55 results about "Sulphide compound" patented technology

The invention provides a silicon-based material and a preparation method thereof, a negative pole piece and a solid-state battery. The silicon-based material comprises an inner core and a surface coating layer, the inner core comprises a silicon-based negative electrode material, the surface coating layer is a carbon fluoride layer, the carbon fluoride layer internally comprises Li-M, LiF and LiX, M represents a metal element and is selected from at least one of Ag, Mg, Zn and Al, and X represents a non-metal element and is selected from at least one of N, S and P. The silicon-based negative electrode material is used as a core, the surface of the silicon-based negative electrode material is coated with the carbon fluoride layer, and the Li-M alloy / LiF / LiX composite lithium compound is introduced into the carbon fluoride layer, so that triple effects of ion-electron double-conduction network construction, interface chemical stabilization and mechanical buffer enhancement are achieved; and the chemical stability of an interface between the silicon negative electrode and sulfide solid electrolyte is improved while the rate capability of the negative electrode is improved and the expansion and shrinkage of the silicon negative electrode are relieved, and the cycling stability is improved.

The invention discloses a modified inorganic solid electrolyte filler as well as a preparation method and application thereof. Belongs to the technical field of solid-state lithium metal batteries. The modified inorganic solid-state electrolyte filler comprises inorganic solid-state electrolyte powder and an organic-inorganic hybrid grafting layer grafted on the surface of the powder, the inorganic solid electrolyte powder is one or more of oxide, sulfide and halide; and the organic-inorganic hybrid grafting layer is formed by bonding maleimide-polyethylene glycol-silane (Mal-PEG-silane) with the surface of the filler and then covalently copolymerizing the bonded maleimide-polyethylene glycol-silane and the surface of the filler with polyethylene glycol diacrylate (PEGDA). According to the modified inorganic solid electrolyte filler disclosed by the invention, a stable organic-inorganic hybrid structure is constructed through surface grafting and copolymerization, so that the dispersity of the filler in a polymer matrix can be remarkably enhanced, and the organic-inorganic interface compatibility and stability are improved; therefore, the ionic conductivity, the mechanical strength and the electrochemical cycle performance of the composite solid electrolyte are improved.

The present invention provides a volatile sulfur compound reducer, a reducer liquid, and a method for reducing volatile sulfur compounds, with which it is possible to reduce volatile sulfur compounds. This volatile sulfur compound reducer is characterized by containing: at least one first compound selected from the group consisting of copper sulfate and copper gluconate; and at least one second compound selected from the group consisting of sulfates other than copper sulfate, gluconates other than copper gluconate, and citrates. The volatile sulfur compound reducer therefore has an exceptional effect for reducing volatile sulfur compounds.

The invention relates to a process for preparing 1,2′-benzisothiazoline-3-one according to formula (I), comprising the following steps: (a) reacting a 2-halogenbenzonitrile compound of general formula (II) with a reaction mixture, containing: (i) alkaline sulphide and / or alkaline hydrogen sulphide and (ii) an alkyl halide compound, represented by general formula (III): R1X (III) for producing an intermediate product of general formula (IV), and (b) reacting the intermediate product of general formula (V) obtained in step (a) with a halogenating agent or an oxidant and subsequent reaction of the 2-(alkylsulfoxy)benzonitrile with an acid to form 1,2-benzisothiazoline-3-one as well as a halide compound of general formula (V) R1X (V).

This invention belongs to the field of organic synthesis and discloses a method for preparing α-difluoroselenomethyl ketone derivatives using electrochemistry. The method involves preparing α-difluoroselenomethyl ketone derivatives under electrochemical conditions using 2,2-difluorovinyl alcohol trimethylsilyl ether compounds and dialkyl diselenoether. Specifically, the 2,2-difluorovinyl alcohol trimethylsilyl ether compound and the dialkyl diselenoether compound are dissolved in an organic solvent, mixed thoroughly, an electrolyte is added, an inert electrode is inserted, and the reaction is carried out under electrostatic stirring at room temperature to obtain the product α-difluoro(selenomethyl) ketone derivative. This invention eliminates the need for catalysts, bases, persulfates, persulfates, or iodobenzene acetates considered necessary in the prior art; it only requires electrolysis to obtain α-difluoroselenomethyl ketone derivatives in a mild and efficient manner.

The Present invention relates to a gas diffusion electrode (GDE), preferably oxygen-depolarized cathode (ODC), comprising an inert conductive substrate and a catalytic coating, wherein the catalytic coating comprises ruthenium-rhodium sulphides, wherein rhodium sulphide content is comprised between 30% and 70% by weight referred to metals with respect to the total weight of said ruthenium-rhodium sulphides, wherein ruthenium sulphide content is comprised between 30% and 70% by weight referred to metals with respect to the total weight of said ruthenium-rhodium sulphides. The present invention also relates to the use of the aforementioned oxygen-depolarized cathode (ODC) in a hydrochloric acid electrolysis cell (HCl-ODC).

