27 results about "Thiocyanate" patented technology

The application belongs to the technical field of thiocyanate detection, and specifically relates to a method for detecting thiocyanate based on inherent internal standard surface-enhanced Raman scattering substrate, which comprises the following steps: S1. Preparing a thiocyanate standard curve: taking the thiocyanate concentration as the horizontal coordinate, and the ratio of the peak intensity at the characteristic peak of thiocyanate with different concentrations to the peak intensity at the internal standard peak of a bare silver SERS chip as the vertical coordinate to establish a linear regression equation, thereby obtaining the thiocyanate standard curve; S2. Detecting experimental precision; S3. Quantitatively detecting the thiocyanate content: detecting the SERS signals of the thiocyanate sample to be measured and the bare silver SERS chip, and comparing the SERS signals with the thiocyanate standard curve in step S1 to obtain the thiocyanate content to be measured. In the application, the inherent peak generated by the substrate silver oxide in the bare silver SERS chip is used as an internal standard reference, no additional internal standard substance is added, the substrate detection performance is not affected, the linear fitting of the standard curve equation is better, the influence of errors is greatly reduced, the quantification is more accurate, and the thiocyanate can be rapidly detected.

A novel bis-ligand chalcopyrite collector and a preparation method and application thereof. The collector is prepared by first synthesizing an intermediate oxalyl diisothiocyanate from oxalyl chloride and thiocyanate, and then reacting the intermediate with an amine or an alcohol using a one-pot method. The collector provided by the present disclosure can form more stable dual-site adsorption on the chalcopyrite surface, thereby generating a more stable double-chelate-ring structure than the single-site adsorption of a traditional chalcopyrite collector such as xanthate and dithiophosphate. The collector not only has higher collection ability and excellent selectivity, but also can achieve efficient copper-sulfur separation even under a low-alkalinity condition. The preparation process of the collector is simple and operable, facilitating the flotation of chalcopyrite and its separation from pyrite.

The application provides a method for preparing calcium thiocyanate by using desulfurization waste liquid, calcium nitrate and ammonium thiocyanate are respectively dissolved into 30-50% solution, the calcium nitrate solution is slowly dropped into the hot ammonium thiocyanate solution under the conditions of heating and stirring, under the heating state, the double decomposition reaction occurs to generate calcium thiocyanate and ammonium nitrate, with the continuous heating and the evaporation of water, the concentration of calcium thiocyanate gradually increases, the ammonium nitrate is heated and decomposed to generate nitrogen oxide and ammonia gas, the generated process gas rich in nitrogen oxide and ammonia gas is condensed and introduced into the coking ammonia removal and denitration section for treatment, and finally the evaporation and concentration obtain about 50% calcium thiocyanate product. The method uses industrial waste to provide raw materials, and the production cost is low; the process tail gas generated in the reaction only needs to be treated by the existing ammonia removal and denitration device of the coking enterprise, without increasing additional equipment, thereby saving the expenditure; and the method has environmental protection benefit, social benefit and economic benefit.

This invention discloses a perovskite active layer passivating agent, a perovskite solar cell, and a preparation method thereof, relating to the field of perovskite solar cell technology. The invention uses a combination of formamidine thiocyanate (FASCN) and dodecyl ammonium bromide (DABr) as passivating agents. Through the "phase screening" effect of FA⁺ and the coordination regulation of SCN⁻, n=3 single-phase quasi-two-dimensional perovskite is selectively generated on the wide-bandgap perovskite surface, completely suppressing the n=2 phase and eliminating multiphase energy level disorder. Simultaneously, it achieves triple synergistic passivation: SCN⁻ coordinates and passivates lead defects, Br⁻ fills halogen vacancies, and FA⁺ occupies A-site vacancies, resulting in a 27% reduction in trap density and a 12-fold increase in carrier lifetime. The resulting perovskite solar cell exhibits a 6.8% increase in efficiency, significantly enhanced thermal stability, and a 4-fold increase in T80 lifetime. Furthermore, it is fully compatible with existing preparation processes and suitable for large-scale production.

Compositions and methods are disclosed for improving seed quality. For example, treating a stand of seed crops with a seed crop treatment that includes an effective amount of cyanate, thiocyanate, an acceptable salt of cyanate or thiocyanate, an ester of cyanate or thiocyanate, an isocyanate or isothiocyanate, or a combination thereof results in one or more improved seed qualities compared to a control. The improved seed qualities may include, but are not limited to, enhanced seed vigor, increased quantity of saleable seed, increased proportion of saleable seed, increased uniformity of seed shape and size, and desirable bag weight.

