1-6%; standing and defoaming the membrane casting solution, blade-coating the membrane casting solution on a support body to form a membrane, and performing phase inversion in a water bath to obtain the plant polyphenol modified PVDF membrane; and immersing the membrane in a 3-10 mmol / L metal chloride aqueous solution, and reacting at 40-80 DEG C for 6-48 hours, so that metal ions and polyphenol are coordinated and crosslinked, and a metal-polyphenol network layer is formed on the surface of the membrane and the inner walls of membrane pores, thereby obtaining the catalytic membrane. The catalytic membrane can activate peroxymonosulfate (PMS) and synergistically degrade organic pollutants in water under a differential pressure filtration working condition, active sites are anchored stably, metal precipitation is reduced, and flux and catalytic efficiency are both considered.

The invention provides a method for recycling valuable metal from germanium-antimony-tellurium alloy waste. The method comprises the three steps of surface treatment, chlorine reaction and compartment condensation and discharging. Oxidation films on the surfaces of the waste materials are removed through surface treatment, and the subsequent chlorine reaction efficiency is improved; then a self-made chlorination-step condensation integrated device is utilized, germanium, antimony and tellurium react with chlorine at the high temperature to generate gaseous chloride, step-by-step condensation separation is achieved through partition temperature control based on the boiling point difference of tellurium tetrachloride, antimony pentachloride and germanium tetrachloride, and target products are collected respectively; and finally, introducing inert gas to purge residual chlorine, and discharging safely. The method has the advantages of short process flow, no need of complex wet process steps and low equipment investment; metal chlorides are efficiently separated through the integrated device, and recovery is thorough; and the pyrogenic process is mainly adopted, no wastewater is generated, only tail gas is treated in a compliance manner, and the method is environment-friendly. Compared with a traditional wet process, the method has the remarkable advantages of high efficiency, low cost, environment friendliness and the like.

A rechargeable electrochemical cell (10) comprises an anode compartment (14) and a cathode compartment (15), the compartments being enclosed in part by metal plates (11, 12) that define end faces of the cell (10), the two compartments (14, 15) being separated by an impermeable, ion-conducting electrolyte element (13). The cell (10) is a molten sodium / metal chloride cell, and the plate (12) enclosing the cathode compartment defines a slightly concave end face surrounded by a flat rim. The volume change of the cathodic materials as the cell is heated up to its operating temperature are accommodated by flattening of the concave end face, so the overall thickness of the cell (10) does not change.

The invention belongs to the technical field of rubber auxiliaries and rubber tracks, and particularly relates to a coupling agent composition for inhibiting rubber appearance flooding and application of the coupling agent composition in the rubber tracks. The coupling agent composition comprises the following components in percentage by weight: 15%-30% of coupling agent, 1%-15% of metal chloride and 70%-85% of clay mineral. Different from a microcapsule technology only aiming at anti-aging agent migration, the coupling agent composition disclosed by the invention can effectively capture various types of color-flooding source substances including carbon black residues, anti-aging agents, antioxidants and the like by starting from common characteristics (containing unsaturated bonds, heteroatoms and aromatic structures) of color-flooding small molecules and through the synergistic effect of the coupling agent and metal ions, so that the color-flooding source substances can be effectively captured. And the method has wide applicability. In addition, a composite system composed of the clay, the coupling agent and the metal chloride can improve the bonding strength of the rubber and a track framework material, and is suitable for being applied to a heavy-load rubber track.

The invention provides an iron-doped copper nanocluster nano-enzyme, a preparation method thereof and application of the iron-doped copper nanocluster nano-enzyme to detection of penicillin sodium by a colorimetric method. According to the preparation method, PVP-K30 and metal chlorate are taken as initial raw materials, deionized water is taken as a solvent environment, and the iron-doped copper nanocluster nanoenzyme is prepared through oil bath heating synthesis and dialysis purification. When 3, 3 ', 5, 5'-tetramethyl benzidine-hydrogen peroxide reaction is catalyzed by the nano-enzyme, the nano-enzyme is found to have an excellent peroxidase simulation effect, and rapid colorimetric detection of penicillin sodium is realized. The nano-enzyme provides an important thought for the development of novel nano-enzymes, and has a potential application value for the detection of antibiotics in a complex matrix.

