3results about How to "Suitable for scale-up" patented technology

This invention belongs to the field of functional textile materials and interface wettability control technology, and discloses a method for preparing cotton fabric with underwater superoleophobic and oil-water superhydrophobic properties and its application in oil-water separation. The method first dissolves nano-titanium dioxide and n-octanol in ethanol to obtain an alcohol phase mixture; then dissolves dopamine hydrochloride and Tris-HCl in deionized water to obtain an aqueous phase mixture; the two phases are mixed and the pH is adjusted to 8.0–8.5, allowing dopamine to oxidize and self-polymerize, forming a composite coating system synergistically with n-octanol, nano-titanium dioxide, and polydopamine; the cotton fabric is then impregnated and dried at 75–85°C for 2–4 h to obtain a cotton fabric with a surface polydopamine / n-octanol / nano-titanium dioxide composite coating. This fabric exhibits superhydrophilicity and oleophilicity in air, with underwater oil contact angles and oil-water contact angles both greater than 155°. Washing with ethanol, drying, and re-pre-wetting allow for reversible switching between the two superwetting properties. It can be used for the efficient separation of oil-water mixtures and oil-in-water and water-in-oil emulsions under gravity.

This invention discloses a purification method for 2,5-furandicarboxylic acid, comprising the following steps: 1) Pre-treating the crude FDCA to be purified to obtain a pre-treated FDCA salt solution for later use; 2) Adjusting the pH of the pre-treated FDCA salt solution obtained in step 1) with dilute acid until the pH value is 4-5, then adding activated carbon to a beaker for decolorization and impurity removal, and filtering the solution in the beaker after treatment to obtain the FDCA salt solution; 3) Slowly adding strong acid to the FDCA salt solution obtained in step 2) while stirring until the pH value of the solution is <1, then filtering the reacted material to obtain a solid precipitate, washing the solid precipitate with deionized water, and drying it to obtain purified FDCA. The process of this invention is simple, carried out under normal temperature and pressure conditions, has high purification efficiency, and is suitable for large-scale scale-up and production.

This invention provides a biomass remnant char material for reducing tar in tobacco, its preparation method, and its application. The preparation method includes the following steps: mixing a biomass precursor with a chemical reagent solution, drying it, and then micro-expanding it, followed by activation, and then impregnating it with a metal ion solution to obtain the biomass remnant char material for reducing tar in tobacco. The preparation method provided by this invention utilizes the advantages of the multi-scale remnant structure of natural biomass, employing component degradation and microwave expansion to reshape its internal nano-microstructure. Through a physical activation process, well-developed hierarchical channels are constructed, achieving efficient anchoring of metal heteroatoms, enhancing the diffusion and adsorption behavior of tar particles in the remnant char material, and achieving a match between the transport and adsorption processes, thereby effectively improving the tar reduction performance of the product.