3results about How to "Go green" patented technology

The application discloses a kind of Ni doped nano SnO2 semiconductor HCHO sensing materials and preparation method and application thereof, and the preparation method of sensing material includes the following steps: step one, Sn salt-Ni salt solution is configured;Step two, using supercritical hydrothermal synthesis (CSHS) reaction device, Sn salt-Ni salt solution is contacted with supercritical water and crystallization is generated nano doped oxide, and reaction liquid is discharged and collected after cooling, and the crystalline material is separated, i.e. the Ni doped nano SnO2 semiconductor HCHO sensing material of the application.The Ni doped nano SnO2 semiconductor HCHO sensing material prepared by the method of the application has good structural consistency and excellent sensing performance.

A modular six-dimensional mortise and tenon structure four-in-one composite panel and panel forming machine are disclosed. The panel includes wall panels and floor slabs. Each wall panel and floor slab comprises a panel, supporting keel, insulation layer, and edge-sealing steel components. Supporting keels are installed inside the inner and outer panels, and edge-sealing steel components are installed on all four sides of the panels. Insulation material is filled into the wall panel formed by the panel and edge-sealing steel components to form an insulation layer. The edge-sealing steel components include shaped steel and special-shaped tubes. The left and right sides of the wall panel are edge-sealed with special-shaped tubes, and the top and bottom ends are edge-sealed with shaped steel. The grooves formed by the sidewalls of the special-shaped tubes correspond to the shaped steel. The four sides of the floor slab are edge-sealed with special-shaped tubes. This composite panel is a green, environmentally friendly, low-carbon, energy-saving, and movable modular six-dimensional mortise and tenon structure that can be quickly and repeatedly assembled and disassembled. It integrates structure, enclosure, insulation, and decoration into one unit. A house can be constructed by directly splicing the composite wall panels and floor slabs, featuring convenient assembly and disassembly, high efficiency, and good structural stability.

This invention belongs to the field of chemical synthesis technology, specifically relating to a method for preparing 2-methyl-1H-phenylenehydride. The method includes the following steps: using acetic acid and 1,8-diaminonaphthalene in a molar ratio of 2.5~5.5:1 as reactants, and water as the reaction medium, at 100℃~185℃, one amino group of 1,8-diaminonaphthalene undergoes a condensation reaction with the carboxyl group of acetic acid, removing one water molecule to obtain a product intermediate containing an amide bond. The other amino group on the intermediate undergoes an intramolecular cyclization reaction with the carbonyl group in the amide bond, removing one water molecule to obtain a crude product. The crude product is then purified to obtain the 2-methyl-1H-phenylenehydride. The 2-methyl-1H-phenylenehydride prepared using the method of this invention can achieve a purity of up to 98%.