284 results about "Acetate salt" patented technology

The cyanide-free copper-zinc alloy plating solution comprises 18-24 g / L of polycuprous thiocyanate, 9-13 g / L of polyzinc thiocyanate, 130-170 g / L of polysodium thiocyanate and 8-12 mL / L of brightener, the pH value of the plating solution is 10-12, the temperature of a plating bath is 35-55 DEG C, the cathode current density is 0.5-1.5 A / dm < 2 >, the cathode movement speed is 3-5 m / min, a copper-zinc alloy plate with the copper mass fraction being 68% is used as an anode, and the anode movement speed is 3-5 m / min. The brightening agent is prepared from 60 to 100 parts of N, N '-di-n-propylethylenediamine, 10 to 20 parts of waterborne polyurethane resin, 80 to 120 parts of polyacrylamide of which the molecular weight is less than 8000 and 770 to 870 parts of deionized water. A steel matrix or zinc alloy matrix copper-zinc alloy and bright nickel plated sample piece is subjected to an acetate fog test for 72 h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, the surface of the steel matrix or zinc alloy matrix copper-zinc alloy and bright nickel plated sample piece is free of rust, and according to GB / T 5270-2005 Metal Covering Layer Electro-Deposition and Chemical Deposition Layer Adhesive Strength Test Method, the coating binding force is tested by a thermal shock method. And the result meets the standard requirement.

The invention refers to an electronic component, in particular an organic electrochemical transistor (OECT) which comprises at least one gate electrode, a source electrode, a drain electrode, a channel and an electrolyte. The electrolyte is a solid electrolyte comprising a polymer, and the channel comprises an organic semiconductor as channel material. The electrolyte has a low water content and / or a low C1-C3-alcohol content as well as a low maximum halogen alkaline salt or alkaline earth or acetate salt content. The invention further refers to the use of this electronic component as a Schmitt-Trigger or a Muller-C-element or a flip-flop or a 1-bit memory. Further, the invention provides a method for forming such an electronic component.

The invention discloses a synthetic method of a fluorescent dye, which comprises the following steps: A, dropwise adding POCl3 into DMF (Dimethyl Formamide) at the temperature of 0 DEG C under the condition of protective atmosphere and stirring, and fully reacting; continuously dropwise adding cyclohexanone, heating, stirring, fully reacting, adding the reaction liquid into ice water, and separating out a solid first compound; b, under the protective atmosphere, stirring and refluxing p-sulfonyl phenylhydrazine, 3-methyl-2-butanone and acetate in acetic acid to react completely, cooling the reaction liquid to-10 to 5 DEG C, stirring, and separating to obtain a second compound; c, under the protective atmosphere, after the second compound and 1, 4-butanesultone are stirred, refluxed and completely reacted in xylene, separating to obtain a third compound; and D, stirring and refluxing the third compound, the first compound and acetate in methanol at the temperature of 80 DEG C under the conditions of protective atmosphere and light shielding, simultaneously dropwise adding acetic anhydride, cooling to room temperature after full reaction, and separating and purifying. According to the scheme, the synthesis process is simple and efficient, and high-quality synthesis of the target dye S0456 is effectively realized.

The invention discloses a preparation method of a spherical hard carbon negative electrode material suitable for a sodium ion battery, and relates to the technical field of electrode materials, the preparation method comprises the following steps: (1) mixing acetic acid metal salt and a first acid solution in an aqueous solution, and stirring until the solution is transparent; (2) sequentially adding starch and a second acid solution into the transparent solution, and heating and stirring until uniformly dispersed suspension slurry is obtained; (3) carrying out spray drying on the suspension slurry to obtain uniformly mixed starch / acetic acid metal salt powder; (4) performing carbonization treatment, washing and drying on the powder in sequence to obtain a hard carbon precursor; and (5) calcining the hard carbon precursor to obtain the spherical hard carbon negative electrode material. By adopting an acetic acid metal salt co-pyrolysis method, foaming of the starch in the pyrolysis process can be inhibited, the original form and structural integrity of the material are kept, more closed pore volumes are shown, and the energy storage capacity and the cycling stability of the hard carbon material are remarkably improved.

