22 results about "Sodium Phenolate" patented technology

The utility model relates to the technical field of phenol sodium salt treatment, and discloses a phenol sodium salt decomposition and crude phenol refining device which comprises a shell, an inner container is arranged in the shell, the top of the shell is connected with a top cover through a bolt, the top end of the top cover is fixedly connected with a supporting plate, the inner side of the supporting plate is rotatably connected with a rotating rod, and the outer surface of the rotating rod is fixedly connected with a pulley. One end of the hose is fixedly connected with a pipe joint, and one end of the pipe joint is in threaded connection with a flushing pipe. After the reaction is finished, the washing pipe enters the inner container through the inlet pipe, the booster pump pumps water, and the inner container, the stirring rod and the stirring paddle are washed through the high-pressure spray head of the washing pipe, so that raw materials are prevented from being adhered to the outer surfaces of the parts, corrosion possibly caused by long-term adhesion of the raw materials is avoided, the washing operation can be timely eliminated, and the service life of the raw materials is prolonged. Therefore, the service life of key components such as the inner container is prolonged, and long-term stable operation of the device is ensured.

The application belongs to the technical field of chemical industry, and particularly relates to a mixed cresol separation method, which comprises selective oxidation, filtration, neutralization, secondary filtration and rectification processes in sequence. The selective oxidation comprises: adding mixed cresol, sodium hydroxide, sodium methoxide, a solvent and a catalyst into an oxidation kettle, heating, and introducing oxygen for selective oxidation. In the selective oxidation step, sodium methoxide is added, which can react with water obtained in a salification reaction step (i.e. a reaction step of sodium hydroxide and mixed cresol to generate sodium phenate and water) to generate methanol and sodium hydroxide, thereby promoting the selective oxidation reaction and improving the yield.

This application discloses a photocatalytic method for dehydrogenating sodium cyclohexoxide, comprising the following steps: mixing sodium cyclohexoxide with a catalyst, and conducting a photocatalytic reaction under light irradiation to obtain sodium phenolate; the catalyst is selected from metal catalysts and / or supported metal catalysts; the metal catalyst is Rh metal particles; the supported metal catalyst is selected from at least one of Pt / TiO2, Pd / TiO2, Rh / TiO2, Rh / Al2O3, and Rh / C. The photocatalytic sodium cyclohexoxide dehydrogenation method provided in this application can achieve rapid hydrogen release from sodium cyclohexoxide without external heating, and has a faster response speed and a faster dehydrogenation rate compared to thermal catalysis. Furthermore, the photocatalytic sodium cyclohexoxide dehydrogenation method of this application can be carried out under sunlight, and the use of solar energy can effectively reduce the cost of sodium cyclohexoxide dehydrogenation, which is beneficial for its large-scale application.

The invention discloses a texturing process of a single crystal battery piece. The texturing process comprises the following steps: S1, performing pre-texturing treatment on a silicon wafer by adopting pre-texturing liquid; s2, texturing the silicon wafer by adopting texturing liquid; the prefabricated down liquid comprises polyvinylpyrrolidone and polyvinyl alcohol; the texturing liquid comprises inorganic alkali, a defoaming agent and a catalyst; the inorganic base is selected from at least one of sodium hydroxide and potassium hydroxide, and the defoaming agent is selected from at least one of dodecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, diethylene glycol, triethylene glycol and tetraethylene glycol. The catalyst is selected from at least one of sodium 5-nitro-o-methoxyphenolate, sodium o-nitrophenolate and sodium p-nitrophenolate. A nucleating agent solution is adopted to carry out texturing pretreatment on a silicon wafer, then alkali treatment texturing is carried out on the silicon wafer, and the liquid changing period of the texturing process is long; and the cell pieces prepared by taking the polyvinylpyrrolidone and the polyvinyl alcohol as the combined nucleating agent are relatively small in inter-piece color difference.

The application relates to the technical field of phosphazene flame retardants, and particularly discloses a high-performance low-cost phosphazene flame retardant and a preparation method thereof. The method comprises the following steps: first, purifying an industrial by-product mixed sodium phenate to obtain anhydrous mixed sodium phenate; then, under the action of a nucleophilic substitution promoter composed of an alkaline compound and a polar aprotic solvent, step-by-step nucleophilic substitution reaction is carried out by controlling feeding sequence, reaction temperature and other conditions; after the reaction is completed, high-purity phosphazene flame retardant products are obtained through vacuum concentration and water washing precipitation; meanwhile, unreacted sodium phenate and solvents are recycled and reused; and a complete green closed-loop production process is constructed. Through the unique promoter system and process design, the application effectively coordinates the reaction activities of different components in the mixed sodium phenate, inhibits side reactions, significantly reduces the cost of raw materials, ensures excellent thermal stability and flame retardant efficiency of the products, realizes near-zero emission and maximization of resource utilization, and has an outstanding industrial application prospect.

