137 results about "Oxalate salt" patented technology

Method for preparing a catalyst composition comprising indium bismuth alloy which method comprises (a) combining at least an indium containing salt, a bismuth containing salt and an oxalate salt in a liquid to obtain a precursor mixture; (b) combining the precursor mixture with a reducing agent to obtain a suspension comprising the catalyst composition; and (c) separating the catalyst composition from the suspension, wherein a support material is either added to the precursor mixture or to the reducing agent, and to catalyst composition comprising indium bismuth alloy obtainable by this method.

The present invention discloses an accordion-shaped lignin cubic carbon material, a preparation thereof, and an application thereof in a supercapacitor. The preparation method comprises the following steps: firstly, dissolving industrial lignin in an alkali solution and purifying in a weak acid solution; then forming, with a block copolymer, a mixed micelle of the lignin / the block copolymer in a mixed solvent of alcohol and water, then sequentially adding a soluble zinc salt and a soluble oxalate, and carrying out solvent evaporating induction under a neutral condition to co-deposit the mixed micelle and zinc oxalate, with an evaporation rate at the same time, to deposit the mixed micelle of lignin / block copolymer between zinc oxalate layers, to construct a cubic lignin / block copolymer / zinc oxalate complex with ordered structure; and after finally carbonizing, obtaining an accordion-shaped lignin cubic carbon material. This material has a rich ion migration space and is internally provided with interconnected supporting nanosheet layers so that the problem that carbon nanosheets are easy to accumulate is solved, the effective surface utilization rate is improved, and performances of the mass, the area-specific capacitance and the rate capability of a supercapacitor are remarkably improved.

Captured carbon dioxide, preferably carbon dioxide captured from emissions such as carbon dioxide from flue gas emissions, can be provided in the form of purified carbon dioxide after undergoing one or more purification processes, such that the purified carbon dioxide is capable of being utilized in the formation of one or more other economically viable chemicals, such as an oxalate salt and / or oxalic acid via an electrochemical reduction process. The electrochemical reduction process utilizing a modified cathode having a metal coating for the efficient and high yield of oxalate salt and / or oxalic acid. The economically viable chemicals derived from captured carbon dioxide capable of being utilized in other applications including the treatment of waste-products, such as in the neutralization of red mud and / or the extraction of rare earth minerals from neutralized red mud.

The invention belongs to the technical field of medicine crystals, and relates to cordycepin-oxalate as well as a preparation method and application thereof. The invention relates to a preparation method of cordycepin-oxalate. The preparation method comprises the following steps: (1) physical mixing: sufficiently and uniformly mixing oxalic acid and cordycepin-crystal form II crystals; (2) liquid auxiliary grinding: adding an auxiliary agent, and continuously grinding to obtain a solid mixture; and (3) drying the solid mixture to obtain the cordycepin-oxalate. According to the method, the cordycepin-oxalic acid eutectic salt is prepared for the first time, the dissolution rate of the cordycepin-oxalic acid eutectic salt is obviously lower than the dissolution rate of cordycepin reported in the prior art, and the cordycepin-oxalic acid eutectic salt has extremely high potential medicinal application value. The cordycepin-oxalic acid eutectic salt has important technical innovation and market application potential due to the slow release effect.

The invention discloses a lithium-rich manganese-based solid-state battery positive electrode active material and a preparation method and application thereof, and the preparation method comprises the following steps: S1, taking a manganese salt, a cobalt salt and a nickel salt, and preparing a mixed salt solution; s2, adding an oxalic acid solution into the mixed salt solution, and stirring to form an oxalate precipitate; s3, carrying out vacuum drying and collecting precipitates to obtain an oxalic acid precursor; s4, mixing and uniformly grinding the oxalic acid precursor, LiOH and Li2WO4 to obtain mixed powder; and S5, pre-sintering the mixed powder, then calcining, and naturally cooling to room temperature to obtain the composite material. The invention also discloses the lithium-rich manganese-based solid-state battery positive electrode active material prepared by the preparation method, and a battery positive electrode and a solid-state battery comprising the active material. Li2WO4 is introduced into the lithium-rich manganese-based solid-state battery positive electrode material to construct a Li < + > / e <-> transmission channel, so that the initial specific capacity of the battery is increased; and a protective layer is formed on the surface of the positive electrode material to enhance the redox reversibility and improve the cycle stability of the battery.

