10 results about "Potassium ethoxide" patented technology

Provided is a method for removing trace moisture from carbon dioxide. The method comprises the following steps: firstly uniformly mixing tetrapropylammonium hydroxide with deionized water to obtain solution A; dissolving potassium metaaluminate in solution A to obtain solution B; dropwise adding tetraethyl orthosilicate to solution B, and stirring and mixing to obtain solution C; transferring solution C to a hydrothermal kettle for a reaction for at least 2 hours, taking out the reactant after the reaction is finished, washing the reactant with water, and centrifugally separating and drying the reactant; continuing heating to 550ºC and performing calcination for at least 2 h to obtain K-ZSM-5; preparing an ethanolic solution of potassium ethoxide, infiltrating the K-ZSM-5 with the ethanolic solution of potassium ethoxide, and removing ethanol from the infiltrated K-ZSM-5 under vacuum to obtain an adsorbent; and filling an adsorption column with the adsorbent, introducing carbon dioxide into the adsorption column, and removing water from the carbon dioxide by means of a chemical adsorption method. The adsorbent preparation method disclosed in the present invention is simple and involves readily available materials; high temperature is not required throughout an impurity removal stage; and the impurity removal method is simple and has high efficiency, and the moisture content can be reduced to 20 ppb or less.

The invention relates to a preparation method of a doped modified lithium-titanium-aluminum-phosphorus solid electrolyte, and belongs to the technical field of solid electrolyte materials. Adding lithium carbonate, titanium dioxide, aluminum dihydrogen phosphate, zinc oxide, the modified zinc ion stabilizer and absolute ethyl alcohol into a ball milling tank for ball milling, drying, sieving and granulating to obtain a granular material; placing the granular material in a muffle furnace, and performing high-temperature sintering, grinding and sieving to obtain the doped modified lithium-titanium-aluminum-phosphorus solid electrolyte. The modified zinc ion stabilizer is prepared from 2-[(thiophene-2-yl methoxy) methyl] ethylene oxide, DMF (Dimethyl Formamide), octa (aminophenyl trioxosilane), potassium ethoxide, zinc maleate and dibutyltin dilaurate; according to the solid electrolyte prepared by the invention, the room-temperature ionic conductivity is remarkably improved, and the solid electrolyte has excellent cycle performance and is suitable for a high-energy-density solid-state lithium ion battery.

The invention discloses a plant polyphenol-based fixing agent and a preparation method and application thereof, and relates to the technical field of drilling solid waste treatment.The plant polyphenol-based fixing agent is obtained by uniformly mixing plant polyphenol with a catalyst and then adding phenyl-containing diglycidyl ether for a reaction, the plant polyphenol contains one or more benzene ring structures and has phenolic hydroxyl functional groups; the catalyst is one or more of sodium methoxide, potassium methoxide, sodium ethoxide and potassium ethoxide, and the addition amount of the catalyst is 1-5wt% of the total mass of the plant polyphenol and the phenyl-containing diglycidyl ether; the mass ratio of the plant polyphenol to the phenyl-containing diglycidyl ether is (2-10): 1. The technical problems that in the prior art, drilling solid waste treatment is high in cost, long in period, short in fixing time, high in leachate pollutant content and the like are solved.

The present invention is 1~3 Regarding the process for converting alcohol to higher alcohol, the process comprises the steps of: 1~3 a. premixing an alcohol, a catalyst, and a multicomponent solvent system to form a liquid mixture; and b. heating the liquid mixture, thereby obtaining a higher alcohol, wherein the multicomponent solvent system comprises at least a basic aqueous hydrocarbon solvent phase comprising at least two different hydrocarbons, the solvent comprising a base selected from the group comprising potassium hydroxide, sodium hydroxide, potassium ethoxide, sodium ethoxide, potassium t-butoxide, sodium t-butoxide, or a combination thereof, e.g., a eutectic mixture of sodium hydroxide and potassium hydroxide, and the catalyst is (HL)M(OH) n (H2O) m type complexes and activated carbon.

The invention belongs to the technical field of polyester recovery, and relates to a PET / PTT blended fabric depolymerization recovery method, a basic catalyst and dimethyl carbonate are adopted, and the basic catalyst is composed of a strong basic catalyst and a weak basic catalyst in a mass ratio of 2: 8-8: 2; the strong alkaline catalyst is one or more of sodium hydroxide, potassium hydroxide, potassium carbonate, sodium carbonate, sodium methoxide, potassium methoxide, sodium ethoxide and potassium ethoxide, and the weak alkaline catalyst is one or more of potassium bicarbonate, sodium bicarbonate and sodium dihydrogen phosphate; the depolymerization recovery method disclosed by the invention is good in separation effect, the separation difficulty and the product loss are reduced, and the product purity is high.

