77 results about "Microporous material" patented technology

The invention relates to a fiber with improved thermal insulation properties comprising a polymeric fiber base material and a microporous material in particle form, wherein the microporous material comprises an agglomerate of precipitated insoluble amorphous metal silicates, in particular precipitated silicon dioxide. The invention further includes a method for producing a fiber with improved thermal insulation properties.

The invention discloses a lead-acid storage battery electrolyte density measuring device, and belongs to the technical field of battery measurement, the lead-acid storage battery electrolyte density measuring device comprises a detection mechanism, the detection mechanism comprises a connecting column and a tuning fork mechanism, the tuning fork mechanism comprises a tuning fork base and a tuning fork sensor, and the tuning fork mechanism is sleeved with a double-layer isolation mechanism; the double-layer isolation mechanism comprises an inner cover mechanism and a microporous outer cover mechanism, a microporous material of the outer cover mechanism enables the electrolyte to penetrate through the outer cover mechanism and block bubbles, and the inner cover mechanism enables the electrolyte to turn and flow many times to make contact with the tuning fork sensor through an inner cover first channel and an outer cover second channel which are arranged in a staggered mode. The tuning fork mechanism is sleeved with the double-layer isolation mechanism, the outer cover mechanism adopts a microporous material to achieve electrolyte permeation and bubble blocking, the inner cover forces electrolyte to flow circuitously through the staggered channel design, the double structures cooperatively eliminate bubble attachment and inhibit turbulence interference, and it is ensured that frequency signals of the tuning fork sensor are stable; and the measurement precision and sensitivity are obviously improved.

The invention discloses a water taking and ferromanganese removal device based on a seepage collecting gallery, and belongs to the technical field of ferromanganese removal of seepage collecting galleries, the water taking and ferromanganese removal device comprises a seepage collecting gallery main body, an aeration assembly and a vibration piece, a gabion is installed on the upper surface of the seepage collecting gallery main body, the aeration assembly is installed inside the gabion, and the vibration piece is installed on the upper surface of the seepage collecting gallery main body. According to the manganese ore catalytic oxidation device, external gas enters the aeration ball through the air inlet cover, the connecting pipe and the aeration pipe, and the gas is extruded through a microporous material of a bubble film to form microbubbles, so that the content of dissolved oxygen in a water body is greatly increased, a sufficient oxygen source is provided for a manganese ore catalytic oxidation reaction, and the gas-liquid mass transfer effect is enhanced; meanwhile, the other part of gas enters the spherical shell and blows the vibration ball to drive the vibration rod to swing, the impact ball impacts the vibration piece through the connecting block and the connecting rod and then is transmitted to the aeration ball to enable the aeration ball to swing greatly, a water body generates turbulent flow, and the contact area and frequency of pollutants and manganese ore are increased.

The utility model is suitable for the technical field of electronic atomization equipment, and provides an atomization core and an atomizer, the atomization core comprises a base body and a heating element, the base body is made of a microporous material, the base body is provided with a first surface and a second surface which are opposite to each other, and a ventilation opening is formed in the first surface of the base body; the heating body is arranged on the second surface of the base body, the surface of the heating body is provided with a heating area, and the heating area surrounds the ventilation opening. According to the atomization core, in the atomization work process, air in the external environment can enter the base body through the ventilation opening and make full contact with the liquid substrate located in the heating area, combustion is more sufficient, dry burning is avoided, and therefore the service life of the atomization core can be relatively prolonged, and the atomization efficiency is improved. The taste of the aerosol before and after can be kept consistent, and the use experience of consumers is improved.

The invention belongs to the technical field of ion exchange membranes, and relates to a composite membrane with a high ion selective catalytic function and a preparation method thereof. The composite membrane has a three-layer structure, namely a high-ion-selectivity base membrane doped with a microporous material and catalytic functional composite layers doped with a positive electrode catalyst and a negative electrode catalyst on two sides of the base membrane. The preparation method comprises the following steps: firstly, dissolving perfluorinated sulfonic acid resin in an organic solvent, then dividing the obtained solution into three parts, and respectively adding a microporous material, a positive electrode catalyst and a negative electrode catalyst into the three parts for dispersion; after concentration treatment, a step-by-step tape casting mode is adopted to sequentially prepare a high-ion-selectivity base membrane, a positive electrode catalytic function composite layer and a negative electrode catalytic function composite layer, and finally, the three layers are compounded to form the high-ion-selectivity catalytic function composite membrane. The prepared composite membrane endows the flow battery diaphragm with a catalytic function; through fusion of the catalyst and the diaphragm resin, the problem of catalyst shedding is solved, and the conductivity and the ion barrier ability of the diaphragm are improved at the same time.