The present invention relates to a novel organic material field. The episulfide compound having a sulfoxide structure can effectively improve the alkali corrosion resistance of optical material substrates due to the presence of polar groups, thereby increasing the yield of substrates and reducing production costs.

The invention discloses a metal-doped aluminum oxide supported alkaline catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an alkaline component supported on the carrier, the carrier contains Al2O3 (aluminum oxide), AgxOy (silver oxide) and RemOn (iron oxide); agxOy is selected from one or more of elemental Ag and Ag oxide; remOn is selected from one or more of elemental Re and Re oxides; the alkaline component is selected from one or more of alkali metal, alkaline earth metal and organic alkaline compounds. According to the present invention, the catalyst carrier contains Al2O3, AgxOy and RemOn, and through the synergistic effect of the AgxOy and the RemOn in different forms, the loaded alkaline component and the optional modification component, the performance of the catalyst is significantly improved, such that the catalyst has the good catalytic performance, can achieve the adsorption removal and refining of different organic sulfur and inorganic sulfide under the low temperature condition, and has the good industrial application prospect. In addition, the catalyst can be regenerated repeatedly, and the preparation method of the catalyst is simple and easy to implement and convenient for industrial production.

The present invention is characterized by being a novel sulforaphane derivative comprising a complex of sulforaphane (1-isothiocyanato-4-[methylsulfinyl]butane (SFN)) and cysteine persulfide (CysSnH, n=2, 3, 4, or 5) or glutathione persulfide (GSnH or GSnG, n=2, 3, 4, or 5).

The present invention discloses a purely chemical, non-electrical process for preparing high- purity metallic silver from radiographic clinic fixer waste and photographic processing solutions. The process comprises alkaline precipitation and sulphide conversion of dissolved silver to form an insoluble silver-containing sludge, chemical purification of the sludge using nitric acid to remove non-silver impurities, and thermal fusion of the purified silver using borax as a flux. The method operates without electrical energy or electro-chemical systems and produces metallic silver with a purity exceeding 99.9%, while reducing environmental pollution associated with untreated silver-bearing waste..

The invention relates to the technical field of packaging materials, and discloses a packaging carton coating material capable of absorbing sulfides, the coating material is composed of an active absorption component, a functional adhesive matrix, a functional auxiliary agent and water; wherein the active absorption component is a compound of nanoscale zinc oxide and bismuth subcarbonate; the functional adhesive matrix is a combination of polyvinyl alcohol and sodium carboxymethyl cellulose with specific parameters, and the preparation method comprises the following steps: accurately controlling the pH value to be alkalescent when the active slurry is prepared, and then mixing the active slurry with the functional glue solution. Through the synergistic effect of the active components and a reaction microenvironment constructed by the functional adhesive, the sulfide absorption efficiency is remarkably improved; a porous network structure is formed by optimizing the component proportion, so that the high utilization rate of active sites is ensured; the preparation process inhibits agglomeration of nanoparticles, and ensures uniformity and stability of the performance of the final product.

The application provides a sulfate-reducing bacteria culture medium and application thereof, and components of the culture medium include: a carbon source, a nitrogen source, a phosphorus source, calcium chloride, magnesium chloride, an inorganic sulfur source, an organic sulfur compound with reducibility, inorganic trace elements, agar and water; wherein the mass content of the organic sulfur compound with reducibility is 5-30 mg / L, the mass content of the inorganic trace elements is 152-365 mg / L; the organic sulfur compound with reducibility includes lipoic acid and / or thiamine hydrochloride; and the inorganic trace elements include a combination of zinc elements, manganese elements, molybdenum elements and boron elements. The application introduces inorganic trace elements required by biological cell metabolism and rich sulfur electron acceptor species, promotes the growth and metabolism process of sulfate-reducing bacteria, and enables SRB cells to form visible colonies at a faster speed.

The application discloses a catalyst preparation method for producing rubber oil from medium-low temperature coal tar pitch, and comprises the following steps: 1, adding active metal precursor, alumina precursor, molecular sieve and agate ball into a ball mill jar according to a stoichiometric ratio, and ball milling for 1 hour to obtain a viscous mixture; 2, drying the viscous mixture obtained in the step 1 in an oven at 110 DEG C for 6 hours, and then calcining at 550 DEG C for 4 hours to obtain an oxidized catalyst; 3, immersing the oxidized catalyst obtained in the step 2 in a sulfuration agent for 12 hours, and then drying at 90 DEG C for 3 hours to obtain a presulfurized product; and activating the presulfurized product obtained in the step 3 in an autoclave to obtain the catalyst for producing rubber oil from medium-low temperature coal tar pitch. According to the method, the carrier compounding and active metal loading are completed through one-time feeding, and no pre-sulfur waste liquid is generated. The catalyst has high activity, controllable pore and adjustable acidity, and has a good application prospect in the hydrogenation of medium-low temperature coal pitch.

