32results about How to "High microporous content" patented technology

The present invention is biohaydite filter material and its preparation process and belongs to the field of water treating engineering technology. The biohaydite filter material is prepared with shale 30-40 wt%, fly ash 30-45 wt%, sludge 10-20 wt%, pore creating agent 3-8 wt% and adhesive 0.5-2 wt%. The preparation process includes the steps of mixing material, forming, stoving, roasting, sintering and modifying. The preparation process has great amount of industrial waste utilized and low power consumption, may have microbes immobilized on its surface for biodegradation to result in raised organic matter degrading capacity, and may have its surface modified chemically for positively charging and hydroxylating favorable to eliminate natural organic matter from raw water.

The invention provides a preparation method for an activated carbon material. The preparation method comprises the following steps: 1) taking an activator aqueous solution, adding ion exchange resin and stirring and mixing the mixture for ion exchange; 2) washing, filtering and drying the obtained mixture to obtain the required resin; 3) optional one step: a, carbonizing the obtained resin in an N2 atmosphere; b, after pre-oxidizing the obtained resin in air, carbonizing the resin in the N2 atmosphere; and 4) washing and drying the obtained carbon material to obtain the required activated carbon material. The invention further discloses an activated carbon material by adopting the method and application thereof. According to the activated carbon material and the application thereof provided by the invention, the activator can be uniformly dispersed and the carbon material is activated by alkali metal ions at a high temperature. The prepared activated carbon material has good application potential in adsorbing carbon dioxide and phenol.

The invention discloses a bobbin type device for degrading triclocarban (TCC) in water by virtue of dielectric barrier discharge coordinated with activated carbon fiber and a method of the device. The device comprises a cylindrical reactor, a water distributing groove communicated on the upper part of the cylindrical reactor, a circulating buffer container and a rod-like high voltage electrode and a grounding electrode which are respectively connected with the positive and negative electrodes of an alternating current high voltage power supply, wherein the rod-like high voltage electrode is arranged in the cylindrical reactor while the grounding electrode covers the outer wall of the cylindrical reactor; activated carbon fiber layers are fixedly arranged on the inner walls of the cylindrical reactor; porous baffle plates are arranged on the surfaces of the activated carbon fiber layers; the circulating buffer container is respectively communicated with a waste water inlet formed on the side wall of the water distributing groove and a waste water outlet formed in the bottom of the cylindrical reactor to form a waste water circulating pipeline. The device is simple in design and low in equipment investment, the degrading efficiency can be improved by fully utilizing ozone generated by catalysis of the activated carbon fiber, and moreover, regeneration of the activated carbon fiber is realized, so that the device can be applied to treating organic waste water which is difficult to be biochemically degraded.

The invention relates to micropore carbofrax fiber and a process for preparation. Micropore carbofrax fiber is characterized in that the content of Si is 40-65 wt%, the content of C is 25-45 wt%, residual material is O, micropore carbofrax fiber takes continuous fibrous shape, the volume of micropore (pore diameter <= 2nm) accounts for more than 85 vol% of total pore volume, average pore size is 1.30-2.00nm, and specific surface area is 1100-2100m 2 / g. The process for preparation is characterized in that carbofrax fiber which is rich with C is firstly prepared by blending mixing, non-melting and cracking through poly carbon silicon alky and carbonaceous high polymer, then micropore carbofrax fiber is obtained through activating carbon removing technology. The volume of micropore of micropore carbofrax fiber of the invention has high content, and pore diameter is stable and hard to collapse, and has high specific surface area, high thermally insulating property and good oxidation resistance property, and the invention has good application prospect in the field of environmental control, energy storage, medical health and the like.

The invention discloses a preparation method and application of hypercrosslinked resin with controllable polarity and pore structure. The preparation method of the hypercrosslinked resin comprises the following steps: taking dimethyl acrylate as a crosslinking agent, taking 4-vinyl benzyl chloride as a monomer, carrying out suspension polymerization in the presence of a pore-foaming agent, a dispersant and an initiator to obtain precursor resin; and carrying out Friedel-Crafts reaction on the precursor resin under the catalytic action of lewis acid to obtain the hypercrosslinked resin. By regulating the mass ratio of the crosslinking agent to the monomer, the polarity and the pore structure of the hypercrosslinked resin can be controlled within a certain range; meanwhile, the polarity and the pore structure of the hypercrosslinked resin can be regulated within a proper range; the hypercrosslinked resin can be used for selectively adsorbing polar micromolecule aromatic organic compounds and has a wide application prospect; in addition, the preparation method of the hypercrosslinked resin is simple and is low in cost; the prepared hypercrosslinked resin is excellent in dynamic properties and high in reusability, and is suitable for industrial production.