The invention belongs to the technical field of octafluorocyclopentene gas preparation, and particularly relates to a catalytic synthesis method of octafluorocyclopentene. The method specifically comprises the following step: under the action of a fluorine-chlorine catalyst, carrying out gas-phase catalytic fluorination reaction on 1-chloroheptafluorocyclopentene and anhydrous hydrogen fluoride at 80-120 DEG C to obtain octafluorocyclopentene. The preparation method of the fluorine-chlorine catalyst comprises the following steps: dissolving metal chloride in water, adding a precipitant, and fully stirring for reaction to obtain slurry; filtering the slurry to remove filtrate to obtain a solid, and washing the solid with deionized water until the solid is neutral; adding aluminum nitrate into the washed solid, fully stirring and drying to obtain a precursor of the catalyst; and performing compression molding on the precursor of the catalyst, roasting, and activating to obtain the fluorine-chlorine catalyst. The method is mild in reaction condition and high in catalytic efficiency.

The invention discloses a method for catalyzing degradation of polyolefin mixed plastic by using molten salt. The catalyst is composed of gallium chloride or gallium chloride and other metal chlorides, has a low melting point, high fluidity and strong Lewis acidity, and can degrade polyethylene (PE), polypropylene (PP), polystyrene (PS) plastics and mixtures thereof at 70-170 DEG C under a solvent-free condition to obtain C4-C16 + alkane, olefin and aromatic hydrocarbon. The method is suitable for actual waste plastic resource recovery, and has the advantages of mild conditions, low energy consumption, product controllability and the like.

The invention relates to the field of advanced flame-retardant aerogel materials, in particular to a flame-retardant heat-insulating nano-cellulose composite aerogel material, a preparation method and application. The preparation method comprises the following steps: S1, dispersing inorganic nanosheets, a nanocellulose solution and sodium alginate in water, and stirring to obtain a mixed solution; the mass ratio of the inorganic nanosheets to the nanocellulose solution to the sodium alginate to the deionized water is (0-5): (50-100): 2: 98; s2, slowly pouring the mixed solution into a mold, putting the mold into a refrigerator for freezing, after a sample is completely frozen, putting the sample into a surface active solvent, and adding metal chloride and a cellulose cross-linking agent into the solvent at the same time; then sodium alginate ion crosslinking and cellulose crosslinking are carried out under the condition of subzero; the mass ratio of the metal chloride to the cellulose cross-linking agent to the surface active solvent is (0.5-1.1): (1-2): 200; and then putting the mixture into a blast oven for normal-temperature and normal-pressure drying to obtain the flame-retardant and heat-insulating nano-cellulose composite aerogel material.

The invention belongs to the field of synthesis of luminescent materials, and relates to a preparation method and application of a zero-dimensional manganese-based hybrid halide nanofiber membrane with reversible photoluminescence and radiation luminescence conversion. The synthetic route is as follows: preparing a precursor from 4-dimethylaminopyridine (DMAP) and hydrochloric acid, then synthesizing zero-dimensional organic-inorganic metal chloride with manganese chloride hydrate (MnCl2. 4H2O) and anhydrous manganese chloride (MnCl2), further mixing the zero-dimensional organic-inorganic metal chloride with polyvinylidene fluoride (PVDF), and performing electrostatic spinning to obtain a nanofiber film; compared with the prior art, the stimuli-responsive reversible PL switch flexible fiber membrane prepared by adopting an electrostatic spinning technology has excellent stability and PL switch performance, and can show efficient PL and RL switching under external stimuli. Meanwhile, the flexible nanofiber film produced by the method has the advantages of one-step synthesis, quick response, repeatability, good portability and low cost, so that the flexible nanofiber film becomes a new application of molecular-level dynamic photonic devices for data storage, information security, optical logic gates, flexible X-ray imaging and the like.