The invention relates to the field of noise reduction, in particular to a blower silencer, a blower silencing device and a noise reduction blower. The blower silencer comprises a hard cavity, a microporous medium filled in the hard cavity, and an airflow channel penetrating through a hard end face of the hard cavity and the interior of the microporous medium. An air outlet and an air inlet are respectively formed in two ends of the airflow channel; the Young modulus of the hard cavity is greater than 1MPa; the microporous medium is a microporous material or a component processed with micropores; the hard cavity, the microporous medium and the airflow channel form an assembly with a series of resonant frequencies, and within the spectral range of the resonant frequencies, acoustic wave impedance in the airflow channel is lower than air impedance, so that acoustic wave propagation is hindered. The hair dryer solves the problem that hearing may be damaged due to the fact that an existing hair dryer is too high in noise.

The invention relates to the technical field of filter materials, in particular to a mineral composite filter element and a preparation method and application thereof. The mineral composite filter element comprises the following raw materials in parts by weight: 1-50 parts of a hydrogen production material, 1-15 parts of a mineralization material, 5-10 parts of a microporous material, 1-10 parts of an antibacterial material, 5-50 parts of activated carbon and 5-60 parts of a thermoplastic polymer, the hydrogen production material is one or two of magnesium-based and silicon-based mineral hydrogen production material particles. Through the integrated structural design, multiple functions of filtration, mineralization, hydrogen production, antibiosis and the like are efficiently, stably and enduringly integrated, and the defects that in the prior art, a filter element is single in function, short in service life, unstable in efficiency, complex in system and the like are overcome.

The application provides a method for high-selectivity adsorption of extremely low concentration NH3 by using alcohol amine ionic liquid microporous materials, and belongs to the technical field of gas separation and purification. In the method, the ionic liquid microporous material uses a mesoporous material as a carrier, and is modified by a multi-site alcohol amine ionic liquid to form a novel ionic adsorption material with selective adsorption NH3 sites and microporous structure. Since the proton hydrogen on the cation of the alcohol amine ionic liquid can form a hydrogen bond with NH3, and the material has a micropore effect, the material can efficiently capture NH3, especially has high selectivity at extremely low NH3 concentration, and the adsorbed NH3 can be completely desorbed by heating or reducing pressure, and the adsorbent has good circulation after regeneration, and still has a high adsorption capacity after ten cycles, thereby providing a new way for efficient purification and separation of NH3.

This invention discloses a polyetheretherketone (PEEK) / aramid fiber composite microporous material and its molding method, belonging to the field of engineering plastics processing. The invention first modifies aramid fibers by amylation and prepares carboxylated PEEK. Covalent bonding between the amino and carboxyl groups is achieved through a chemical reaction, resulting in aramid fibers coated with PEEK. These fibers are then mixed with PEEK resin, a melt flow modifier, and additives to obtain a composite material. The composite material is then subjected to biaxial thermo-stretching orientation to improve its transverse / longitudinal orientation and crystallinity. Finally, the composite microporous material is obtained through supercritical CO2 microporous foaming. Because the foaming temperature is lower than the thermo-stretching orientation temperature, the biaxial orientation structure of the composite material is well preserved, and the well-dispersed aramid fibers effectively improve the cell wall strength, inhibit cell growth and merging, significantly increase cell density, and drastically reduce cell size, thereby constructing a high-strength, heat-insulating PEEK composite microporous material.

Methods for synthesis of hierarchically ordered zeolites and zeolite-type materials are provided. Synthesized hierarchically ordered zeolites and zeolite-type materials formed according to the methods herein possess a high-degree of well-defined long-range mesoporous ordering. The methods include base-mediated reassembly, by dissolution of the parent material to the level of oligomeric structural building units of the parent material, and minimizing or avoiding amorphization / structural collapse. The dissolution and self-assembly is comprehensively controlled to produce hierarchically ordered zeolites and zeolite-type materials according to the methods herein.