The invention relates to a preparation method of a carbon-based mercury-removing absorbent. The preparation method includes the steps of A), mixing fly ash with alkaline liquid, and etching to obtain etched fly ash; B), mixing the etched fly ash with metal halide and alkali under an inert gas environment, and activating to obtain activated fly ash, wherein activating temperature is 700-800 DEG C and activating time is 90-120 minutes; C), mixing the activated fly ash with a metal halide solution, and modifying to obtain the carbon-based mercury-removing absorbent. The preparation method has the advantages that the fly ash is subjected to alkaline liquid etching first, the alkali is allowed to react with the carbon of the fly ash, and a large amount of pores exist at etched positions; the specific surface area, micropore contents and functional groups of the fly ash are increased to a large extent by the activating; the surface and inside of the fly ash carry halogen elements through the modification by the metal halide solution, and the mercury-removing ability of the fly ash is further increased.

The invention belongs to the technical field of modification of activated carbon and in particular relates to a preparation method of hydrophilic activated carbon. The preparation method comprises thefollowing steps: step 1, adding sodium polyacrylate into propylene glycol; mechanically stirring until sodium polyacrylate is completely dissolved, so as to obtain a sodium polyacrylate alcohol solution; step 2, adding the activated carbon into the sodium polyacrylate alcohol solution; adding a dispersant and stirring to form stable suspension liquid; step 3, sealing the suspension liquid and stirring and reacting for 2 to 4h; then decompressing and distilling to react for 2 to 4h, so as to obtain pre-prepared activated carbon; step 4, putting the pre-prepared activated carbon into a drying oven and drying in vacuum to obtain the hydrophilic activated carbon. According to the preparation method provided by the invention, a polyacrylate radical is grafted in an activated carbon framework and hydrophilic modification of the activated carbon can be formed; a polyacrylate-activated carbon dual water absorption effect is formed and the hydrophilic performance of the modified activated carbon is greatly improved.

The invention discloses hydrophilic active carbon modified by sodium acetate and a preparation method thereof. The hydrophilic active carbon is formed by loading sodium acetate on the surface of the carbon framework of active carbon. The preparation method comprises the following steps of: sequentially carrying out high-temperature treatment on an active carbon raw material, soaking in a sodium hydroxide solution, drying, activating, soaking in ethyl acetate and carrying out esterolytic reaction, nitrogen purging desorption and vacuum desorption to obtain the hydrophilic active carbon. The preparation method disclosed by the invention has the advantages of easiness for operation and low cost; the prepared hydrophilic active carbon has the advantages of stability in structure, large specific area, less carbon loss, high adsorption capacity and large volume on water vapors, stability in adsorption property and good reusability.

The invention discloses a silica gel preparation method and silica gel obtained by the method, and relates to the technical field of inorganic silica gels. The preparation method sequentially comprises glue preparing, aging, glue cutting, water washing, and drying, wherein washing is performed with magnetized water in the water washing step, the water washing temperature is 20-80 DEG C, and the water washing end point is the rubber particle conductivity of less than 0.5 mS / cm. According to the present invention, the water washing is performed with magnetized water during the preparation of thesilica gel, and the water washing time is shortened to below 40 h so as to save the water washing time of the silica gel and improve the production efficiency of the silica gel; the magnetized waterhas high magnetic property, and can quickly wash out the salt ions in the silica gel so as to reduce the consumption of the magnetized water and reduce the production cost; the silica gel has the specific surface area of 300-800 m<2> / g and the pore volume of 0.4-1.0 mL / g, such that the fine pore channel structure inside the silica gel is protected at a maximum, and the protection of the micro-pores is increased; and the preparation method has good economic benefits, and further has a certain social benefit.

