333 results about "Adsorption method" patented technology

The invention discloses a vacuum adsorption device and an adsorption method, the device comprises a carrying table and a driving device, vacuum holes and sealing holes which are distributed in a staggered manner are formed in the surface of the carrying table, and a plurality of independently controlled vacuum areas are formed. Each area is provided with an independent vacuum pipeline, a pressure controller and a switch, and precise negative pressure regulation and control are achieved. The lifting sealing ring is arranged in the sealing hole, the height is adjusted through the driving device, and the position of the sealing ring and the warping state of the wafer are monitored in real time through the detection device. In the adsorption process, if warping exists, the height of the sealing ring is automatically adjusted, the wafer is flattened step by step in a subsection adsorption mode of subarea control, and global adsorption is started after the heights of all the sealing rings are consistent. According to the method, the problem that a traditional adsorption mode is poor in adaptability to large-warping wafers is effectively solved through the partition control and dynamic adjustment technology, the method has the advantages of being stable in adsorption, uniform in stress, low in breakage rate and the like, and the process compatibility and the production yield are remarkably improved.

The invention provides a method for detecting the porosity of in-situ dump-leached ore, and belongs to the technical field of ore porosity detection. The method comprises the following steps: taking an ore body on site, preparing a filling agent, performing vacuum gradient impregnation, curing, dissolving and separating the ore to obtain a pore model; melting and softening the pore model to obtain the pore volume in the ore, and finally obtaining the porosity of the ore; wherein nano SiO2 is added into the filler resin, and permeation of tiny pores is guaranteed based on the size effect and the interface optimization effect of a nano material; and through vacuum gradient impregnation, sufficient permeation of tiny pores is further ensured. According to the detection method, the limitation of a drainage method on ore pores containing water-soluble minerals is avoided; the problems that ore samples need to be collected and taken back to a laboratory to be detected in a mercury injection method, a gas adsorption method and the like, the ore body structure is damaged, and consumed time is long are solved. Detection can be carried out on site, ore permeability parameters are provided for the in-situ dump leaching process, and a real-time basis is provided for flow selection.

The unstacker comprises a feeding assembly, a lifting assembly, a positioning assembly and a discharging assembly, the feeding assembly is composed of a plurality of feeding supports distributed side by side, the lifting assembly is fixedly installed on one side of the feeding assembly, a motor frame is fixedly installed on one side of the top of the lifting assembly, the positioning assembly is fixedly installed on the top of the lifting assembly, and the discharging assembly is fixedly installed on the motor frame. The discharging assembly is fixedly installed on one side of the top of the lifting assembly. Stacked bagged materials can be driven to achieve feeding through lifting and stable traction of the supporting plate, conveying of each layer of materials during unstacking is facilitated, movement in the horizontal direction is achieved through the positioning assembly, accurate positioning can be achieved when the bagged materials are grabbed, bagged material suction is achieved through a negative pressure suction mode of a suction cup, and the bagged materials can be conveniently conveyed. The bagged materials are grabbed through the feeding assembly, heavy materials are lifted through the rotatable suction cup, meanwhile, the grabbed bagged materials are conveyed through the discharging assembly, meanwhile, it can be ensured that the conveying direction of the bagged materials is adjusted, and continuous unstacking of the bagged materials can be achieved.

The invention provides a cyanide breaking agent and method for treating alkaline cyanide-containing wastewater. The cyanide breaking agent is a combination of an oxidizing agent, a Fe3O4 ZIF-8 core-shell magnetic catalyst and PDMS-hydrophobic silicon dioxide composite liquid. Through a catalytic oxidation-adsorption integrated method, the reaction path is shortened, efficient removal of cyanide is realized, the effluent is far lower than 0.5 mg / L specified by the national standard, a recyclable product is obtained, and the risk of secondary pollution caused by HCN or heavy metal precipitation is reduced; non-photocatalytic nanoscale Fe3O4-ZIF-8 core-shell magnetic catalyst particles are combined with PDMS-hydrophobic silicon dioxide composite liquid to cooperate with an oxidizing agent, the process that cyanide is converted into non-toxic products through integrated two-stage oxidation is promoted, and meanwhile the content of ammonia nitrogen in wastewater is further reduced by combining modified activated carbon.

