6results about How to "Synthetic mild" patented technology

The invention relates to a bimetallic selenide heterostructure and preparation and application thereof. The preparation method comprises the following steps: firstly, synthesizing a selenium nanorod as a template and a selenium source, then coating the selenium nanorod with a bimetallic organic framework (MOF), and finally synthesizing a heterostructure in which bimetallic selenide nanoparticles grow on a hollow carbon tube through in-situ pyrolysis. Compared with the prior art, the method has the advantages that the selenium nanorod is ingeniously used as a template and a selenium source of a one-dimensional structure, and various bimetallic selenide heterostructures can be formed by different combinations of metals through flexible matching of the bimetallic MOF. The bimetallic selenide heterostructure is applied to an electrode material of a secondary battery, and shows excellent energy storage performance of high capacity, high rate and long circulation.

The invention discloses a method for in-situ growth of a ZIF-7 film layer on the surface of a magnesium alloy micro-arc oxidation film layer, and the method specifically comprises the following steps: step 1, treating the surface of a magnesium alloy workpiece to be processed to make the surface smooth; 2, the workpiece treated in the step 1 serves as an anode to be placed in electrolyte, graphite serves as a cathode, a direct-current power source is adopted for conducting micro-arc oxidation treatment on the workpiece in a constant-current mode, a micro-arc oxidation film layer is formed on the surface of the workpiece, and then cleaning and blow-drying are conducted; step 3, putting the workpiece prepared in the step 2 into a ZIF-7 seed crystal solution, keeping the temperature at 110-130 DEG C for 180-300 minutes for in-situ growth, and taking out, cleaning and drying the workpiece after the growth is finished; wherein the ZIF-7 seed crystal liquid is prepared from zinc nitrate hexahydrate and benzimidazole, and the solvent is prepared from N, N-dimethylformamide and methanol; in the ZIF-7 seed crystal liquid, the concentration of zinc nitrate hexahydrate is 0.5 to 2.5 g / L, and the concentration of benzimidazole is 0.5 to 2.5 g / L.

The invention relates to a preparation method of nicardipine hydrochloride, and belongs to the technical field of medicines. Different from the previous reported reaction under an alkaline condition in the synthesis of nicardipine, the method disclosed by the invention has the advantages that the reaction is carried out under an acidic condition, the reaction is milder, the rate is higher, and the nicardipine solid with higher purity can be obtained through post-treatment. The nicardipine hydrochloride with high purity can be obtained by reacting nicardipine with hydrochloric acid to form salt and crystallizing, and the method is suitable for industrial production.

The invention discloses a preparation method of a foaming aerogel elastomer with photo-thermal and hydrophilic integrated design, which comprises the following steps: (1) adding copper acetylacetonate into polyether polyol, and stirring to obtain a uniform dispersion liquid; (2) rapidly adding diphenylmethane diisocyanate into the dispersion liquid, rapidly and violently stirring by using a glass rod, foaming at a constant temperature of 30 DEG C, and curing for 4 hours; and (3) cutting and molding a sample obtained in the step (2), putting the sample into a (NH4) 2S solution with the concentration of 14wt%, soaking and reacting for 12 hours, repeatedly extruding and washing unreacted raw materials after the reaction is completed, and drying to obtain the foamed aerogel elastomer. According to the integrated design, perfect unification of the photo-thermal layer and the hydrophilic layer is achieved, and overflow of salt in the evaporation process is successfully inhibited; and meanwhile, the mechanical stability problem of the photo-thermal evaporator material is solved.

This application provides a method for the electrocatalytic synthesis of multisubstituted ribose derivatives, comprising using an organotin compound as a catalyst to catalyze the reaction of the compound shown in formula (I) under electrochemical conditions to obtain the compound shown in formula (II); wherein, R 1 C is an optional replacement 1‑10 hydrocarbon group; R 2 and R 3 One of them is -C(=O)OR, and the other is -H; R is the C that can be substituted. 1‑4 Alkyl; R 4 C is a hydrogen atom or an optional substituted C 1‑10 The method involves the use of a hydrocarbon group as the reaction solvent, a reaction temperature of 40-80℃, and a quaternary ammonium bromide as the electrolyte. This method enables the efficient and highly stereoselective synthesis of tetrasubstituted riboses modified with 2'- and 3'-ester groups, and is easily scaled up, showing promising prospects for industrial application. The products obtained by this method possess excellent potential for later derivatization and can be used to synthesize various novel nucleoside analogs, demonstrating significant application value in the development of antiviral and antitumor drugs.

The utility model discloses a preparation device of a composite porous biochar material, and relates to the technical field of biochar preparation. Comprising a tank body, a raw material inlet, a stirring motor, an exhaust pipe and a vacuum pump are arranged at the top of the tank body, and the exhaust pipe is connected with the vacuum pump; a stirring rod in power connection with the stirring motor is arranged in the tank body, and a spiral blade is arranged on the stirring rod; a heating assembly and a temperature sensor are arranged on the inner wall of the tank body; a liquid discharge port is formed in the bottom of the tank body, a discharge port is formed in the bottom of the outer wall of the tank body, a filter screen is further arranged in the tank body, and the filter screen is located above the liquid discharge port and is flush with the bottom of the discharge port; and a pure water inlet pipe and a LiBr solution inlet pipe are arranged at the top of the outer wall of the tank body. By adopting a mild LiBr etching technology, agricultural wastes are successfully converted into advanced biochar base materials, and the problem of high energy consumption of a traditional high-temperature pyrolysis method for preparing activated carbon is solved.