The present invention relates to a porous carbon material SO2 electrochemical oxidation catalyst, a preparation method and applications thereof, specifically to a loose porous metal-free carbon material catalyst obtained by carrying out pretreatment, doping and two heat treatments on an amorphous carbon material. According to the present invention, through a constant potential process and an electrokinetic potential process, the SO2 electrochemical oxidation ability of the prepared catalyst and the in situ response of the catalyst to SO2 during the external applying of the potential are tested, and the testing results show that the catalyst has a significant desulfurization effect; the micro-pore area of the porous carbon material catalyst prepared from the amorphous carbon material is increased by 33-40%, the pore volume of the micro-pores is increased by 28-30%, the area of the outer pore is increased by 55-60%, the total specific surface area is increased by 48-50%, a variety of elements are doped on the surface of the porous carbon material catalyst, and a plurality of functional groups are modified on the surface of the porous carbon material catalyst; and the SO2 electrochemical oxidation effect of the catalyst is good at the constant potential, and the catalyst has great application potential in the gas-phase and liquid-phase SO2 electrochemical oxidation field, and provides the positive significance for the solving of the increasingly severe SO2 pollution problem.

The invention discloses a carbon preparation process based on constant-temperature carbonization. The process includes the following steps: S1, crushing a material; S2, performing feeding; S3, performing drying; S4, performing intermediate feeding; S5, performing carbonization; and S6, discharging carbon. The process uses the constant-temperature carbonization manner to prepare the carbon, and carbonization of wood in a carbonization device does not use open-flame carbonization; and combustible gas is generated when the wood in the carbonization device is carbonized, the combustible gas returns to a combustion system through a pipeline for combustion, the combustion system can supply heat to a drying device and the carbonization device through a pipeline, so that an energy recycling systemis formed.

The invention provides a catalyst for treating wastewater as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing active metal-loaded active carbon; then uniformly mixing the modified silica-alumina, organic fibers, a binder and an acid solution, then adding the active metal-loaded active carbon, forming, drying and roasting to obtain a catalyst precursor; and further treating with an organic solvent and a caustic soda solution, washing, drying and roasting to obtain the catalyst. The catalyst for treating wastewater has a stepped pore size distribution through pore channel structure, and is beneficial to diffusion and adsorption of organic matters in pore channels; the active metal components in the catalyst are intensively distributed on the active carbon, and the catalyst shows good activity and stability in the advanced oxidation treatment process of sewage containing organic matters.

The invention belongs to the technical field of hierarchical porous composite carbon materials, and particularly relates to an activated carbon encapsulated imidazole metal organic framework composite material with high gas separation selectivity and a preparation method thereof. The composite material is a hierarchical porous composite carbon material, the general formula is ACx.MOFy, AC is activated carbon, MOF is a metal organic framework material adsorbed with imidazole ligands, and x: y is equal to 50-200; the mass ratio of the AC is 80 wt%-90 wt%, and the mass ratio of the MOF is 10 wt%-20 wt%. The composite material is prepared by alternately dipping the activated carbon in a metal salt solution and a ligand solution and carrying out a soaking reaction. The compounded carbon material forms porous microcrystal MOF, the pore diameter is smaller, the micropore content can be remarkably increased, the specific surface area can be remarkably increased, the functional group variety of the composite material is increased, and therefore the selectivity and the adsorption capacity of the composite carbon material are improved.

Microporous silicon carbide fiber and method for preparing same. The microporous silicon carbide fiber is characterized in that the Si content is 40-65wt%, the C content is 25-45wt%, and the balance is O, in the form of continuous fibers, and the volume of micropores (pore diameter≤2nm) accounts for 85vol% of the total pore volume Above, the average pore diameter is 1.30-2.00nm, and the specific surface area is 1100-2100m2 / g. The preparation method is characterized in that the C-rich silicon carbide fiber is firstly prepared by polycarbosilane and carbonaceous polymer blend spinning, non-melting, and cracking, and then the microporous silicon carbide fiber is obtained by activating the C removal process. The microporous silicon carbide fiber of the present invention has high micropore volume content, stable pore size, is not easy to collapse, high specific surface area, high temperature resistance, good oxidation resistance, and has good applications in the fields of environmental management, energy storage, medicine and health, etc. prospect.