The invention relates to the technical field of heavy metal recovery, in particular to a method for recovering heavy metal from metal waste. Comprising the following steps: preparing silicon-tungsten composite acid salt; preparing heteropolyacid powder; preparing a resin heteropolyacid composite material; heavy metals are recovered from metal wastes by a resin adsorption method. The silicon-tungsten composite acid salt is prepared under mild conditions through reaction of sodium metasilicate, sodium tungstate and potassium chloride, the operation is simple, the conditions are easy to control, the silicon-tungsten composite acid salt has rich active sites and a large specific surface area, the surface of the silicon-tungsten composite acid salt carries negative charges, and the surface of the silicon-tungsten composite acid salt is not prone to damage. Compared with a traditional chemical precipitation method, the method for extracting the heavy metal by using the silicon-tungsten composite acid salt does not need to add a large number of chemical reagents, and secondary pollution is reduced.

The invention provides a self-adaptive adsorption platform and a negative pressure adsorption method, and the self-adaptive adsorption platform comprises a product bearing module which comprises at least one adsorption area which can be independently controlled, the adsorption area is provided with a plurality of adsorption units, and the adsorption units are switched between a conduction state and a closed state according to air pressure changes; the negative pressure generation module comprises negative pressure cavities and negative pressure sources which correspond to the adsorption areas, the negative pressure cavities are connected with the negative pressure sources through first gas paths, and first control valves are arranged on the first gas paths; when the first control valve is opened, the adsorption unit covered by the product is in a conducting state under the action of negative pressure and adsorbs the product; and the adsorption unit which is not covered by the product is switched to a closed state under the action of negative pressure to block the communication with the outside. Effective adsorption areas can be dynamically divided according to the product size, and ineffective energy consumption caused by traditional global adsorption is avoided; the adsorption units which are not covered with the products are rapidly closed under the action of negative pressure, external air path communication is blocked, and negative pressure leakage is reduced.

The invention relates to the technical field of biological detection, and provides a kit and a method for rapidly detecting a platelet antibody by utilizing a phytolectin solid-phase adsorption method. The detection kit provided by the invention comprises a reaction plate which is coated with phytolectin and adsorbs platelets. According to the method, the platelet of multiple persons is adsorbed by utilizing the non-specific adsorption capacity of the phytolectin, and the adsorbed platelet is directly freeze-dried to the bottom of a microwell plate. During use, a detection result can be obtained only by adding detected plasma / serum into the reaction plate for incubation and then adding an anti-human globule reagent and indicating red blood cells, so that intermediate links of detection are reduced, and standardization and automation of detection are facilitated.

The invention discloses a detachable soft gasket and method for thin plate grinding deformation control. The soft gasket structurally comprises a friction adsorption enhancement layer, a micropore vibration reduction layer and an elastic supporting layer which are detachably connected in sequence from top to bottom. In the soft gasket, the elastic supporting layer provides flexible buffering, the micropore vibration reduction layer absorbs machining vibration through a closed-cell micropore structure, the friction adsorption enhancement layer enhances the adsorption force and stability through non-uniform waveform raised grains and conical grooves, the bottom of the friction adsorption enhancement layer is designed in a sealed mode, grinding fluid permeation is effectively prevented, and all the layers cooperate with one another to improve the machining precision. The soft gasket is designed to be of a multi-layer structure, machining deformation is effectively reduced by providing a positioning reference, and the problems of initial deformation, end face jumping and planeness out-of-tolerance of the thin plate caused by a traditional rigid fixing or adsorption mode can be remarkably solved.

