14 results about "Acetone / Ethanol" patented technology

The application discloses a kind of polymer oil displacement agent for carbonate fractured-vug type reservoir and preparation method thereof, step 1, with acetone and ethanol mixed solution as solvent, N, N-dimethylpropylene diamine, diethyl ether and perfluorinated nonanoic acid are added into acetone-ethanol mixed solution, after complete reaction, chloropropene is added, continue to react, after reaction is finished, solvent is removed by evaporation, to obtain fluorocarbon cation hydrophobic monomer CF-1;Step 2, white oil, emulsifier Span80 and Tween80 with mass ratio of 35-45:1-3:1-2 are mixed uniformly to obtain oil phase;AM, sodium p-styrenesulfonate and fluorocarbon cation hydrophobic monomer CF-1 are dissolved in deionized water, sodium bisulfite is added, and stirred uniformly to obtain aqueous solution;The aqueous solution is added to the oil phase to obtain a uniform emulsion, ammonium persulfate is added, and the polymer oil displacement agent is obtained by reaction. It has higher temperature resistance and salt resistance, and greatly reduces the adsorption of carbonate reservoir on the oil displacement agent.

The application discloses a two-step rapid electrothermal preparation method of a nano-titanium dioxide photoanode and application thereof, and belongs to the field of new energy materials, and the preparation steps are as follows: titanium metal sheets are cut into rectangles, are sequentially cleaned with acetone, ethanol and distilled water through ultrasonic cleaning, are dried, are placed in an electrothermal device, are electrified under a voltage of 50 to 100 volts for 20 to 30 seconds, the first-step electrothermal treatment is completed, are naturally cooled, are continuously placed in the electrothermal device, are electrified again under a voltage of 50 to 100 volts for 20 to 30 seconds, the second-step electrothermal treatment is completed, and the nano-titanium dioxide photoanode is prepared.The application directly and rapidly grows the nano-titanium dioxide photoanode on the titanium metal sheets in a two-step electrothermal mode, has the characteristics of convenience and high efficiency, can greatly shorten the preparation time of the titanium dioxide photoanode, and can avoid excessive use of chemical reagents.

A method for increasing lignocellulosic carbon microporous and mesoporous based on solvent permeation, characterized by comprising the following steps: cutting wood into thin slices of a predetermined size, and performing thermal modification; soaking the wood slices pre-carbonized in step 1) in a polar solvent for 6-10 hours, and ultrasonic oscillation; the polar solvent includes acetone, ethanol, petroleum ether, ethyl acetate, methanol and water; soaking the slices treated in step 2) in a polar solvent for 8-20 hours; drying; calcining the dried wood slices in a protective atmosphere to form lignocellulosic carbon. In the present application, the cellulose / hemicellulose in the cell wall is initially pyrolyzed by thermal modification to form a cutin layer, and then the porosity of the thermal modified wood cell wall is improved by the similar phase solubility and permeation of the polar small molecule solvent, and finally the microporous / mesoporous volume of the wood-derived carbon cell wall is simply and efficiently improved.

This invention discloses a method for preparing an electrochemical uranium extraction electrode material and an electrochemical uranium extraction apparatus. The preparation method includes: continuously cleaning iron foil in an ultrasonic cleaner using acetone, ethanol, and deionized water, followed by vacuum drying; then annealing the dried iron foil in an alumina crucible in air to generate Fe. 3 O 4 foil; then Fe 3 O 4 Foil soaked in Co(NO) 3 ) 2 ·6H 2 After soaking in solution O, the Fe was dried in a vacuum dryer, and then the dried Fe was... 3 O 4 The foil was annealed in air to complete the first cobalt loading, yielding Co. 3 O 4 @Fe 3 O 4 -1, repeated loading, yielding Co 3 O 4 @Fe 3 O 4 Nanosheet array; this invention is applied to the working electrode of a three-electrode electrochemical workstation for uranium removal. This invention has the following advantages: it can greatly accelerate the capture and reduction of uranium in electrochemical uranium removal, improve the uranium extraction rate, and has excellent uranium extraction capabilities. At the same time, the manufacturing process is simple and the cost is low.