The invention relates to the technical field of ammonium dinitramide preparation methods, in particular to an ammonium dinitramide coating material and a preparation method and application thereof.The preparation method comprises the following steps that under the protective atmosphere, an acetic acid solution, trialdehyde phloroglucinol, ammonium dinitramide and an amino compound are mixed and subjected to a Schiff base reaction, and an intermediate material is obtained; and depositing a fluorocarbon on the surface of the intermediate material to prepare the ammonium dinitramide coated material. According to the invention, trialdehyde phloroglucinol reacts with an amino compound to generate an interlinked interlayer microporous material (COFs framework material), and the interlinked interlayer microporous material has good compatibility with strong-polarity ammonium dinitramide and a non-polar fluorocarbon compound, so that transition of ammonium dinitramide (strong-polarity)-microporous material (moderate-polarity)-fluorocarbon (non-polarity) is formed; the abrupt change of interfacial tension when the surface of ammonium dinitramide is directly coated with the fluorocarbon is relieved.

The present invention belongs to the field of metal organic framework materials, and specifically relates to a microporous material SDMOF-1, a preparation method thereof, and an application thereof. According to the difference in the sizes of C2H2 and C2H4 molecules, a microporous MOFs with a suitable size is designed to capture C2H2 molecules, thereby achieving the purpose of separating a mixture of C2H2 and C2H4 and purifying C2H4. The present invention selects H2bodc and bpy ligands and copper nitrate to construct a microporous material SDMOF-1 with a pore size of #imgabs0#. The Cu2(COO)4 paddle wheel secondary building unit is connected to four H2bodc ligands to form a twisted lattice-shaped two-dimensional layer. The bpy ligand coordinates with copper along the c-axis direction and supports each layer to form a complete three-dimensional structure. The pore size of the framework is very compatible with the size of the C2H2 molecule, but cannot accommodate the C2H4 molecule, thereby achieving a molecular sieving effect.

The utility model relates to the field of breathable tiles, in particular to a two-way clamped breathable tile. According to the technical scheme, an upper-end rack is arranged on an upper-end connecting strip, a lower-end connecting strip is arranged on the other side of a plate-shaped breathable tile body, a lower-end rack is arranged on the lower-end connecting strip, open holes are formed in the upper-end connecting strip and the lower-end connecting strip, the upper-end rack is connected with a strip-shaped lower-end breathable tile body in a wedge-shaped mode, and the lower-end rack is connected with a strip-shaped upper-end breathable tile body in a wedge-shaped mode. The plate-shaped breathable tile body is arranged to provide a covering main body, the reinforcing supporting strips are arranged in the hollow protruding blocks to enhance the reinforcing and supporting effects, the anti-collision protection layer performs anti-collision buffering protection work, and the waterproof protection layer performs waterproof protection. The upper end rack is fixed by the upper end connecting strip, the lower end rack is fixed by the lower end connecting strip, wedge-shaped connection can be carried out, bidirectional clamping connection can be realized, the strip-shaped upper end breathable tile body and the strip-shaped lower end breathable tile body can be independently connected, and the whole structure is prepared by adopting a microporous material based on a foaming process.

The present application relates to a kind of water-soluble polyolefin dissolving agent, polyolefin microporous material and its preparation method, wherein, by mass fraction, the water-soluble polyolefin dissolving agent includes 20%~60% main porogen, 5%~30% auxiliary porogen, 20% or less compatibility regulator and the balance of water, the main porogen is selected from at least one of water-soluble polyether amine, water-soluble polyether ester, the auxiliary porogen is selected from onium salt type ionic liquid, the compatibility regulator is selected from amphiphilic substance.The water-soluble polyolefin dissolving agent of the present application can completely replace white oil / space oil as porogen, replace dichloromethane with water to extract, eliminate the safety, environmental protection and residual problems caused by organic solvent, simultaneously, by regulating the composition of water-soluble polyolefin dissolving agent and extraction condition can realize the controllable adjustment of microporous structure, and the water-soluble solution containing dissolving agent obtained by extraction can be concentrated, distilled and recycled and closed loop utilization.

