5results about How to "Improve adsorption speed" patented technology

The invention discloses an adsorption heat storage material with a multi-stage stepped pore structure and a preparation method of the adsorption heat storage material, according to the material, a metal foam matrix is combined with the multi-stage pore structure, and the storage and release efficiency of heat energy is remarkably improved. Specifically, the metal foam matrix is composed of a plurality of metal foam layers with different porosities, and the porosities are gradually increased in the heat source direction, so that the heat resistance is effectively reduced, and the diffusion of adsorbate is accelerated. The adsorbent coating is coated with an adsorption material mixture containing a template agent, and is subjected to drying and roasting treatment to form a multi-stage pore structure comprising macropores, mesopores and micropores, so that the adsorption diffusion speed and the adsorption capacity are improved. The material not only improves the heat energy storage and energy release capabilities, but also optimizes the diffusion rate of adsorbate. According to the preparation method, through simple and convenient processes such as splicing of the metal foam layer and coating of the adsorbent, the production cost is reduced, the preparation process is efficient and controllable, and wide application prospects are achieved.

The invention relates to the technical field of lithium resource extraction, and provides a composite fiber membrane adsorbent as well as a preparation method and application thereof. The composite fiber membrane adsorbent comprises a polymer fiber membrane and a manganese lithium ion sieve coated carbon material loaded on the polymer fiber membrane. The preparation method of the composite fiber membrane adsorbent comprises the following steps: pre-treating a carbon material in an acid solution to obtain a pre-treated carbon material; a manganese source, a lithium source and a doped metal source are subjected to a hydrothermal reaction and calcined, and a manganese-series lithium ion sieve precursor is obtained; mixing the pretreated carbon material and a manganese-series lithium ion sieve precursor, and calcining to obtain a manganese-series lithium ion sieve precursor coated carbon material; and dispersing the manganese-series lithium ion sieve precursor coated carbon material into a polymer solution, spinning, and pickling to remove lithium to obtain the composite fiber membrane adsorbent. The composite fiber membrane adsorbent not only has high adsorption capacity, but also shows relatively low manganese solution loss, and can adapt to long-time cyclic lithium extraction operation.

The application provides a binary ionic liquid fiber membrane, a preparation method and application in adsorption of palladium, and belongs to the technical field of adsorption materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate, a first ionic liquid and a second ionic liquid in the first solution to obtain a second solution; the first ionic liquid and the second ionic liquid are alkenyl imidazole salts with different length alkyl side chain molecular structures; adding N,N'-methylene bisacrylamide and benzoyl peroxide into the second solution, heating, stirring and warming to obtain a third solution; performing high-pressure electrospinning on the third solution to obtain a binary ionic liquid fiber membrane; or performing irradiation on the second solution after high-pressure electrospinning to obtain a binary ionic liquid fiber membrane. The binary ionic liquid fiber membrane prepared by the application can efficiently and selectively adsorb and recover palladium from a complex acidic solution, and has the advantages of faster adsorption speed, better selectivity and better salt resistance.

This invention discloses a carbon dioxide gas-sensitive material based on praseodymium lanthanum iron cobalt oxide and its application, relating to the field of carbon dioxide gas sensor technology. The chemical formula of the carbon dioxide gas-sensitive material is Pr x La 1‑x Fe 1‑y Co y O3, where 0

The invention discloses a novel activated carbon adsorbent and a preparation method and application thereof.The preparation method specifically comprises the following steps that S1, sodium percarbonate is added into water to form a sodium percarbonate solution, activated carbon is placed in the sodium percarbonate solution to react, and activated carbon with micropores in the surface is obtained; s2, drying the moisture of the activated carbon with the micropores in the surface to obtain the dried activated carbon with the micropores; s3, spraying hydrogen peroxide on the dried activated carbon with the micropores to obtain a target object; according to the novel activated carbon adsorbent prepared by adopting the method disclosed by the invention, on the basis of keeping the original activated carbon adsorption capacity and the original activated carbon ash content, the adsorption capacity and the adsorption speed of hydrogen sulfide, carbon tetrachloride and other waste gases are greatly improved, so that the application range of the product can be expanded; the quality and the market competitiveness of the product are also improved; in addition, the method is easy to operate and worthy of being vigorously popularized and used.