108 results about "Elemental carbon" patented technology

The invention discloses lithium battery recycling material powder as well as a preparation method and application thereof, and relates to the technical field of battery recycling. The lithium battery recovery material powder comprises metal compound powder and an elemental carbon material, and the metal compound powder comprises at least one of the following elements: lithium, nickel, cobalt, manganese and iron; the separation index S of the lithium battery recovery material powder is greater than or equal to 0.15 m < 2 > / kg and less than or equal to 43 m < 2 > / kg, S = WDOC * BET, WDOC refers to the mass percent of soluble organic carbon in the lithium battery recovery material powder, and the soluble organic carbon refers to organic carbon which can be dissolved or dispersed in an aqueous solution with the pH value of 1-14; bET refers to the specific surface area of the lithium battery recovery material powder. The separation efficiency is high when the positive electrode material and the negative electrode material in the lithium battery recycled material powder are separated, and when the lithium battery recycled material powder is subjected to hydrometallurgy to extract valuable metal, the good metal leaching rate is achieved in the acid leaching stage.

The utility model relates to an organic carbon element carbon monitoring system and an automatic standard solution dropwise adding device thereof, and belongs to the technical field of carbon detection. The organic carbon element carbon monitoring system comprises a heating furnace and a control system, an optical channel is located in the heating furnace, a sampling filter membrane is arranged in the optical channel, and a detector is arranged at an outlet of the optical channel; the device for automatically dropwise adding the standard solution comprises a first branch pipe, a quantitative pipeline and a carrier liquid supply pipeline, wherein the first branch pipe is used for extending into a heating furnace; the quantitative pipeline is used for providing quantitative standard solution; the carrier liquid supply pipeline is used for providing carrier liquid; the input end of the first branch pipe is communicated with the output end of the standard solution quantitative pipeline; the output end of the carrier liquid supply pipeline is communicated with the input end of the standard solution quantification pipeline, and the carrier liquid supply pipeline is used for driving a quantitative standard solution to a reaction area of the organic carbon element carbon monitoring system. According to the device, the measurement of carbonate carbon in the ambient air particulate matters is realized. The automatic titration calibration device avoids the influence of manual operation, has an automatic titration calibration function and is good in repeatability.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The porous particulate nanocomposite is characterized in that, based on the total number of atoms in the particulate nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

The invention belongs to the technical field of seed crystal manufacturing, and particularly relates to a high-strength seed crystal for large-diameter monocrystalline silicon and a preparation method thereof.The high-strength seed crystal for the large-diameter monocrystalline silicon is prepared from, by weight, 30 parts of first seed crystal area silicon liquid, 20 parts of second heavily-doped area silicon liquid and 10 parts of third lightly-doped area silicon liquid; the unique partition design is adopted to improve the performance of the high-strength seed crystal for the large-diameter monocrystalline silicon; in the first seed crystal area, silicon carbide reacts with silicon at high temperature to introduce elemental carbon which hinders dislocation, enhances grain boundary and improves strength and toughness; the seed crystal quality is improved by means of high thermal conductivity; meanwhile, silicon nitride is introduced to generate Si2N2O under the oxygen-deficient condition, and the Si2N2O and elemental carbon form a covalent bond; in the second seed crystal region, heavy doping atoms are introduced to form defects, the combination with carbon in the first seed crystal region is strengthened, sites are provided for light doping in the third seed crystal region, heavy doping and light doping are combined, and the negative influence of heavy doping on the quality of monocrystalline silicon is avoided.

The invention discloses waste battery material powder as well as a preparation method and application thereof, and belongs to the technical field of battery recovery. The waste battery material powder comprises metal compound powder and a simple substance carbon material, the content percentage of carbon in the waste battery material powder is 10-40 wt%, ID / IG is smaller than or equal to 0.5, and ID and IG are the intensity of a D-band characteristic peak and the intensity of a G-band characteristic peak in a Raman spectrum of the waste battery material powder respectively. The waste battery material powder has a relatively low ID / IG value, which indicates that the waste battery material powder has relatively low amorphous carbon content and relatively low oxidation degree of graphite; the waste battery material powder meeting the requirements that the content percentage of the carbon element is 10 wt%-40 wt% and ID / IG is smaller than or equal to 0.5 has the good metal recovery rate in the hydrometallurgy process, and the obtained graphite slag can have the good regeneration capacity.

