278 results about "Single substance" patented technology

The present invention relates to a process for producing a spherical particle comprising an aggregate of particles containing at least 95% of a water-soluble single substance having a viscosity of 10 mPa.s or less as determined in the form of a saturated aqueous solution, the process comprising: preparing moist spherical particles of the single substance by charging, as cores, crystalline particles or granulated particles of the single substance on a rotary disc in a processing vessel of a centrifugal tumbling granulating apparatus, wherein the granulated particles are prepared by granulating a powder of the single substance, and dispersing over the cores a powder of the single substance and simultaneously spraying on the cores a liquid such as water or the like while supplying slit air to provide a fluidized condition; and then fixation treating the moist spherical particles by drying them while spraying an aqueous solution of the single substance or the like on the spherical particles in a fluidized bed apparatus; to the spherical particle produced by the process; and to a pharmaceutical preparation and a food containing the spherical particle.

The invention discloses a preparation method of lithium metal through electrolysis, which comprises the following steps: at normal temperature and normal pressure, applying direct current voltage on an anode current collector and a cathode current collector so that potassium ions in a water phase in an anode chamber penetrate through a diaphragm having lithium ion conductor characteristics under the driving of the voltage, an organic solvent in a cathode chamber is reduced to a metal lithium single substance which is deposited and enriched on the surface of the cathode current collector to obtain the product, wherein the anode chamber of an electrolysis cell is filled with an aqueous solution at least containing the lithium ions, the cathode chamber od the electrolysis cell is filled with the organic solvent having the lithium ion conductor characteristics, the diaphragm for separating the anode chamber from the cathode chamber is a lithium ion conductor ceramic membrane having the lithium ion conductor characteristics or a composite membrane of a lithium ion conductor and a polymer, and the cathode chamber is in inert gas atmosphere. The electrolysis preparation method for lithium metal avoids severe conditions which are required to prepare lithium metal by a traditional high temperature molten electrolysis process, and has the characteristics of low energy consumption, high lithium extraction efficiency and high product purity and is environment-friendly and wide in raw material sources.

The invention discloses a cosmetic anti-aging skincare composition containing nicotinamide mononucleotide (NMN). The NMN is taken as the active component and is used to produce the cosmetic anti-aging skincare composition. Because the NMN is the single substance in organism cells, the safety of the NMN is high. The provided skincare composition can prevent skin becoming rough and aged, reduce the skin wrinkles, and maintain the elasticity and bright color of the skin.

The present invention relates to aromatic amine derivatives having a specific structure; and organic electroluminescent devices comprising a cathode, an anode and one or plural organic thin film layers including at least a light emitting layer which are sandwiched between the cathode and the anode wherein at least one of the organic thin film layers contains the above aromatic amine derivatives in the form of a single substance or a component of a mixture. There are provided the organic electroluminescent devices exhibiting a long life and a high efficiency of light emission which are capable of emitting a blue light having a high color purity, as well as the aromatic amine derivatives capable of realizing such organic electroluminescent devices.

The invention discloses a reinforced composite adopting a honeycomb structure and a preparation method. The composite comprises a honeycomb substrate material, a high-thermal-conductivity film layer, a matrix material and high-thermal-conductivity particles, wherein the honeycomb substrate material is metal; the high-thermal-conductivity material is a single substance or a combination of multiple substances of diamond, graphene and carbon nanotubes; the matrix material is a high-thermal-conductivity metal material or a polymer material. A continuous rapid thermal conduction channel is formed in the composite in the honeycomb structure direction, the composite has better directional thermal conduction performance in the axial direction of the honeycomb, graded management of heat can be realized to a certain extent, and the material utilization rate is higher. Besides, the honeycomb structure has the characteristics of high designability, stable quality, high strength and light weight, can meet the demands for high-performance light radiating materials in the fields such as aerospace, ships, transportation and the like and is suitable for industrial application.

A resilient device for joining a handle to a pivot bar of a wire support frame of a dust mop or other work member which allows for hands free operation to attach and remove the mop head or other work member. The holder includes a resilient member having first and second jaws extending generally parallel from one end of a base. Each of the jaws has an inner wall and an outer wall and which define at least an outer engagement slot and an inner engagement slot between their respective inner walls. The jaws also define an open end distal to the base and a closed end proximal or at the base. The outer engagement slot being arranged transversely to an axial direction of the first and second jaws proximal to an open end portion of the jaws opposite to the base. The inner slot is proximal to a closed end portion of the jaws proximal to the base. Typically, the entire apparatus can include a single or unitary piece of plastic or a single substance.

The invention discloses a coal-fired flue gas PM2.5 / SO3 / Hg combined removing method based on desulfurization wastewater evaporation treatment. According to the method, a chemical agglomerating agent composed of a polymer binder and a wetting agent is added into desulfurization wastewater; then the wastewater is sprayed into a flue, the thermal energy contained by flue gas can completely evaporate desulfurization wastewater before wastewater enters an electric deduster, during the evaporation process, the chemical agglomerating agent connects multiple PM2.5 or PM2.5 with crude dusts, PM2.5 is agglomerated and enlarged; chlorine-containing solid products precipitated during the desulfurization wastewater evaporation process and chlorides attached on the fly ash can promote the conversion of single-substance mercury to mercury in an oxide state or particle state; and at the same time, when the flue gas temperature is cooled to a range between the acid dew point and water dew point, the SO3 is condensed and absorbed on the dust surface. The enlarged particles, mercury in a particle state, and SO3 will enter an electric deduster along with the flue gas, then particles, mercury, and SO3 are eliminated in the electric deduster, and the mercury in an oxide state is eliminated by a desulfuration tower. The provided method can efficiently remove PM2.5, SO3, and Hg and is capable of achieving zero-discharge of desulfurization wastewater.