The application provides a high-efficiency humidity-controlling energy-saving building material, a preparation method and application thereof, and the preparation method comprises the following steps: step one, preparing a porous substrate; step two, immersing the porous substrate in a humidity-controlling solution for a period of time, and taking out the porous substrate to obtain the high-efficiency humidity-controlling energy-saving building material, wherein the humidity-controlling solution comprises a humidity-controlling composition, the humidity-controlling composition comprises at least three kinds of light metal salts and one other kind of substance, the light metal salts are selected from calcium chloride, copper sulfate, potassium citrate, sodium malate, sodium citrate, sodium phenolate, ammonium chloride, potassium chloride, ammonium lactate, potassium carbonate, lithium bromide and sodium chloride, and the other kind of substance is selected from xanthan gum, silicon dioxide, sodium polyacrylate and sodium hexametaphosphate.

The present invention provides a method for recovering and treating a 4,4-dinitrodiphenyl ether by-product, and belongs to the technical field of organic synthesis. The present invention adjusts the pH value to 3-4 to remove substances that can react with acid in the by-product salt, and the functions of ferrous sulfate and the first activated carbon are to decolorize and remove the color of the 4,4-dinitrodiphenyl ether material. The pH value is then adjusted to 6-8 to remove ferrous sulfate, and then a second decolorization is performed to obtain a white solid salt. The function of hydrogen peroxide is to remove organic matter in the reaction, and the resin column elution ensures that p-chloronitrobenzene, sodium p-nitrophenolate, and DNP organic matter are completely removed. Finally, a solid salt having a sodium chloride content of ≥99.1g / 100g and a TOC (total organic carbon) of less than 50mg / kg is obtained. The obtained solid salt does not have the odor of p-nitrochlorobenzene, meets the industrial salt standard, and realizes the recovery and use of the 4,4-dinitrodiphenyl ether by-product, thereby reducing costs.

The invention relates to a salicylic acid production method for comprehensively utilizing wastewater, comprising the following steps: S1: reacting phenol with liquid alkali to obtain sodium phenolate; S2: introducing carbon dioxide into the sodium phenolate to carry out a carboxylation reaction, and then carrying out rearrangement isomerization to obtain sodium salicylate; and then carrying out acid precipitation to obtain a crude salicylic acid product; S3: washing and centrifuging the crude salicylic acid product to obtain a salicylic acid product and salicylic acid production wastewater; S4: subjecting the wastewater to adsorption by a resin column, wherein the adsorption effluent comprises front-end effluent and back-end effluent, and the front-end effluent is used for the carboxylation reaction and acid precipitation operation in step S2; S5: inputting the back-end effluent into an evaporation crystallization device to obtain a crude sodium sulfate product and a kettle residue, and the kettle residue is used for the carboxylation reaction and acid precipitation operation in step S2; and S6: after the resin column is saturated with adsorption, eluting and regenerating with alkali solution, and obtaining an eluent comprising a front-end eluent and a back-end eluent, wherein the front-end eluent is used for step S1, and the back-end eluent is used for preparing the alkali solution.

The utility model belongs to the technical field of production of chemical intermediates, and particularly discloses a crystallization kettle for producing sodium paranitrophenolate, which comprises a crystallization kettle body and a jacket, a heat exchange layer is reserved between the jacket and the kettle body, a stirring mechanism is mounted in the kettle body, a scraper is fixedly connected onto the stirring mechanism through a connecting rod, a water inlet and a water outlet are formed in the heat exchange layer, and the water inlet and the water outlet are communicated with the jacket. The stirring mechanisms are communicated through a circulating pipeline, a stop valve, a water pump and a heat exchanger are mounted on the circulating pipeline, the heat exchanger is communicated with a steam supply source through a first electromagnetic valve and is communicated with a cold water supply source through a second electromagnetic valve, and a temperature sensor is fixedly connected to the lower end of each stirring mechanism. According to the utility model, the heat exchanger is arranged on the circulating pipeline, the temperature of circulating water in the circulating pipeline is controlled by the heat exchanger to carry out heat exchange and cooling on the kettle body of the crystallization kettle, and the temperature sensor is arranged in the kettle body to monitor the change of the temperature in the kettle body in real time, so that the condition that the temperature of the crystallization kettle is rapidly reduced is prevented, and the wall hanging phenomenon is avoided.