The invention discloses an evanescent mode casting positioning device capable of controlling the size A. The evanescent mode casting positioning device comprises a mounting seat, the top of the mounting seat is provided with an adaptive mechanism for assisting mounting, and the mounting seat is internally provided with a positioning mechanism for positioning the die body; through cooperative arrangement of the adaptation mechanism, the positioning mechanism and the inner clamping mechanism, positioning is not limited by the density of foam any more, clamping jaws on the two sides of the A-size tool are opened to make contact with a white mold, negative pressure is generated through a vacuum pump, the white mold is adsorbed to the clamping jaws, then the A-size white mold is pulled back to a standard position, and positioning is achieved. The device is more accurate and stable, operation is more convenient, time is saved, according to cooperation between the adaptation mechanism and the positioning mechanism, positioning work of the placed white mold can be achieved, the inner clamping mechanism can clamp the white mold inwards from the inner side wall, the white mold can be driven to be pulled back to the preset position in a pneumatic negative pressure adsorption mode, and the labor intensity of workers is lowered. Therefore, the accuracy is ensured.

The utility model provides a BOG (Boil Off Gas) dehydrogenation system, which belongs to the technical field of gas separation and comprises a dehydrogenation device, the dehydrogenation device is connected with a mixed gas source unit and a circulating heat exchange medium unit, and one end, far away from the mixed gas source unit, of the dehydrogenation device is connected with a dehydrogenation mixed gas unit; the dehydrogenation device comprises a heat exchange box body, a plurality of hydrogen storage alloy tank bodies are arranged in the heat exchange box body, each hydrogen storage alloy tank body is connected with a mixed gas inlet and a mixed gas outlet, the mixed gas inlet is connected with a mixed gas source unit, and the mixed gas outlet is connected with a dehydrogenation mixed gas unit; the BOG gas dehydrogenation system further comprises a control system, and the control system is connected with the dehydrogenation device. According to the BOG dehydrogenation system disclosed by the utility model, the purpose of hydrogen separation is achieved by adopting reversible reaction of hydrogen storage alloy and hydrogen adsorption, the process is carried out under the conditions of normal temperature and low pressure, and compared with the existing methods of low-temperature separation, high-pressure adsorption and the like, the energy consumption is greatly reduced, and energy conservation and emission reduction are facilitated.

The present invention discloses a method for adsorbing radioactive iodide ions in radioactive wastewater, which includes the following process: adding silver copper oxide to the radioactive wastewater, and the iodide ions in the radioactive wastewater react with the silver copper oxide, so that the concentration of iodide ions in the radioactive wastewater is reduced. The adsorption of radioactive iodide ions in radioactive wastewater by the silver copper oxide of the present invention belongs to chemical adsorption, which has the characteristics of fast adsorption speed, high adsorption efficiency and adsorption capacity, the adsorbed product is not easy to desorb, is easy to solidify and dispose, is convenient for recycling, is convenient to use and is not easily affected by interfering ions and pH. The silver copper oxide has a strong selective adsorption effect on iodide ions in the wastewater environment of long half-life radioactive element iodine, and can effectively improve the radioactive pollution of iodine in the water environment, and solve the main problems of spent fuel reprocessing and radioactive water pollution.

The invention relates to the technical field of medical instruments, and discloses a medical X-ray protection device which comprises a base, a frame arranged at the top of the base, two sliding rods arranged on the front face of the frame, two shielding plates arranged on the outer sides of the sliding rods and fixing assemblies arranged on the back faces of the shielding plates. The fixing assembly specifically comprises a sliding base arranged on the back face of the shielding plate and a sliding block arranged in the sliding base. According to the medical X-ray protection device, by arranging the adjusting assembly, when the position of the shielding plate needs to be adjusted, the control plate is pressed downwards, so that the shielding plate can be freely moved to slide on the sliding rod, the control plate is loosened after the shielding plate moves to the corresponding position, the adsorption pad is tightly adsorbed to the outer side of the sliding rod, the shielding plate cannot move any more, and positioning is completed; according to the method, control is convenient, rapid adjustment can be achieved, one-hand operation can be achieved, meanwhile, a negative pressure adsorption method is adopted, and the effective fixing effect can be maintained all the time before the communicating groove is aged.