The invention discloses a flexible Fe / Cu-MOF (at) CC composite film material and a preparation method and application thereof.According to the method, impurities on the surface of a flexible substrate (carbon cloth) are removed through ultrasonic cleaning of acetone, ethyl alcohol and deionized water, then hydrophilic groups are introduced through activation of nitric acid, then FeCl3. 6H2O, CuCl2. 2H2O and 2, 5-dihydroxyterephthalic acid are dissolved in a DMF / methyl alcohol system to form a precursor solution, and the precursor solution is subjected to ultrasonic cleaning and drying to obtain the flexible Fe / Cu-MOF (at) CC composite film material. And performing in-situ growth of the Fe / Cu-MOF film on the activated substrate through a hydrothermal method. According to the technology, a Fe / Cu double-metal synergistic center is introduced, so that an MOF electronic structure is effectively regulated and controlled, the problems of weak interference capability and low dissociation efficiency of a water molecule hydrogen bond network caused by a single metal site and a fixed electronic structure of traditional MOFs are solved, the interface water evaporation performance of the material under a complex working condition is remarkably improved, and the preparation method is suitable for industrial production. The device is suitable for solar-driven seawater desalination and wastewater treatment.

The invention relates to the technical field of gas adsorption materials, in particular to MOF-based gas adsorption filter cloth as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking a polypropylene non-woven fabric as a base material, carrying out acetone / ethanol ultrasonic cleaning and amino silanization treatment to construct a pretreatment interface layer containing a-NH2 functional group; the preparation method comprises the following steps: synthesizing a hybrid ligand H3BTA-SO3H with double acidic sites of a sulfonic acid group and a carboxylic acid group by adopting a palladium-catalyzed Suzuki coupling reaction; in-situ coordination of aluminum / zirconium metal salt and a hybrid ligand is realized through a hot press molding process, and an MOF crystal structure and sulfonamide bond (-SO2-NH-) interface chemical bridging is synchronously formed, so that the MOF-based gas adsorption filter cloth is obtained. According to the filter cloth, the interface bonding strength is enhanced through amino silane pretreatment, the adsorption efficiency is synergistically improved through sulfonic acid groups / carboxylic acid groups in the hybrid ligands, efficient adsorption performance is shown on NH3, and efficient removal of low-concentration NH3 can be achieved.

The application discloses a method for extracting antidepression active Euphausia superba oil by adopting subcritical combination solvent, and belongs to the technical field of deep processing of Euphausia superba. The method is a three-stage gradient extraction method of "subcritical butane-acetone-ethanol", and realizes differential separation and enrichment of lipid components by using solvent polarity difference. The first-stage subcritical butane extraction is carried out under low temperature, closed and oxygen isolation conditions, and high-efficiency desolventizing is realized by using reduced pressure gasification, so that the heat-sensitive active ingredients are effectively reserved, and meanwhile, oxidation and metamorphosis of raw materials are avoided, thereby laying a foundation for preparation of subsequent high-quality extracts. The method successfully prepares three Euphausia superba oil products with significant component differences, and especially, the third-stage extract and the enzymatic modification product thereof exhibit excellent antidepression activity. The application realizes functional separation of Euphausia superba lipid components, and provides strong support for development of personalized and diversified antidepression products.

A preparation method for growing a germanium sulfide (GeS2) single-crystal thin film on a SiO2 substrate includes: cleaning a surface of a substrate with acetone, ethanol and deionized water, where the substrate is a Si / SiO2 substrate or a SiO2 glass substrate; photoetching the substrate, spin-coating a photoresist, and performing photoetching and dry etching or wet etching to obtain a groove pattern; depositing a germanium (Ge)-crystal layer in the groove pattern of the substrate to obtain a treated substrate; and putting the treated substrate into a chemical vapor deposition (CVD) device for growth, a growth source being high-purity sulfur (S) powder and high-purity Ge powder, thereby obtaining a GeS2 single-crystal thin film on the SiO2 substrate. The preparation method can grow GeS2 single crystals on the SiO2 substrate. The GeS2 single crystals have a high crystalline quality and a small surface roughness.