The invention belongs to the technical field of chemical production, and discloses an ionic liquid dissolving agent mixture as well as a preparation method and application thereof. The ionic liquid dissolving agent mixture is prepared from the following raw materials: modified long-carbon-chain imidazole tetrafluoroborate, modified long-carbon-chain imidazole long-carbon-chain anion salt, betaine salt, imidazole acetate, imidazole haloid, imidazole bis (fluorosulfonyl) imide salt, imidazole hexafluorophosphate, imidazole long-carbon-chain anion salt and quaternary ammonium long-carbon-chain anion salt. And pyridine halogen salts. When the ionic liquid dissolving agent mixture is used for dissolving PE powder and PP powder, a dichloromethane extracting agent can be replaced with water, cyclic utilization of the ionic liquid can be achieved, an original high-investment tail gas treatment device is eliminated, cost reduction and efficiency improvement are achieved for the industry, and meanwhile the performance of PE and PP diaphragms can be improved.

The invention relates to the technical field of drug analysis and detection, and particularly discloses a method for detecting the residual quantity of glucose in an irinotecan hydrochloride liposome injection. According to the method, irinotecan hydrochloride in the liposome is fully separated from small molecular substances such as glucose and sodium chloride by adopting an ultrafiltration method, then, a Waters XBridge BEH HILIC chromatographic column is adopted, a mixed solution of an acetate buffer solution with the pH value of 3.8-4.2 and acetonitrile is used as a mobile phase, and the content of irinotecan hydrochloride in the liposome is detected in an isocratic elution mode by adopting a high performance liquid chromatography method. The effective separation of glucose, sodium chloride, 4-hydroxyethylpiperazine, sucrose octasulfate potassium and other substances is realized, and the condition of the glucose residue in the irinotecan hydrochloride liposome is accurately detected. The invention provides a reliable guarantee for improving and better controlling the quality of the irinotecan hydrochloride liposome injection product, and has very important significance for improving the medication safety.

The invention relates to the technical field of drag reducer preparation, and in particular to a method for producing a salt-resistant drag reducer for oil well fracturing. S1.1, weighing the following raw materials in parts by weight: 27-32 parts by weight of a modified polymer, 0.6-1.1 parts by weight of a cross-linking agent, 0.1-0.3 parts by weight of an antioxidant, 2-6 parts by weight of an acetate buffer, 0.6-0.8 parts by weight of a surfactant, 0.02-0.04 parts by weight of a benzalkonium chloride biocide, and 0.2-0.4 parts by weight of a bentonite suspending agent; wherein, the modified The polymer is prepared by copolymerization of acrylamide, crotonic acid and acrylic acid phosphonate in a mass ratio of 7:2 to 4:10 to 13; S1.2, adding the above raw materials and continuously stirring to obtain a salt-resistant drag reducer; crotonic acid, acrylic acid phosphonate and acrylamide are used to prepare a modified polymer, and carboxyl and phosphonic acid groups are introduced into the polyacrylamide, thereby enhancing the water solubility of the polymer and, at the same time, improving the coordination ability of the modified polymer with the zirconium ions in the cross-linking agent, thereby improving the salt resistance and drag reduction effect of the modified polymer.

The invention relates to the technical field of bio-based high polymer materials, in particular to a vanillin-based diepoxy monomer compound as well as a preparation method and application thereof. The invention provides a brand new vanillin-based diepoxy monomer compound. A preparation method of the compound comprises the following steps: 1, synthesizing a bio-based bisphenol intermediate from bio-based platform compounds such as vanillin and vanillin under the catalysis of pyrrolidine acetate; 2, adding epichlorohydrin to synthesize a diepoxy monomer under the catalytic action of a phase transfer catalyst and base; and the epoxy resin can be reacted with a commercial curing agent to prepare high-performance bio-based epoxy resin. The glass transition temperature of the prepared high-performance bio-based epoxy resin is 170-220 DEG C, the initial decomposition index in nitrogen is 300-380 DEG C, the tensile strength is 85-120 MPa, and the high-performance bio-based epoxy resin has good mechanical properties and thermal stability.