The invention relates to the technical field of decarbonization modification activation treatment of unburned coal gangue and preparation of autoclaved aerated concrete. The unburned coal gangue decarburization modifier is any one of nitrate, potassium permanganate, H2O2 and the like. The invention relates to an unburned coal gangue decarburization modification activation method, which comprises composite decarburization modification activation such as physical decarburization, mechanical activation, chemical decarburization modification activation and the like. The autoclaved aerated concrete prepared from the unburned coal gangue comprises more than 50% of the decarburized modified activated gangue material. According to the invention, the tolerance of the product to the carbon content of the coal gangue is improved, the activity of the coal gangue raw material is excited, the hydrothermal reaction is promoted to be fully carried out, and a multi-mineral gelling substance composed of several kinds of hydrated calcium silicate and other hydrated minerals can be generated, so that a more compact microcrystalline structure is obtained; and the formation of a micropore structure in a pore wall is facilitated, so that the product has good physical properties.

The invention discloses a biological porous carbon-based cathode material of a lithium-sulphur battery. By taking a walnut shell as a biological carbon source, the walnut shell is subjected to thermal pyrolysis at a high temperature to obtain a bio-coke; and then activation reaction on the bio-coke is carried out by adopting KOH, so that microporous channels are effectively enriched and the mesopore size is adjusted. The obtained microporous bio-carbon material has extremely high specific surface and has a developed pore structure; after the material is supported with sulphur, excellent electrochemical performance and stability can be shown; moreover, the sources of the related raw materials are wide, the preparation process is simple, and the material is suitable for being popularized and applied.

The invention discloses calcium acetate modified hydrophilia activated carbon and a preparation method thereof. The calcium acetate is loaded on the surface of the carbon skeleton of the activated carbon so as to form the hydrophilia activated carbon. According to the preparation method, the activated carbon raw material is treated sequentially through steps of processing at a high temperature, soaking in a calcium hydroxide solution, drying, and activating, then soaking in ethyl acetate, carrying out esterolysis reaction, nitrogen purging desorption, and vacuum desorption so as to prepare the hydrophilia activated carbon. The preparation method is simple to operate and has low cost; and the prepared hydrophilia activated carbon has a stable structure and large specific surface area, is low in carbon loss, can strongly adsorb vapour and has large adsorption capacity, has stable adsorption performance and has good reusability.

The invention relates to a process for obtaining activated carbon by a physical activation method. The process comprises the following steps: S1, crushing, namely tearing and crushing wood into sawdust by a crusher; s2, drying, namely conveying smashed wood chips into a drying oven through a conveyor to be dried; s3, carbonizing, namely feeding dried sawdust into a carbonizing device through a spiral conveyor, and carrying out heat conduction heating on the carbonizing device through a combustion system to form carbon; s4, discharging carbon, namely cooling the formed carbon, and fully coolingto obtain matrix carbon; and S5, preparing the activated carbon, namely putting the matrix carbon into a physical activation device, conveying water vapor into the physical activation device, enabling the matrix carbon to be in direct contact with the water vapor, and enabling the water vapor to destroy the cell structure of the matrix carbon to allow the matrix carbon to form countless nanoscalepore structures, thereby obtaining the activated carbon.

The invention discloses hydrophilic active carbon modified by sodium acetate and a preparation method thereof. The hydrophilic active carbon is formed by loading sodium acetate on the surface of the carbon framework of active carbon. The preparation method comprises the following steps of: sequentially carrying out high-temperature treatment on an active carbon raw material, soaking in a sodium hydroxide solution, drying, activating, soaking in ethyl acetate and carrying out esterolytic reaction, nitrogen purging desorption and vacuum desorption to obtain the hydrophilic active carbon. The preparation method disclosed by the invention has the advantages of easiness for operation and low cost; the prepared hydrophilic active carbon has the advantages of stability in structure, large specific area, less carbon loss, high adsorption capacity and large volume on water vapors, stability in adsorption property and good reusability.