The invention relates to the technical field of hazardous waste treatment, in particular to a method for extracting rare earth elements from gasification furnace slag and preparing foam microcrystalline glass from the gasification furnace slag and fly ash. The method comprises the following steps: mixing the gasification furnace slag with small molecular organic acid, uniformly stirring, and controlling the pH value to be 3-5; filtering, and respectively collecting solid residues and leachate; adding oxalate into the leachate in batches to separate rare earth elements, and filtering to obtain the rare earth elements and waste liquid; the method comprises the following steps: mixing organic incineration fly ash and solid residues, grinding, heating in a corundum crucible, and preserving heat to obtain a basic glass melt; carrying out water quenching or room temperature cooling on the basic glass melt to obtain glass slag, and drying to constant weight; glass slag is added into the waste liquid, a certain amount of calcium carbonate is added for mixing, injection molding and curing are conducted, and then demolding is conducted to obtain a foaming blank; and drying and sintering the foamed blank to obtain the foam microcrystalline glass. According to the method, hazardous waste materials are completely utilized, the preparation process is simple, and the waste utilization rate is high.

The invention discloses a method and device for continuously preparing lithium difluoro (oxalato) borate and a lithium difluoro (oxalato) borate solution, and belongs to the technical field of electrolyte salt synthesis, the method comprises the following steps: continuously pumping chlorosilane and a first mixed solution formed by oxalate and an ester solvent into a first dynamic microchannel reactor, and carrying out a first reaction to obtain a reaction product, wherein the mass flow ratio of the first mixed solution to the chlorosilane is (4-10): 1; continuously pumping the reaction product into a second dynamic micro-channel reactor, continuously pumping a second mixed solution formed by lithium tetrafluoroborate and an ester solvent into the second dynamic micro-channel reactor, and carrying out a second reaction at a temperature of 20-70 DEG C and a rotating speed of 200-400 r / min to obtain a mixed reaction solution; and separating a reaction product in the mixed reaction liquid to obtain the lithium bis (fluoro) oxalato borate. According to the method for continuously preparing the lithium difluoro (oxalato) borate, the continuous production of the lithium difluoro (oxalato) borate can be realized, and the quality of the lithium difluoro (oxalato) borate is high.

The invention discloses a method for recycling retired lithium iron phosphate batteries and producing iron phosphate. The method comprises the following steps: adding alkali into a mixed solution containing Fe < 3 + >, Li < + > and PO4 < 3-> obtained after acid leaching to adjust the pH value, separating out an iron phosphate solid, reacting iron phosphate with acid and a reducing agent, and then reacting with oxalate, so that the iron element is mainly recovered in the form of ferrous iron; reacting the lithium salt solution by a method of adding an alkaline carbonate solution or introducing carbon dioxide gas to generate lithium carbonate precipitate, and recovering lithium carbonate; the recycled ferrous chloride can be used for preparing a ferric iron solution, and the ferric iron solution is directly used for producing iron phosphate, so that the iron element is regenerated and reused in the lithium iron phosphate.

A quinazoline derivative (represented by the formula (I)) salt's crystal form, a preparation method and application are provided; specifically, the hydrochloride crystal form A, B, C, D, F, H, I, Sulphate crystal form A, Maleate crystal form A, Succinate crystal form A, Adipate crystal form A, Glycolate crystal form A, Malate crystal form A, Fumarate Salt crystal form A, besylate crystal form A, B, C, benzoate crystal form A, hippurate crystal form A and oxalate crystal form A of the quinazoline derivative represented by formula (I). The salt crystal form provided by the present invention has good stability, which can be used in the treatment of non-small cell lung cancer brain metastasis, meningeal metastasis, primary brain cancer or glioma, etc., and has good bioavailability, which is of great significance for further research on the efficacy of such solid drugs.

The present invention belongs to the technical field of sewage treatment, and discloses a long-acting slow-release sludge denitrifying flora regulating agent, a preparation method and an application thereof. The preparation method includes: uniformly mixing dolomite powder, hydroxylamine-O-sulfonic acid powder and ethylhydrazine oxalate powder to obtain a composite powder; mixing hydroxypropyl cellulose with an ethanol aqueous solution to obtain a sizing agent; mixing the composite powder and the sizing agent and preparing the long-acting slow-release sludge denitrifying flora regulating agent through a granulation technique. The agent of the present invention can be applied in the process of treating nitrogen-containing wastewater, and can quickly regulate the flora structure to realize the start-up and performance optimization of the nitrite-based sewage denitrification process.