The invention discloses a needle-shaped water-soluble fertilizer anti-blocking agent and a preparation method and application thereof, and relates to the technical field of anti-blocking agents, the needle-shaped water-soluble fertilizer anti-blocking agent comprises the following raw material components by mass: 10.0-30.0% of water-soluble polyvinylpyrrolidone, 10.0-30.0% of water-soluble phosphate, 10.0-30.0% of water-soluble phosphate, 10.0-30.0% of water- 15.0% to 25.0% of dodecyl amine acetate; 3.0 to 8.0% of ethylene bis (stearamide); 5.0 to 9.0 percent of isooctanol polyoxyethylene ether (3) phosphate ester; 1.0 to 5.0 percent of sodium polyacrylate with low polymerization degree; and the balance of water; the sum of the mass percentages of all the components is 100%. The anti-blocking agent provided by the invention is excellent in performance, and the needle-shaped water-soluble fertilizer can be kept loose within 3-6 months (in a normal state) after being added with the anti-blocking agent provided by the invention.

The invention relates to a method for preparing dimethyl terephthalate by catalyzing waste polyester in one step and dimethyl terephthalate. The invention relates to a method for preparing dimethyl terephthalate by catalyzing waste polyester in one step, which comprises the following steps: mixing a waste polyester material, a catalyst and a depolymerization solution for depolymerization reaction to obtain dimethyl terephthalate, the catalyst is selected from aromatic acid, aromatic acid alkali metal salt, a composition of aromatic acid and carbonate, a composition of aromatic acid and phosphate, a composition of aromatic acid and acetate, a composition of aromatic acid alkali metal salt and carbonate and a composition of aromatic acid alkali metal salt and phosphate; and a composition of aromatic acid alkali metal salt and acetate. The invention also provides the dimethyl terephthalate prepared by the method. The method provided by the invention solves the problems of low product purity and yield in the existing polyester waste chemical recovery method, and also solves the problems of high catalyst cost, harsh reaction conditions and easy secondary pollution to the environment in the existing recovery method.

The invention belongs to the field of biosensor detection, and particularly discloses a colorimetric detection method based on functionalized copper cysteine nano-enzyme, which comprises the following steps: preparing a specific functionalized copper cysteine nano-enzyme composite material; and constructing a detection reaction system containing hydrogen peroxide, tetramethyl benzidine, an acetate buffer solution and a target solution, and determining the concentration of the target by using a colorimetric analysis technology. Particularly, CuCl2. 2H2O is used as a copper source, PEG-4000 is used as polyethylene glycol, reaction is performed under nitrogen protection and alkalescence conditions, and then the reaction product reacts with chloroauric acid and trisodium citrate to prepare the composite material. According to the method, hydrogen peroxide and tetramethyl benzidine are taken as substrates, high-sensitivity detection of a target object (such as dopamine) is realized by measuring an absorption peak value of a reaction system at 652nm, and a standard curve is drawn so as to accurately measure the concentration of a solution to be measured. The method is simple and convenient to operate and high in sensitivity, and has a wide application prospect in detection of biological molecules such as dopamine.

The invention discloses a catalyst for synthesizing vinyl acetate. The catalyst comprises a carrier, and Pd, Au, Cu and alkali metal acetate which are loaded on the carrier. The vinyl acetate catalyst has the beneficial effects that by regulating and controlling the mass ratio of Au to Cu contained in the catalyst, the catalyst has higher activity and selectivity, and the selectivity of the catalyst is higher than that of a catalyst independently containing Au and Cu.

The invention discloses a plant genome DNA (deoxyribonucleic acid) extraction reagent. The plant genome DNA extraction reagent comprises a Buffer 1 lysis solution, a Buffer 2 precipitation solution and a Buffer 3 binding solution, the Buffer 1 lysate comprises sodium chloride, PVP40 (Polyvinyl Pyrrolidone 40), sodium metabisulfite and SDS (Sodium Dodecyl Sulfate); wherein the concentration of the sodium chloride is 250 to 1200 mM; the mass percent of the PVP40 is 0.5%-3%; the concentration of the sodium metabisulfite is 50-150mM; the mass percent of the SDS is 0.7%-2.5%; the Buffer 2 precipitation solution comprises acetate; wherein the concentration of the acetate is 2.2 to 4.3 M; the Buffer 3 binding solution comprises guanidine hydrochloride; wherein the concentration of the guanidine hydrochloride is 0.5 to 2.5 M. The extraction reagent does not contain organic solvents such as phenol and chloroform, and the removal rate of polyphenol can be improved.

