50 results about "Thiosulfate" patented technology

The invention relates to a formamidine thiosulfate second-order nonlinear optical crystal and preparation and application thereof, the chemical formula of the crystal material is [CH (NH2) 2] 2SO3S, the molecular weight is 203.27, the crystal material belongs to an orthorhombic crystal system, the space group is P212121, the unit cell parameter is # imgabs 0 # alpha = beta = gamma = 90 degrees, Z = 4, and the unit cell volume is # imgabs 1 #. Under 1064nm laser irradiation, the frequency doubling intensity of the powder is about two times that of monopotassium phosphate crystals, and phase matching can be realized. In addition, the crystal material has a wide light transmission wave band, the ultraviolet absorption cut-off edge is 253 nm, the optical band gap is 4.90 eV, and the crystal material is easy to grow. The wavelength range of the coherent light source can be expanded by using optical frequency conversion technologies such as second harmonic generation and optical parametric amplification. Therefore, the crystal material has important application value in the fields of laser frequency conversion, photoelectric information storage and the like.

To provide a method for recovering gold and / or silver at a high recovery rate from a material containing gold and / or silver.SOLUTION: A gold and / or silver recovery method includes bringing a material containing gold and / or silver into contact with a leaching agent A containing thiosulfate and amino acid. A gold and / or silver recovery method includes bringing a material containing gold and / silver into contact with a leaching agent B containing thiosulfate; and then adding amino acid to the leaching agent B in a state where the material containing metal and / or silver is contacted.SELECTED DRAWING: Figure 1

The invention discloses a preparation method and application of chalcogenide doped graphdiyne, chalcogenide is implanted into a chalcogenide cavity in a simple thermal driving mode by using a chalcogenide cavity formed in para-nitrogen substituted graphdiyne as an anchoring site, so that the chalcogenide is distributed in a lattice shape, and a high-load monatomic graphdiyne material is obtained. The nano-enzyme sensor is constructed by utilizing the activity of peroxidase-like enhanced by the chalcogenide doped graphdiyne to detect bisphenol and thiosulfate ions, and powerful support is provided for monitoring of food safety and environmental safety.

The invention discloses a dicyanoisophorone derivative fluorescent probe and application of the dicyanoisophorone derivative fluorescent probe in Hg < 2 + > detection. The structure of the double-cyano isophorone derivative fluorescent probe is shown as follows: # imgabs0 #. The Hg < 2 + > detection fluorescent probe HPQ-Hg is designed and synthesized, and the fluorescence intensity of the HPQ-Hg can be remarkably improved after the HPQ-Hg responds to Hg < 2 + > by introducing double recognition group thiocarbonate. Through a series of analysis tests, the probe HPQ-Hg shows ultrahigh sensitivity and selectivity, and the detection limit is only 0.52 nM. In addition, the fluorescence intensity of the probe and the mercury ion concentration show a good linear relationship (R2 = 0.9962). Development of the fluorescent probe HPQ-Hg provides a powerful tool for rapid detection of the Hg < 2 + > content in the electronic cigarette atomizer.

The application provides a purification and impurity removal method of a crude nickel-cobalt-manganese sulfate solution, and comprises the following steps: (1) adding thiosulfate to the crude nickel-cobalt-manganese sulfate solution to remove copper; (2) adding phosphate and adjusting the pH value to remove titanium, iron and aluminum; (3) adding iron sulfate and adjusting the pH value to remove phosphorus and silicon; (4) adding a bismuth agent and adjusting the pH value to remove chlorine; (5) adding a fluorine agent to remove calcium and magnesium; and (6) adding an ice rock mineral adsorbent to remove fluorine. The method can efficiently remove iron, aluminum, copper, fluorine, phosphorus, titanium, calcium, magnesium, chlorine, silicon and other elements from the crude nickel-cobalt-manganese sulfate solution, and the loss of main metals is low; the high-purity nickel-cobalt-manganese sulfate solution prepared can directly meet the requirements of a battery preparation grade precursor solution, the process is simple, the operation difficulty is low, and the industrialized production can be easily realized, and the method overcomes the shortcomings of the current high-purity nickel-cobalt-manganese sulfate solution preparation method.