The invention provides a carbon-based pumice stone and a preparation method thereof, and belongs to the technical field of new material preparation in water treatment. The base material and / or the silica-alumina ratio blending agent are / is used as the main material, the foaming agent and the foaming promoter generate a large number of bubbles during foaming, and a large number of open pores and gaps are formed in the material, so that the effective porosity is improved; a gas-retaining agent is adopted to wrap the material, so that generated bubbles are prevented from quickly escaping, and the effective porosity is further improved; cO generated by organic carbon and biochar is deoxidized into pure elemental carbon molecules by sintering under a sealed condition, and meanwhile, a honeycomb-shaped pipeline bundle structure consisting of carbon molecules is formed by self-assembly in a pre-manufactured gap, so that the adsorbent has excellent adsorbability and liquidity; by adopting sludge or organic sludge and a small amount of auxiliary carbon sources, a structure which takes silicon oxide as a main body and contains honeycomb-shaped carbon molecule pipeline bundles connected with a large number of air holes is obtained, the performance of the material is greatly improved, meanwhile, the use of a large number of wood materials is reduced, and the cost of raw materials is saved.

The invention relates to an organic carbon element carbon monitoring system and method, and belongs to the technical field of carbon detection. The organic carbon element carbon monitoring system comprises a first switching module, a quantitative pipeline, a second switching module, a third switching module and an output pipeline which are connected in sequence, the first switching module is used for enabling the inlet of the quantitative pipeline to be selectively communicated with the standard solution supply pipeline or the carrier liquid supply pipeline; the second switching module is used for selectively communicating the outlet of the quantitative pipeline with the waste liquid collecting pipeline or the inlet of the third switching module; the third switching module is used for enabling the inlet of the output pipeline to selectively communicate with the gas supply pipeline or the outlet of the second switching module; an outlet of the output pipeline extends into the branch pipe, and the branch pipe is communicated with the optical channel through the first opening. The automatic titration calibration device avoids the influence of manual operation, has an automatic titration calibration function and is good in repeatability. In addition, interference of water on carbon dioxide measurement is eliminated, and errors are reduced.

Removing metal from metal-carbon material includes contacting the metal-carbon material with hydrogen chloride, thereby yielding a metal chloride in the gas phase and a solid product comprising carbon. The metal-carbon material and the solid product may both contain elemental carbon. A concentration of metal in the solid product is typically less than 1 wt %.

The invention provides a calcium-based desulfurizer. The calcium-based desulfurizer comprises CaO, fly ash and a waste refractory material. According to the desulfurizing agent provided by the invention, waste refractory materials and fly ash in a steel mill are utilized, so that the utilization of waste resources is realized. Wherein the added alumina-carbon refractory material and fly ash can form low-melting-point calcium aluminate salt and silicate with CaO in the desulfurized slag, the fluidity of the slag is improved, rolled iron and wrapped iron of the desulfurized slag are reduced, the consumption of steel and iron materials is reduced, in addition, the fly ash and the alumina-carbon refractory material also contain part of C element, the dissolution of the carbon element can recarburize semi-steel, more heat sources are provided, and the service life of the semi-steel is prolonged. And the addition amount of the scrap steel is increased.

This phosphorus-carbon composite negative electrode material comprises a phosphorus-carbon material containing phosphorus atoms and elemental carbon, and a coating material that coats at least a portion of one particle of the phosphorus-carbon material, wherein the coating material contains a polymer compound, and has a coverage rate measured by an energy-dispersive X-ray spectroscopy method of 0.1% to 5%. In the phosphorus-carbon composite negative electrode material, a ratio WL620 / WL780 between a weight reduction rate WL620 at a measurement temperature of 620°C determined by a prescribed thermal weight measurement and a weight reduction rate WL780 at a measurement temperature of 780°C is preferably 0.1 to 0.9.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The particulate nanocomposite material is characterized in that, based on the total number of atoms in the nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

Producing an ordered graphitic carbon includes contacting a material including disordered elemental carbon and a metal with chlorine gas, thereby yielding a gaseous product comprising a chloride of the metal and a solid product comprising the ordered graphitic carbon.

A method of remediating a contaminated aqueous medium includes contacting the aqueous medium with an amount of a particulate nanocomposite material that contains elemental carbon (C); an orthorhombic titanium dioxide (TiO2); a tetragonal TiO2 crystalline phase; a cubic cadmium oxide (CdO) crystalline phase; a hexagonal magnesium titanate (MgTiO3) crystalline phase; and, an orthorhombic magnesium titanate oxide (Mg0.6Ti2.4O5). Based on the total number of atoms in the nanocomposite material and as determined by energy dispersive X-ray spectroscopy, the nanocomposite material has an atomic concentration of carbon (C) of from about 1 atomic percent (at. %) to about 5 at. %; an atomic concentration of magnesium (Mg) of from about 5 to about 15 at. %; an atomic concentration of titanium (Ti) of from about 15 to about 30 at. %; and, an atomic concentration of cadmium (Cd) of from about 1 to about 10 at. %.

