3 results about "Chemistry radiation" patented technology

The invention discloses a method for realizing large-scale rapid synthesis of a metal organic framework by using an electron beam irradiation technology, and belongs to the technical field of radiation chemistry and porous material preparation. Under the conditions of normal temperature and normal pressure, metal salt and a corresponding organic ligand are added into an organic solvent and are mixed according to a set proportion; then, electron beam irradiation is directly accepted, so that the system completes coordination polymerization reaction within a second level, and the efficient large-scale preparation of the metal organic framework material is realized. According to the method, pH adjustment and use of a high-temperature and high-pressure reaction kettle are not needed, the reaction condition is mild, a large-volume precursor system can be continuously treated, and the actual productivity of the metal organic framework is remarkably improved. The method disclosed by the invention has the remarkable advantages of high reaction speed, low energy consumption, simplified process, high yield, capability of realizing gram-level and larger-scale continuous synthesis and the like, and a brand-new technical route is provided for industrialization and green manufacturing of the metal organic framework material.

This invention belongs to the field of traditional Chinese medicine and radiation protection technology. It discloses an active extract of Polygonatum sibiricum and its application in radiation protection preparations. The active extract of Polygonatum sibiricum is prepared by using authentic Polygonatum sibiricum as raw material, through pretreatment, ultrasonic-assisted extraction, column chromatography purification, concentration and drying. With Polygonatum sibiricum extract as the core active ingredient, it is compounded with cyclodextrin, stabilizer and solubilizer to prepare oral capsule radiation protection preparations. This invention is the first to apply the active extract of Polygonatum sibiricum to the field of radiation protection, filling the technological gap of natural Chinese medicine radiation protection. The product is natural, safe and has no side effects, can be used for a long time, has a mature process that can be mass-produced, has a lower cost than existing chemical radiation protection preparations, and has a stable protective effect. It is suitable for various scenarios such as nuclear industry, medical radiation, and daily radiation protection, and has extremely high innovative value and transformation prospects.

The invention provides a nano-silver production process, relates to the technical field of nano-silver production, and aims at solving the problems that existing nano-silver production processing procedures are complex and the productivity is limited, the production process is achieved through radiation chemistry, and the production process comprises the steps that a, a certain amount of silver nitrate is weighed through an upper vessel type electronic balance, distilled water is added in cooperation with a vessel, and the silver nitrate is stirred to be uniform; the method comprises the following steps: a, adding a silver nitrate solution with the concentration range of 0.01-0.1 mol / L into a silver nitrate solution, b, adding a surfactant with the concentration range of 0.6-2.2 g / 100mL, and adjusting the pH value of the solution to 6-7; c, storing the solution formed after blending by adopting a dark container; d, placing the container containing the solution in an irradiation device for irradiation reduction treatment, and performing nitrogen charging treatment on the irradiation device; the preparation method comprises the following steps of 1, irradiating a solution, 2, carrying out irradiation on the irradiated solution, 3, carrying out centrifugation treatment on the irradiated solution, removing a supernatant liquid in the solution, and adding a passivating agent, 3, carrying out alternate washing with deionized water and absolute ethyl alcohol, carrying out centrifugation again, and repeating 3-5 times, and 7, carrying out vacuum drying on the washed substance to obtain black nano-silver powder.