5 results about "Pyridine hydrochloride" patented technology

The application discloses an MXene aerogel diaphragm and a preparation process thereof, and belongs to the technical field of lithium battery diaphragms. The MXene aerogel diaphragm disclosed by the application contains the following components in parts by weight: 100 parts of modified carboxymethyl cellulose, 5-15 parts of MXene nanosheets, 20-30 parts of a crosslinking agent, 0.1-100 parts of a pH regulator, and 10000-20000 parts of a solvent. The modified carboxymethyl cellulose is prepared by first subjecting sodium carboxymethyl cellulose to a nucleophilic ring-opening reaction with glycidyl methacrylate to obtain GMA-CMC, and then subjecting the GMA-CMC to a Michael addition with 2-amino-4-(trifluoromethyl) pyridine hydrochloride. The MXene aerogel diaphragm disclosed by the application has excellent structural stability, high ionic conductivity and good thermal stability.

This invention discloses a bispyridyl extractant, its preparation method, and its application as a nickel-cobalt extractant. The bispyridyl extractant has the following structure: wherein R is C 12 ~C 25 The alkyl group is prepared by reacting chloromethylpyridine hydrochloride with a primary amine compound via a bimolecular nucleophilic substitution reaction. This bispyridine extractant has stable physicochemical properties, large saturation capacity, good oil solubility of the extract, and good coordination complexing ability for nickel (cobalt) ions. It can be used in combination with DNNSA or P204 to form a synergistic extraction system for selective extraction and separation of nickel and cobalt in complex metal ion solution systems. It can also be used as a single extraction system for efficient extraction and separation of nickel and cobalt in hydrochloric acid systems, showing good prospects for industrial application.

The invention belongs to the field of organic flow battery material synthesis, and particularly discloses a high-solubility HATN material and application thereof in a flow battery. The preparation method comprises the following steps: adding 4-methoxy o-phenylenediamine and cyclohexanehexone hydrate into an organic solvent, refluxing under the protection of nitrogen, cooling, washing with water, washing with methanol, and drying in vacuum; carrying out reflux reaction on the prepared product and pyridine hydrochloride under the protection of nitrogen, cooling, washing with water, and carrying out vacuum drying to obtain an intermediate product; and finally, adding the intermediate product, ethyl 2-bromopropionate and potassium carbonate into an organic solvent to react, precipitating the product by using HCl, washing with water, and drying in vacuum to obtain a final product. The derivative disclosed by the invention has a large pi-pi conjugate plane structure, the redox reaction relates to six-electron transfer, and meanwhile, the solubility of the compound is expanded by grafting a water-soluble functional group, so that the problem of battery stability caused by the solubility is solved. And the flow battery assembled by the composite material has excellent capacity and good stability.

The utility model relates to the technical field of filling devices, in particular to an efficient filling device for chloromethyl pyridine hydrochloride, which comprises a tank body, the tank body is fixed on a base through a mounting frame, a belt conveyor is mounted at the top of the base, a discharge pipe is arranged at the bottom of the tank body, the belt conveyor is positioned below the discharge pipe, a top cover is mounted at the top of the tank body, and a plurality of nozzles are arranged on the top cover. The bottom of the top cover is rotationally connected with a rotating shaft, the top of the rotating shaft is connected with a driving motor, the driving motor is fixed to the top of the top cover, the other end of the rotating shaft is rotationally connected to the end of a discharging pipe, a discharging opening is formed in one side of the bottom of the discharging pipe, and a first spiral blade is installed on the side face of the rotating shaft. The raw materials in the discharging pipe can be cooled through the refrigeration piece, crystallization of the raw materials due to too high temperature during conveying and filling is avoided, the situation that the crystallized raw materials adhere to the second spiral blade to block the discharging pipe is avoided, and the using effect is improved.

The invention relates to a preparation method of an oxadiazine insecticide, and belongs to the technical field of pesticides. The method comprises the following steps: by taking a compound in a formula IV as a raw material, carrying out grinding reaction on the compound and paraformaldehyde by using a ball mill to obtain a compound in a formula II; and then heating and reacting with a compound shown as a formula III in methylbenzene to obtain a compound shown as a formula I. According to the preparation method of the oxadiazine insecticide, pyridine hydrochloride is not used for catalytic reaction during preparation of the compound shown in the formula II, paraformaldehyde is adopted as a reaction raw material, a single product can be obtained through ball milling reaction under the solvent-free condition, and the situation that hydrolysis reaction occurs in the reaction process, and the reaction yield is affected is avoided. Meanwhile, the dosage of paraformaldehyde is reduced, and pyridine hydrochloride is omitted, so that the yield of waste gas and waste liquid is greatly reduced, and the method is suitable for industrial production.