The invention relates to the technical field of agricultural biological prevention and control, and discloses a biological prevention and control complex microbial inoculant and application thereof.The biological prevention and control complex microbial inoculant is prepared by the steps that natural bio-based compounds vanillin and vanillic acid serve as main raw materials, and a biodegradable trialdehyde monomer is designed and synthesized; a biodegradable trialdehyde monomer and p-phenylenediamine are used as organic building units to assemble and form an ordered porous crystal structure, and the biodegradable COF material is obtained; the preparation method comprises the following steps: loading a basic complex microbial inoculant consisting of bacillus thuringiensis, bacillus subtilis and streptomyces willerigensis on a biodegradable COF material by adopting an impregnation adsorption method, and coating the surface of the biodegradable COF material with tetraethylenepentamine and tannic acid through copolymerization to form a degradable polytannic acid layer, so as to prepare the slow-release complex microbial inoculant, and the effective active components of the slow-release complex microbial inoculant can be slowly released; the lasting period and the utilization rate of the composite microbial agent can be remarkably improved, and the composite microbial agent shows an obvious inhibition effect on pathogenic bacteria such as fusarium oxysporum and botrytis cinerea and can be applied to prevention and treatment of plant diseases.

The application provides a preparation method of a zeolite adsorbent, comprising the following steps: a) treating a zeolite in an oxalic acid solution, and drying to obtain a zeolite precursor; b) treating the zeolite precursor obtained in the step a) in an ammonium fluoride solution, and drying to obtain a zeolite adsorbent. The application also provides a zeolite adsorbent and an ammonia adsorption method. The preparation method provided by the application is mild and controllable in structure adjustment, and the zeolite is post-treated to make the zeolite framework selectively rearrange or slightly adjust in local areas, so that mesoporous channels with appropriate sizes and good connectivity are generated. The preparation method provided by the application can introduce mesopores while maintaining the integrity of the microporous framework structure as much as possible, avoids damage to the micropores or collapse of the framework, and has the characteristics of simple process route, wide range of control parameters, good repeatability and suitability for large-scale preparation.

The invention discloses a nitrate-containing waste liquid treatment method, which comprises: (1) waste acid treatment: diluting waste acid in a neutralization reaction kettle, adding ammonia water while stirring, controlling the temperature to be 70-95 DEG C, continuously adding ammonia water to adjust the pH value of the solution to be 7.5-10.0 after the neutralization is completed, and carrying out stirring distillation to obtain an ammonium sulfate nitrate aqueous solution or an ammonium sulfate nitrate crystal; (2) wastewater treatment: 1) wastewater steam stripping: transferring nitrate wastewater into a steam stripping kettle, adding a pH regulator to regulate the pH value to be 10-13, heating the steam stripping kettle to a boiling state by using steam, distilling, condensing and recovering nitrate in the wastewater; and 2) oxidation treatment: after steam stripping is finished, hydrogen peroxide is added into the steam stripping kettle in a boiling state, stirring reaction is performed, and the reacted wastewater can be discharged after reaching the standard. Compared with a traditional Fenton method and an activated carbon adsorption method, the method has the advantages that secondary pollutants Fe (OH) 3 generated by treatment and saturated activated carbon after adsorption can be avoided, harsh reaction conditions such as light, electricity and microwaves can be avoided, the operation cost is reduced, the method is safe, environment-friendly and free of secondary pollution, the nitrate removal rate can reach 100%, and the method is suitable for industrial production. The COD (Chemical Oxygen Demand) of the treated wastewater is less than 100mg / L, and the wastewater can reach the direct discharge standard.

The application belongs to the technical field of solid waste resource utilization, and specifically discloses a method and device for preparing silicon-calcium aggregate, sulfuric acid and CO2 by phosphogypsum oxygen-rich high-temperature decomposition. The method uses the adsorption method to obtain pure nitrogen products and oxygen-rich combustion-supporting gas, and provides different reaction temperatures and reaction atmospheres for different reaction stages of the rotary kiln reactor through the multi-point combustion mode, thereby ensuring the controllable high-temperature environment and atmosphere in the kiln. The method improves the combustion efficiency, greatly reduces the amount of flue gas after decomposition, effectively improves the concentration of SO2 in the flue gas and the efficiency of the subsequent sulfuric acid preparation system, and realizes CO2 emission reduction and resource utilization by using the CO2-rich tail gas of the sulfuric acid preparation system for adsorption recovery. The application also provides a device for realizing the method, which combines gas adsorption, oxygen-rich combustion and rotary kiln multi-point combustion equipment, thereby ensuring the effective realization of the process.