The invention relates to a method for directionally improving the tolerance of haematococcus pluvialis acetate, aiming at the problem that haematococcus pluvialis is sensitive to high-concentration acetate, the method comprises the following steps: gradually improving the tolerance of algae species through a staged adaptive evolution strategy, gradually adapting WT to 2.5 g / L sodium acetate through short-period-multi-cycle domestication, and obtaining a domesticated algae species HpAC25; on the basis of HpAC25, domesticating the HpAC25 to 5g / L to obtain HpAC50; further, on the basis of HpAC50, domesticating to obtain 7.5 g / L of sodium acetate, so as to obtain HpAC75. In the domestication process, suspended green motile cells are enriched through centrifugation, circulation passage is carried out every 3 days, the cell density is monitored, and the accumulative culture period reaches 189 days. Experiments show that the domesticated algae species HpAC50 and HpAC75 are cultured for 10 days under 5g / L sodium acetate and 7.5 g / L sodium acetate, and the survival rates of the domesticated algae species HpAC50 and HpAC75 reach 81.22% and 43.51% respectively and are increased by 422% and 460% compared with WT. The method is simple and convenient to operate, the tolerance of haematococcus pluvialis to acetate is remarkably enhanced, and a technical basis is provided for efficient production of astaxanthin and large-scale culture.

The invention discloses a preparation method of bis-hydroxyethyl bisphenol A ether, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: adding bisphenol A, a mixed acetate catalyst and a solvent into a reaction kettle, starting stirring, replacing nitrogen, heating to a reaction temperature, starting to introduce ethylene oxide, keeping the temperature after the ethylene oxide is added, and continuously reacting until the pressure is not reduced any more to obtain bisphenol A; cooling to a desolventizing temperature, desolventizing until no solvent is discharged, cooling, degassing, and discharging to obtain the bis (hydroxyethyl) bisphenol A ether, wherein the mixed acetate catalyst is prepared from calcium acetate, magnesium acetate and barium acetate; the solvent is methyl cyclohexane. According to the preparation method, the specific mixed acetate is adopted as the catalyst, methyl cyclohexane is adopted as the solvent, the excellent catalytic effect is achieved, the prepared bis-hydroxyethyl bisphenol A ether is high in content, low in hydroxyl value and light in color, and the solvent is small in toxicity and easy to recycle.

The plating solution comprises the following components and process parameters: 25-35 g / L of cadmium chloride, 4-6 g / L of ferrous chloride tetrahydrate, 100-140 g / L of potassium chloride, 100-140 g / L of a coordination agent, 1.5-2.5 mL / L of a leveling agent, 1.5-2.5 mL / L of a brightening agent, 25-30 mL / L of an auxiliary agent and 25-35 g / L of a stabilizer, the pH value of the plating solution is 6-8, the temperature of a plating tank is 20-35 DEG C, the cathode current density is 0.5-1.5 A / dm < 2 >, and the cathode movement is 2-4 m / min. According to the prepared cadmium-plated iron alloy sample piece subjected to color passivation through hexavalent chromium, the surface of the sample piece is free of white rust in an acetate mist test for 520 h according to GB / T 10125-2021 Artificial Atmosphere Corrosion Test Salt Spray Test, and a plating layer has excellent corrosion resistance.

The invention discloses a scale dissolving agent for rapidly dissolving wet-process phosphoric acid scaling substances as well as a preparation method and application of the scale dissolving agent, and belongs to the technical field of descaling. The scale dissolving agent comprises the following components in percentage by weight: 20-30% of a scale remover, 3-5% of a penetrating agent, 0.3-0.8% of a penetrating aid, 0.5-1% of a surfactant, 0.3-0.5% of a synergist and the balance of water, wherein the descaling agent comprises trisodium citrate dehydrate, sodium ethylene diamine tetracetate and ammonium fluoride; the penetrating agent is prepared from dioctyl sodium sulfosuccinate and perfluoroalkyl ethyl acrylate; the permeation auxiliary agent comprises disodium hydrogen phosphate and sodium carbonate; and the synergist is 1-ethyl-3-methylimidazolium acetate. The scale dissolving agent is specially used for dissolving wet-process phosphoric acid scaling substances and has the advantages of being high in scale dissolving speed, mild in reaction condition, low in formula cost and the like, the pH value of the scale dissolving agent is neutral and slightly alkalescent, and corrosion to production equipment is effectively avoided.