Provided are a preparation method of an ion catalyst material for PET chemical recycling and a PET chemical recycling method. The preparation method of an ion catalyst material for PET chemical recycling includes the following. A metal chloride is added to an alkylimidazole-chloride ionic liquid to form a bisalkylimidazole-metal tetrachloride ionic liquid that is grafted on a porous carrier.

The invention provides a preparation method and application of MAX phase derived polymetallic sulfide, and belongs to the field of lithium ion battery negative electrode material preparation. A MAX phase is used as a precursor, metal chlorides such as CuCl2, FeCl2 and CoCl2 are used as etching agents, K2S is used as a sulfur source, and etching in-situ vulcanization is performed under a NaCl / KCl molten salt system to obtain a series of multi-metal sulfide materials. When the prepared multi-metal sulfide material is used as a lithium ion battery negative electrode material, excellent cycle and rate performance is shown.

The present invention provides a sulfide-polymer composite solid electrolyte and a preparation method thereof, belonging to the field of batteries. In the present invention, lithium sulfide reacts with phosphorus pentasulfide to generate a partially crystallized sulfide network, and high-valent metal ions are doped to optimize the lattice structure, enhancing conductivity and chemical stability; the crystalline phase provides an efficient ion migration channel, and the amorphous region reduces the grain boundary effect and improves the conduction uniformity; a metal chloride and lithium fluoride coating layer is used to isolate moisture and oxygen, and polyaniline coating reduces the interfacial impedance and enhances the cycle stability. The crystallinity is reduced and the amorphous region is increased by sulfonated polyether ether ketone, providing a low-impedance path for lithium ions; the polyethylene glycol chain segment improves the flexibility and ion migration ability, and the three-dimensional network structure is formed by crosslinking to enhance the mechanical strength and interfacial stability. The inorganic phase and the polymer act synergistically to construct a bicontinuous ion conductive network to improve the comprehensive performance.

The invention discloses a sulfide solid electrolyte of a lithium ion battery, comprising: a sulfide solid electrolyte matrix comprising sulfur; the surface of the sulfide solid electrolyte matrix is coated with the coating layer, and the coating layer is formed by substitution reaction of metal chloride, 1-undecyl mercaptan and sulfur. The sulfide solid electrolyte disclosed by the invention is a sulfide solid electrolyte with high ionic conductivity and good interface stability at the same time. The invention also discloses a preparation method of the sulfide solid electrolyte, a composite sulfide solid electrolyte and a preparation method of the composite sulfide solid electrolyte.

The invention discloses a preparation method of a post-metallocene catalyst. The method comprises the following steps: by taking quinoline 2-formaldehyde and ortho-aminophenol as raw materials, carrying out reflux reaction on the raw materials and a first solvent to prepare a ligand; dispersing a metal chloride in a second solvent, adding a Grignard reagent, and carrying out a reaction at a low temperature to prepare a methylated metal reagent; and adding a ligand into the methylated metal reagent, reacting at room temperature for 10-12 hours, removing liquid in vacuum, adding part of the second solvent again, stirring, filtering after the product is dissolved, and recrystallizing the filtrate to obtain the product, the metallocene catalyst is obtained by firstly preparing the ligand, then preparing the methylated metal reagent, adding the ligand into the methylated metal reagent for reaction, then stirring by using the second solvent, filtering after the product is dissolved, and recrystallizing the filtrate, so that the operation steps are simple, and the preparation of the ligand does not need water-oxygen treatment operation, and is simple and easy to implement; the preparation cost of the post-metallocene catalyst is reduced, and the method is suitable for industrial large-scale production.

The invention discloses a non-aqua regia gold extraction agent and method for recovering precious metal from waste containing precious metal. The non-aqua regia gold extraction agent is composed of nitrate, metal chloride and weak acid, by precisely regulating and controlling the concentrations of nitrate, chloride ions and hydrogen ions in the non-aqua regia gold extraction agent, the precious metal in the waste containing the precious metal can be subjected to green, efficient and selective oxidation leaching under the normal temperature condition, the precious metal ions in the leaching solution are subjected to reduction operation, and therefore the recovery rate of the precious metal in the waste containing the precious metal is improved. And a pure noble metal product can be obtained. Compared with a traditional aqua regia method, the method has the advantages that strong acid reagents such as concentrated nitric acid and concentrated hydrochloric acid are not used, corrosion to equipment and operation risks are remarkably reduced, and secondary emission of harmful gas is avoided. The method has the remarkable advantages of being environmentally friendly, easy and convenient to operate, mild in reaction condition, low in equipment requirement, high in leaching rate and the like, is suitable for large-scale and industrial production, and has wide application prospects and commercial value in the field of precious metal recovery.