A preparation method of N '-((2S, 3S)-2-(benzyloxy) pent-3-yl) formylhydrazine oxalate enzyme belongs to the field of medical intermediates, and comprises the following steps: step 1, preparing a buffer solution of a compound enzyme preparation; step 2, adding (2S)-2-benzyloxy-3-pentanone into a solvent A, and then adding a buffer solution of the compound enzyme preparation for reaction; 3, filtering, and carrying out an activation reaction on the filtrate; 4, filtering, removing the solvent, adding the obtained solid into a solvent B, and then adding formylhydrazine for reaction; 5, filtering, removing the solvent, adding the obtained solid into a solvent C, and then adding oxalic acid for reaction; and 6, drying the solid obtained by filtering to obtain the N '-((2S, 3S)-2-(benzyloxy) pent-3-yl) formylhydrazine oxalate. According to the method, the yield of the N '-((2S, 3S)-2-(benzyloxy) pent-3-yl) formylhydrazine oxalate can be increased, and the production cost is effectively reduced.

The invention relates to the field of hydrometallurgy, and discloses a method for converting hafnium oxalate feed liquid into hafnium sulfate feed liquid, which comprises the following steps: adding a sulfuric acid solution and an oxidizing agent into the hafnium oxalate feed liquid, and reacting at a certain temperature to obtain the hafnium sulfate feed liquid. Oxidants used in the method are preferably hydrogen peroxide and ozone, other impurity ions are not introduced, and the purity of the product is not influenced at all. Oxidation products are H2O and CO2 and are basically free of pollution to the environment. The process of evaporation, filtration, calcination, redissolution and the like of a traditional evaporation method and an alkali precipitation-redissolution method is not needed, the operation is simple, the efficiency is high, the cost is low, and the operability is high. The method for adding the sulfuric acid solution and the oxidizing agent into the oxalate feed liquid is also suitable for converting oxalate solutions of other metal ions into sulfate solutions, including but not limited to zirconium oxalate, titanium oxalate, thorium oxalate, scandium oxalate, niobium oxalate, tantalum oxalate, vanadium oxalate, cobalt oxalate, cesium oxalate and rubidium oxalate.

The present invention discloses a Prussian blue-based sodium-ion battery positive electrode material, a preparation method, and applications thereof. The method comprises: mixing sodium ferrocyanide, oxalate, and a non-aqueous solvent, subjecting the mixture to a ball-milling reaction, and washing the product after the ball-milling reaction to remove unreacted raw materials and a portion of sodium oxalate generated by the reaction, thereby obtaining the Prussian blue-based sodium-ion battery positive electrode material. The present invention can synthesize Prussian blue-based compounds with low defects and low interstitial water molecule content, thereby improving the sodium storage performance and capacity utilization of such materials; it also reduces the probability of side reactions in the electrolyte causing cell bloating. In addition, the use of oxalate-based raw materials can also generate a sodium oxalate-based positive electrode sodium supplement during the synthesis of the Prussian blue-based compound, thereby replenishing sodium ion loss caused by SEI film formation or other side reactions during the initial charge.

The invention provides a spherical nickel oxide material and a preparation method thereof. The preparation method comprises the following steps: S1, carrying out first mixing on raw materials including a nickel salt solution and an alkali solution to obtain a first mixed solution; s2, performing second mixing on raw materials including the first mixed solution, a surfactant and a dispersing agent to obtain a second mixed solution; s3, sequentially carrying out third mixing and aging reaction on raw materials comprising the second mixed solution and an oxalate solution to obtain a third mixed solution; and S4, sequentially centrifuging, washing, drying and roasting the third mixed solution to obtain the spherical nickel oxide material, wherein the pH value of the first mixed solution is 5.0-6.8; the roasting temperature is 300 to 550 DEG C; according to the preparation method, the needle-shaped spherical nickel oxide material with uniform particle size can be obtained, so that the surface activity and the specific surface energy of the nickel oxide material are enhanced, and the nickel oxide material can be better applied to the fields of gas sensitive materials and the like.

