2results about How to "Low cost application" patented technology

The application discloses a kind of catalysts for hydrogen storage material and its preparation method and application, belong to hydrogen storage material and its preparation technical field.The present application is to solve the problems such as high dehydrogenation temperature of existing magnesium-based solid hydrogen storage material and slow low-temperature kinetics.The present application is prepared by using nickel chloride hexahydrate, acetylacetone manganese, polyether P123, polyether P127, dopamine hydrochloride, 1,3,5-trimethylbenzene and ammonia as raw materials to obtain carbon as carrier wrapped with elemental Ni nanoparticle catalyst with a large number of edge dislocations, and is applied to Mg-based hydrogen storage material by ball milling method.The introduced dislocation has a dual role: not only directly accelerates the dissociation of H2 molecule, but also indirectly improves the activity of catalytic phase (Mg2NiH4 / Mg2Ni).The preparation process of the composite hydrogen storage material provided by the present application is simple and mature, and the raw materials are cheap and easy to obtain, only a small amount of MNC needs to be added to greatly improve the hydrogen storage performance of Mg, and it is convenient for large-scale industrial production.

The present disclosure relates to a multi-channel distributed liquid nitrogen jet cooling system and method for hot forming, relating to the field of forming technology. The system comprises a liquid nitrogen storage and pressure stabilizing module, a plurality of flexible standard cooling modules and a control module. The method divides and extracts targeted cooling feature points based on the workpiece thinning rate, realizes accurate mapping of the thinning area and the flexible standard cooling module, and dynamically triggers jet cooling of the corresponding channel according to the thinning rate change curve; the control module calculates the flash evaporation degree based on real-time pipeline temperature and pressure data, dynamically compensates the electric regulating valve opening, and maintains the actual liquid cooling capacity stable when the system undergoes phase change. The system can automatically merge channels based on the spatial and temporal characteristic differences of each region, and flexibly match different cooling conditions such as dynamic closed loop, periodic interruption or fixed parameter static. Through zoning, grading and multi-condition coordinated control, the problems of uneven cooling of complex components and multi-channel parallel interference are solved, and efficient, accurate and low-cost application of liquid nitrogen jet is realized.