A polymer comprising pyridinium salt moieties, wherein the polymer has the following structure: In this structure, R1 and R6 are each N. At least a portion of R2 and R7 groups in the polymer are each negatively charged counterions selected from the group consisting of carboxylates, nitrates, nitrites, azides, metasilicates, tetraborate, perborates, boronates, oxalatob orates, metaborates, phosphorus-containing anions, halides, sulfates, SO4 -2, HSO4 -1, thiosulfate, dithionite, metabisulfite, persulfate, methanesulfonate, dioctyl sulfosuccinate, 3-sulfopropyl ethoxylate laurylphenyl ether, and combinations thereof. R3, R4, R8, R9, R11, R13, R14, R15, and R16 are each selected from the group consisting of H and groups including one or more carbon atoms. R5 and R10 are any group including one or more carbon atoms. The n is an integer from 2 to about 100,000.

A synchronous nitrogen and carbon removal method for high-salt landfill leachate in an industrial park comprises the following steps: adding magnesium salt into the leachate to remove ammonia nitrogen and total phosphorus in the leachate; the method comprises the following steps of: adding a coagulant into the leachate, so that fine particles are condensed into relatively large particles, further enlarging and compacting the particles through a flocculating agent, forming rapidly-settled large floccules, removing ammonia nitrogen in the leachate, and adsorbing macromolecular organic matters in the leachate; thiosulfate enhanced persulfate advanced oxidation: adding an oxidizing agent into the leachate and generating sulfate free radicals to destroy the structure of organic matters and effectively degrade refractory organic matters; and adding a sodium hypochlorite oxidizing agent into the leachate to remove residual ammonia nitrogen and organic matters so as to ensure that pollutants in the leachate are basically removed. According to the invention, ammonia nitrogen, organic matters and heavy metals with high content in the high-salt industrial landfill leachate can be effectively removed, harmless treatment of the leachate is realized, the treatment efficiency is improved, and the treatment cost is reduced.

Provided are: a gold plating method for achieving soft gold plating; a composition for gold plating; and a plating solution. The gold plating method is performed using a plating solution comprising: a gold sulfite salt; and at least one among thiosulfate ions and trithionic acid ions.

The invention provides an autotrophic denitrification filter material and a preparation method and application thereof, and belongs to the technical field of water treatment.The autotrophic denitrification filter material comprises the following raw materials: a main body material, an adhesive, a foaming agent and a slow-release agent, and the main body material is sulfur powder, thiosulfate and pyrite powder; the preparation method comprises the following steps: mixing the main materials to obtain a component A, mixing the slow-release agent to obtain a component B, mixing the component A and the component B, adding water, uniformly stirring, adding the adhesive and the foaming agent, heating, uniformly stirring, and granulating to obtain the filter material. The invention provides an autotrophic denitrification filter material as well as a preparation method and application thereof, and aims of obtaining a light filter material and quickly starting biofilm formation are fulfilled.

A polymer comprising pyridinium salt moieties, wherein the polymer has the following structure: In this structure, R1 and R6 are each N. At least a portion of R2 and R7 groups in the polymer are each negatively charged counterions selected from the group consisting of carboxylates, nitrates, nitrites, azides, metasilicates, tetraborate, perborates, boronates, oxalatob orates, metaborates, phosphorus-containing anions, halides, sulfates, SO4 -2, HSO4 -1, thiosulfate, dithionite, metabisulfite, persulfate, methanesulfonate, dioctyl sulfosuccinate, 3-sulfopropyl ethoxylate laurylphenyl ether, and combinations thereof. R3, R4, R8, R9, R11, R13, R14, R15, and R16 are each selected from the group consisting of H and groups including one or more carbon atoms. R5 and R10 are any group including one or more carbon atoms. The n is an integer from 2 to about 100,000.