The invention discloses an additive for a secondary battery, a non-aqueous electrolyte for the secondary battery and the secondary battery, the electrolyte comprises a main salt, a non-aqueous solvent and an additive, the main salt is selected from a main lithium salt or a main sodium salt, the additive at least comprises a diester compound shown as a structural formula (I), and can also comprise boron-containing oxalate and a basic additive, the specific structure is shown in the specification. By adding the diester compound into the electrolyte, the initial impedance of the battery can be effectively reduced, the low-temperature discharge performance is improved, and meanwhile, the high-temperature storage and high-temperature circulation of the battery are improved.

A battery circulating lithium ions includes a positive electrode including an electroactive material including an oxide containing lithium and manganese, and an electrolyte permeating the positive electrode. The electrolyte includes an organic solvent, a lithium salt in the organic solvent, and an oxalate-based additive in the organic solvent. The oxalate-based additive includes at least one oxalate compound selected from the group consisting of bis (2, 2, 2-trifluoroethyl) oxalate, tert-butyl 2, 2, 2-trifluoroethyl oxalate, methyl 2, 2, 2-trifluoroethyl oxalate, ethyl 2, 2, 2-trifluoroethyl oxalate, bis (2-chloroethyl) oxalate, and diethyl oxalate.

The application provides a kind of alkali leaching recovery method of waste oxide battery positive material, comprising: with the mixed aqueous solution of glycine, alkali and oxalate as the alkali leaching bottom solution, adding waste oxide battery positive material, soluble ferrous salt into the alkali leaching bottom solution, and carrying out leaching reaction. The method can realize the reduction of high-valence metal in oxide waste lithium ion battery positive material by using the reducing property of ferrous ion, can effectively improve the leaching efficiency of valuable metal, shorten the time of alkali leaching, and obtain higher metal leaching rate. And the leaching method can effectively avoid the entry of iron ion into liquid phase in the leaching process, causing a series of problems such as difficult separation of valuable metal in subsequent process, the reagent used is simple, the method condition is simple and easy to control, the energy consumption is low, the efficiency is high, and it has considerable industrial application prospect.

The present application relates to a kind of recycling method of avibactam intermediate production waste liquid, belong to pharmaceutical chemical technology field;The present application will be in the 5-benzyloxyamine piperidin-2S-formic acid ethyl ester oxalate in avibactam intermediate production waste liquid by desalination into free state, under the condition of ethyl acetate as solvent, using the dilute solution of m-chloroperbenzoic acid drop, homogeneous reaction in organic solvent, effectively improve the utilization of raw material, with the advantage of less by-product, and have higher recovery rate than prior art, in addition, the present application also prepares a kind of activated carbon loaded sodium triacetoxyborohydride, can play the role of catalytic sodium triacetoxyborohydride reduction amination reaction, improve the utilization of sodium triacetoxyborohydride, and prevent sodium triacetoxyborohydride from contacting with water.

A method of recovering iridium in a platinum group metal refining process by dissolving iridium from a solid iridium containing material into an aqueous solvent to produce an iridium containing solution, wherein the solution is acidic and / or is acidified by addition of an acid (e.g. HCl) after dissolution of the iridium; adding an aliphatic polyamine (e.g. diethylenetriamine or ethylenediamine) to the solution to precipitate the iridium as an iridium polyamine salt; and separating the precipitated iridium polyamine salt from the solution. A majority of the iridium is dissolved in its +3 oxidation state and remains in this state throughout the precipitation and separation steps. The sold iridium (e.g. an iridate or an iridium oxide) can be reduced from its +4 oxidation state when it dissolved using an oxalate or oxalic acid reducing agent. The solution comprises substantially no rhodium or ruthenium.

The invention relates to the technical field of medicines, and discloses a salt, a crystal form and a composition of an AXL kinase inhibitor as well as a preparation method and application of the salt, the crystal form and the composition of the AXL kinase inhibitor, and the salt is hydrochloride, sulfate, phosphate, mesylate, benzene sulfonate, p-toluenesulfonate, camphorsulfonate, maleate and oxalate. The crystalline form of the AXL kinase inhibitor salt is substantially pure. The basically pure AXL kinase inhibitor crystal form disclosed by the invention has good performance and high bioavailability; therefore, the compound can be used for preparing medicines for treating and / or preventing proliferative diseases, autoimmune diseases, allergic diseases, inflammatory diseases, transplant rejection, cancers, virus infectious diseases, heart failure, cardiovascular diseases or other diseases of mammals.

