35 results about "Thiosulfuric acid" 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.

The purpose of the present invention is to improve a rubber composition containing a rubber component and cellulose fibers, and to provide a method for manufacturing such a rubber composition having excellent strength. Specifically, the present invention provides a rubber composition containing: component A which is a rubber component; component B which is a cellulose-based filler; component C which is a water-soluble polymer, preferably, a carboxymethyl cellulose having a B-type viscosity of 20 mPa·s or more when made into a 1 mass%-aqueous solution (25°C, 30 rpm), or a salt of the carboxymethyl cellulose; and, preferably, component D which is a crosslinkable compound having an amino group, and a thiosulfate group or an α,β-unsaturated carbonyl group. Also provided is a method for manufacturing the rubber composition, the method comprising a step for mixing and drying components A-C, preferably components A-D.

The invention provides a flow battery containing a thiosulfate and potassium sulfide mixed electrolyte, a negative electrode electrolyte is a mixed solution formed by dissolving thiosulfate and potassium sulfide in a supporting electrolyte solution, the concentration of thiosulfate ions (S2O3 < 2->) is 0.1-2 mol / L, and the molar ratio of potassium sulfide (K2S) to potassium thiosulfate (K2S2O3) ranges from 1: 0.2 to 1: 2; and the supporting electrolyte is an alkaline or neutral electrolyte solution with the concentration of 1-3 mol / L. By introducing thiosulfate radical (S2O3 < 2->), the thiosulfate radical and elemental sulfur form a soluble polythiosulfate complex in a negative electrode electrolyte, solid sulfur deposition is effectively inhibited, and the problems of electrode pore blockage, flow channel blockage, active substance loss and the like caused by solid sulfur deposition in an existing polysulfide or sulfide system flow battery are solved.

Composition comprising a thiopyridinone compound and an aminosulfonic compound. The present invention relates to a composition, in particular a cosmetic composition, comprising at least one compound of formula (I), at least one aminosulfonic compound of formula (II), and strictly less than 0.2% by weight of an alkali salt of thiosulfuric acid and / or its solvates such as hydrates, or totally free of an alkali salt of thiosulfuric acid and / or its solvates such as hydrates. Figure for the abstract: none

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.

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 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.

The invention relates to the technical field of gold plating solution preparation, in particular to a green sustainable cyanide-free gold plating solution preparation method and device, and the method comprises the following steps: S1, preparing reagents required for preparation: a chloroauric acid solution, a sodium thiosulfate solution, GSH, potassium hydroxide and dilute sulfuric acid; s2, preparing HAu (GSH) 2; s3, preparing a gold plating solution; in the washing process, a third motor is started, the third motor drives a reciprocating lead screw to rotate through an output shaft, the reciprocating lead screw drives a sealing plate to move upwards, the sealing plate drives a screening basket to move upwards, in the moving process of the screening basket, a water outlet moves to the position above a bottom plate, and washing water flows down through the water outlet; and after washing is completed, the third motor is continuously driven to rotate, the sealing plate continues to move upwards through the third motor until the second sealing ring makes contact with the bottom plate, the discharging port moves to the position above the bottom plate, HAu (GSH) 2 is discharged through the discharging port, and the rapid discharging function is achieved.

An austenitic stainless alloy welded joint which includes a weld metal excellent in weld hot cracking resistance, polythionic acid SCC resistance, naphthenic acid corrosion resistance, and age-toughness is provided. A weld metal (20) contains, in mass %, C: 0.020% or less, Si: 0.01 to 1.00%, Mn: 0.20 to 2.00%, P: 0.030% or less, S: 0.010% or less, Cr: 16.0 to 25.0%, Ni: 15.0 to 40.0%, Mo: 2.5 to 5.0%, Nb: 0.10 to 2.00%, N: 0.05 to 0.30%, sol. Al: 0.001 to 0.100%, and B: 0.0010 to 0.0050%, with F1 defined by Formula (1) being 2.30 or less, and F2 defined by Formula (2) being 2.5 or less.F⁢1=130⁢B+8⁢C+0.0⁢2⁢5⁢C⁢r+0.25 Mn+0.08 Mo+0.6 Nb+1⁢2⁢P+7.6⁢S+0.78Si+0.0⁢12⁢W(1)F⁢2=[ Mo]H / [ Mo]L(2)

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.