The application provides a preparation method of a two-dimensional layered silicate mineral film treated by a reducing modifier, which comprises the following steps: firstly, organic modification of a two-dimensional layered silicate mineral by a reducing ionic liquid; then, loading of the reducing modifier into the interlayer of the two-dimensional layered silicate mineral; and finally, construction of a two-dimensional channel by vacuum filtration to prepare a film with a thickness of 5-20 microns. The two-dimensional layered silicate mineral film obtained by the method has a large surface area and can effectively treat heavy metal Cr(VI). The construction of the two-dimensional channel provides a limited space for the reducing modifier to prevent oxidation and provides abundant sites for the oxidation-reduction reaction in the nanopore channel, and solves the problems of desorption difficulty and secondary pollution caused by the traditional adsorption method for treating heavy metals.

A silica particle includes: a quaternary ammonium salt, in which the following expressions are satisfied, 0.90≤FBEFORE / FAFTER≤1.10, and 5≤FSINTERING / FBEFORE≤20, in which FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method, FAFTER represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles after washing, which is obtained from the pore distribution curve in the nitrogen gas adsorption method, and FSINTERING represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from the pore distribution curve in the nitrogen gas adsorption method.

To provide a hydrocarbon adsorbent having a high hydrocarbon desorption start temperature, or to provide a hydrocarbon adsorption method that uses the hydrocarbon adsorbent.SOLUTION: Used is a hydrocarbon adsorbent containing an alkali metal and zeolite having a ring structure made up of 10 or more rings. The content of the alkali metal is 1 to 40 mass% with respect to 100 mass% of the hydrocarbon adsorbent, the content of the zeolite having the ring structure made up of 10 or more rings is 99 to 60 mass% with respect to 100 mass% of the hydrocarbon adsorbent, and at least a portion of the alkali metal is in an ion exchangeable state.SELECTED DRAWING: Figure 1

The invention discloses an adsorption device and a workpiece adsorption method, and relates to the technical field of workpiece adsorption. The adsorption device comprises: an adsorption member; a plurality of gas path channels; m negative pressure generating units; the air path switching module can be used for selectively communicating any air path channel with the air suction port of the corresponding negative pressure generation unit or communicating with the atmosphere or communicating with the closed pipeline; the limit negative pressure absolute value of the Nth negative pressure generating unit is smaller than that of the (N + 1) th negative pressure generating unit; when the air suction port of the Pth negative pressure generation unit is communicated with the air channel, the air channel corresponding to the (P-1) th negative pressure generation unit is communicated with the closed pipeline; and when the air channel corresponding to the (P-1) th negative pressure generation unit is communicated with the closed pipeline, the (P-1) th negative pressure generation unit stops working. The adsorption device is used for avoiding the heat accumulation phenomenon of the negative pressure generation unit on the premise that the adsorption pressure is guaranteed, the service life of the negative pressure generation unit is prolonged, and meanwhile the applicability of the adsorption device is improved.

The application discloses a kind of metal organic framework-based biological trickling filter fillings, including soluble metal salt, organic ligand and binder.It also includes preparation method, including soluble metal salt is mixed with organic ligand in solvent, heating reaction, obtain metal organic framework material;Metal organic framework material is mixed with binder granulation, obtain metal organic framework-based biological trickling filter fillings.The preparation method of the biological trickling filter fillings is simple, structural performance is stable, with great specific surface area and strong biological adsorption capacity, sulfur-containing malodorous waste gas has very good adsorption effect at the same time, degradation efficiency is higher, can effectively make adsorption method and biological method be combined, and play the advantages of two, compared with prior art, the removal rate of hydrogen sulfide, organic sulfide, benzene series in sulfur-containing malodorous waste gas can reach 99.5% in the application.