The application discloses a kind of hexafluorosilicic acid anion functionalized microporous material and its preparation method and application in adsorption separation olefin / alkane.The microporous material is by metal ion Zn 2+ , inorganic anion SiF6 2‑ And azole organic ligand L are formed by the coordination of static solvothermal reaction polymer, the microporous material with the separation property can only be synthesized using static solvothermal reaction method.The microporous material has high density of anion and azole site, and the structure properties of the material can be controlled by adjusting the solvent type of the reaction, the feeding ratio of anion and azole organic ligand and the type of azole organic ligand.The microporous material obtained by the application can realize the separation of olefin / alkane based on size and electronic effect.

The invention discloses a high-magnification silicon-carbon material and a preparation method thereof, and the high-magnification silicon-carbon material is prepared by the following method: (1) alloying a silicon material and metal lithium to obtain a silicon-lithium alloy; (2) treating the silicon-lithium alloy by using an alcohol solvent to obtain a silicon microporous material; and (3) introducing high-temperature carbon source gas into the silicon microporous material to fill micropores in the silicon microporous material. The silicon-carbon material with the three-dimensional honeycomb-shaped silicon and carbon mosaic structure is prepared through a unique process, in the silicon-carbon material, silicon is of a nanometer layered stacked structure, isotropic channels are formed in the silicon-carbon material and on the surface of the silicon, and a balanced lithium ion transmission path is formed by utilizing carbon filled in the channels; and the high-rate performance of the silicon-carbon material is effectively improved.

The utility model discloses a device for producing a breathable bottom membrane with nanoscale micropores, and particularly relates to the field of quilt cushion or quilt bottom membrane production equipment.The device comprises a shell, a solution box, a supporting plate, an electric telescopic rod and a lifting plate, the solution box is installed on the side end face of the shell, and the supporting plate is arranged on the bottom face of an inner cavity of the shell; an electric telescopic rod is arranged on the upper end face of the supporting plate, a lifting plate is arranged at the telescopic end of the electric telescopic rod, a placing plate is arranged on the upper end face of the lifting plate, a moving assembly is arranged on the upper end face of the lifting plate, and a microdroplet assembly is arranged at the moving end of the moving assembly. A solution for eroding a bottom membrane is poured into the solution box, the bottom membrane is placed on the upper end face of a placing plate, the height of the placing plate is adjusted through an electric telescopic rod, the position of the placing plate is adjusted through a moving assembly, and a micro-droplet assembly is used for generating nanoscale solution water drops to erode the bottom membrane, so that nanoscale micropores are generated in the bottom membrane; finally, the nano-scale microporous breathable quilt cushion bottom film which can keep breathability and effectively prevent moisture is obtained.

A composition of matter is provided comprising hierarchically ordered crystalline microporous material having well-defined long-range mesoporous ordering of cubic symmetry. The composition possesses mesopores having walls of crystalline microporous material and a mass of mesostructure between mesopores of crystalline microporous material. Long-range ordering is defined by presence of secondary peaks in an X-ray diffraction (XRD) pattern and / or cubic symmetry observable by microscopy.

The invention relates to an adsorption material, in particular to a microporous Ni-MOF adsorption material and a preparation method and application thereof. The microporous Ni-MOF material provided by the invention has remarkable advantages in structural stability and aperture matching, and is just matched with the kinetic diameters of hexane isomers and benzene / cyclohexane molecules, so that the microporous Ni-MOF material can realize an efficient molecular sieving effect. Especially, the selective recognition of straight-chain / single-branched-chain and double-branched-chain hexane realizes the'complete cutting 'capability which cannot be achieved by the existing adsorbent.

This invention relates to a plasma generator based on a dense microporous material catalysis, belonging to the field of low-temperature plasma technology. The plasma generator contains at least one discharge unit, which includes a first electrode, a microporous ceramic medium, and a second electrode. The first electrode is used to connect to a power source, and the second electrode is used for grounding. The microporous ceramic medium is used to adsorb gas molecules and active particles generated by the plasma discharge. This invention generates micro-discharge in a dense microporous medium, which has an extremely high specific surface area. When gas passes through, it is adsorbed onto the surface of the micropores in the medium. Similarly, active substances in the plasma are adsorbed onto the surface of the micropores in the medium. This improves the contact efficiency between short-lived, highly active particles and free radicals in the plasma and the reactants, promotes surface catalytic reactions, and improves the overall efficiency of the device.

