6results about How to "Preparation method green" patented technology

The application discloses a preparation method and application of a pyridine derivative compound, belongs to the technical field of chemical synthesis, and has the structural formula as shown in the following formula: wherein the R1 group is one of 4-CH3, 4-OCH3, 4-F, 4-Cl and 4-Br; the R2 group is one of -C5H9 and -C6H 11 ; and the R3 group is one of 3-F, 3-H and 3-CH3. The pyridine derivative compound prepared by the application has a pyridine ring as a structural center and has very important medicinal value and is widely applied in the fields of antitumor, anticancer, antibacterial and other biological medicines.

The application belongs to the technical field of methanol preparation, and particularly relates to a device and a preparation method for preparing methanol by combining carbon dioxide hydrogenation with chemical chain combustion, which comprises a power generation system, an electrolytic cell, a chemical chain combustion reactor, a pure oxygen supplement combustion chamber and a methanol reaction unit. The power generation system is connected with the electrolytic cell. Oxygen generated by electrolysis of the electrolytic cell is connected with the chemical chain combustion reactor through a first pipeline. Oxygen generated by electrolysis of the electrolytic cell is connected with the pure oxygen supplement combustion chamber through a second pipeline. The chemical chain combustion reactor is connected with a raw material pipeline. The top of the chemical chain combustion reactor is connected with the pure oxygen supplement combustion chamber through a third pipeline. The pure oxygen supplement combustion chamber is connected with the methanol reaction unit through a fourth pipeline. Hydrogen generated by electrolysis of the electrolytic cell is connected with the methanol reaction unit through a fifth pipeline. Reaction products are discharged through a sixth pipeline.

The application discloses a kind of protein sponges of fast hemostasis and preparation method and application thereof.The protein sponge is prepared by modified protein irradiation crosslinking, and the structural formula of the modified protein is as shown in formula I: R1 is substituted alkyl;Substituted substituent group of substituted alkyl is selected from one or more of carboxyl, carbonyl, amido, amino, ester group;R2 is group containing carbon-carbon double bond;Substitution degree of R2 is 10%~80%;Substitution degree of R1 is 5%~20%.The present application introduces carbon-carbon double bond group and hydrophilic group at the primary amine position of protein, imparts the crosslinking ability of protein and enhances the hydrophilic performance of protein, by limiting the substitution degree of R1 and R2, the rate of protein sponge gelation after water absorption is regulated, and the controllable adjustment of sponge skeleton swelling speed and sponge channel contraction is realized.Compared with existing sponge, the protein sponge of the present application has good flexibility, more excellent efficiency of enriching blood clotting components, and low risk of rebleeding.

The application relates to the technical field of organic pollutant degradation, and discloses a preparation method of a copper iron sulfide bimetallic catalyst, which comprises the following steps: under anaerobic conditions, copper chloride and iron powder are added into an acid buffer solution, a sodium sulfide solution is added after the mixture is uniformly mixed, and the copper iron sulfide bimetallic catalyst is obtained after reaction and filtration; the molar ratio of the copper chloride and the iron powder ranges from 0.3 to 1.3; and the molar ratio of the sodium sulfide and the iron powder ranges from 0.046 to 0.46. The copper iron sulfide bimetallic catalyst containing the main component CuFeS2 is prepared by exploring the feeding molar ratio of copper, iron and sulfur. The catalytic performance of the copper iron sulfide bimetallic catalyst prepared by the method is effectively improved. After the copper iron sulfide bimetallic catalyst is used to treat organic wastewater, the removal efficiency of the organic matter is maintained stable, and there is no leaching of metal Cu and Fe. The catalyst has the advantages of low treatment cost, simple operation condition and high efficiency, and provides a new method for low-carbon treatment of organic wastewater.

The invention discloses a porous carbon material and a template-free preparation method thereof. The specific surface area of the porous carbon material is not less than 500 m < 2 > / g, and the total content of pyrrole nitrogen and pyridine nitrogen accounts for not less than 85% of the total nitrogen element; the method comprises the following steps: dissolving carboxylated chitosan and glucosamine hydrochloride in water to obtain a mixed solution; carrying out hydrothermal reaction on the mixed solution to form a hydrogel precursor with a gap structure; and drying the precursor, and carrying out carbonization treatment in an inert atmosphere to finally obtain the porous carbon material rich in pyrrole nitrogen and pyridine nitrogen. The method does not need to use any template agent and etching agent, and is simple in process, low in cost, green, environment-friendly and easy for large-scale production. The porous carbon material prepared by the invention has high specific surface area and high content of electrochemical active nitrogen species, and the lithium ion battery silicon-carbon negative electrode material prepared by taking the porous carbon material as a substrate shows excellent electrochemical performance.

The present application provides a preparation method of a cellulose-based fluorescent material. The method comprises: esterifying propynoic acid with cellulose to obtain fluorescent cellulose propynoate, and then performing cross-linking reaction with a polyhydroxy compound to prepare cross-linked fluorescent cellulose; or esterifying propynoic acid with a polyhydroxy compound to obtain fluorescent polyhydroxy propynoate, and then performing cross-linking with cellulose to prepare cross-linked fluorescent cellulose. The reaction process is green and efficient, and the cellulose-based fluorescent material with stable fluorescent properties can be realized without additional addition of a fluorescent agent; the cellulose-based fluorescent material can be used in the fields of composite materials, optics, anti-counterfeiting and the like.