Compositions and methods for providing a person with an exogenous and therapeutically effective supply of short chain fatty acids, chlorogenic acid, and, optionally, ketones are disclosed. The compositions include one or more short chain fatty acids (such as butyric acid, butyrate salts, propionic acid, propionate salts, acetic acid, or acetate salts); chlorogenic acid; and, optionally, one or more beta-hydroxybutyrate salts. The compositions and methods are useful for inducing ketosis and / or beta-oxidative activity in a subject. In addition, compositions that include concentrated forms of, and methods of using, chlorogenic acid (alone or in combination with short chain fatty acids and ketones) to induce ketogenesis in a subject are disclosed.

The invention discloses a ferrocene cyano porphyrin burning rate catalyst as well as a preparation method and application thereof. The method comprises the following steps: catalyzing 3-ferrocene acetenyl benzaldehyde with dipyrromethane and pyrrole respectively through trifluoroacetic acid and oxidizing 2, 3-dichloro-5, 6-dicyanobenzoquinone to prepare 5, 15-diphenylporphyrin and 5, 10, 15, 20-tetraphenylporphyrin of which benzene ring meta positions are substituted by ferrocene acetylene respectively, and then adding 2, 3-dichloro-5, 6-dicyanobenzoquinone to prepare the ferrocene acetenyl porphyrin and 5, 10, 15, 20-tetraphenylporphyrin of which benzene ring meta positions are substituted by ferrocene acetylene. And reacting the two porphyrins with acetates of zinc, nickel, ketone and cobalt to obtain corresponding metalloporphyrin. The two series of alkynyl-containing porphyrins are respectively subjected to tetracyanoethylene reaction to obtain cyano ferrocene functionalized porphyrin and metalloporphyrin. The ferrocene cyano porphyrin and the metalloporphyrin provided by the invention not only have better catalytic properties on thermal degradation of AP, but also have the advantage of no migration when being used as a burning rate catalyst of a composite solid propellant. Therefore, the cyano ferrocene functionalized porphyrin and metalloporphyrin provided by the invention have better practical prospects in the field of solid rocket propellant burning rate catalysts.

The invention discloses a lipid nano-micelle preparation method, which comprises: (1) providing an amphiphilic lipid alcoholic solution with a concentration of 20-50 mg / mL and a buffer solution, the buffer solution being selected from a PBS buffer solution, a citrate buffer solution, a Tris-HCl buffer solution or an acetate buffer solution; (2) mixing the alcoholic solution of the amphiphilic lipid and a buffer solution according to the flow velocity ratio of the alcoholic solution of the amphiphilic lipid to the buffer solution of (2-4): 1 by adopting microfluidic mixing equipment to obtain a mixed product; and (3) carrying out liquid change on the mixed product by using a buffer solution to remove the alcohol solvent. On the premise of ensuring the small particle size of the lipid nano-micelle, the uniformity and narrow particle size distribution of the lipid nano-micelle are improved, and the target of batch-to-batch reproducibility is achieved. The method does not need to use dangerous chemicals, is high in safety, is simple to operate, is low in amplification production difficulty by combining a microfluidic technology with a liquid change technology, is low in energy consumption, can effectively improve the production efficiency, and reduces the production cost.

The present invention relates to a method for preparing powdered activated carbon for food processing, and belongs to the technical field of activated carbon. The present invention is based on the fact that the starting raw materials for preparing activated carbon used in the field of food processing are mostly biomass materials with high cellulose, hemicellulose and lignin content, and the raw materials are creatively crushed, washed and dried in sequence, and then deionized water, hydrogen peroxide, 1-ethyl-3-methylimidazole acetate and polyethylene glycol in a certain weight ratio are used as reaction media, coupled with ultrasound, and hydrothermal reaction is carried out in a nitrogen atmosphere, thereby preparing an activated carbon precursor, and finally carbon dioxide is used as an activator, and physical activation is carried out within a certain temperature and time range, and an activated carbon is obtained by naturally cooling to room temperature, which not only has a high specific surface area and excellent adsorption capacity, but also is very suitable for application in the field of food processing, and no large amount of acid and alkali reagents need to be added in the entire preparation process of the activated carbon, and the corrosion to the production equipment is small.