This application provides a gold leaching reagent system and its heap leaching process for treating low-grade gold ore, belonging to the field of hydrometallurgy. The gold leaching reagent system includes a main leaching agent, a catalytic leaching agent, and a stabilizer; wherein the main leaching agent is glycine, the catalytic leaching agent is anhydrous sodium thiosulfate, and the stabilizer is an organic ammonium salt. This application constructs a ternary stable and synergistic system of sodium thiosulfate-glycine-organic ammonium salt by introducing an organic ammonium salt with a specific structure. This optimizes the traditional thiosulfate gold leaching process from both thermodynamic and kinetic perspectives. The organic ammonium salt cations can dynamically adsorb around the thiosulfate ions in solution through intermolecular interactions, forming an effective shielding layer. This significantly inhibits the side reaction of sodium thiosulfate being oxidized and decomposed into sulfate and other ineffective products by dissolved oxygen, maintaining the long-term stability of the effective components in the leachate. This gold leaching reagent system has comprehensive advantages such as high leaching efficiency, good reagent stability, environmental friendliness, and low operating costs.

To provide a method for maintaining or increasing the content of rubisco protein in algal cells.SOLUTION: A method for producing a protein, comprising culturing an alga in a medium containing sulfate ions and / or thiosulfate ions under conditions that do not deplete the sulfate ions and / or thiosulfate ions, thereby maintaining or increasing the content of a rubisco protein in the algal body of the alga.SELECTED DRAWING: Figure 1

The purpose of the present invention is to improve a rubber composition comprising a rubber component and cellulose fibers, and to provide a method for producing such a rubber composition having good strength. Namely, the present invention provides a rubber composition comprising component A: a rubber component, component B: a cellulose-based filler, and component C: a water-soluble polymer, preferably a carboxyl methyl cellulose having a B-type viscosity of 20 mPas or more in a 1 mass% aqueous solution (25 DEG C, 30 rpm), or a salt thereof; it is preferable that the composition further comprises component D: a crosslinkable compound having a thiosulfuric acid group or an alpha, beta-unsaturated carbonyl group and an amino group. Also provided is a method for producing the rubber composition, which comprises a step for mixing and drying the components A to C, preferably the components A to D.

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 purpose of the present invention is to provide a method for maintaining or increasing the content of rubisco protein in an alga body. Provided is a method for producing a protein, which makes it possible to maintain or increase the content of rubisco protein in an alga body of an alga by adding sulfate ions and / or thiosulfate ions to a culture medium and culturing the alga under conditions where the sulfate ions and / or the thiosulfate ions are not depleted.

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 present disclosure relates to organosulfur compounds and compositions including the same. In particular, the present disclosure relates to bis (4-fluorophenyl) disulfides, bis (4-chlorophenyl) disulfides, bis (4-chlorophenyl) thiosulfides, bis (4-chlorophenyl) thiosulfides, bis (4-fluorophenyl) thiosulfides, bis (4-chlorophenyl) thiosulfides, bis (4-chlorophenyl) thiosulfates, bis (4-fluorophenyl) thiosulfates, and diisopropyl thiosulfates. Such compositions are useful for the treatment of microbial infections, in particular bacterial, fungal, protozoal or algal infections. Compositions comprising the compounds may also be used for cleaning, disinfecting or agricultural use.

Composition comprising a thiopyridinone compound and an amino-sulfonic compound The present invention relates to a composition, in particular cosmetic, comprising at least one compound of formula (I), at least one amino-sulfonic compound of formula (II) and strictly less than 0.2% by weight of an alkali salt of thiosulfuric acid and / or its solvates such as hydrates, or totally free from alkali salt of thiosulfuric acid and / or its solvates such as hydrates.

Disclosed in the present invention is a precious metal leaching method based on electrochemical oxidation and a thiosulfate salt, comprising: by using a thiosulfate salt-electrolyte-alkali liquor system as an electrolyte solution, adding a precious metal material into an anode chamber of an electrolytic cell, and connecting a cathode and an anode provided in the electrolytic cell to an external power supply, to leach a precious metal by electrochemical oxidation, wherein the electrolyte is a salt other than a thiosulfate salt. In the present invention, precious metals are extracted by an electrochemical thiosulfate salt method, the leaching effect is superior to that of existing copper-ammonia technology, and efficient and green extraction of precious metals (such as gold and silver) can be achieved; the present invention avoids the addition of large amounts of oxidants such as copper, and significantly reduces the consumption of thiosulfate while improving the leaching rate of precious metals, thereby reducing the cost of leaching agents, promoting green and sustainable development of the precious metal industry, and facilitating industrial application.

The application provides an extreme acidophilic sulfur-oxidizing bacterium and application thereof. The extreme acidophilic bacterium has strong oxidation on elemental sulfur and tetrathionate ions, is a chemolithoautotrophic acidithiobacillus, and can be used for removing elemental sulfur and tetrathionate ions in the environment, and has wide application prospects. The acidophilic sulfur-oxidizing bacterium has a preservation number of CGMCC No. 14839. The optimal growth temperature of the biological leaching and desulfurization provided by the application is normal temperature, and the optimal growth pH range is wide, so that the strain of the application has practical application significance. In addition, due to the characteristics of chemolithoautotrophy, the strain can improve the climate environment while recovering the environment.

