13 results about "Potassium hydride" patented technology

The invention discloses a preparation method of 3-quinuclidinone hydrochloride, which comprises the following steps: carrying out temperature control reaction on 4-picolinic acid and chloroacetic acid under alkaline water conditions to obtain an aqueous solution of a compound a, and directly entering the next reaction without post-treatment after the reaction is finished; adding a reducing agent alkaline water system into the aqueous solution of the compound a, controlling the temperature to react, controlling the temperature to adjust the pH value to 5-5.5 after the reaction is finished, extracting with n-butyl alcohol, and drying to obtain an n-butyl alcohol solution of a compound b, and directly entering the next reaction step; wherein the reducing agent is one of sodium borohydride and potassium borohydride; dropwise adding thionyl chloride into an n-butyl alcohol solution of the compound b, controlling the temperature to react after dropwise adding is ended, and concentrating to remove the solvent and unreacted thionyl chloride after the reaction is ended, so as to obtain a compound c; carrying out Dieckmann condensation reaction on the compound c at controlled temperature under the condition of organic alkali by using toluene as a solvent, carrying out hydrochloric acid quenching reaction after the reaction is finished, and directly carrying out next-step reaction after extracting and removing impurities from a water phase containing a hydrochloride solution of a compound d by using toluene; and carrying out a decarboxylation reaction on the compound d in a hydrochloric acid aqueous solution at controlled temperature, after the reaction is finished, adjusting the pH value to 10-13, extracting, and salifying to obtain a target compound TM, namely 3-quinuclidinone hydrochloride. The preparation method of 3-quinuclidinone hydrochloride provided by the invention has the advantages of economical and easily available raw materials, mild reaction conditions, efficient reaction, simple operation and low cost, and is suitable for industrial application.

The present application belongs to the technical field of wastewater treatment, and particularly relates to a method for removing total nitrogen in wastewater. Iron salt and carbon material containing hydroxyl and carbonyl are added into water, and then potassium borohydride is added, and the obtained mixture is freeze-dried under argon protection atmosphere to obtain iron-carbon filler; the iron-carbon filler is added into wastewater, the wastewater is adjusted to be weakly acidic, and stirring reaction is carried out for 0.5-1.5 h to obtain reduced effluent; persulfate is added into the reduced effluent, the wastewater is adjusted to be alkaline, and stirring reaction is carried out for 0.5-1.5 h, and then solid-liquid separation is carried out, and the obtained supernatant is treated effluent. The present application can remove total nitrogen in wastewater only by using iron-carbon filler and persulfate at normal temperature and pressure, and has the advantages of fast conversion rate, strong anti-interference ability, no secondary pollution and the like compared with traditional chemical oxidation-reduction technology; the reaction has wide original sources, low price, simple operation, and is environment-friendly, and has obvious economic and environmental benefits.

The invention provides a method for deeply removing oxygen in titanium system powder, which comprises the following steps: mixing titanium system powder to be deoxidized, a deoxidizing agent and an electron transfer agent, and carrying out deoxidation reaction to obtain a deoxidized material; the deoxidizing agent is a calcium deoxidizing agent or a sodium deoxidizing agent, the calcium deoxidizing agent is metal calcium and / or calcium hydride, the sodium deoxidizing agent is metal sodium and / or sodium hydride, and the electron transfer agent is anhydrous magnesium chloride; or the deoxidizing agent is a potassium deoxidizing agent or a barium deoxidizing agent, the potassium deoxidizing agent is metal potassium and / or potassium hydride, the barium deoxidizing agent is metal barium and / or barium hydride, and the electron transfer agent is anhydrous magnesium chloride and / or anhydrous calcium chloride. According to the method, deep removal of oxygen in the titanium-series powder can be achieved, the obtained deoxidized material is subjected to acid pickling or water washing and then acid pickling, and the deoxidized titanium-series powder can be directly obtained.