The invention provides a purification method of Tirzeptide, which comprises the following steps: (1) dissolving crude peptide with ammonia water, filtering, and loading a sample into a preparative column; (2) carrying out one-step purification by using a mobile phase A1 and a mobile phase B to obtain a sample with the purity of more than 95%; wherein the pH of the mobile phase A1 is adjusted by alkali liquor; (3) carrying out two-step purification by using a mobile phase A2 and a mobile phase B to obtain a sample of which the purity is greater than 99% and the single impurity is less than 0.10%; wherein the pH of the mobile phase A2 is adjusted by alkali liquor; and (4) converting the mobile phase A3 and the mobile phase B into ammonium salt, and carrying out spray drying treatment to obtain solid Tirzepine. According to the purification method provided by the invention, the refined Tirzeptide refined peptide is obtained through reversed-phase purification 1, reversed-phase purification 2, salt conversion purification and spray drying. According to the scheme, an acetate sample with the purity being greater than or equal to 99.0% and the single impurity being less than or equal to 0.10% can be The single-time sample loading amount is high, the production period is short, the waste liquid amount is small, and environmental protection is facilitated.

This invention discloses a method for synthesizing acetate-promoted amidine cobalt complexes. Specifically, when an N,N'-dialkyl-substituted amidine alkali metal salt reacts with a cobalt precursor, acetate is added as a promoter. The chelating effect of acetate regulates the reaction activity and selectivity, enabling the efficient preparation of amidine cobalt compounds. The reaction yield can reach up to 95%, with a product purity >98%. This invention features readily available raw materials, simple operation, mild reaction conditions, good selectivity for the target product, high synthesis efficiency, and convenient post-processing, making it promising for industrial applications.

The invention provides a sensitizer DPN and a synthesis method thereof, and the method comprises the following steps: carrying out a reaction on phenyl sulfone ethyl acetate and 1-(3-(1-tetrahydropyrrolyl) allylidene) pyrrolidinium acetate to obtain 2-phenyl sulfonyl-5-(1-tetrahydropyrrolyl)-2, 4-ethyl pentadienoate, and carrying out a reaction on the 2-phenyl sulfonyl-5-(1-tetrahydropyrrolyl)-2, 4-ethyl pentadienoate and the 2-phenyl sulfonyl-5-(1-tetrahydropyrrolyl)-2, 4-ethyl pentadienoate to obtain the sensitizer DPN. And finally, carrying out ester exchange with n-nonyl alcohol to obtain a target product DPN. DPN is a delta-amino pentadienoic acid ester compound, the alkyl carbon atom number of an ester group in the structure is 9, the existence of long-chain alkane can improve the good compatibility of the long-chain alkane and matrix resin, so that DPN is a sensitizer with excellent properties and has wide application prospects, meanwhile, the raw materials are easy to obtain, the reaction process is simple, the product properties are excellent, and the yield is up to 77%.

The invention belongs to the field of medicines, and particularly relates to an in-vitro dissolution evaluation method of a montelukast pharmaceutical composition, which comprises the following steps: dissolving the montelukast pharmaceutical composition with a dissolution medium, sampling at different time points, measuring the dissolution amount at each time point, and drawing a dissolution curve of montelukast; the dissolution medium is prepared by adding 0.2-0.5% of triton into a hydrochloric acid or acetate buffer solution with the pH value of 1.2-4.5; the percentage is mass / volume percentage. According to the method, the in-vitro release rate and degree of the pharmaceutical preparation are monitored in a proper in-vitro dissolution evaluation mode, and the quality of a preparation sample is truly reflected.