The invention relates to the field of sodium sulfite production, in particular to sodium sulfite and a refining method thereof.The method comprises the steps that S1, a sodium sulfite crude product is dissolved, solid impurities are removed, filtrate is obtained, and the sodium sulfite crude product comprises one or more of impurity sodium sulfate, sodium phenolate organic matter and solid impurities; s2, adjusting the pH value of the filtrate to be less than or equal to 9, then contacting with an extraction agent for extraction, and separating to obtain a water phase and an oil phase; s3, carrying out first concentration crystallization on the water phase, and carrying out solid-liquid separation to obtain a first crystal solid and a first crystal filtrate; s4, dissolving the first crystal solid, carrying out second cooling crystallization, and carrying out solid-liquid separation to obtain a second crystal solid and a second crystal filtrate; and S5, carrying out third crystallization water removal crystallization on the second crystallization solid, carrying out solid-liquid separation, washing to obtain a sodium sulfite wet finished product and a third crystallization filtrate, and drying the sodium sulfite wet finished product. The color and the purity of the sodium sulfite product can be improved, and the obtained product meets the industrial standard.

This invention discloses a method for preparing quinone compounds. The method comprises the following steps: in the presence of a base, a compound as shown in Formula II and a compound as shown in Formula III undergo a condensation reaction to obtain a quinone compound as shown in Formula I; wherein the base is more basic than sodium phenolate. This method is simple to operate and suitable for industrial production.

A preparation method of 4, 4 '-dinitrodiphenyl ether belongs to the field of organic synthesis, and comprises the following steps: step 1, weighing p-nitrochlorobenzene, sodium carbonate, a phase transfer catalyst and DMF according to a ratio; 2, mixing p-nitrochlorobenzene, sodium carbonate, a phase transfer catalyst and DMF, and carrying out a reaction; 3, filtering after the reaction is completed, and cooling filtrate to crystallize; 4, after cooling crystallization of the filtrate is completed, filtering and washing; and 5, drying to obtain the product 4, 4 '-dinitrodiphenyl ether. The synthesis method is simple to operate, p-nitrochlorobenzene is converted into 4, 4 '-dinitrodiphenyl ether by adding a proper phase transfer catalyst, sodium p-nitrophenolate is not used any more, the reaction risk is reduced, the reaction steps are shortened, impurities are few, the conversion rate is high, the purity is high, the production efficiency is improved, and the solvent DMF can be recycled and reused.

The invention relates to the technical field of industrial naphthalene, in particular to a production method of industrial naphthalene, which comprises the following steps: S1, raw material pretreatment: selecting coal tar as a raw material, and pretreating the coal tar to obtain a coarse material; s2, distillation treatment: carrying out distillation treatment on the coarse material to obtain a base material; s3, purification treatment: carrying out dephenolization and pyridine removal treatment on the base material to obtain naphthalene oil; s4, crystal separation treatment: carrying out crystal separation treatment on the naphthalene oil to obtain crude naphthalene; and S5, refining treatment: carrying out refining treatment on the crude naphthalene to obtain the industrial naphthalene. According to the method, in the first treatment liquid, isopropanol serves as a solubilizing phenol and can play a role in promoting dissolution of sodium phenolate, precipitation and blockage are prevented in the treatment process, the extraction efficiency is improved, polysorbate 80 serves as a surface active agent, diffusion of phenols from an oil phase to alkali liquor can be enhanced, and the extraction efficiency is further improved.

The invention relates to the technical field of solar cells, and particularly discloses a polishing additive for solving the problem of white spots in the pre-rough polishing process of a BC battery and a using method.The polishing additive is prepared from, by weight, 1.0%-10.0% of accelerant, 0.1%-5% of defoaming agent, 0.1%-0.5% of pH regulator, 0.01%-0.1% of surfactant and the balance deionized water; the accelerant is selected from one or a combination of more than two of sodium p-toluenesulfonate, perbenzoic acid, 2-nitroaniline, parachloronitrobenzene and sodium 2-methoxy-5-nitrophenolate; the accelerant is one or a combination of more than two of sodium p-toluenesulfonate, perbenzoic acid, 2-nitroaniline, parachloronitrobenzene and sodium 2-methoxy-5-nitrophenolate; by adopting an alcohol-free and phosphorus-free environment-friendly component design, the polishing additive obviously reduces the difficulty of subsequent sewage treatment while ensuring the efficient polishing performance, avoids the pollution of a traditional alcohol-containing and phosphorus-containing additive to the environment, effectively solves the problem that a silicon wafer is easy to generate white spots after a previous rough polishing process, and also has the advantages of simple process and low cost. And through an optimized surfactant and defoaming agent compounding technology, the surface flatness of the silicon wafer is further improved, and double breakthrough of environmental protection and performance is realized.