The invention belongs to the technical field of total heat exchange membranes for fresh air systems, and relates to a cleanable, efficient and environment-friendly total heat exchange membrane and a preparation method thereof. The total heat exchange membrane comprises a base membrane and a membrane casting layer compounded on the surface of the base membrane, the base membrane is a wet-process double-drawing polyethylene membrane, and the membrane casting solution comprises a high-molecular polymer and a moisture absorbent and can also comprise a modifier. The high-molecular polymer is one of polyvinyl alcohol, sodium alginate, chitosan, polyvinylpyrrolidone and polyurethane; the moisture absorbent is one of common metal chloride and glycerol; and the modifier is one of malic acid, calcium chloride and magnesium chloride. When the water resistance of the film is improved, the film has high moisture permeability and can be recycled; the total heat exchange membrane prepared by the method is simple in process, low in cost, good in moisture permeability and gas barrier property, and suitable for being used as a total heat exchanger of a fresh air system, and secondary pollution is avoided.

The invention relates to an ultra-small platinum-ruthenium-iron-cobalt-nickel-copper high-entropy alloy particle / carbon paper composite material and a preparation method and application thereof. Metal chloride and carbon paper serve as raw materials, the ultra-small platinum-ruthenium-iron-cobalt-nickel-copper high-entropy alloy particle / carbon paper composite material us-HEA / CFP is prepared through a solvothermal method and high-temperature thermal shock, and the preparation method comprises the following steps that a, a platinum-ruthenium-iron-cobalt-nickel-copper precursor / carbon paper is prepared through the solvothermal method; b, the precursor is subjected to high-temperature thermal shock to prepare us-HEA / CFP, the overpotentials under the current density of-100 mA / cm <-2 >,-500 mA / cm <-2 > and-1000 mA / cm <-2 > are only 31.4 mV, 69.2 mV and 102.5 mV respectively, and the Tafel slope is 28.9 mV dec-1. When the temperature is 60 DEG C, an anion exchange membrane electrolytic cell constructed by taking us-HEA / CFP as a cathode needs the voltage of 1.94 V to reach the industrial-grade current density of 1000 mA cm <-2 >, and the anion exchange membrane electrolytic cell can stably operate for 500 hours under the current density, so that the anion exchange membrane electrolytic cell shows great practical application potential. The method can be expanded to design of other high-entropy materials, and a new idea is provided for efficient preparation of an electrocatalyst with excellent performance.

The invention relates to a synthesis method of chlorine trifluoride, which comprises the following steps: S1, connecting a cold trap with a gas outlet of a metal pipeline of a reactor, adding a metal chloride into the reactor, with the addition amount of the metal chloride being two thirds of that of the reactor, and maintaining the pressure; s2, cooling to-100 DEG C to-60 DEG C by a cold trap; s3, the metal pipeline of the reactor is heated to 850-1000 DEG C; s4, starting to introduce fluorine gas, and stopping introducing the fluorine gas when the pressure reaches 3.5 MPa; s5, after reacting for 1-2 hours, opening an outlet valve of the reactor, and collecting through a cold trap; s6, after collection is completed, the temperature of the cold trap is increased to-20 DEG C to 0 DEG C, an emptying opening is opened, and the emptying opening is closed after 5-20 min. The raw materials are simple, and the conversion rate can be effectively improved.