The application discloses a method for removing trace water from carbon dioxide, which comprises the following steps: firstly, mixing tetrapropylammonium hydroxide and deionized water uniformly to obtain solution A; dissolving potassium aluminate in the solution A to obtain solution B; adding tetraethyl orthosilicate into the solution B drop by drop, stirring and mixing; transferring the solution C into a hydrothermal kettle to react for at least 2 hours; after the reaction is completed, taking out the reaction product, washing with water, centrifugal separation and drying; continuously heating to 550 DEG C, calcining for at least 2 hours to obtain K-ZSM-5; preparing an ethanol solution of potassium ethoxide, immersing the K-ZSM-5 in the ethanol solution of potassium ethoxide, removing ethanol from the immersed K-ZSM-5 under vacuum, and obtaining an adsorbent; filling the adsorbent into an adsorption column, passing carbon dioxide into the adsorption column, and removing water in the carbon dioxide by using a chemical adsorption method. The preparation method of the adsorbent is simple, the material is easy to obtain, the whole impurity removal stage does not need high temperature, the impurity removal method is simple, the efficiency is relatively high, and the water content can be reduced to below 20 ppb.

The invention discloses an industrial preparation method of p-hydroxybenzonitrile, and belongs to the technical field of organic synthesis. The method comprises the steps that p-chlorobenzonitrile and organic alkali react in a mixed solvent under the action of a composite catalyst to obtain p-hydroxybenzonitrile, the reaction temperature ranges from 60 DEG C to 100 DEG C, the reaction pH ranges from 5.5 to 6.5, and the reaction time ranges from 8 h to 15 h; the mixed solvent is composed of methanol and a polar aprotic solvent according to a volume ratio of 2-4: 1; the composite catalyst is formed by compounding lithium chloride and an organic catalyst according to the mass ratio of (0.5-3.0): 1, and the organic catalyst is selected from one or more of a quaternary ammonium salt catalyst, a crown ether catalyst and tetrabutylammonium bromide; the molar ratio of the p-chlorobenzonitrile to the organic alkali to the lithium chloride is 1: (2.8-3.2): (0.05-0.2); the organic base is selected from sodium methoxide, potassium ethoxide or potassium tert-butoxide. Compared with the prior art, the reaction is performed under normal pressure, the reaction temperature is low, the reaction time is short, and the method is suitable for industrial production.

The invention provides a synthetic method of anhydrous potassium citrate, and relates to the technical field of organic salt crystallization. The synthesis method provided by the invention comprises the following steps: mixing citric acid and potassium ethoxide in absolute ethyl alcohol to react, and separating to obtain a potassium citrate crude product; dissolving the potassium citrate crude product in the eutectic solvent to prepare a potassium citrate crude solution; adding potassium citrate microcrystals into the potassium citrate crude solution, cooling, crystallizing and separating to obtain potassium citrate crystals; and immersing the potassium citrate crystal in molten citric acid, aging, separating, and washing to obtain the anhydrous potassium citrate. The synthesis method provided by the invention can effectively improve the particle size uniformity and fluidity of the anhydrous potassium citrate, and at the same time helps to improve the purity of the anhydrous potassium citrate.

The invention discloses a synthetic method of o-hydroxybenzonitrile, and belongs to the technical field of organic synthesis. The method comprises the following steps: in a solvent, o-chlorobenzonitrile and organic alkali react under the action of a composite catalyst to obtain o-hydroxybenzonitrile, the reaction temperature is 90-100 DEG C, the reaction pH is 5.5-6.5, and the reaction time is 8-15 hours. The solvent is gamma-valerolactone; the composite catalyst is formed by compounding lithium chloride and an organic catalyst according to the mass ratio of (0.4-2.0): 1, and the organic catalyst is selected from one or more of a quaternary ammonium salt catalyst, a crown ether catalyst and tetrabutylammonium bromide; the molar ratio of o-chlorobenzonitrile to organic alkali to lithium chloride is 1: (2-3): (0.05-0.2); the organic base is selected from sodium methoxide, potassium ethoxide or potassium tert-butoxide. Compared with the prior art, the reaction is performed under normal pressure, the reaction temperature is low, the reaction time is short, and the method is suitable for industrial production.