The invention discloses a preparation method of silica gel and the silica gel obtained therefrom, and relates to the technical field of inorganic silica gel. The present invention includes the following processes in sequence: rubber making, aging, tapping, washing and drying; the washing process uses magnetized water for washing, the washing temperature is 20-80°C, and the end point of washing is that the conductivity of the rubber particles is below 0.5mS / cm. The invention adopts magnetized water washing in the preparation process of silica gel, and the washing time is shortened to less than 40 hours, which saves the washing time of silica gel and improves the production efficiency of silica gel; magnetized water has high magnetism, and quickly washes out the salt ions in silica gel, thereby reducing the The amount of magnetized water reduces the production cost; the specific surface area of ​​silica gel is 300‑800m 2 / g, the pore volume is 0.4‑1.0mL / g, which protects the fine pore structure inside the silica gel to the greatest extent and increases the proportion of micropores; the silica gel preparation method of the present invention not only has good economic benefits, but also has certain social benefits .

The invention relates to a preparation method of a carbon-based mercury-removing absorbent. The preparation method includes the steps of A), mixing fly ash with alkaline liquid, and etching to obtain etched fly ash; B), mixing the etched fly ash with metal halide and alkali under an inert gas environment, and activating to obtain activated fly ash, wherein activating temperature is 700-800 DEG C and activating time is 90-120 minutes; C), mixing the activated fly ash with a metal halide solution, and modifying to obtain the carbon-based mercury-removing absorbent. The preparation method has the advantages that the fly ash is subjected to alkaline liquid etching first, the alkali is allowed to react with the carbon of the fly ash, and a large amount of pores exist at etched positions; the specific surface area, micropore contents and functional groups of the fly ash are increased to a large extent by the activating; the surface and inside of the fly ash carry halogen elements through the modification by the metal halide solution, and the mercury-removing ability of the fly ash is further increased.

The invention discloses a method for increasing the porosity of low-quality activated carbon. The method is to first place the low-quality activated carbon in a short-chain alkane atmosphere for pyrolysis, and then place it in a reducing atmosphere for reduction. This method uses low-quality activated carbon with low porosity and high proportion of micropores to obtain high-quality activated carbon with high porosity and high proportion of mesopores and macropores through pore expansion. The low-quality activated carbon treated by this method can be used in supercapacitors. Significantly reduces the production cost of supercapacitors, and improves the capacity of supercapacitors, such as in Et 4 NBF 4 In the / AN system, the energy density can reach 21.67Wh / kg, and the voltage window is 2.7V, which has high application value.

The invention discloses a preparation method and application of an ultra-high cross-linked resin with controllable polarity and pore structure. The preparation method of the ultra-high cross-linked resin is to use dimethacrylate as the cross-linking agent, 4-vinylbenzyl chloride as the monomer, and obtain the precursor resin by suspension polymerization in the presence of porogens, dispersants and initiators ; The resulting precursor resin is subjected to a Friedel-Crafts reaction under Lewis acid catalysis to obtain an ultra-highly cross-linked resin. By adjusting the mass ratio of cross-linking agent to monomer, the polarity and pore structure of the ultra-high cross-linked resin can be adjusted within a certain range, and the polarity and pore structure of the ultra-high cross-linked resin can be adjusted in an appropriate range It can be used to selectively adsorb polar small molecular aromatic organic compounds in water, and has broad application prospects. In addition, the method for preparing the ultra-high cross-linked resin is simple, low in cost, excellent in dynamic performance, good in reusability, and can be industrialized.

The invention relates to a macro preparation method of micropore-rich nitrogen-doped yolk-eggshell structure carbon microspheres. The macro preparation method comprises the following steps: 1) dissolving a phenol source in deionized water, adjusting the solution to be weakly alkaline, adding organosilane for hydrolysis to obtain an organosilicone core, then adding an aldehyde source for condensation polymerization to form a coating shell layer, centrifuging, washing and drying to obtain organosilicone-phenolic resin core-shell structure microspheres; and 2) carbonizing the product in the step1) in an inert atmosphere, removing the silicon template, and activating to obtain the micropore-rich nitrogen-doped yolk-eggshell structure carbon microspheres. Compared with the prior art, the method has the following advantages: the synthesis process is simple and green, and the cost is low; the obtained carbon microspheres have high micropore content and high carbon residue and are suitable for industrial application; the pore size distribution of the carbon microspheres is highly matched with the ion size of the EMIMBF4 electrolyte, and the electrode / electrolyte system shows high specificcapacity, high energy density and excellent rate capability when being applied to a supercapacitor.