This invention provides a Fenton oxidation reaction promoter and a method for promoting the Fenton oxidation reaction. The promoter, by weight, comprises the following components in parts: 10-50 parts of a metal salt, 5-35 parts of a reducing agent, and 0-20 parts of an auxiliary agent. The amount of metal in the metal salt is not less than the amount of reducing agent, and the metal salt is selected from at least one of zinc or copper salts. The reducing agent is selected from at least one of sodium sulfide, sodium hydrosulfide, hydrogen sulfide, potassium sulfide, and potassium hydrosulfide. The auxiliary agent is selected from at least one of xanthic acid derivatives and dithiocarbamate derivatives. The Fenton oxidation reaction promoter is dissolved or suspended in water and added to the Fenton oxidation reaction process. It can promote the reduction rate of ferric iron, improve the Fenton oxidation effect, reduce the amount of iron added in the Fenton reaction, and thus reduce the yield of iron sludge. This promoter has the characteristics of low dosage, good effect, and simple and convenient use.

The application discloses a preparation method of an anode material for treating organic wastewater, and comprises the following steps: (1) dissolving silver nitrate, ammonia water, sodium hydroxide and formaldehyde in deionized water to obtain a precursor solution, then fixing a commercial electrode in the precursor solution, and performing heating and stirring treatment to obtain an Ag / commercial electrode sheet; (2) preparing a plating solution by using nickel salt, ethylenediamine, potassium borohydride and sodium hydroxide, then fixing the Ag / commercial electrode sheet obtained in the step (1) in the plating solution, and performing heating and stirring treatment, and then performing washing and drying to obtain the anode material. When the electrode material is used for electrocatalytic oxidation treatment of 3-aminomethyl-3, 5, 5-trimethylcyclohexylamine wastewater, the ammonia oxidation rate is higher, and the COD and NH4-N values of the organic wastewater can be effectively reduced. The application further discloses the anode material obtained by the preparation method and application thereof.

The invention relates to a production method for improving photo-thermal stability of a chloromethyl ethyl ether industrial product, and belongs to the technical field of chloromethyl ethyl ether processing.The preparation of an intermediate 1 comprises the steps that 80-120 mL of ethyl alcohol, 20-25 g of 3, 5-di-tert-butyl-4-hydroxybenzaldehyde and 6-10 g of n-butylamine are added into a 250 mL four-opening bottle provided with a backflow water diversion device, the temperature is increased to 60 DEG C, a reaction is carried out for 1 h, and an intermediate 2 is obtained; cooling to 0 DEG C by adopting an ice salt bath, adding 1-3g of potassium borohydride in batches, keeping the temperature at 0 DEG C, continuing to react for 0.5 hour, and adding a 5% citric acid aqueous solution to adjust the pH value to 2.0-3.0; the special photo-thermal stabilizer is synthesized and compounded with the epoxidized soybean oil, a single stabilizer and a special formula free of chloromethyl ether are generally adopted in the traditional method, the photo-thermal stabilizer containing the hindered phenol and piperazine structure is synthesized by the method, synergistic protection of light shielding, thermal stability and acid capture is achieved after compounding, and the product performance is remarkably improved; and the purity retention rate is 95-97% after 168h of ultraviolet aging.

This invention discloses a method for synthesizing monoclinic hafnium dioxide nanorods. The method uses hafnium oxide and potassium hydrofluoric acid as raw materials, and synthesizes uniform monoclinic hafnium dioxide nanorods through a two-step process of high-temperature calcination and subsequent hydrolysis. This method utilizes common, simple, and readily available raw materials, has a short reaction time and low reaction temperature, avoids complex procedures, and simplifies the process. The synthesized monoclinic hafnium dioxide nanorods are uniform in size and exhibit minimal agglomeration. This invention also discloses the application of the monoclinic hafnium dioxide nanorods synthesized by the above method in coating plastic or metal surfaces.

This invention discloses a method for preparing hydrogen fluoride using ammonium fluoride. Specifically, ammonium fluoride and potassium fluoride are dissolved in water to obtain a mixed solution. After the mixed solution reacts at 100℃~200℃, solid-liquid separation is performed. The solid is dried to obtain potassium fluoride solid, while the liquid is returned to the initial ammonium fluoride and potassium fluoride reaction system for recycling. Potassium fluoride and sodium fluoride are mixed and hydrogen fluoride gas is prepared under molten conditions. After the reaction, the residual solid is dissolved in water, filtered, and the filtrate is returned to the ammonium fluoride and potassium fluoride reaction system for recycling. The filter cake is dried and returned to the potassium fluoride and sodium fluoride reaction system for recycling. This method can realize material recycling and solves the problems of low raw material utilization and serious material waste in existing hydrogen fluoride preparation processes.