The present invention is a sulfur compound measurement method for diagnosing a disease, the method comprising a measurement step for using a mass spectrometer to analyze a sample obtained from the exhaled breath of a subject, and measuring the amounts of a plurality of types of sulfur compounds contained in the sample, the measurements being used for diagnosing whether the subject is suffering from a prescribed disease. The plurality of types of sulfur compounds include two or more types of sulfur compounds selected from among ten types of sulfur compounds, namely hydrogen sulfide, hydrogen disulfide, hydrogen trisulfide, hydrogen tetrasulfide, cysteine, cysteine persulfide, glutathione, glutathione persulfide, sulfurous acid, and thiosulfuric acid.

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 multicolor fluorescent sulfur quantum dot as well as a preparation method and application thereof, and relates to the field of fluorescent quantum dots. The method comprises the following steps: mixing sodium thiosulfate, hexadecyl trimethyl ammonium bromide and sulfydryl-containing amino acid or a derivative thereof in water, and reacting the mixture in a continuous heating and stirring state; and filtering and dialyzing the obtained product to obtain pure fluorescent sulfur quantum dots. According to the method, the yellow fluorescent sulfur quantum dots are prepared for the first time, the yellow fluorescent sulfur quantum dots are also SQDs with the longest emission wavelength at present, and due to the fact that long-wavelength fluorescence has higher tissue penetrating power, the sulfur quantum dots can be better applied to tissue imaging. According to the method, sulfur powder and sodium hydroxide used as raw materials in a previous method are abandoned for the first time, sodium thiosulfate and amino acid are used as substitutes in a breakthrough mode, pure green synthesis of the quantum dots is successfully achieved, the safety and stability of the synthesis process are guaranteed, and a solid foundation is laid for industrial production of the sulfur quantum dots.

To provide a method for excellently separating and recovering iridium from a hydrochloric acid solution containing iridium, sulfur and at least one of copper, antimony, lead and arsenic.SOLUTION: A recovery method of iridium includes performing the following treatment steps (1)-(3) in this order on a hydrochloric acid solution containing iridium, sulfur and at least one of copper, antimony, lead and arsenic: (1) a precipitate recovery step of precipitating and recovering iridium by heating the hydrochloric acid solution to 40°C or more, and adding thiosulfate salt or a thiosulfate ion-containing solution; (2) a step of charging the precipitate recovered in step (1) into a sulfuric acid or hydrochloric acid solution of 0.5 N or more so as to dissolve and separate metal components; and (3) charging the precipitate from which metal components are separated in step (2) into an alkali solution containing sulfurous acids followed by heating to 20°C or more so as to dissolve and separate sulfur.SELECTED DRAWING: Figure 1

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.

The invention discloses an online reactivation system and method for a self-cleaning active alkali desulfurization process. In order to solve the problem that the alkali liquor is inactivated due to the fact that the solubility of sodium mercaptide is reduced due to accumulation of thermostable salt, the inactivated alkali liquor is led out by adopting skid-mounted equipment; sequentially performing activated carbon adsorption to remove organic sulfur substances, sand filtration to intercept suspended solids, cooling to separate out salt, cold filtration to remove inorganic salt crystals, anion resin exchange to deeply remove thermally stable salts such as sulfate radicals and thiosulfate radicals, alkali supplementation and blending to recover effective components, and finally returning to a main system. The method realizes on-line regeneration of the main device without shutdown, the desulfurization performance of the reactivated alkali liquor is effectively recovered, the removal rate of thermostable salt is high, the service life of the alkali liquor is remarkably prolonged, and the discharge of waste liquid is reduced.

The invention discloses a concentration detection system and a concentration detection method for PCB chemical reagent preparation. The system comprises a multiband spectrum emission unit; a dynamic environment noise elimination unit; a dual-optical-path reference detection unit; a new material feature analysis module; according to the invention, through a three-level innovative architecture of characteristic spectrum dynamic capture, environmental noise collaborative suppression and intelligent algorithm decision closed loop, technical faults of a traditional method in new material adaptability and complex working condition stability are systematically solved. On one hand, novel environment-friendly reagents such as a gold thiosulfate complex and a benzotriazole derivative realize full-fingerprint concentration inversion, and a detection blind area is reduced by 80%; and on the other hand, the submicron detection precision is still maintained in a high-temperature and high-pollution harsh production line environment. And finally, the PCB chemical reagent detection is promoted to be upgraded from a single-point calibration-manual correction extensive mode to a multi-dimensional perception-autonomous evolution intelligent system, and a concentration reference guarantee is provided for high-end electronic manufacturing such as an IC (Integrated Circuit) carrier plate and a Mini LED (Light Emitting Diode).

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).