The scheme discloses a heavy metal copper adsorption method in the technical field of heavy metal adsorption, which comprises the following steps: using a modified adsorbent to adsorb heavy metal copper; and the preparation of the modified adsorbent comprises the following steps: alkalinization, oxidation, modification, crosslinking and exchange of distiller's grains to increase groups. The modified adsorbent prepared by the method has the advantages of high adsorption capacity, high adsorption efficiency and strong reusability.

The invention discloses an adsorption device, an adsorption method and a maintenance method of the adsorption device, and relates to the technical field of adsorption, the adsorption device comprises an adsorption execution unit, an adsorption control unit and an adsorption management and control unit, and the adsorption execution unit comprises an adsorption part and a pressure detection part which are connected; the adsorption control unit comprises an industrial control part, a control part, a data acquisition module and a negative pressure adjusting module which are connected with one another; the adsorption management and control unit is connected with the industrial control and comprises a process parameter library of the workpiece; when the adsorption part adsorbs a workpiece, the pressure detection part detects adsorption pressure data of the adsorption part, the data acquisition module acquires the adsorption pressure data of the adsorption part and transmits the adsorption pressure data to the control part, and the industrial control part calls process parameters and transmits the process parameters to the control part; the control piece controls the negative pressure adjusting module to adjust the adsorption pressure of the adsorption piece according to the adsorption pressure data of the adsorption piece and the process parameters of the workpiece; therefore, the situation that the workpieces are difficult to release due to too large adsorption pressure and are traced or damaged is avoided, and the workpieces are prevented from falling off and being damaged due to too small adsorption pressure.

The present invention relates to the technical field of SMC molding compound production, and specifically, to an automatic cutting device and a cutting process for SMC molding compound production. In this automatic cutting device and the cutting process for SMC molding compound production, a side control mechanism on the side end of the tool body can adhere and adsorb the dust generated during the cutting process while the tool body is moving for cutting. Notably, timely adsorption during the cutting process can significantly improve the dust adsorption effect. This is because during the cutting process, the temperature at the cutting seam of the molding compound body will increase due to cutting, and the dust generated at this time is more easily adhered and adsorbed. At the same time, this adsorption method will not cause additional damage to the surface of the sheet-shaped molding compound body.

The utility model discloses a special equipment installation tool, and belongs to the technical field of special installation tools. A special equipment installation tool comprises an installation box and further comprises a first installation block fixedly installed on the installation box, an installation rod is installed on the first installation block in a sliding mode, a groove hole is formed in the end of the installation rod, and a suction cup is fixedly connected to the installation rod; the negative pressure assembly is arranged in the mounting box, and the air suction end of the negative pressure assembly is communicated with the slotted hole through a connecting assembly; the trepanning assembly is arranged on the mounting box; suction force generated by the negative pressure assembly is utilized, the drill bit is tightly adsorbed on the smooth metal surface of the special equipment through the suction cup, the adsorption mode is firm and reliable, deviation of the drill bit in the punching process can be effectively limited, it is guaranteed that the drill bit is perpendicular to the surface of the equipment, and meanwhile the drilling efficiency is improved. And due to negative pressure adsorption, the sliding problem caused by the smooth surface of the equipment is also reduced, so that high-precision and stable drilling operation is realized.

The invention discloses an environment-friendly sewage treatment device which is characterized in that a sewage tank, a mixing tank, a filter pressing device, an oxidation disinfection tank, a catalytic reaction tank, an adsorption tank and a water return tank are arranged in a shell from top to bottom, wastewater in the sewage tank is filtered by a barrel-shaped sand filter screen and then enters the mixing tank to be mixed with liquid medicine sprayed by a spraying device, and then the wastewater enters the filter pressing device; water is separated from precipitated impurities, then enters the oxidation disinfection tank to be disinfected by ozone, then enters the catalytic reaction tank, is added with a catalyst to accelerate an ozone oxidation disinfection reaction, and then enters the adsorption tank to be subjected to final adsorption treatment, so that wastewater treatment is completed; organic pollutants are converted into harmless gas products (CO2), liquid products (water) and solid sludge rich in organic matters; and carrying out solid-liquid separation on the redundant sludge in the filter pressing device under the filter pressing action, and sterilizing and killing bacteria and viruses by using ozone or chlorine. Finally, residual pollutants in water are removed through an activated carbon adsorption method and the like, and then treated water is fed into a reclaimed water channel to be used as circulating water.

