2results about How to "With large-scale production" patented technology

The invention discloses a nano porous nickel electrocatalyst material as well as a preparation method and application thereof. Belongs to the technical field of electrolyzed water hydrogen production catalysts. According to the method, a nickel net substrate is subjected to pretreatment, electrogalvanizing, high-temperature alloying and chemical dealloying, and finally the nano-porous nickel electrocatalyst material growing on the nickel net is obtained. The electrocatalyst material prepared by the method has a uniform three-dimensional nano porous structure, the thickness of a porous layer is 10-70 [mu] m, and the aperture is 100-500 nm. As an alkaline electrolytic water hydrogen evolution reaction cathode catalyst, the material has high specific surface area and rich active sites, and shows lower overpotential and excellent long-term stability. The method is simple in technological process, raw materials are easy to obtain, and the method has large-scale production potential and has wide application prospects in the field of hydrogen production through water electrolysis.

This invention relates to a method for preparing recycled polyesteramide based on an ester-amide exchange reaction. The invention first involves ester-amide exchange of waste polyamide to obtain polyamide esters, then purifying the polyamide esters to remove color and impurities, and finally obtaining recycled polyesteramide through vacuum polycondensation and de-alcoholization. Compared with existing technologies, this invention eliminates the need to depolymerize waste polyamide into caprolactam monomers, resulting in lower energy consumption, relatively mild reaction conditions, and simple operation. It can be completed using conventional reaction equipment and has the potential for large-scale production. This invention achieves efficient recycling of waste polyamide and high-value-added regeneration of polyesteramide, providing technical support for the recycling of waste polyamide textiles.