This invention discloses a method for preparing tin dioxide nanofilms. The method uses micron-sized tin dioxide powder and potassium hydrofluoric acid as raw materials, and synthesizes tin dioxide nanofilms through a two-step process of high-temperature calcination and hydrolysis precipitation. The entire process utilizes simple and readily available raw materials, reducing raw material costs. The synthesized tin dioxide nanofilms exhibit varying densities, with small and uniformly distributed nanoparticles and minimal particle aggregation. The synthesis process is relatively simple, with extremely short reaction times and low reaction temperatures, avoiding complex chemical processes and simplifying the overall process.

The application discloses a kind of synthesis process of sulfonyl fluoride compound;Under the protection of nitrogen, containing sulfhydryl compound and dimethyl sulfonium bromide are reacted under the action of base, oxidizing reagent, fluorinating reagent, and sulfuryl fluoride compound is generated by oxidation fluorination reaction;Among them, the base is 2,4,6-trimethylpyridine, the oxidizing agent is sodium chlorite, the fluorinating reagent is potassium hydrogen fluoride, and the sulfhydryl compound is aliphatic mercaptan or contains aromatic ring or heterocyclic thiol;The method of the application has mild conditions, simple and readily available raw materials, simple operation, and has high application value.

The application provides a skin glass composition, the skin glass and a preparation method and application thereof. The composition comprises, in terms of mass percentage: 60-75% of quartz sand, 1.5-15% of boric acid, 1-5% of aluminum oxide, 1-10% of sodium carbonate, 1-8% of potassium bifluoride, 1-8% of calcium fluoride, 0-5% of basic magnesium carbonate, 0-8% of lithium carbonate, 0-5% of zinc oxide and 0-2% of cerium oxide; the total content of impurities Fe, Cu and Mn in the raw materials is less than or equal to 3ppm, and the total content of impurities Nd, Pr, U, Er, Eu, Tb and Dy is less than or equal to 2ppm. The technical problem to be solved is how to prepare the skin glass, so that the skin glass can simultaneously meet the requirements of wide spectrum response, radiation resistance and low refractive index, and the spectral transmittance is greater than or equal to 75% in the wavelength range of 330-2000nm under the thickness of 100mm; the skin glass is applied to the environment of high radiation and wide spectrum detection in the field of aerospace, so that the imaging clarity and service life of the glass can be effectively improved, and long-distance detection is realized.

This invention belongs to the field of molecular synthesis and materials technology, and discloses a method for preparing small molecule materials based on benzothiophene-benzodithiophene (DBDTT) and benzoselenophene-benzodiselenophene, as well as their applications. The method includes: using 1-chloro-2-iodobenzene or 1-chloro-2-bromobenzene and trimethylethynylsilane as raw materials, after a stalk coupling reaction, removing the TMS (trimethylsilyl group) with potassium hydrofluoric acid to obtain a key intermediate; using S8 or Se as a sulfur source or selenium source, and potassium carbonate as a base, a series of fused-ring thiophene / selenophene small molecule materials are synthesized through a cascade cyclization reaction. The substrates of this invention are simple to synthesize, the raw materials are inexpensive and readily available; no metals are involved; the reaction can be carried out under air conditions; the reaction efficiency is high, with three rings fused simultaneously in a single step; the yield is moderate, and even at a large scale (10 mmol), the yield can still reach 58%. Therefore, this method is suitable for industrial production.

The present application relates to a kind of synthesis methods of reducing ambrox, comprising the following steps: ambrinol is dissolved in organic solvent, then adding catalyst aluminum trichloride, quaternary ammonium salt catalyst, then stirring condition is at least divided into 3 times and adds potassium borohydride, control reaction liquid temperature is 20-25 degrees Celsius, the total consumption time of first feeding to reaction end of potassium borohydride is 2-5h, reaction generates reducing ambrox, obtains the reaction liquid containing reducing ambrox;Dilute sulfuric acid is added to the reaction liquid containing reducing ambrox, adjusts the pH of reaction liquid to 3-4, keep 1h, then drop alkali solution, adjust the pH of reaction liquid to 5.2-7.5, keep 1h, filter, filtrate is placed and is layered, organic solvent layer is concentrated to dryness under reduced pressure and obtains reducing ambrox product.The present application process condition is mild, yield is high, product purity is good, raw material cost is low, pollution is small, easy to industrialization.