The invention provides an electrolyte and a secondary battery, the electrolyte comprises a lithium salt, a non-aqueous solvent, a first additive and a second additive, the first additive is selected from at least one of compounds represented by a formula I, and the second additive is selected from lithium oxalate. Through the arrangement, when the first additive and the second additive are matched to be used as the electrolyte additive, the formation of a stable solid electrolyte interface film on a negative electrode interface is facilitated, and meanwhile, the formation of a stable positive electrode electrolyte interface film on a positive electrode interface is also facilitated, so that the stability of the positive electrode and negative electrode interfaces is improved; the synergistic effect of the first additive and the second additive can reduce active lithium ions consumed in the film forming process of the first additive, reduce the amount of gas generated by decomposition of the second additive in a high-temperature environment, improve the high-temperature resistance of the secondary battery, and improve the first effect, capacity exertion and safety of the battery.

The application provides a rod-shaped nickel oxide material and a preparation method thereof. The preparation method comprises the following steps: S1, mixing raw materials including a nickel salt solution and an alkali solution to obtain a first mixture; S2, mixing raw materials including the first mixture and a surfactant to obtain a second mixture; S3, sequentially performing third mixing and aging reaction on raw materials including the second mixture and an oxalate solution to obtain a third mixture; and S4, sequentially performing suction filtration, washing, drying and calcination on the third mixture to obtain the rod-shaped nickel oxide material; wherein the pH value of the first mixture is 7.0-9.0; and the calcination temperature is 580-700 DEG C. The rod-shaped nickel oxide material prepared by the above method is mainly rod-shaped and has uniform particles, so that the specific surface energy and surface activity of the rod-shaped nickel oxide material are enhanced, and the application thereof is widened.

The invention provides a preparation method of a zinc-based metal organic framework material, which is carried out in a water phase at normal temperature and normal pressure, does not need to use organic solvents such as methanol, DMF (Dimethyl Formamide) and the like, is simple and convenient to operate, environment-friendly and low in cost, and is a green preparation method. The preparation method provided by the invention comprises the following steps: S1, adding alkali metal oxalate into a zinc salt aqueous solution, and stirring to obtain a white turbid liquid; the ratio of the amount of substance of oxalate in the alkali metal oxalate to the amount of substance of zinc ions in the zinc salt is (1-4): 1; s2, mixing a benzotriazole aqueous solution with the pH value of more than 8.5 with the white turbid liquid obtained in the step S1, and stirring to react; the molar ratio of the benzotriazole to zinc ions in the zinc salt is (3-10): 1; the pH value of the benzotriazole aqueous solution is adjusted to be greater than 8.5 by adding organic amine; and S3, separating the reaction feed liquid obtained in the step S2, and washing and drying a solid product obtained by separation to obtain the zinc-based metal organic framework material.

The present invention provides a chemical mechanical polishing liquid and its application, which includes abrasive particles, polishing accelerators, oxidants, surfactants, pH regulators and water; the polishing accelerators include inorganic salts of alkali metals and organic salts of alkali metals; the inorganic salts of alkali metals include one or more of carbonates of alkali metals, bicarbonates of alkali metals, nitrates of alkali metals and sulfates of alkali metals; the organic salts of alkali metals include one or more of oxalates of alkali metals, acetates of alkali metals, citrates of alkali metals, phthalates of alkali metals and diaminetetraacetates of alkali metals. The present invention realizes one-step forming of GaSb single crystal wafer polishing, has a simple process and good stability, shortens the original polishing time from more than 2 hours to about 15 minutes, and the surface of the GaSb single crystal wafer is smooth, without defects such as scratches, orange peel, and matte surface, and the roughness Ra can reach below 0.3 nm.