The invention discloses calcium acetate modified hydrophilia activated carbon and a preparation method thereof. The calcium acetate is loaded on the surface of the carbon skeleton of the activated carbon so as to form the hydrophilia activated carbon. According to the preparation method, the activated carbon raw material is treated sequentially through steps of processing at a high temperature, soaking in a calcium hydroxide solution, drying, and activating, then soaking in ethyl acetate, carrying out esterolysis reaction, nitrogen purging desorption, and vacuum desorption so as to prepare the hydrophilia activated carbon. The preparation method is simple to operate and has low cost; and the prepared hydrophilia activated carbon has a stable structure and large specific surface area, is low in carbon loss, can strongly adsorb vapour and has large adsorption capacity, has stable adsorption performance and has good reusability.

The present invention relates to a kind of porous carbon material SO 2 The electrochemical oxidation catalyst and its preparation method and application, specifically, obtain a loose porous metal-free carbon material catalyst through the process of pretreatment, doping and two heat treatments on the amorphous carbon material. Through the process of constant potential and dynamic potential, test the SO of the prepared catalyst 2 Electrochemical oxidation ability and the catalyst's reaction to SO at an applied potential 2 In-situ response; tests show that this catalyst has obvious desulfurization effect. The porous carbon material catalyst prepared by amorphous carbon material increases the micropore area by 33%-40%, the micropore volume increases by 28%-30%; the outer pore area increases by 55%-60%, and the total specific surface area increases by 48%. ‑50%, and some elements are doped on the surface of the porous carbon material catalyst, and some functional groups are modified. SO at constant potential of the catalyst 2 The electrochemical oxidation effect is good, in the gas phase and liquid phase SO 2 The field of electrochemical oxidation has great application potential, which can solve the increasingly severe SO 2 Pollution issues are positive.

The invention relates to a method of preparing a nitrogen-doped porous carbon material, and belongs to the field of inorganic nanometer materials and electrochemistry. The inventive method comprises the steps of: preparing mesoporous carbon nitrogen compound with mesoporous silicon oxide powder and ethylene diamine as precursors, and activating with an activator potassium hydroxide at high temperature while controlling the mass ratio of the potassium hydroxide and the mesoporous carbon nitrogen material to obtain a nitrogenous material with high specific surface area and pore volume. The specific electric double layer capacitance of the inventive nitrogen-doped porous carbon material in alkaline aqueous electrolyte under potential scanning speed of 2mV / s is 328F / g and 318F / g, respectively, which are much higher than that of the reported porous carbon materials. The inventive nitrogen-doped porous carbon material has good application prospect as a high-power super capacitor active material.

The invention discloses a carbonization process based on constant temperature carbonization. The carbonization process comprises the following steps: S1, powder; S2, feeding; S3, drying; S4, intermediate feeding; S5, carbonization; S6, Charcoal. The present invention adopts constant temperature carbonization to make charcoal, and the carbonization of wood in the carbonization device does not pass through open flame carbonization; when the wood in the carbonization device is carbonized, combustible gases will be generated, and these combustible gases will return to the combustion system through the pipeline to burn, so that the combustion The system can also supply heat to the drying device and carbonization device through pipelines, thereby forming an energy recycling system.

The invention discloses a catalyst as well as a preparation method and application thereof, the catalyst comprises nitrogen-doped porous carbon, and Co3O4 nanoparticles with hollow structures and MnO2 nanoparticles are loaded on the nitrogen-doped porous carbon. The preparation method comprises the following steps: taking a MnCoZn-ZIF material as a raw material, and carrying out two-step calcination treatment at different temperatures and atmospheres. In the invention, under the synergistic effect of the nitrogen-doped porous carbon, the Co3O4 nanoparticles and the MnO2 nanoparticles, the catalyst can be ensured to have excellent catalytic activity on the premise of reducing the content of Co3O4, and the catalyst has the advantages of low cost, large specific surface area, multiple active sites, high catalytic oxidation activity, good stability and the like; the catalyst can be widely used for catalytic oxidation of carbon monoxide, can quickly and thoroughly oxidize carbon monoxide into carbon dioxide, and is beneficial to effective purification of carbon monoxide tail gas. The preparation method has the advantages of simple process, convenience in operation and the like, is suitable for large-scale preparation and is convenient for industrial application.