This invention discloses a method for preparing and applying a β-cyclodextrin-based supramolecular polyurethane protective coating. The method comprises the following steps: dissolving triacetyl-β-cyclodextrin and polycaprolactone diol in a solvent, heating and reacting, followed by precipitation, filtration, and washing in deionized water to obtain β-cyclodextrin-polycaprolactone diol with a rotaxane structure; mixing β-cyclodextrin-polycaprolactone diol and isophorone diisocyanate solvent to obtain a prepolymer; adding a fluorinated chain extender, 2-hydroxyethyl disulfide, and 1,4-butanediol to the prepolymer to obtain a supramolecular polyurethane emulsion, which is then coated onto a substrate surface and cured to obtain the protective coating. The coating of this invention maintains surface stability in complex and humid environments, ensures long-term integrity of the coating material through self-healing, and rapidly captures small molecules such as odors and toxic volatile organic compounds (VOCs).

A process for treating minerals containing metal sulphide and a precious metal, the process comprising fine grinding the minerals and subjecting the minerals to a first leaching step conducted under oxidising conditions at a pH of from 5 to 7, and subjecting a pulp or suspension or solid residue from the first leaching step to a second leaching step conducted under oxidising conditions at a pH of at least 9.0.

Disclosed is a catalyst suitable for the catalytic oxidative cracking of a H2S-containing gas stream. The catalyst comprises at least one or more active metals selected from the group consisting of iron, cobalt, and nickel, supported by a carrier comprising ceria and alumina. The active metal is preferably in the form of its sulphide. Also disclosed is a method for the production of hydrogen from a H2S-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form H2 and S2, using a catalyst in accordance with any one of the composition claims.

A process for preparing a compound of formula (NaOH)x[Fe(OH)2]yFeS, may include: (a) mixing iron and sodium sulfide in equimolar amounts, in an NaOH aqueous solution; (b) heating the obtained mixture up to a temperature in a range of from 110 to 210° C. for a duration in a range of from 1 hour to 1 week; and (c) recovering the active material by filtering and drying in a neutral atmosphere.

The present invention relates to an indeno-naphthopyran compound represented by the following formula (I). In reference to formula (I), m, n, and R4-R7 are as described in the specification. Further referring to formula (I), R1 is an aryl group substituted by at least one perfluoroalkyl group, or a heteroaryl group substituted by at least one perfluoroalkyl group; r2 is an alkoxy group; and R3 is an alkoxy group, an amino group, or a substituted or unsubstituted nitrogen-containing heterocyclic ring, with the proviso that when R3 is not an alkoxy group, R3 is covalently bonded to position-7 via a nitrogen atom. The present invention also relates to a photochromic composition and a photochromic article comprising the indeno-naphthopyran compound represented by formula (I). (I)

The invention relates to a method for the industrial production of an alkaline earth metal compound which is not an alkaline earth metal sulphate, at least comprising the following steps: S1) (i) producing or providing an alkaline earth metal sulphate and separately (ii) producing or providing a reduction gas; S2) reducing the alkaline earth metal sulphate produced or provided in step S1) by means of the reduction gas such that a corresponding alkaline earth metal sulphide results.

To provide a deodorant which can effectively deodorize malodors of a fatty acid compound type, an amine compound type, a sulfur compound type and a neutral compound type in a well-balanced state, uses anions existing in nature, does not contain sulfate ions and chloride ions, can contribute to environmental preservation, is water-soluble, is safe in spite of repetitive use and makes end consumers feel safe.SOLUTION: The deodorant contains at least one zinc citrate complex selected from zinc monohydrogen citrate and zinc dihydrogen citrate.SELECTED DRAWING: None

The present invention provides, with high production efficiency, an oxysulfide solid electrolyte containing a lithium atom, a phosphorus atom, a sulfur atom, and an oxygen atom. The present invention provides: a method for producing an oxysulfide solid electrolyte, the method including mixing a raw material-containing substance containing a lithium atom, a sulfur atom, a phosphorus atom, and an oxygen atom with a complexing agent containing a compound having at least one atom selected from a nitrogen atom and an oxygen atom; an oxysulfide solid electrolyte precursor configured from a lithium atom, a sulfur atom, a phosphorus atom, and an oxygen atom, and a complexing agent containing a compound having at least one atom selected from a nitrogen atom and an oxygen atom; and an oxysulfide solid electrolyte.