The invention discloses a high-entropy metal sulfide nano material and a preparation method thereof, and relates to the field of high-entropy materials.Transition metal chlorate and sodium chloride are placed in a first reaction boat in the upstream area of a reaction container; placing the zinc sulfide nano-template in a second reaction boat in a downstream area of the reaction container; heating the reaction container to 500-525 DEG C at a first heating rate, keeping the temperature for 20-40 minutes, and transporting metal chloride gas volatilized by the eutectic effect of the precursor to a second reaction boat in a downstream area along with the dynamic airflow, so that the zinc sulfide nano-template reacts with the metal chloride gas; and cooling to room temperature at a second cooling rate, and collecting a solid product in the second reaction boat to obtain the high-entropy metal sulfide nano material. According to the method, the complex microstructure of the precursor template can be copied, and topological conversion is realized; and the chemical morphology, the components, the crystal structure and the like of the high-entropy nano material can be regulated and controlled.

To provide a formulation technique pertaining to an aqueous liquid formulation that contains brimonidine and / or salts thereof.SOLUTION: An aqueous liquid formulation containing brimonidine and / or salts thereof, a buffering agent and a metal chloride is capable of inhibiting adsorption of brimonidine and / or salts thereof to a filter when passed through the filter, and is capable of inhibiting decrease in the content of brimonidine and / or salts thereof in the aqueous liquid formulation even when contained in a container with a filter or when subjected to a sterilization step through filtering during production.SELECTED DRAWING: None

The application belongs to the technical field of biomedical application of nanomaterials, and discloses a magnetic graphene nanocapsule as well as a preparation method and application thereof. The application provides a magnetic graphene nanocapsule, wherein the magnetic graphene nanocapsule is of a core-shell structure, the core is a magnetic metal, and the shell layer is a magnetic graphene nanocapsule, compared with traditional magnetic metal oxides, the heat production capacity and acid resistance are significantly enhanced, and stable hyperthermia conditions can be provided in the stomach. The application further provides a preparation method of the magnetic graphene nanocapsule, wherein inexpensive and readily available raw materials such as metal chloride and nitrate are used, the synthesis conditions are simple, and the method is suitable for mass production. The obtained magnetic graphene nanocapsule can enter a specified site through oral administration, such a drug administration mode can avoid the problems of liver accumulation and side effects of nanoparticles after entering the blood, and potential toxicity of nanoparticles after entering the systemic circulation is avoided.

The invention belongs to the technical field of siloxane synthesis, and particularly relates to a synthesis process of 3H-heptamethyltrisiloxane. Comprising the following steps: adding methyl hydrogen dichlorosilane, hexamethyldisiloxane and metal chloride into a reaction kettle, carrying out temperature control reaction, and separating to obtain the product. According to the preparation method, metal chloride is taken as a catalyst, and controllable embedding of Si-H bonds and reutilization of the catalyst are realized through an activation-silicon increase reaction of methyl hydrogen dichlorosilane and hexamethyldisiloxane. Potential safety hazards such as acid water or hydrogen release in a traditional process are avoided, and the production efficiency and the safety coefficient are improved. In the raw materials, a Si-Cl bond of methyl hydrogen dichlorosilane is transferred to generate trimethylchlorosilane, and trimethylchlorosilane is used as a synthetic raw material of organic silicon products such as hexamethyldisiloxane and MQ silicon resin, so that the service life of the Si-Cl bond in the organic silicon industry is prolonged, and the production cost is optimized.

The invention provides a Fe-Co-Ni series nano-alloy and a preparation method and application thereof, and belongs to the technical field of functional materials. The alloy is prepared by the following steps of: weighing and proportioning 0.5 mmol of each element by taking chlorate or acetylacetonate or acetate of iron, cobalt, nickel, manganese, copper, zinc and the like with the purity of more than 99.5% and other metal chlorides which are rich in earth surface and economical and practical as precursors, putting the precursors into a pressure-resistant bottle, taking n-trioctylphosphine oxide (TOPO) as a ligand, taking ethanol and 1-octadecene (ODE) as a mixed solvent, and uniformly stirring to prepare the alloy. And synthesizing the hexagonal nano-alloy at low temperature by using a wet chemical method. The method can be used for synthesizing 3-10-element medium-entropy and high-entropy alloy, and has a wide application prospect. The synthesis is a precise process which is guided by an organic ligand, is coordinated by multiple metals and is subjected to nucleation-self-assembly-anisotropic growth.