The invention relates to the field of friction nano power generation and paper-based functional materials, in particular to an aramid paper-based friction nano power generation material with a sandwich gradient structure and a preparation method of the aramid paper-based friction nano power generation material. According to the material, a paper base obtained by synergistic papermaking of para-aramid fiber and meta-aramid fibrid which are subjected to acetone and ethanol cleaning and H2O2 oxidation modification is taken as a core layer, and polar groups such as hydroxyl and carboxyl are introduced into the surface of the modified fiber, so that the electronegativity and interfacial activity of the paper base are enhanced. And a continuous charge conduction path is formed in the paper base through micro MXene impregnation, so that the charge capture and migration efficiency is improved. The aramid nanofiber membrane which is blade-coated on the outer layer serves as a high-friction functional layer, a higher interface potential difference is formed between rich hydrogen bond sites of the aramid nanofiber membrane and the PTFE negative electrode, and the electron transfer amount can be increased. The obtained modified aramid paper base layer-MXene transport layer-ANF friction layer sandwich structure is light and flexible, large-area processing can be achieved, synergistic enhancement of triboelectrification and charge conduction is achieved on the microscopic level, the output performance is obviously better than that of a traditional paper-based triboelectricity material, and the modified aramid paper base layer-MXene transport layer-ANF friction layer sandwich structure is suitable for application such as flexible wearing, self-powered sensing and micro-nano energy collection.

The application provides a SEM sample preparation method for micro-nano sample morphology characterization. In the SEM sample preparation method, at least one of acetone, ethanol and methanol is used as a solvent, the solvent is a low-tension, low-boiling-point, high-vapor-pressure and low-viscosity liquid, the included angle between the conductive substrate and the horizontal plane is 15-45 degrees, the specific solvent such as acetone, ethanol and methanol is used to achieve the effect of rapid evaporation, and the dispersed liquid is added to the surface of the conductive substrate which is placed at an angle of 15-45 degrees, so that the micro-nano sample can be uniformly distributed on the conductive substrate, the coffee ring effect is avoided, and the uniformity and integrity of the surface structure of the micro-nano sample are ensured. This method reduces the aggregation of micro-nano sample particles, improves the surface quality of the micro-nano sample, is suitable for high-resolution morphology observation, and can present clearer and finer micro-nano structures in SEM and AFM characterization, thereby helping to accurately analyze the structural characteristics of the micro-nano sample.

The application discloses a method for synthesizing phosphine pyridone from pyridine as raw material, and is characterized by comprising the following two steps: S1, pyridine is activated by using halogenated alkane as an activating agent to obtain activated pyridine; the organic solvent used in the activation process is selected from one of acetone, ethanol, methanol, toluene and acetonitrile, the activation reaction temperature is 40-80 DEG C, and the reaction time is 12-24 hours; S2, the activated pyridine is reacted with an organic phosphine reagent in an alkaline environment to obtain phosphine pyridone; the reaction process is carried out in a mixed solvent of methanol and acetonitrile, the reaction temperature is 60-85 DEG C, and the reaction time is 8-16 hours; and the molar ratio of the activated pyridine to the organic phosphine reagent is 1:2-3. The method has the advantages of cheap and easily available raw material pyridine, good reaction yield and better atomic economy, and is applicable to common alkyl, halogen, alkoxy, aryl, ester group and the like which are mono-substituted or multi-substituted.

The invention belongs to the technical field of chemical synthesis of medicines, and discloses a novel process for producing an alfacalcidol raw material medicine, which comprises the following steps of: introducing a Lewis acid catalyst in a key addition reaction, obviously shortening the reaction time and inhibiting side reaction; a quenching mode of dilution dropwise adding and real-time pH and temperature monitoring is adopted to replace one-time adding of a quenching agent, so that product decomposition or polymerization caused by too high local concentration is avoided; an acetone-ethanol cosolvent system is combined with a programmed gradient cooling crystallization process, so that the freezing point of the solvent is reduced, and crystals with uniform particle size and good fluidity are obtained; and a microwave-vacuum combined drying technology is adopted, so that the drying efficiency is greatly improved, and the moisture absorption stability of the product is improved. The method has the advantages of high overall efficiency, stable product quality, significantly improved product purity and yield, and suitableness for industrial production.