A ceramic sintered body contains a first particular element consisting of five or six elements selected from among titanium (Ti), vanadium (V), zirconium (Zr), niobium (Nb), molybdenum (Mo), hafnium (Hf), tantalum (Ta), and tungsten (W); a second particular element consisting of one element selected from yttrium (Y) and aluminum (Al); and elemental carbon (C). The total amount of the first particular element, the second particular element, and elemental carbon is 98 at % or more. The ceramic sintered body has a plurality of microstructures having respective compositions different from one another. One of the plurality of microstructures includes a solid solution containing at least three members of the first particular element.

The present invention relates to a composite modified zeolite for efficiently solidifying fly ash heavy metals, a preparation method and an application thereof. The composite modified zeolite is a base-phosphate-carbonate composite modified zeolite, and its pH is 7.2-9.1. The surface is loaded with 31%-50% phosphorus and 12%-36% carbon by mass fraction, wherein the phosphorus is loaded in the form of a phosphate group and the carbon is loaded in the form of a carbonate group; the phosphate group includes PO4 3‑ , the carbonate type includes -CO3 2‑ Using this composite modified zeolite as the immobilization and stabilization material, adding 1% of the fly ash mass to the treatment once can reduce the leaching concentrations of lead, cadmium, and zinc in the fly ash to below the limit specified in the "Standard for Pollution Control of Municipal Waste Landfill" (GB 16889-2008). It can be used for the solidification and stabilization of heavy metals in incineration fly ash, especially lead, cadmium, and zinc in the solidified and stabilized fly ash.

A ceramic sintered body contains a first particular element consisting of five or six elements selected from among titanium (Ti), vanadium (V), zirconium (Zr), niobium (Nb), molybdenum (Mo), hafnium (Hf), tantalum (Ta), and tungsten (W); a second particular element consisting of one element selected from yttrium (Y) and aluminum (Al); and elemental carbon (C). The total amount of the first particular element, the second particular element, and elemental carbon is 98 at % or more. The ceramic sintered body has a plurality of microstructures having respective compositions different from one another. One of the plurality of microstructures includes a solid solution containing at least three members of the first particular element.

An energy-releasing process for making fertilizer by consumption of a charable, reduced carbon source. The process comprises: (a) combining the carbon source with an oxide of an active metal to form a feedstock for high-temperature processing; (b) heating the feedstock in a furnace to yield an effluent gas entraining a carbide of the active metal; (c) cooling the effluent gas entraining the carbide of the active metal; (d) introducing nitrogen into the cooled effluent gas entraining the carbide of the active metal, to yield a cyanamide of the active metal and elemental carbon; (e) acidically hydrolyzing the cyanamide of the active metal to yield a cyanamide compound and a salt of the active metal; and (f) processing the cyanamide compound to yield an N-type fertilizer.

The invention discloses a preparation method of a mesoporous carbon material. The preparation method comprises the following steps: stirring, dispersing and scattering mineral raw materials to form slurry; the mineral raw materials comprise crystalline components and amorphous components, the crystalline components account for 78% of the mineral mass fraction, and the amorphous components account for 21% of the mineral mass fraction; the crystalline component comprises quartz, pyrite, kaolinite and mica, and the quartz accounts for 91% of the mass fraction of the crystalline component; the amorphous substance comprises water, elemental carbon and an organic matter, and the elemental carbon accounts for 95% of the mass fraction of the amorphous component; carrying out repeated nanocrystallization grinding on the slurry to prepare nanoscale mineral slurry; treating the nanoscale mineral slurry to prepare carbon powder; treating the carbon powder to obtain high-purity carbon powder; mixing the high-purity carbon powder with a certain amount of adhesive, and then carrying out gluing treatment to prepare glued carbon powder; and calcining the glued carbon powder to prepare the mesoporous carbon material. The preparation method is simple in technological process, the mesoporous carbon is prepared in a gluing and high-temperature activation mode, and the preparation method is low in production cost and environmentally friendly.