The invention relates to the technical field of ITO (indium tin oxide) conductive glass recycling, and discloses a method for leaching and separating indium and tin in ITO conductive glass powder, which comprises the following steps: mixing the ITO conductive glass powder with a leaching agent solution to obtain leaching ore pulp; wherein the leaching agent solution is prepared from oxalic acid, a reagent A, a reagent B and water; the reagent A is oxalate, and the reagent B is one of sodium sulfide, ammonium sulfide and TAA; stirring and leaching the leached ore pulp, and filtering and separating after the leaching reaction is finished, so as to obtain leached residues and leached liquid; carrying out hydrolysis indium precipitation reaction on the leachate, and filtering after the reaction is finished to obtain indium precipitation filtrate and indium slag; the method has the advantages of being good in leaching selectivity, high in indium leaching speed, high in leaching rate and low in energy consumption in the leaching process, and the indium leaching rate of the method is far higher than that of traditional oxalic acid leaching.

The present invention discloses a gliclazide oxalate, its crystal form, preparation method and application, relating to the technical field of pharmaceutical chemistry. The present invention provides a crystal form of gliclazide oxalate, which has not been reported in the prior art. Animal experiments show that, compared with gliclazide tartrate and gliclazide hydrochloride, the gliclazide oxalate prepared by the present invention has better pharmacokinetic properties, laying a foundation for the development and application of new dosage forms of gliclazide; the present invention also provides a simple and efficient salt-forming process for gliclazide. Compared with the method of removing the amino protecting group by acid treatment, the salt-forming process provided by the present invention does not need to add alkali to free the amino group, avoiding the generation of impurities caused by strong acids or strong bases, and the prepared gliclazide oxalate has high purity.

The present application relates to a kind of preparation methods of pressurized water reactor MOX fuel powder, comprising the following steps: by mixed actinide salt and urea solid preparation mixed actinide eutectic, mixed actinide eutectic is directly obtained by deamination, denitrogenation / decarbonation, reduction, MOX fuel powder;The mixed actinide salt is hexavalent actinide nitrate and tetravalent actinide oxalate;When the mixed actinide salt is uranyl nitrate hexahydrate solid and thorium oxalate hexahydrate solid, the MOX fuel powder is (U x Th 1‑x )O2;When the mixed actinide salt is uranyl nitrate hexahydrate solid and plutonium oxalate hexahydrate solid, the MOX fuel powder is (U x Pu 1‑x )O2.The method provided by the present application has simple raw materials, can greatly simplify the preparation process of MOX fuel powder composed of UO2 and PuO2 (or ThO2), reduce the use of process reagent, and does not produce any process waste liquid, thereby providing a simple, high production efficiency, waste liquid-free, more economical and green MOX fuel powder preparation method.

Provided herein are methods for preparing Inonotus obliquus (chaga mushroom) extracts that are substantially free of oxalic acid or oxalate, and to food products containing such extracts.

To provide a crystal of 2 - (4-acetylbenzyl) - 3 - ((4-fluorophenyl) amino) - 577 - trimethyl-7, 8-dihydro-pyrazolo-imidazo [1, 2-a] 2H [4, 3-e] pyrimidin-4 (5H) - one.SOLUTION: Provided is a crystal of an acid addition salt form selected from, for example, succinate form, citrate form, adipate form, tartrate form (e.g., L-tartrate form), malate form, gluconate form (e.g., D-gluconate form), maleate form, fumarate form, aspartate form (e.g., L-aspartate form), hippurate form, sebacate form, glycolate form, galactarate form, benzoate form, pamoate form, oxalate form and malonate form.SELECTED DRAWING: None

This application provides a method for preparing high-whiteness aluminum hydroxide based on oxalate filter cake, belonging to the field of aluminum hydroxide preparation. The method includes: adding sodium oxalate circulating seed to the Bayer process seeding mother liquor to obtain an oxalate filter cake containing aluminum hydroxide; adding sodium carbonate to the oxalate filter cake to adjust the alkali ratio to 0.85–1.15, and adding lime to the oxalate filter cake to obtain a mixture; sintering the mixture to obtain sintered clinker; dissolving the sintered clinker to obtain a sodium aluminate solution; and seeding the sodium aluminate solution to obtain high-whiteness aluminum hydroxide. This application, through precise coupling of process parameters and a full-process design of the impurity control chain, simultaneously achieves deep removal of key impurities such as Fe and Si during the oxalate removal process, transforming the oxalate filter cake from waste into a high-quality raw material for high-whiteness aluminum hydroxide, thus combining the removal of organic matter from oxalate and the preparation of high-whiteness aluminum hydroxide in the Bayer process alumina production.