The application discloses a kind of based on self-porous polymer's ammonia hydrogen separation membrane and preparation method thereof, comprising the following steps: S1, TTSBI-M is reacted with TFTPN at high temperature, and synthesis contains benzyl methyl self-porous polymer PIM-M;S2, after PIM-M is completely dissolved in chlorobenzene, bromine is added, and ammonia hydrogen separation membrane based on self-porous polymer is prepared by reaction;S3, PIM-Br is dissolved in organic solvent, and casting solution is obtained, which is dropped on super flat culture dish, and PIM-Br base film is obtained after solvent volatilization;S4, base film is soaked in polyamine solution, and the self-porous polymer membrane of amine crosslinking is obtained, then it is soaked in halogenated alkane solution to realize quaternary ammonium modification, and modified membrane is obtained;S5, modified membrane is soaked in metal chloride solution and chelated, then the membrane is taken out and washed with deionized water, and ammonia hydrogen separation membrane based on self-porous polymer is obtained.The self-porous polymer membrane prepared by the application has excellent ammonia hydrogen separation capacity, and also has excellent mechanical properties.

The invention relates to the technical field of medical materials, particularly discloses a photo-thermal biogel, and also discloses a preparation method of the photo-thermal biogel. The photo-thermal biogel provided by the invention is prepared from the following raw materials: amino-containing biomacromolecules, a bifunctional aldehyde cross-linking agent, photo-thermal nanoparticles and chlorinated metal salt. The photo-thermal biological gel provided by the invention can simultaneously realize multiple functions of synergistic hemostasis, photo-thermal adhesion, antibacterial protection, mechanical durability and the like. Moreover, the photo-thermal biogel provided by the invention can be compatible with a portable near-infrared light source, can be used in a simple and crude environment, does not need to depend on advanced operation infrastructures, and has the advantage of low cost.

This invention provides a liquid chlorine storage material for separating and storing chlorine from chlorine-containing gases. The material is a mixed ionic liquid composed of at least one organic salt and one additive, wherein the organic salt is selected from one or more quaternary ammonium salts, and the additive is a metal chloride. The chlorine storage material is liquid at 25°C and a pressure of 1000±100 hPa. This invention provides a storage medium with a high chlorine storage rate, high chlorine storage density, simple release conditions, and high chlorine purity. This storage medium effectively reduces the saturated vapor pressure of chlorine at room temperature, improving the safety of chlorine transportation and use.

The application discloses a method for producing ethanol by poplar enzymolysis fermentation, and adopts metal chloride and ethanol aqueous solution to pretreat poplar firstly, and then carries out simultaneous saccharification and fermentation to produce ethanol; the metal chloride is aluminum chloride and / or chromium chloride. After the poplar is pretreated by the method, the simultaneous saccharification and fermentation is carried out, when the substrate concentration of the poplar is 30%, the yield of glucose produced by poplar enzymolysis can reach 62.28 g / L; when the substrate concentration of the poplar is 32%, the yield of glucose produced by poplar enzymolysis can reach 64.85 g / L. The method can effectively remove lignin, improve the reaction activity of cellulase, effectively improve the efficiency of poplar enzymolysis fermentation, and improve the yield of ethanol.

The invention relates to the technical field of clean and efficient utilization of coal resources, in particular to a multi-field coupled high-chlorine coal efficient dechlorinating and upgrading method and a multi-field coupled high-chlorine coal efficient dechlorinating and upgrading system. The multi-field coupled high-chlorine coal efficient dechlorination upgrading method comprises the following steps: carrying out ultrasonic heating treatment on a crushed high-chlorine coal sample; reacting the high-chlorine coal sample subjected to ultrasonic heating treatment with a complexing agent to generate a chlorinated metal complex; adding a supercritical carbon dioxide extraction agent, dissolving the chlorinated metal complex in the supercritical carbon dioxide extraction agent to obtain a mixed solution, and filtering to obtain a dechlorinated coal sample; and carrying out reduced pressure treatment on the filtered mixed solution to obtain the chlorinated metal complex. According to the invention, high-chlorine coal realizes high-efficiency, low-cost and environment-friendly dechlorination.