Disclosed in the present invention are a C-TiO2 composite material using a carbon source as a raw material, a preparation method therefor and the use thereof. The preparation method comprises: dispersing a carbon source and TiO2 powder in a polar solvent to obtain a suspension A; heating the suspension A under a stirring condition, and volatilizing the polar solvent to obtain a mixture B; and calcining the mixture B to obtain a C-TiO2 composite material, wherein the carbon source comprises a first carbon source and / or a second carbon source, the first carbon source is elemental carbon, and the second carbon source is an organic matter that can be pyrolyzed to generate carbon. The present invention uses recycled or cheap carbon sources as raw materials to prepare the C-TiO2 composite material, which can effectively reduce environmental pollution caused by decommissioned new energy power lithium batteries while providing a feasible solution for the high-value utilization of cheap carbon sources. The C-TiO2 composite material is applied to the field of electrocatalytic water splitting to prepare efficient and stable oxygen evolution catalytic electrodes, thus realizing ampere-level current density applications oriented to industrial requirements.

The application belongs to the field of detection and analysis, and particularly relates to a method for detecting free carbon in cemented carbide mixture based on pretreatment, which comprises the following steps: S1, obtaining cemented carbide mixture, the components of the cemented carbide mixture including at least one of chromium carbide, silicon carbide and boron carbide, and grinding the cemented carbide mixture into cemented carbide mixture powder; S2, mixing, stirring and centrifugally separating the cemented carbide mixture powder and heavy liquid to obtain a mixture; taking out the upper layer liquid containing elemental carbon of the mixture and washing and solid-liquid separating to obtain an initial sample to be detected; S3, rinsing and drying the initial sample to be detected to obtain a final sample to be detected, and detecting the final sample to be detected to obtain the content of free carbon. Through the improved pretreatment detection method of free carbon in cemented carbide mixture, the accuracy and efficiency of detection are improved, the range of detection of free carbon in cemented carbide is expanded, and the method is suitable for more kinds of carbides.

A gas diffusion electrode according to one embodiment of the present invention has a microporous layer, containing carbonaceous fine particles and a fluorine-based water-repellent resin, on at least one surface of a conductive porous substrate. In the gas diffusion electrode, the ratio (surface layer F / C) of elemental fluorine to elemental carbon detected, at 1,000 times magnification and an acceleration voltage of 2.0 kV by scanning electron microscope energy dispersive X-ray spectroscopy (SEM-EDX), on the surface on the side of the microporous layer with which the conductive porous substrate is not in contact is 0.35 or more and 0.60 or less.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); an orthorhombic magnesium iron borate (MgFe(BO3)O) crystalline phase; an orthorhombic calcium diborate (CaB2O4) crystalline phase; and, a monoclinic magnesium diborate (Mg2B2O5) crystalline phase. The nanocomposite is further characterized in that, based on the total number of atoms in the particulate nanocomposite material and as determined by energy dispersive X-ray spectroscopy (EDX), the atomic concentration of carbon (C) is from about 0.1 atomic percent (atom %) to 5 atom %, the atomic concentration of calcium (Ca) is from about 5 to 15 atom %, the atomic concentration of boron (B) is from about 1 to 10 atom %, the atomic concentration of iron (Fe) is from about 5 to 15 atom %, and the atomic concentration of magnesium (Mg) is from about 5 to 15 atom %.

The application discloses a preparation method of a bismuth single element / bismuth oxide / carbon nitride composite material and application of the bismuth single element / bismuth oxide / carbon nitride composite material as a chlorine removal agent, and the bismuth single element / bismuth oxide / carbon nitride composite chlorine removal agent is prepared by taking bismuth nitrate pentahydrate as raw material and introducing melamine precursor. In the process of calcination, the melamine generates elemental carbon and carbon monoxide, and plays a regulating role in the morphology of the chlorine removal agent; the reducing property generated in the forming process can convert Bi 3+ into Bi single element, and the surface plasmon resonance effect of the Bi single element is utilized to improve the photocatalytic chlorine removal performance of the composite chlorine removal agent.

Identifying and quantifying tire wear includes heating a sample including particulate matter obtained from tire wear and soot to a first temperature to thermally desorb an amount of organic carbon from the sample, cooling the sample from the first temperature to a second temperature, heating the sample from the second temperature to a third temperature to thermally desorb an amount of elemental carbon from the sample, and identifying an amount of tire wear particulate matter in the sample based on the amount of elemental carbon in the sample.