The present application relates to the technical fields of medical and pharmaceutical chemical synthesis, and particularly relates to a synthesis method of 3-thiocyanatospiro cyclobutyl oxindole compounds, which comprises the following steps: in a reactor, compound 1, compound 2, a catalyst, an additive and a solvent are stirred for 30 minutes at room temperature, after the reaction is completed, the crude product is obtained by reduced pressure distillation, and the 3-thiocyanatospiro cyclobutyl oxindole compound is obtained by column chromatography and thin layer chromatography purification. N The present application takes phenyl bicyclo[1.1.0]butane-1-formamide compounds and thiocyanate as raw materials, and promotes the synthesis of 3-thiocyanatospiro cyclobutyl oxindole compounds by an oxidant. The present application has the advantages of simple synthesis steps, mild conditions, safe operation, good functional group compatibility, high reaction conversion, low cost and the like, and is conducive to industrial production.

This invention provides a method for purifying erythromycin thiocyanate. The method first involves dissolving crude erythromycin thiocyanate in an ester solvent under alkaline conditions; then adding thiocyanate and crystallizing under neutral to slightly alkaline conditions; followed by membrane-assisted cooling for secondary crystallization; and finally, filtration and drying to obtain purified erythromycin thiocyanate. This invention uses a membrane-assisted cooling coupled crystallization method instead of the traditional cooling crystallization method, successfully controlling the nucleation rate, eliminating explosive nucleation, and significantly improving the content and yield of erythromycin thiocyanate A.

The application discloses a kind of concrete anticorrosive coating with antibacterial and self-repairing and preparation method thereof, the anticorrosive coating includes the following weight parts of raw materials: 20-50 parts alicyclic epoxy resin, 100-150 parts vinyl resin, 30-50 parts multifunctional curing agent, 5-15 parts polyvinylamine resin, 10-25 parts silicone resin, 1-3 parts silane coupling agent, 0.5-2 parts initiator, 3-8 parts epoxy resin curing agent and 30-50 parts filler;The multifunctional curing agent includes the following weight parts of raw materials: 10-15 parts vinyl epoxy, 15-20 parts allyl thiocyanate and 5-15 parts allyl methyl disulfide.The concrete anticorrosive coating of the application contains multifunctional curing agent, which has thiocyanate group and disulfide group, the thiocyanate group can effectively inhibit the activity of escherichia coli and staphylococcus aureus, prevent escherichia coli and staphylococcus aureus from corroding the coating, and improve the service life of the anticorrosive coating;Disulfide group can undergo reversible rupture and recombination, with self-repairing ability.

A battery cell, a battery apparatus, an electrical apparatus, a composite positive electrode material and a preparation method therefor. The battery cell comprises a positive electrode sheet and a negative electrode sheet. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active layer stacked on at least one surface of the positive electrode current collector. The positive electrode active layer comprises a composite positive electrode material. The composite positive electrode material comprises a core and a coating layer coating the surface of the core. The core comprises a lithium-manganese-based positive electrode active material. The coating layer comprises a thiocyanate. The positive electrode of the battery cell uses the composite positive electrode material in which the lithium-manganese-based positive electrode active material is coated with the thiocyanate. On the basis of the effect of the thiocyanate, the capacity retention rate, specific capacity, and initial Coulombic efficiency of the battery cell can be improved.

This invention relates to the field of hematology analysis technology, and in particular to a diluent for hematology analysis, its preparation method, and its uses. The diluent comprises the following components: 0.5-15 g / L of inorganic salt, 0.01-5.0 g / L of preservative, and 0.1-0.5 g / L of stabilizing agent; the solvent of the diluent is water; the diluent also includes an anti-precipitant, selected from one or more of salt-based and organic anti-precipitants; the salt-based anti-precipitant includes one or more of thiocyanate and nitrate, with a content of 2.0-5.0 mmol / L; the organic anti-precipitant includes one or more of trehalose, mannitol, and amino acid ionic liquids, with a content of 4.0-8.0 mmol / L. In this diluent, the components work synergistically to reduce the maintenance cost of the hematology analyzer, increase its service life, and improve detection efficiency.

A polymer resin and a preparation method therefor, an optical lens, and smart glasses, relating to the technical field of resin materials. The polymer resin comprises a thioamide group, a thioether group, and an aromatic group, and is prepared from the following raw materials: a thiocyanate, a thiol compound, an organic base catalyst, and a solvent.

Organic-inorganic halide perovskite (OIHP) materials through their promising material properties, simple solution processability, low material cost, high photon absorption, carrier mobilities, and tunable band gap are suitable for large area coatings in the fabrication of optical displays, LEDs, photovoltaic cells and photodetectors. However, OIHP stability and shelf life have been limited to date as exposed perovskite films do not survive long in ambient air causing further issues for large scale OIHP based device production and deployment. Accordingly, the inventors have established three-cation material system variants using an innovative single solution thiocyanate (SCN) doped three cation material system allowing tailoring of perovskite grain size and microstructure to minimize degradation from exposure to atmospheric conditions. Further, solvent engineering techniques using the innovative single solution SCN doped three cation material system established by the inventors allow for large area processing, compact OIHP films with large crystal grains (>4 μm), and passivated grain boundaries.