The invention relates to a method for improving the catalytic performance of cobalt phthalocyanine in electrocatalysis of carbon dioxide reduction through a molecular co-adsorption strategy, in particular to an efficient electrocatalysis carbon dioxide reduction system formed by co-adsorbing functional molecules melamine and cobalt phthalocyanine on the surface of a multi-walled carbon nanotube through pi-pi interaction, and belongs to the technical field of catalytic energy. According to the invention, cobalt phthalocyanine (CoPc) and melamine (MLA) are used, and CoPc and MLA are co-adsorbed on the surface of a multi-walled carbon nanotube (MWCNT) through a method of co-adsorption in a solution, so that the MWCNT-coated CoPc-MLA catalyst is formed. In the reaction of electrocatalytically reducing carbon dioxide into carbon monoxide, the adsorption of MLA molecules can regulate and control the electronic structure of the Co center, so that the Faraday efficiency of CO is improved. And the Faraday efficiency and the current density are remarkably improved under different overpotentials. The smooth implementation of the patent provides a universal, simple, convenient and efficient strategy for regulating and improving the Faraday efficiency (FE) of reducing carbon dioxide into carbon monoxide through electro-catalysis, solves the problem of unstable structure of the conventional system, and provides greater possibility for industrialization in the field of electro-catalysis carbon dioxide reduction.

Provided are: particles of a recycled polycarbonate resin which are characterized by having an oligomer content of 1.4% or less and a molecular weight distribution (Mw / Mn) of 2.3 or less, both determined by gel permeation chromatography (GPC); or particles of a recycled polycarbonate resin which are characterized by having an oligomer content of 0.8% or less and a molecular weight distribution (Mw / Mn) of 2.3 or less, both determined by gel permeation chromatography (GPC), and having a specific surface area of 0.05-1.2 g / cm3 as determined by a gas adsorption method. The particles of a recycled polycarbonate resin have a feature of having excellent impact resistance, heat resistance (hue after molding), and transparency.

The application provides an organic matter desorption and adsorption characteristic measuring device and an automatic calibration method thereof, and belongs to the technical field of measurement. The organic matter desorption and adsorption characteristic measuring device has a simulation calibration device. The simulation calibration device has an environment cabin. The environment cabin is additionally provided with a control unit, a temperature adjusting unit, a temperature sensor, a humidity adjusting unit, a humidity sensor, an air pressure adjusting unit, an air pressure sensor, a communication unit, a sample bearing unit and a weighing unit. The sample bearing unit is composed of a stator and a rotor. The stator is a concave disc with a notch. The rotor is a toothed gear wheel. The use method of the device mainly includes the following steps: a parameter setting stage, a pre-balancing stage, a tare weight removing stage, a reference weighing stage, a measuring stage, a dynamic balancing stage, a cycle desorption stage, a cycle adsorption stage and a calibration stage. The problems that the current organic matter desorption and adsorption method is complicated to operate and has a large error can be solved.

This invention belongs to the technical field of gas purification equipment, specifically relating to a molecular sieve adsorption tower for CO2 adsorption. The tower includes a tower body, within which, from the inside out, are arranged a central air channel, a molecular sieve layer, an alumina layer, and an outer air channel. A pressing mechanism is provided at the top of the tower body for pressing the molecular sieve layer and the alumina layer respectively. The pressing mechanism includes a drive plate that can move up and down along the top of the tower body. Below the drive plate is an inner pressing structure for pressing the molecular sieve layer, and outside the inner pressing structure is an outer pressing structure for pressing the alumina layer. As the drive plate descends, the inner and outer pressing structures simultaneously press the molecular sieve layer and the alumina layer respectively. This invention provides a molecular sieve adsorption tower for CO2 adsorption capable of separately pressing the sedimentation of the alumina layer and the molecular sieve layer.