The present invention belongs to the technical field of comprehensive utilization of waste resources. In order to solve the problem that the flue gas fraction generated by high-temperature calcination in the current preparation process of ceramic abrasive materials cannot be utilized, a deicing agent and a preparation method thereof are provided. The deicing agent comprises the following raw materials in parts by weight: 10 parts of chloride salt, 0.5-2 parts of acetate, 0-4 parts of anti-slip material, 0.02-2 parts of additives, and 5-20 parts of flue gas powder; the chloride salt is a chloride salt containing crystal water or a chloride salt without crystal water. It has a wide temperature application range of 0-40°C and is environmentally friendly and pollution-free. It is widely used in airports, highways, railways, and places where snow melting and ice de-icing are required; under the same conditions, the use of deicing agent is reduced by more than 5%, the melting rate is increased by more than 20%, the degree of metal corrosion is reduced by more than 15%, and the degree of cement concrete corrosion is reduced by more than 13%.

The invention discloses a method for resourceful treatment of furfural wastewater, and belongs to the field of industrial wastewater treatment. A method for resourceful treatment of furfural wastewater comprises the following steps: primary neutralization: adding an alkaline substance to neutralize the furfural wastewater until the furfural wastewater is neutral, converting acetic acid in the furfural wastewater into acetate through a neutralization reaction, and fixing acetate; primary evaporation: carrying out evaporation treatment on the furfural wastewater after the primary neutralization reaction by using a wastewater evaporator to obtain an evaporation concentrated solution; double decomposition: adding acid into the evaporation concentrated solution, and decomposing acetate into salt and acetic acid through double decomposition reaction; secondary evaporation: evaporating a product of the double decomposition reaction, and collecting condensate to obtain an acetic acid solution; secondary neutralization: adding an alkaline substance to neutralize the acetic acid solution obtained by secondary evaporation until the acetic acid solution is neutral, and adjusting COD (Chemical Oxygen Demand) to be more than 25000 to serve as a carbon source for biological sewage treatment; and evaporating to obtain an acetate solid as a raw material for preparing an acetic acid or acetone product.

The invention discloses a method for determining acetate and malate of a compound electrolyte injection (II) by liquid chromatography. According to the method, acetate and malate are detected by adopting high performance liquid chromatography, sulfonic acid type polystyrene and divinylbenzene copolymer cation exchange resin H type is used as a filler, the detection wavelength is 200-210 nm, the flow rate is 0.5-1.0 ml / min, the retention time of acetate is 16 min, the retention time of malate is 12 min, the column temperature is 50-90 DEG C, the sample size is 5-50 microliters, and a mobile phase is a 0.005 mol / L sulfuric acid solution. And calculating the content of acetate and malate by adopting an external standard method. The method is high in specificity, good in precision and high in accuracy, the solution is stable within 48 hours, and the method can be used for quality control in preparation production.

The invention concerns a novel fluorophore compound represented by any of the following General Formula P1, or General Formula P2, or General Formula P3 wherein R1 denotes a saturated or unsaturated alkyl group having from 2 to 10 carbon atoms, or a saturated or unsaturated alkyl group having from 2 to 10 carbon atoms conjugated to a molecule R4 with an ester bond, a thioester bond, or an amide bond, wherein R4 denotes biotin or another organic molecule having a molecular 10 weight of no more than 1'000 Daltons, and wherein A– denotes an anion selected from the group consisting of F-, Cl-, Br-, I-, tetrafluoroborate (BF4 -), hexafluorophosphate (PF6 -), triflate (Tfl-), tosylate (Tos-), acetate, SO4 2-, OH-, and NO3 -.The invention also concerns methods for producing said compounds and a staining composition comprising said compound.

The utility model discloses a cyanide-free imitation gold plating layer structure of an aluminum alloy part, which comprises an aluminum alloy substrate, and a chemical zinc deposition layer, a citrate pre-nickel plating layer, a nickel-copper alloy plating layer, a bright nickel plating layer, a cyanide-free imitation gold plating layer and an electrophoretic varnish coating which are sequentially prepared on the aluminum alloy substrate from inside to outside. According to the cyanide-free gold-imitating plating layer structure of the aluminum alloy part disclosed by the utility model, the binding force of the plating layer is tested by a thermal shock method according to the GB / T 5270-2005'metal covering layer electro-deposition and chemical deposition layer adhesion strength test method on a metal matrix ', the binding force meets the standard requirement, an acetate fog test is carried out for 168 hours according to the GB / T 10125-2021'artificial atmosphere corrosion test and salt spray test', and the binding force meets the standard requirement. And no red corrosives are generated on the surface of a plated part, and the plating layer structure has good corrosion resistance.