The invention discloses a complex iron method desulfurization device for sulfur recovery tail gas, and relates to the technical field of complex iron method desulfurization. The system comprises a complex iron desulfurization tower, three groups of demisters are arranged at the top of the complex iron desulfurization tower, each demister is provided with a high-pressure flushing assembly, the complex iron desulfurization tower can be communicated with the three groups of demisters respectively, an air inlet pipe is arranged on the right side of the complex iron desulfurization tower, a four-way valve is arranged on the air inlet pipe, and the four-way valve is connected with the four-way valve. And the four-way valve is respectively communicated with the three groups of demisters through the three groups of air inlet guide pipes. According to the invention, three groups of demisters are used alternately, one group is used for desulfurization and normal demisting, the other group is used for removing impurities from tail gas, so that attached salt crystals (such as ammonium sulfate and thiosulfate) are softened, melted or loosened, and the last group is used for carrying out high-strength washing on the heated demisting plate, so that softened dirt and particles are thoroughly removed; the industrial problem that a complex iron type desulfurization demister is easy to block is solved.

The application discloses a method for detecting microRNA-21 by photothermal analysis. The method mixes lock-step chain functionalized gold nanoparticles, substrate chain functionalized gold nanoparticles, microRNA-21, divalent aqueous manganese salt and water to generate HRP; H2S is generated by the reaction of thiosulfate and hydrogen peroxide catalyzed by HRP, and then the etching of Prussian blue by H2S affects the photothermal performance of Prussian blue, thereby constructing the linear relationship between the concentration of microRNA-21 and temperature, and realizing the signal detection of the target microRNA-21. The method ingeniously combines the PB with the 3DDNA Walker-based signal amplification, greatly improves the sensitivity, and realizes the low-concentration and high-selectivity detection of the target.

A shear band useful, for example, in a non-pneumatic tire is provided. The shear band uses staggered reinforcing elements positioned within a shear layer of elastomeric material. A variety of configurations may be used to create staggered positioning of the reinforcing elements, including, for example, a horizontal diamond configuration or a vertical diamond configuration. The shear layer is formed from a rubber composition having very low hysteresis reinforced with silica and carbon black and one or more anti-reversion chemicals selected from the group consisting of 1, 3-bis ((3-methyl-2, 5-dioxopyrrol-1-yl) methyl) benzene (CAS number: 119462-56-5) and hexamethylene 1, 6-bis (thiosulfuric acid) disodium salt dihydrate (CAS number: 5719-73-3).

The invention relates to the technical field of electrode materials, in particular to a sulfide solid electrolyte and a preparation method thereof, and the preparation method is characterized by comprising the following steps: (1) selecting a lithium source and at least three of a sulfur source, a phosphorus source, elemental sulfur and a halogen source as raw materials, and mixing; the lithium source comprises at least one of lithium carbonate, lithium sulfate, lithium oxide, lithium hydroxide, lithium thiosulfate and lithium sulfite; and (2) putting the mixture prepared in the step (1) into a sintering furnace under the protection of inert gas, and introducing reducing gas for sintering treatment to obtain the sulfide electrolyte. The sulfide solid electrolyte provided by the invention adopts the lithium salt of non-lithium sulfide as the lithium source, the sulfide electrolyte is prepared by a one-step method, an intermediate lithium sulfide preparation link is omitted, and the sulfide solid electrolyte has the characteristics of low cost, simple process, batch industrial production and the like.

A thiosulfate sensor having an electrode assembly including a sensing electrode including electrochemically deposited metal, a counter electrode, and a reference electrode is described. The thiosulfate sensor further includes an electrolyte chamber including an electrolyte solution therein, the electrolyte chamber receiving the electrode assembly through a first opening to immerse the electrode in the electrolyte and an electrolyte chamber porous membrane covering a second opening, where the porous membrane is configured to receive a flowing fluid therethrough to allow the detection of thiosulfate in the flowing fluid.