The booster additive concentrate can advantageously contain: (a) an antiwear mixture of two or more phosphite / phosphate compounds and one or more ether / sulphide compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) >2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil base stock. The booster additive concentrate can exhibit a specific content of B / Ca / P based on these additive components, and can contain minimal or substantially no additional antioxidants. A lubricant composition can be made from the booster additive concentrate and a fresh / used lubricating oil composition "diluent", which can rejuvenate the diluent. Such a lubricant composition can have advantageous anti-shudder durability (ASD) life and other friction properties. In particular, when used in a vehicle having a continuously variable transmission (CVT), such a concentrate / composition is able to provide excellent lubrication.

An episulfide compound and an optical material composition thereof are provided. The episulfide compound possesses a sulfoxide structure, and the presence of the polar group can effectively improve the alkali corrosion resistance of optical material substrates and reduce the rate of substrate burn, thereby improving substrate yield and reducing production costs.

The invention discloses an F-CoSe2 nanoflower material with a high specific surface area and a preparation method of the F-CoSe2 nanoflower material. The method comprises the following steps: mixing polyimide powder, cobalt nitrate and polyvinylpyrrolidone, performing ultrasonic treatment, evaporation and grinding, and sintering in a nitrogen atmosphere to prepare a C / Co / CoO composite material; calcining the composite material and selenium powder in argon-hydrogen mixed gas to obtain a CoSe2 / C material; finally, the material and ammonium fluoride are subjected to a fluorination reaction in the argon atmosphere, and the CoSe2 nanoflower material is prepared. The invention also relates to the material prepared by the method. The F-CoSe2 nanoflower material has a flower-like structure assembled by nanosheets, has high specific surface area and abundant pores, optimizes the electronic structure of the material through F doping, exposes more active sites, has strong physical adsorption and efficient chemical catalytic conversion capabilities on polysulfide in a lithium-sulfur battery, can significantly inhibit a shuttle effect, and has a good application prospect in the field of lithium-sulfur batteries. The battery performance is improved.

A functionalised medium molecular weight heparin includes a linker and a functional group. The functional group may be a polar functional group, an apolar functional group, an acidic functional group, or a basic functional group. The functional group may be an aryl, a phenyl, a heteroaryl, an alkyl, a cycloalkyl, an alkenyl, an alkynyl, an alcohol, a thiol, an ether, a sulphide, an amine, a carboxylic acid, and / or a fluoroalkyl. The linker may be an oxime linker or an amine linker.

A system comprising a chlorination reactor with three reaction zones and methods using the reactor for the extraction and separation of iron, sulphur, copper and manganese from a feed material containing sulphides of iron, nickel, cobalt, copper, silver, gold and platinum group metals (PGM) and further for separation of these metals in the form of volatile chloride complexes from nickel, cobalt, silver, gold and platinum group metals. In the method, sulphur and iron are converted to volatile chlorides by the treatment of the feed material with gaseous chlorine at elevated temperature and pressure and extracted. Metal chlorides of manganese and copper are reacted in situ with ferric chloride vapours to form volatile complexes. These volatile complexes are removed from the reactor together with disulphur dichloride and ferric chloride and are separated by distillation and fractional desublimation. Disulphur dichloride is recycled to the reactor and removed as sulphur.

Non-acidic sulfur compounds can be extracted from a gas stream by contacting the gas stream with a carbonate solvent that contains at least one organic carbonate in an amount that is effective to solvate at least a portion of the non-acidic sulfur compounds. The gas steam can then be separated from the carbonate solvent that contains the non-acidic sulfur compounds. The carbonate solvent may optionally include a co-solvent and / or a mercaptan scavenger.

The application relates to the technical field of batteries, and discloses a three-layer composite diaphragm and a preparation method thereof. The three-layer composite diaphragm comprises three layers which are sequentially compounded from inside to outside, namely a polyimide base layer, a thermal response layer and an ion sieving functional layer. The thermal response layer of the application takes nano silicon dioxide as a rigid skeleton, and a temperature-sensitive polymer poly (N-isopropyl acrylamide) is grafted on the surface to form a core-shell structure. The porosity is high at low temperature, and the ion conductivity is high. With the increase of temperature, PNIPAM shrinks due to dehydration, the pores are quickly closed, ion transmission is blocked to prevent thermal runaway. In addition, the polyimide base layer provides excellent mechanical tensile strength, the ion sieving layer inhibits polysulfide shuttling and adsorbs HF in the electrolyte, and the three layers jointly act to prolong the service life of the battery and improve the safety.