32results about How to "Excellent adsorption and desorption performance" patented technology

An object of the present invention is to provide a heavy metal ion removing agent which has excellent removal performance compared with conventional substances. The organic polymer material of the present invention is characterized in that it has a polymer side chain derived from haloalkyl-substituted styrene on the main chain of the organic polymer substrate, and introduces a compound that forms a complex with heavy metal ions on the polymer side chain. Compound functional groups. Since the organic polymer material of the present invention has excellent performance in removing heavy metal ions, it is suitable as a heavy metal ion removing agent.

An object of the present invention is to provide a heavy metal ion removing agent which has excellent removal performance compared with conventional substances. The organic polymer material of the present invention is characterized in that, on the main chain of the organic polymer substrate, there are polymer side chains derived from halogenated alkyl-substituted styrene, and on the polymer side chains are introduced Compound functional groups. Since the organic polymer material of the present invention has excellent performance in removing heavy metal ions, it is suitable for use as a heavy metal ion removing agent.

The invention relates to an organic inorganic hybridized material for removing heavy metal ions from sewage. The material is composed of a carrier nanometer silicon dioxide and a chemical sensor, wherein the chemical sensor is capable of selectively identifying and adsorbing the heavy metal ions; the mass percent of the chemical sensor to the nanometer silicon dioxide is (10%-50%):(50%-90%); the grain size of the hybridized material is 30-300nm; and the specific surface area is 100-900m<2> / g. A preparation method comprises the following steps: taking rice husk ash generated from rice husk combustion as raw material and preparing porous silicon dioxide, and then bonding the chemical sensor capable of selectively identifying and adsorbing the heavy metal ions with the surface of the porous silicon dioxide, thereby obtaining the organic inorganic hybridized material. The chemical sensor with excellent adsorbing property for the heavy metal ions is bonded with the surface of the porous SiO2, so that the material is suitable for being used as a removing agent for the heavy metal ions in industrial sewage. The preparation method for the organic inorganic hybridized material is simple; the capability of selectively identifying and adsorbing the heavy metal ions is strong; and the organic inorganic hybridized material has the advantages of high processing speed, regenerating property, and the like.

The invention relates to the technical field of catalytic materials and air pollution control, and aims to provide a method for catalytically decomposing N 2 Preparation of cobalt-based metal-organic framework-derived catalysts for O. Including: dissolving 2-methylimidazole and proton-removing agent in deionized water, adding Co(NO 3 ) 2 ·6H 2 O solution; after standing at room temperature for 10 minutes, centrifuge and wash, collect the solid precipitate and dry it to obtain a precursor with a zeolite imidazolate skeleton structure; burn the precursor in an inert gas atmosphere for pyrolysis; naturally anneal and reduce After reaching room temperature, a cobalt-based metal-organic framework-derived catalyst is obtained. The invention provides a catalyst with a large specific surface area, well-dispersed active sites, excellent oxidation-reduction performance and adsorption-desorption capacity; the introduced proton-removing agent can greatly accelerate the coordination rate of metal ions and organic ligands, making The reaction proceeds rapidly in aqueous solution, which provides the possibility for rapid industrial synthesis. The catalyst has excellent activity, anti-sulfur poisoning and active regeneration ability at elevated temperature.

An object of the present invention is to provide a carbon dioxide adsorption and release device, which has high adsorptivity, and also consumes low energy upon adsorption and desorption. The carbon dioxide adsorption and release device is characterized by including a pair of electrodes (electrode 1 and electrode 2) provided opposite to each other; an electrolyte 3 filled between the respective electrodes 1 and 2 of the pair of electrodes; and a porous body 4 provided on the electrode 1 of the pair of electrodes, wherein the electrolyte 3 absorbs carbon dioxide thereby dissolving the carbon dioxide therein, and thus enabling formation of carbonic acid ions or hydrogen carbonate ions; and the carbonic acid ions or hydrogen carbonate ions are electrostatically adsorbed on a surface of the porous body 4 when a forward voltage is applied to the pair of electrodes by the porous body 4, and the carbonic acid ions or hydrogen carbonate ions are electrostatically released from a surface of the porous body 4 when a backward voltage is applied to the pair of electrodes.

The invention relates to a preparation method and application of a novel graphene foam rectifying tower filler. At a high temperature, through a solvothermal way, a graphene oxide solution is subjected to molding; a metal frame structure is embedded in a process; thus, one rectifying tower filler unit is formed; a porous structure of the rectifying tower filler unit can be used as a microreactor for catalytic rectification. A novel three-dimensional graphene filler is compared with HY-Pac and Pall ring fillers, and is used for filling a rectifying tower; a graphene filler maintains a regular filler property to a great extent; the mass transfer capacity is high; the graphene filler is large in liquid holdup, and can be used as a novel catalytic microreactor; the pressure drop of the graphene filler can be decreased to 1 / 3 of that of a conventional filler.