The application relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell and a photovoltaic module. The perovskite solar cell comprises a substrate, a composite hole transport layer, a perovskite layer and an electron transport layer. The substrate comprises a transparent conductive layer, the composite hole transport layer comprises a self-assembled monolayer and a thiocyanate organic salt modification layer, and the self-assembled monolayer, the thiocyanate organic salt modification layer, the perovskite layer and the electron transport layer are sequentially stacked on the transparent conductive layer in the direction away from the substrate. The thiocyanate organic salt modification layer is added, direct contact between the perovskite layer and the transparent conductive layer can be avoided, the spreading effect of the perovskite layer on the self-assembled monolayer is improved, and then the performance and stability of the perovskite solar cell are improved.

The present invention relates to the technical field of polymer resins. Disclosed are a polymer resin and a preparation method therefor, an optical lens and smart glasses. The polymer resin comprises a thioamido group and an aromatic group. The polymer resin is prepared from the following raw materials: a thiocyanate, an amino compound and a solvent.

This invention discloses an siRNA that inhibits IL-25 gene expression and its application. The siRNA sequence provided by this invention can specifically knock down IL-25 expression levels. Furthermore, by modifying the sense strand with thiocyanate, this invention enhances the ability of siRNA to resist enzymatic hydrolysis in serum and prolongs its duration of action without significantly increasing cytotoxicity, thus bringing important application value to the treatment of autoimmune diseases.

The application provides a perovskite solution, a perovskite active layer and a preparation method thereof, and a perovskite / crystalline silicon laminated solar cell and a preparation method thereof. The perovskite solution comprises a perovskite precursor material, a first additive, a second additive and a first solvent; the first additive is chloromethylamine; the second additive is lead thiocyanate; and the perovskite precursor material comprises CsI, DMAI, MAI and PbI2. The specific perovskite precursor material can obtain a pure iodide perovskite material, and effectively solve the light-induced phase separation phenomenon of the existing mixed halide perovskite material. The specific first additive and the second additive introduced into the perovskite solution can improve the crystallization quality of the pure iodide perovskite material, and improve the crystallinity, so as to reduce the surface defects of the perovskite active layer, improve the thermal stability and the chemical stability, and further improve the photoelectric conversion efficiency and the stability of the prepared perovskite / crystalline silicon laminated solar cell.

This invention relates to a method for extracting vitamin B12 from vitamin B12 fermentation broth, comprising the steps of pretreatment, ceramic membrane filtration, adsorption, addition of thiocyanate for cyanation via a microreactor, concentration, column chromatography, and crystallization drying. The purpose of this invention is to optimize the vitamin B12 extraction and purification process, providing a method with safe process steps, high extraction yield, and finished product quality meeting the standards of overseas customers.

This utility model relates to the field of thiocyanate production technology, specifically to a thiocyanate evaporation kettle, including a kettle body and a top cover disposed at the upper end of the kettle body. Heating tubes are arranged parallel to each other around the inner sidewall of the kettle body. A stirring assembly is provided on the top cover. The stirring assembly is equipped with an elastic scraper component corresponding to the horizontal height of the heating tubes. The elastic scraper component is used to scrape off the crystalline scale layer on the outer surface of the heating tubes and the inner side of the kettle body next to the heating tubes. The stirring assembly drives the elastic scraper component to rotate synchronously. The elastic scraper component moves close to the outer surface of the heating tubes and the inner side of the kettle body above and below the heating tubes with the stirring action, removing the attached crystalline scale layer through mechanical scraping. This solves the problem of difficult removal of crystalline scale layer on the surface of the heating tubes and the inner wall of the kettle body in traditional evaporation kettles, reduces the decrease in heat transfer efficiency caused by scale accumulation, reduces the frequency of shutdown for cleaning, and ensures the continuity and efficiency of thiocyanate solution evaporation and concentration.