The invention relates to a hollow high-entropy transition metal hydroxide crystal and a preparation method thereof. The preparation method comprises the following steps: providing a cuprous oxide crystal; the preparation method comprises the following steps: respectively adding a nickel salt precursor, a cobalt salt precursor, a chromium salt precursor, a manganese salt and / or iron salt precursor and cuprous oxide crystals into an ethanol / water mixed solvent to prepare uniformly dispersed suspension liquid; adding polyvinylpyrrolidone into the suspension, and fully mixing to obtain a mixed solution; and dropwise adding a reactant containing thiosulfate radicals into the mixed solution, reacting, and separating to obtain the hollow high-entropy transition metal hydroxide crystal. The method is simple in process, mild in condition, short in reaction time, low in requirement for precision of equipment and instruments, high in controllability of product morphology, good in repeatability and especially suitable for large-scale industrial production.

The present application provides a method for removing thiosulfate from a nickel sulfate solution preparation process. The method comprises the following steps: a slurrying procedure: slurrying a nickel raw material to obtain a slurry, wherein the nickel raw material comprises at least one of high-grade nickel matte, low-grade nickel matte, nickel ore concentrate, and a nickel sulfide intermediate product; an atmospheric pressure leaching procedure: performing atmospheric pressure acid leaching on the slurry to leach out at least part of the metal nickel from the nickel raw material, to obtain an atmospheric pressure leaching residue and an atmospheric pressure leaching solution; a pressurized leaching procedure: performing pressurized acid leaching on the atmospheric pressure leaching residue to leach out nickel contained in the atmospheric pressure leaching residue, to obtain a pressurized leaching residue and a pressurized leaching solution; and a first recycling procedure: performing a first recycling treatment on the pressurized leaching solution to obtain a recycled solution having a copper ion concentration of 2-40 g / L, and returning the recycled solution to the atmospheric pressure leaching procedure for mixing with the slurry for atmospheric pressure acid leaching. The method provided in embodiments of the present application can effectively separate nickel from impurities such as thiosulfate, thereby obtaining a nickel product having better quality.

A full-scale lead-free oxygen sensor comprises a shell, an electrolyte arranged in the shell, a tin anode and a catalytic electrode which are immersed in the electrolyte, and an electrolyte adsorption film is arranged between the tin anode and the catalytic electrode. The electrolyte comprises caustic alkali, carbonate, bicarbonate and thiosulfate. Due to the adoption of the alkaline electrolyte, the hydrogen evolution competitive reaction of the lead-free oxygen sensor is avoided, so that the oxygen concentration measurement accuracy of the lead-free oxygen sensor is improved.

The invention discloses a process for producing zinc thiosulfate through intermediate conversion of ammonium thiosulfate. The process comprises the following steps: S1, firstly, preparing ammonium thiosulfate, zinc hydroxide and sulfur dioxide; s2, mixing an ammonium thiosulfate solution and zinc hydroxide; s3, putting the mixed ammonium thiosulfate solution and zinc hydroxide into a reaction kettle, adding water, controlling temperature and stirring to generate a zinc thiosulfate solution and ammonium hydroxide, dissociating ammonium hydroxide into ammonia gas and water in water, and then reacting the ammonia gas with sulfur dioxide to generate ammonium thiosulfate for recycling; s4, carrying out filtering; and S5, performing packaging. Ammonia water and sulfur dioxide react to produce ammonium thiosulfate, the ammonium thiosulfate and zinc hydroxide are subjected to a replacement reaction to generate zinc thiosulfate, and meanwhile, the by-product ammonium thiosulfate generated by purifying waste gas sulfur dioxide is selected, so that the pollution to the environment is reduced, and the production cost is reduced.

The present application relates to a kind of gold extractant and its preparation method, application, the gold extractant is the aqueous solution containing inorganic copper salt, thiosulfate and EDDHA-Na, wherein, the molar concentration of Cu in the gold extractant is 0.005M-0.05M, S2O3 2+ Molar concentration is 0.005M-0.05M, S2O3 2‑ Molar concentration is 0.1M-1M;EDDHA-Na and water volume ratio is 1-20%.EDDHA-Na is mainly complexed with copper ion to form EDDHA-Cu complex ion, reduce the formation of copper-ammonia complex ion, thereby reducing the oxidation of thiosulfate ion, while EDDHA-Cu complex ion has catalytic effect on the dissolution of gold in thiosulfate ion solution, improve the leaching efficiency of gold.