The invention relates to a preparation method of a multi-response graphene / graphite oxide film. The method comprises the following steps of: ultrasonically dispersing the graphite oxide in deionized water to obtain a graphite oxide aqueous solution, and then, regulating the pH value to 2-6 by using acid; placing an active metal plate in the graphite oxide aqueous solution, placing the graphite oxide aqueous solution on a horizontal platform and maintaining temperature of 10-15 DEG C, standing, taking out the active metal plate 1-7 days later, washing, drying, and peeling off the film, then, thereby obtaining the multi-response graphene / graphite oxide film. The preparation method provided by the invention is simple, and can implement large-scale and low-cost production.

The invention relates to a preparation method for a catalyst modified CuZnZr used for catalysis of CO2 to synthesize methanol, which belongs to the technical field of resource utilization of blast furnace tail gas. The preparation method comprises the following steps: preparing a mixed solution of Cu(NO3)2, Zn(NO3)2 and Zr(NO3)4; then adding La2O3, CeO2, Pr2O3, Nd2O3 and Sm2O3 as modification auxiliary agents; carrying out titration with a Na2CO3 solution and adjusting the pH value of the mixed solution; and carrying out pumping filtration and subjecting an obtained filter cake to drying, grinding, roasting and granulation in an air atmosphere so as to obtain the 20-mesh to 40-mesh modified CuZnZr catalyst used for synthesis of methanol. Compared with a common prepared catalyst, the catalyst prepared by using the method in the invention has the advantages of uniform dispersion of active components, high catalyst activity and high mechanical strength.

The present invention addresses the problem of providing a new form of adsorbent that is suitable for canisters mounted on automobiles. The activated carbon fiber sheet satisfies one or more of requirements among various indicators such as specific surface area, volume of pores having a predetermined pore diameter, and sheet density. For example, an embodiment of the activated carbon fiber sheet may have a specific surface area of 1400 to 2200 m2 / g, a pore volume of pores having a pore diameter of greater than 0.7 nm and 2.0 nm or less of 0.20 to 1.20 cm3 / g, and a sheet density of 0.030 to 0.200 g / cm3.

The invention discloses a method for recovering rhenium from molybdenum smelting waste acid and belongs to the technical field of metal rhenium recovery and recycle. The method comprises 1, filtering molybdenum smelting waste acid, and treating the filtrate by a composite aminoethylene weak basic anion exchange resin column for adsorption until adsorption is saturated, and 2, carrying out desorption on the saturated anion exchange resin column, collecting the desorption liquid and carrying out evaporation crystallization to obtain ammonium perrhenate. The composite aminoethylene weak basic anion exchange resin has large saturation adsorption quantity. The desorption liquid has rhenium content 100 times or more that of waste acid. Compared with the existing extraction method and ion exchange method, the method provided by the invention has a high rhenium recovery rate of 98% or more. Through use of solubility difference of ammonium perrhenate, ammonium molybdate and ammonium sulfate, ammonium perrhenate is purified by evaporation crystallization and ammonium perrhenate purity is 99.9% or more. The method has a simple rhenium recovery process, is environmentally friendly, is convenient for operation and is suitable for large scale production.

The invention discloses a foamed ceramic carrier, and the foamed ceramic carrier supports TiO 2 Photocatalyst and preparation method thereof. The foamed ceramic carrier includes foamed ceramics and composite oxides. The foamed ceramics has an open-cell foam structure. The pores of the foamed ceramics contain three-dimensional through-micron-scale pores, and the surface of the pores and the pores are distributed with composite oxides. The preparation method of the foamed ceramic carrier comprises: impregnating the foamed ceramic with the composite oxide precursor slurry to prepare the foamed ceramic carrier. The supported TiO prepared by the foamed ceramic carrier 2 The photocatalyst has high photocatalytic activity, and the titanium dioxide is not easily lost, and the activity stability is good, especially suitable for photocatalytic purification of gas or liquid.

The present invention addresses the problem of providing an adsorbent using activated carbon fibers, which is suitable for use in an automotive canister and is capable of suppressing pressure loss. Provided is an activated carbon fiber sheet for an automobile canister, which satisfies the following requirements (1)-(4). (1) The specific surface area of the sheet is 1100-2300 m < 2 > / g. (2) the density of the sheet material is 0.010 to 0.200 g / cm < 3 > or less; and (3) the thickness of the sheet material is 0.10 to 100.00 mm. And (4) the fiber diameter of the sheet is 13.0 [mu] m or more.