The present invention relates to a carbon-silicon oxide nanocomposite material based on clay minerals and its preparation method and application, belonging to the technical field of inorganic nanomaterials. The method for preparing a carbon-silicon oxide nanocomposite material based on clay minerals provided by the present invention comprises the following steps: (1) carbonizing a carbon-containing clay mineral in an inert atmosphere to obtain a composite of carbon and clay minerals; (2) grinding the composite of carbon and clay minerals to obtain a ground product; (3) subjecting the ground product to acid treatment, followed by washing and drying to obtain a carbon-silicon oxide nanocomposite material. The prepared nanocomposite material has a large specific surface area, a multi-level pore structure, a hydrophobic surface, good adsorption properties, contains carbon and silicon elements, has high carbon-silicon interface stability, and has good ion / electron transmission performance. It has a wide range of application value in the fields of organic pollutant treatment and lithium-ion batteries.

The application relates to a preparation method of gaseous elemental carbon for synthesizing silicon carbide, which comprises the following steps: S1, placing a carbon source in a reaction chamber 1, heating the carbon source, and obtaining gaseous elemental carbon, wherein the carbon source is high-purity fullerene; S2, placing a silicon source in a reaction chamber 2, heating the silicon source, and heating to 1100-1900 DEG C; S3, under the protection of an inert gas atmosphere, the gaseous elemental carbon flows into the reaction chamber 2, heat preservation reaction is carried out for 4-10 h, the gaseous elemental carbon reacts with the silicon source, and after the reaction is completed, cooling is carried out, and silicon carbide is obtained. The silicon carbide prepared by the method has the characteristics of large particles and high purity, is beneficial to improving the performance of semiconductor materials, and has an excellent industrial application prospect.

The invention relates to an application of elemental carbon in laser desorption ionization mass spectrometry detection, and the elemental carbon (EC) is obtained by cleaning and extracting components of organic carbon (OC) by using an incomplete combustion product Soot. The EC is used as a material of a graphite-like structure, is used as a substrate when environmental pollution particles are analyzed by using LDI-MS, and can enhance the detection strength of aromatic compounds in the particles. Furthermore, when the EC is used for analyzing aromatic substances, the EC has a better enhancement effect on substances containing reactive hydrogen (PAH with OC containing odd carbon in the invention, namely PAHodd) and substances with lower conjugacy. According to the device and the method, pollution particulate matters are recycled, detection and analysis of particulate matter components are facilitated, and the detection sensitivity of aromatic substances is improved.

The present invention provides a method for producing glucose, the method comprising bringing a liquid which contains cellulose and water into contact with a solid acid catalyst. The solid acid catalyst contains elemental carbon, elemental titanium, and silica, and has a sulfo group as a surface functional group. The present invention also provides a solid acid catalyst for glucose production, the solid acid catalyst containing elemental carbon, elemental titanium, and silica, while having a sulfo group as a surface functional group.

The present invention discloses an organic carbon element carbon analyzer, comprising a decomposition furnace, a decomposition pipeline, an oxidation furnace and a detector, wherein the decomposition furnace comprises a decomposition furnace tube and a filter membrane arranged in the decomposition furnace tube, and a decomposition furnace heating device arranged on the decomposition furnace tube and used for heating the filter membrane, the decomposition pipeline is connected with the decomposition furnace tube, the oxidation furnace is arranged around the outer circumference of the decomposition pipeline and is provided with an air inlet and an air outlet at two opposite ends, the oxidation furnace is connected with the decomposition pipeline through the air inlet, and the detector is connected with the air outlet. In the organic carbon element carbon analyzer provided by the embodiment of the present invention, the oxidation furnace is arranged around the outer circumference of the decomposition pipeline, so that the entire gas path between the decomposition furnace and the oxidation furnace is in a high temperature state, which weakens the adsorption capacity of the decomposition pipeline to the decomposition gas, reduces sample loss, and improves the accuracy of the detection result.

The invention discloses a WC-Co coating good in interface bonding and capable of inhibiting generation of hard and brittle harmful phases and a preparation technology of the WC-Co coating, and relates to the technical field of hard alloy coating materials.The WC-Co coating is prepared by designing powder components and structures and adopting an optimized solid-phase mechanical alloying technology, and the WC-Co powder containing elemental carbon of an elemental carbon coating structure is prepared; by combining and adopting optimized supersonic flame spraying process parameters (fuel gas pressure, fuel gas flow, oxygen pressure, oxygen flow, powder feeding gas pressure, powder feeding gas flow and spray gun moving speed), a non-oxidizing microenvironment in the particle deposition process is constructed in situ in real time, and decomposition, oxidation and decarburization of WC in the deposition process of good melting particles are inhibited. And a high-WC-volume-fraction coating organization structure which is good in combination and free of hard and brittle harmful phases is prepared, and the WC-Co coating high in toughness and wear resistance is obtained.