The present invention relates to a trivalent chromium-based electrolysis bath, a process using such a bath, and a substrate coated with a chromium deposit obtained by such a process. According to the invention, the electrolysis bath comprises 1 to 2.5 mol / L of trivalent chromium, 2 to 12 mol / L of a first inorganic complexing agent in the form of chloride, fluoride, and mixtures thereof, and 1.5 to 7.5 mol / L of a second inorganic complexing agent different from the first complexing agent and selected from chloride, fluoride, sulfate, sulfite, thiosulfate, and mixtures thereof. The bath further comprises 0.001 to 0.100 mol / L of an ionic metallic additive selected from the cationic forms of iron, manganese, aluminum, and mixtures thereof. The electrolysis bath has a pH between 1.5 and 4.0 and is essentially free of organic compounds.

The present invention relates to a second-order nonlinear optical crystal of formamidine thiosulfate, and its preparation and application. The crystal material has a chemical formula of [CH(NH2)2]2SO3S, a molecular weight of 203.27, belongs to the orthorhombic crystal system, has a space group of P212121, unit cell parameters of α=β=γ=90°, Z=4, and a unit cell volume of . The formamidine thiosulfate crystal material of the present invention has excellent optical properties. Under 1064nm laser irradiation, the powder frequency harmonic intensity is approximately twice that of potassium dihydrogen phosphate crystal, and phase matching can be achieved. In addition, the crystal material has a wide light transmission band, an ultraviolet absorption cutoff edge of 253nm, an optical band gap of 4.90eV, and is easy to grow. Optical frequency conversion technologies such as second harmonic generation and optical parametric amplification can be used to expand the wavelength range of coherent light sources. Therefore, the crystal material has important application value in fields such as laser frequency conversion and optoelectronic information storage.

The application discloses a complex iron method desulfurization device for sulfur recovery tail gas and relates to the technical field of complex iron method desulfurization.The complex iron method desulfurization device comprises a complex iron desulfurization tower, the top of the complex iron desulfurization tower is provided with three groups of mist eliminators, the mist eliminators are provided with high-pressure flushing components, the complex iron desulfurization tower can be connected with the three groups of mist eliminators respectively, the right side of the complex iron desulfurization tower is provided with an air inlet pipe, a four-way valve is arranged on the air inlet pipe, and the four-way valve is connected with the three groups of mist eliminators through three groups of air inlet pipes respectively.Through the alternate use of the three groups of mist eliminators, one group carries out normal desulfurization and mist removal, another group removes impurities from the tail gas, the attached salt crystals (such as ammonium sulfate and thiosulfate) are softened, melted or become crisp, the last group carries out high-strength flushing on the heated mist removal plate, and the softened dirt and particles are completely removed, so that the industry's stubborn problem that the complex iron type desulfurization mist eliminator is prone to blockage is solved.

The invention discloses a modified coal gangue material and a preparation method and application thereof, and belongs to the technical field of material preparation and precious metal recovery. The modified coal gangue material is prepared from high-aluminum and high-silicon coal gangue and KH-580 through a solution polymerization reaction, and the material is simple in synthesis process, low in cost, economical and environmentally friendly. The modified coal gangue material has relatively high adsorption performance, excellent selectivity and good adsorption capacity on [Au (S2O3) 2] < 3->. According to the method, the thought of treating waste with waste is combined, the waste coal gangue is introduced into application of precious metal recovery, and gold in the thiosulfate gold leaching liquid can be effectively recovered with low cost.

The invention relates to a tin electroplating bath comprising tin ions; titanium ions as a reducing agent suitable for reducing tin ions to metallic tin; and at least one compound selected from the group consisting of sulfite, dithiosulfonate, thiosulfate, tetra-thiosulfonate, polythiosulfonate, pyrosulfite, sulfide, disulfide, polysulfide, elemental sulfur or mixtures thereof. The invention further discloses a method for depositing tin or tin alloys on a substrate surface. The tin electroplating bath is particularly suitable for use in the electronics and semiconductor industry.