The utility model belongs to the technical field of fraction washing, and particularly relates to a mixed fraction washing system for tar distillation, which comprises an unwashed naphthalene oil tank, an alkaline sodium phenolate elevated tank, a primary continuous washing separation tower and a washed naphthalene oil tank, and is characterized by also comprising a secondary continuous washing separation tower and a dilute alkali elevated tank, the output end of the unwashed naphthalene oil tank and the output end of the alkaline sodium phenolate head tank are respectively connected with the input end of the primary continuous washing separation tower, and the upper oil phase output end of the primary continuous washing separation tower is connected with the input end of the primary dephenolization buffer tank; the output end of the dilute alkali overhead tank and the output end of the primary dephenolization buffer tank are respectively connected with the input end of the secondary continuous washing separation tower, and the oil phase output end of the secondary continuous washing separation tower is connected with the input end of the washed naphthalene oil tank. According to the utility model, a secondary dephenolization process is adopted, and the secondary continuous washing separation tower is additionally arranged to carry out secondary dephenolization on the naphthalene oil, so that the purity of the finished product naphthalene oil is greatly improved.

The invention discloses a hydroxyl-terminated polybutadiene-based polyurethane material with hot air aging resistance and excellent mechanical properties and a preparation method of the hydroxyl-terminated polybutadiene-based polyurethane material. According to the method, hexachlorocyclotriphosphazene is taken as a raw material, sodium phenolate or a mixture of sodium phenolate and p-aldehyde sodium phenolate is taken as a nucleophilic substitution reagent, sodium borohydride is taken as a reducing agent, and the hydroxymethylphenoxy cyclotriphosphazene compound is obtained through nucleophilic substitution reaction and reduction reaction. And introducing the hydroxymethylphenoxy-containing cyclotriphosphazene compound serving as a chain extender or a cross-linking agent into synthesis of hydroxyl-terminated polybutadiene polyurethane to obtain the polyurethane material. The tensile strength of the polyurethane material can be improved by 437%, the elongation at break can be improved by 39%, the glass transition temperature of the polyurethane material is maintained at about-70 DEG C, in addition, the tensile strength retention rate of the polyurethane material is maintained at 56% or above, and the elongation at break retention rate of the polyurethane material is maintained at 53% or above after the polyurethane material is aged in hot air at 100 DEG C for 24 h.

The invention relates to the field of preparation of p-hydroxyphenylglycine, in particular to a synthetic method of novel D-p-hydroxyphenylglycine. The synthesis method comprises the following steps: S1, adding D-tartaric acid into a methanol solution of D, L-p-hydroxyphenylglycine methyl ester, and reacting to obtain a mixed solution; s2, cooling and filtering the mixed solution obtained in the step S1 to obtain D-p-hydroxyphenylglycine methyl ester tartrate; s3, adding sodium carbonate and deionized water into the filtrate obtained in the step S2, reacting for 1-2 hours to obtain a reaction solution, and filtering to obtain D-sodium p-phenolate phenylglycine methyl ester tartrate; s4, combining the D-p-hydroxyphenylglycine methyl ester tartrate obtained in the step S2 and the D-sodium p-phenolate phenylglycine methyl ester tartrate obtained in the step S3, then adding into deionized water, uniformly stirring, and hydrolyzing; and S5, neutralizing the hydrolyzed solution obtained in the step S4, and slowly separating out a solid to obtain the D-p-hydroxyphenylglycine. The synthesis method disclosed by the invention is simple in preparation process, low in reagent cost, high in resolution rate and easy for industrial production, and can be quickly popularized and applied.

The invention discloses a method for producing and purifying p-nitrophenol, and belongs to the field of chemical preparation. Comprising the following steps: S1, mixing p-nitrochlorobenzene and a sodium hydroxide aqueous solution under the protection of inert gas, heating and stirring, and filtering after reaction to obtain a reaction solution; adding an organic solvent into the reaction liquid, extracting and separating to obtain an organic phase and a water phase, cooling and crystallizing the water phase, and performing centrifugal suction filtration to obtain filtrate and sodium p-nitrophenolate; s2, uniformly mixing sodium p-nitrophenolate with hot water under the protection of inert gas, adding a hydrochloric acid aqueous solution, adjusting the pH value, heating and stirring, cooling and stirring, cooling and crystallizing, and carrying out centrifugal suction filtration to obtain a p-nitrophenol crude product; and carrying out reduced pressure distillation on the p-nitrophenol crude product to obtain p-nitrophenol. The sodium p-nitrophenolate and the p-nitrophenol prepared by the method provided by the invention are high in yield and purity, and have a good application prospect in the field of chemical preparation.