The present invention provides a kind of Beta / KCC-1 mesoporous composite molecular sieve and its preparation, hydrocracking catalyst and its preparation and application, wherein, the composite molecular sieve has a core-shell structure, including Beta molecular sieve and KCC-1 mesoporous material, KCC-1 mesoporous material is tightly wrapped outside the Beta molecular sieve, and the surface morphology of the composite molecular sieve is fibrous. The present invention compounds microporous material Beta molecular sieve and mesoporous material KCC-1, gives full play to the respective advantages of microporous material and mesoporous material, so that the composite molecular sieve has excellent diffusion performance, suitable acid properties, pore structure. The Beta / KCC-1 composite hydrocracking catalyst prepared using the composite molecular sieve as a carrier is a new catalyst material, and its catalytic activity and selectivity for the hydrocracking reaction of tetralin are relatively high, showing higher conversion rate, yield and product selectivity.

The invention relates to a preparation method of a beta-configuration molecular sieve and MOR-configuration molecular sieve composite microporous material with a double-microporous structure and application of the composite microporous material in light alkane isomerization. The preparation method of the composite molecular sieve comprises the following steps: providing a first molecular sieve containing a first template agent, and then preparing a second molecular sieve in the presence of a second template agent and the first molecular sieve containing the first template agent to obtain the composite molecular sieve, wherein the first template agent and the second template agent are different in chemical structure, and the first molecular sieve is a beta-configuration molecular sieve and the second molecular sieve is an MOR-configuration molecular sieve. The composite molecular sieve provided by the invention can effectively improve the selectivity of high-octane-number component multi-branched-chain alkane, thereby improving the product quality.

A composition of matter is provided comprising hierarchically ordered crystalline microporous material having well-defined long-range mesoporous ordering of cubic symmetry. The composition possesses mesopores having walls of crystalline microporous material and a mass of mesostructure between mesopores of crystalline microporous material. Long-range ordering is defined by presence of secondary peaks in an X-ray diffraction (XRD) pattern and / or cubic symmetry observable by microscopy.

The ventilation plug comprises an air plug body, one end of the air plug body is an open end, the other end of the air plug body is a closed end, a plurality of air holes are formed in the closed end, a flow channel is formed in the air plug body, and the flow channel comprises an air inlet channel and a filter element channel in the direction from the open end to the closed end. A plurality of filter elements in sliding connection with the filter element channel are sequentially arranged in the filter element channel, in every two adjacent filter elements, the diameter of the filter element close to the open end is larger than that of the other filter element, the end, close to the open end, of each filter element is of a frustum structure, and the filter element channel comprises channel parts in one-to-one correspondence with the filter elements; conical transition parts corresponding to the frustum structures are arranged between the adjacent channel parts, a flexible filtering piece made of hydrophobic microporous materials is arranged between the filter element closest to the closed end and the closed end, and the ventilation plug is long in service life and good in waterproof performance.

The invention relates to a NOx adsorbent and a preparation method and application thereof.The NOx adsorbent mainly comprises a component A and a component B. The component A is a microporous material containing metal cations, the molar ratio of SiO2 to Al2O3 is (2-20): 1, and the metal cations account for 0.01%-6.0% of the weight of the component A; the component B is at least one of a modified porous silicon oxide material or a modified porous carbon material; the component A accounts for 30%-80% by weight, and the component B accounts for 20%-70% by weight. Not only can the NOx adsorption capacity of the adsorbent be effectively improved, but also the regeneration temperature of the adsorbent is hardly influenced, and the regeneration energy consumption is prevented from being improved.

The invention relates to a high-voltage positive electrode composite material, a preparation method and application thereof, and belongs to the technical field of lithium ion batteries, the surface of a manganese-based positive electrode material is coated with an inorganic microporous material, and a layer of magnetic phase is formed on the surface of the manganese-based positive electrode material, so that direct contact between the positive electrode material and an electrolyte is isolated, and the service life of the positive electrode material is prolonged. And the interface side reaction between the electrode and the electrolyte is weakened, and the electron spinning state of Ni and Mn on the surface of the positive electrode material is changed, so that the dissolution phenomenon of transition metal ions under high voltage is effectively inhibited, the structural stability of the manganese-based positive electrode material is improved, and the cycle life is prolonged. The first-circle discharge capacity, the first-circle coulombic efficiency and the capacity retention ratio of the lithium ion battery are further improved; the inorganic microporous material of the coating layer is subjected to grinding treatment, so that surface homogeneous coating is realized, and the problem of coating nonuniformity is solved.