Electrochemical cell in which lithium ions move back and forth, comprising: Electrode comprising a chalcogen-containing electroactive material, wherein the chalcogen-containing electroactive material comprises elemental selenium or a selenium-containing active material; and Electrolyte system, including: one or more lithium salts selected from the group consisting of: lithium bis(fluorosulfonyl)imide (LiN(FSO2)2), bis(trifluoromethane)sulfonimide lithium salt (LiN(CF3SO2)2), lithium hexafluorophosphate (LiPF6), lithium hexafluoroarsenate (LiAsF6), lithium tetrafluoroborate (LiBF4), lithium perchlorate (LiClO4), lithium iodide (LiI), lithium bromide (LiBr), lithium thiocyanate (LiSCN), lithium difluoro(oxalato)borate (LiBF2(C2O4)), LiPF3(C2F5)3, LiPF4(CF3)2, lithium tetrafluoro(oxalato)phosphate (LiPF4(C2O4)), LiPF3(CF3)3, LiSO3CF3 and combinations thereof, and one or more solvents selected from the group consisting of: cyclic carbonates, linear carbonates, aliphatic carboxylic esters, γ-lactones, chain structure ethers, cyclic ethers and combinations thereof, wherein the electrolyte system is essentially free of lithium nitrate (LiNO3) and the electrochemical cell has a minimum charge potential of more than or equal to about 0.8 V to less than or equal to about 1.8 V.

This invention relates to the field of anode materials, specifically to an anode material and a new energy battery, which is made of MXene and a thiocyanate ionic liquid. The MXene is TiVCTx and / or V2CTx, and the thiocyanate ionic liquid is an imidazole thiocyanate ionic liquid. The method of this invention achieves the green, efficient, and low-cost preparation of high-performance anode materials through a simplified process of "one-step hydrothermal + heat treatment". The resulting anode material combines the high conductivity and structural stability of MXene with the high specific capacity and multi-electron reaction characteristics of sulfides, exhibiting comprehensive advantages of high specific capacity, excellent cycle stability, and good rate performance in new energy batteries.

This utility model discloses a stirring and dissolving device for the preparation of thiocyanate, comprising a tank, a gantry frame mounted on the upper part of the tank, and a pulverizing barrel mounted on the inner top surface of the gantry frame. A mounting shaft passes through the tank, gantry frame, and pulverizing barrel via bearings. A drive motor is mounted on the upper part of the gantry frame, and the output end of the drive motor is connected to the mounting shaft via a coupling. A filter basket is installed inside the tank, and an electrical control box is mounted on the side wall of the tank. The electrical control box contains a control panel, a battery, and a synchronization controller. An inlet pipe is fixedly inserted through the upper part of the tank. Beneficial effects: This utility model, with its filter basket and piston plate, prevents undissolved solid raw materials from clogging the discharge pipe, thus improving the practicality of the stirring and dissolving device for the preparation of thiocyanate.

The aqueous suspensions, their production and use as accelerators for mineral binders, the suspensions comprising a) 5-65 w %, relative to the total weight of the aqueous suspension, of calcium hydroxide in the form of suspended nanoparticles, b) optionally at least one organic compound for stabilizing the aqueous suspension against sedimentation, and c) at least one salt of alkali metal or alkaline earth metal, preferably at least one of hydroxide, nitrate, nitrite, phosphate, phosphite, sulfate, thiocyanate, carbonate, bicarbonate, silicate, aluminate, formate, acetate, lactate, citrate, tartrate, and / or gluconate of alkali metal or alkaline earth metal.

This application relates to a battery cell, a battery device, an electrical device, a composite cathode material, and a method for preparing the same. The battery cell provided in this application includes a positive electrode and a negative electrode. The positive electrode includes a positive current collector and a positive active layer stacked on at least one surface of the positive current collector. The positive active layer contains a composite cathode material, which includes a core and a coating layer covering the surface of the core. The core includes a lithium-manganese-based cathode active material, and the coating layer includes a thiocyanate. This application's battery cell uses a composite cathode material with a thiocyanate coating on the lithium-manganese-based cathode active material. The thiocyanate improves the battery cell's capacity retention, specific capacity, and initial coulombic efficiency.

The invention discloses a photoelectric device and a preparation method thereof, and relates to the technical field of photoelectricity. The photoelectric device comprises a first electrode, a functional layer and a second electrode which are stacked in sequence. The photoelectric device further comprises a first barrier layer located between the first electrode and the functional layer, and the material of the first barrier layer comprises a first sulfide; and / or the photoelectric device further comprises a second barrier layer located between the second electrode and the functional layer, and the material of the second barrier layer comprises a second sulfide; and / or, the material of the functional layer comprises a semiconductor material and a third sulfide; wherein the first sulfide, the second sulfide and the third sulfide are respectively and independently selected from one or more of thioacid salt, thiocyanate, sulfydryl compounds and thioamide compounds. The photoelectric device provided by the invention has relatively high photoelectric efficiency.

Hypergolic two-component system for space propulsion, comprising an oxidizer and a fuel which are provided separately and are brought into contact with each other in a thruster to react, wherein the oxidizer comprises hydrogen peroxide, characterized in that the fuel is a multi-component mixture comprising ammonium thiocyanate, a molecular liquid and an ionic liquid comprising a thiocyanate anion and one or more cations.