The invention discloses a preparation method of a compound sodium nitrophenolate stable isotope internal standard reagent and application of the compound sodium nitrophenolate stable isotope internal standard reagent in quantitative detection of compound sodium nitrophenolate, and belongs to the technical field of chemical analysis. The internal standard reagent is deuterated compound sodium nitrophenolate; the deuterated compound sodium nitrophenolate comprises deuterated sodium o-nitrophenolate, deuterated sodium p-nitrophenolate and deuterated 5-nitro o-methoxy sodium phenolate. The reagent can eliminate the interference influence caused by a matrix effect and a pretreatment process in a liquid chromatography-tandem mass spectrometry method, can be used as a standard reagent for quantitatively detecting the compound sodium nitrophenolate, can accurately correct ionization efficiency deviation and the matrix effect, and remarkably improves the recovery rate and repeatability of the method. In addition, according to the synthetic method of the deuterated compound sodium nitrophenolate, raw materials are cheap and easy to obtain, reaction conditions are mild, the yield and the atom utilization rate are high, and the synthetic method is suitable for stable isotope labeled compound sodium nitrophenolate.

The present invention relates to the technical field of flue gas carbon dioxide recovery, and discloses a flue gas carbon dioxide recycling system and a phenol sodium salt decomposition process, the flue gas carbon dioxide recycling system comprises: a flue gas pretreatment unit for cooling, dedusting and desulfurizing industrial flue gas containing carbon dioxide; the pressure swing adsorption concentration unit is used for selectively adsorbing flue gas carbon dioxide from the pretreated flue gas and desorbing to obtain carbon dioxide-rich gas; the decomposition reaction unit comprises a primary decomposition tower and a secondary decomposition tower, and is used for carrying out gas-liquid countercurrent contact on the carbon dioxide-rich gas and a sodium phenolate aqueous solution, so that the sodium phenolate is decomposed to generate crude phenol and sodium carbonate; according to the flue gas carbon dioxide recycling system and the phenol sodium salt decomposition process, the carbon dioxide in the flue gas is used for replacing sulfuric acid to decompose the phenol sodium salt, so that the problem of an acid source for decomposing the phenol sodium salt is solved, and high-value recycling of the carbon dioxide in the flue gas is realized.

The invention relates to a chemical reagent for removing heavy metal ions in laboratory waste liquid and a removal method, and belongs to the technical field of environmental protection. The method comprises the following steps: adding a chemical reagent containing sodium sulfide or potassium sulfide, sodium phenolate or potassium phenolate, sodium carbonate or potassium carbonate solution into the waste liquid; detecting the residual concentration of the chemical reagent in the waste liquid in real time by adopting an ultraviolet visible absorption spectrum detector; the variety and the concentration of the heavy metal ions are measured by comparing the variety and the concentration change of the chemical reagents in the wastewater. Compared with the prior art, heavy metal ions in the laboratory waste liquid can be effectively removed, and meanwhile, the types and concentrations of heavy metals are accurately detected.

The invention relates to the technical field of metallurgical coking, in particular to a dephenolization washing pump front mixing pressurization process and system. According to the process, inert gas pressurization is carried out on a primary continuous washing separation tower and a secondary continuous washing separation tower, and a traditional normal-pressure self-flow extraction mode is changed into pressurized outflow. The method specifically comprises the following steps: respectively controlling oil-water separation interfaces of two towers through a neutral sodium phenolate flow regulating valve and an alkaline sodium phenolate flow regulating valve under a pressurization condition; and tower top extraction and liquid level sealing are controlled through a primary mixed part liquid level regulating valve and a washed mixed part liquid level regulating valve. The system comprises a pressurized separation tower, a gas supply pipeline, a regulating valve and an automatic control instrument, according to the invention, the separation interface and the extraction flow are automatically and accurately controlled, the adjustment sensitivity is obviously improved, meanwhile, equipment such as an alkaline sodium phenolate head tank is omitted, the process is simplified, the investment and operation cost is reduced, and the production efficiency and the control level are effectively improved.