The invention discloses a method for grafting a branched ether-containing surfactant on the surface of a microporous-ultramicroporous material and application, and belongs to the field of CO2 separation material modification and CO2 / N2 separation membranes. A siloxane coupling agent is used as a cross-linking agent, a microporous-ultramicroporous material containing hydroxyl or amino is subjected to surface modification through a branched ether-containing surfactant, and the obtained material is used as a filler of a mixed matrix membrane and can be physically crosslinked with a polymer matrix through hydrogen-bond interaction in the mixed matrix membrane, so that the composite membrane is prepared. According to the present invention, the compatibility between the filler and the matrix is effectively enhanced, the uniform dispersion of the filler in the membrane is promoted, and the formation of the non-selective interface defect is reduced so as to give full play to the advantages of high specific surface area, low diffusion energy barrier and molecular sieving characteristics of the microporous-ultramicroporous material. The grafted ether group can enhance the dissolution selectivity of the material to CO2, the micropore-ultramicropore structure is beneficial to improving the diffusion selectivity of gas, and the CO2 / N2 separation performance of the mixed matrix membrane is remarkably improved through the synergistic effect of the ether group and the micropore-ultramicropore structure.

The application provides a method for regulating and strengthening hydrogen isotope simulated moving bed separation by pore structure, and belongs to the technical field of hydrogen isotope separation and purification. The method comprises the following steps: immersing an adsorption column filled with pre-activated adsorbent and corresponding gas pipelines into a solvent; introducing hydrogen isotope raw gas into at least two adsorption columns for adsorption, introducing displacement gas into at least two adsorption columns for displacement, and performing regeneration on at least two adsorption columns for regeneration; every 4-20 min, switching valves to make the adsorption columns perform different operations to simulate the reverse movement of the adsorbent relative to the gas; the hydrogen isotope raw gas comprises H2 / D2 or H2O / D2O, and the displacement gas comprises D2 or D2O; the adsorbent is a microporous material with adjustable pore structure, and the pore size ranges from 0.4 nm to 5 nm. The application has excellent separation performance, the purity of D2 reaches 98%, the recovery rate of H2 and D2 is 95%, and the desorption can be completely regenerated in 20 min; the purity of D2O reaches 90%, and the desorption can be completely regenerated in 30 min, thereby greatly improving the selectivity and separation efficiency between hydrogen and deuterium.

The invention belongs to the technical field of three-dimensional crystal porous material preparation and adsorption separation, and discloses a Zn-amidole ultra-microporous MOF material and a preparation method and application thereof.The preparation method comprises the steps that 1, zinc salt and 3-amino-1, 2, 4-triazole are added into a mixed solution of N, N-dimethylformamide and water and then placed in an ultrasonic instrument for a period of time, and a uniformly-dispersed turbid liquid is obtained; (2) placing the polytetrafluoroethylene lining filled with the turbid liquid in a constant-temperature oven for three days to obtain colorless transparent crystals; and (3) filtering the single crystal sample cooled to the room temperature, washing with water and ethanol, airing in air, transferring into a sample tube, and activating to remove the solvent in the MOF pore channel for continuous adsorption performance test. The MOF material disclosed by the invention is simple in preparation process, low in raw material cost and stable in structure, is suitable for capturing carbon dioxide in flue gas under dual regulation and control of hole patterns and amino groups, and has a wide application prospect.

Methods and compositions disclosed concern exfoliated or delaminated lamellar mesoporous crystalline microporous material (CMM), including exfoliated or delaminated layers of a zeolite. In certain embodiments herein methods and compositions concern exfoliated or delaminated FAU zeolite, for example discrete layers of FAU zeolite, obtained by exfoliating / delaminating of a non-pillared two dimensional FAU zeolite comprising layered / stacked sheets.