The invention relates to the technical field of purification of intermediates in vitamin B1 production, in particular to a 2-methyl-4-amino-5-(thioformylthio) pyrimidine sodium salt crystallization process which comprises the following steps: mixing an aminopyrimidine aqueous solution with carbon disulfide, starting stirring and controlling the system temperature to be 28 DEG C; a sodium hydroxide solution with the mass fraction of 30% is dropwise added at the speed of 1.5 g / min, the pH value of the system is maintained to be 10.2 in the dropwise adding process, and heat preservation reaction is conducted for 1.5 h after dropwise adding is completed; by constructing a synergistic system of solvent selection, temperature control and reaction conditions, an impurity transfer path is effectively cut off, the extraction yield and purity of an intermediate are greatly improved, meanwhile, the content of key impurities is remarkably reduced, a guarantee is provided for high-quality production of downstream thiamine thiosulfate and thiamine nitrate, and compared with a traditional process, the method has the advantages that the cost is reduced, and the production efficiency is improved. And the product quality stability is greatly improved.

The invention discloses a flotation reagent and method for sulfur and arsenic mineral activating agent and tin concentrate reverse flotation desulfurization and dearsenification, and belongs to the technical field of mineral processing. The sulfur-arsenic mineral activating agent comprises thiosulfate, soluble lead salt and soluble copper salt, can activate arsenic-sulfur minerals such as arsenopyrite (FeAsS2), pyrite (FeS2) and pyrrhotite (Fe1-xS) in a high-selectivity mode, enhances the flotation performance of the arsenic-sulfur minerals, and is used in cooperation with a cassiterite inhibitor, a sulphide ore collecting agent and a foaming agent, so that the flotation efficiency of the arsenic-sulfur minerals is improved, and the flotation efficiency of the arsenic-sulfur minerals is improved. The method is particularly suitable for flotation removal of arsenic-sulfur minerals in the tin concentrate, the tin loss can be remarkably reduced while the tin concentrate desulfurization and dearsenification efficiency can be greatly improved, and the environmental protection pressure of subsequent smelting is effectively relieved.

This application discloses a method for catalytic wet oxidation treatment of sodium thiosulfate. The method includes: contacting a raw material containing sodium thiosulfate with a catalyst and an oxidant to undergo an oxidation reaction to obtain sodium sulfate; wherein the catalyst includes a support and an active component; the support is activated carbon; the active component includes a transition metal active element; the transition metal active element is selected from one to three of Mn, Fe, Co, Ni, and Cu. This method can achieve oxidation of more than 60% of 10000 mg / L thiosulfate, and the catalyst activity can be restored by water washing and regeneration after a decrease. The catalyst morphology remains good after 30 days of continuous operation.

The invention discloses a preparation method of a double-effect phosphorus and nitrogen removal sulfur-based mineral water purification base material, the sulfur-based mineral water purification base material comprises a phosphorus and nitrogen removal agent component and a phosphorus and nitrogen removal functional mineral gelling material component, and the phosphorus and nitrogen removal agent comprises ferrous sulfide, ferrous sulfate, calcium carbonate, silica fume and anhydrous sodium thiosulfate; the mineral gelling material with the phosphorus and nitrogen removal function comprises low-alkali Portland cement 42.5, zeolite, diatomite, medical stone, fly ash and hydrogen peroxide. The preparation method comprises the following steps: pre-preparing the phosphorus and nitrogen removal agent components, pre-preparing the phosphorus and nitrogen removal functional mineral gelling material components, and preparing a composite finished product. Compared with the prior art, the long-acting phosphorus and nitrogen removal effect is achieved, and the problems of water eutrophication, excessive phosphorus and nitrogen and the like can be effectively solved. The water purification base material has the advantages of simple preparation process, low cost, stable performance and the like, and has a wide application prospect.

Provided herein are methods for maintaining physiological levels of thiosulfate in a subject undergoing hemodialysis. Also provided herein are methods of administering pharmaceutically acceptable sodium thiosulfate to a subject undergoing hemodialysis.