The invention discloses a monolithic catalyst for hydrogen peroxide production through a pentylanthraquinone process and a preparation method thereof. The catalyst comprises an active component, a co-catalyst, and a carrier; wherein the active component is a combination of one or more elements of platinum group precious metals, the active component (calculated by single substance of precious metals) accounts for 0.01 to 5% of the total mass of the monolithic catalyst, and Pd (calculated by single substance) accounts for 50 to 100% of the total mass of the precious metals. Furthermore, the provided monolithic catalyst can be produced through a simple impregnation method, the preparation method is simple, the preparation process is easy to control, and the prepared monolithic catalyst has a high catalytic activity and selectivity in the hydrogenation reactions of 2-pentylanthraquninone. The provided monolithic catalyst integrates the advantages of conventional slurry bed reactor and trickle bed reactor together and discards the disadvantages of conventional slurry bed reactor and trickle bed reactor, so the efficiency of selective hydrogenation of 2-pentylanthraquinone is improved.

The invention discloses a boracic titanium carbonitride based cermet tool bit material and the preparing method thereof. The tool bit material is based on carbonitride as the parent metal, characterized in the tool bit is composed of 0.005% to 0.25% by mass of boron, 6% to 11% by mass of C, 2% to 7% by mass of N, 35% to 70% by mass of Ti, 5% to 20% by mass of W, 0 to 12% by mass of Mo, 0 to 9% by mass of Ta, 1% to 7% by mass of Nb and 6% to 25% by mass of Co and Ni, wherein boron is prepared by adding one or more selected from single substance boron, titanium diboride, molybdenum boride, boron carbide and boric oxide which are in raw material power form. The tool bit material is prepared mainly by mixing the raw material, ball-milling dispersing, press forming, pre-sintering and high-temperature sintering, its high-temperature hardness, high-temperature strength, red hardness and inoxidability are obviously improved, the cutting speed is greatly increased, and the service life is notably entended.

The invention discloses a method for preparing an antibacterial porous oxidized graphene / chitosan composite bracket. The method comprises the steps of taking carboxylated graphene oxide as an antibiotic carrier; carrying out electrostatic interaction by carboxyl on the surface of the oxidized graphene and amino on the antibiotic, so as to absorb the antibiotic on the oxidized graphene; taking the chitosan as the carrier of antibacterial metal ions, chelating the metal ions in chitosan molecules, restoring the metal ions into metallic single substances through a reducing agent; and finally mixing the carboxyl graphene with the antibiotic and the chitosan solution loaded with antibacterial metal, freezing and drying to obtain the composite bracket with two different antibacterial materials. The composite bracket can release antibiotic within a short period of time and release the antibacterial metal ions for a long period of time, and has short-term antibacterial and long-term antibacterial effects, and good antibacterial effect.

The invention provides a nano-gold catalyst supported on combined metal oxide, a preparation method and an application thereof. The preparation method comprises the following steps: preparing layered double hydroxides (LDH) precursor crystal nucleus and dispersing the LDH precursor crystal nucleus into sucrose solution; then adding chloroauric acid solution in the obtained mixture so as to reduce Au3+ in HAuCl4 to Au single substances by using the reduction of glucose and fructose produced by sucrose hydrolysis; in the process of reduction, crystallizing the LDHs so as to obtain solid LDH supported on nano-gold; and carrying out high-temperature roasting on the solid LDH supported on the nano-gold so as to obtain the nano-gold catalyst supported on the combined metal oxide. The combined oxide of the catalyst is taken as a carrier on which the nanosize gold particles is supported, wherein the combined oxide refers to MgO or compound of ZnO and Al2O3, and the mole ratio of the MgO to the compound of ZnO and Al2O3 is 2-6:1; the gold capacity is 0.5 to 3 percent, the size of the gold particle is 8 to 15nm, and the gold particle is ellipsoidal or polyhedral. When the catalyst is used in the catalytic hydrogenation reaction of unsaturated aldehydes, the conversion rate of reactants reaches 60 to 97 percent, and the selectivity of cinnamyl alcohol is 40 to 75 percent.

The invention relates to a method for decomposing a thermosetting epoxy resin or a composite material thereof by high-temperature water phases, which belongs to the technical field of regenerative utilization of waste resin materials or treatment of industrial wastes. The method is characterized by comprising the following steps: putting certain amount of thermosetting epoxy resin sheets or granules, and deionization and catalyst heteropolyacid into a high-temperature high-pressure stainless steel reaction kettle; heating the reaction kettle to raise the temperature to a temperature of 250 and 370 DEG C for 30 to 120 hours; and decomposing the water diversion phase so that the decomposed product becomes an oligomer or a single substance which cannot be dissolved in liquid phase and is easy to separate. The method mainly adopts heteropoly acid, phosphotungstic acid, tungstosilicic acid, or molybdenum phosphoric acid as a catalyst, the addition of the catalyst is 0.1 to 3.0 percent of that of deionized water, and a higher decomposition rate of the epoxy resin can be obtained finally. The method does not need to use an organic solvent as a decomposing liquid, but uses water as the decomposing liquid, thus the method has low cost and is pollution-free to the environment; and the method can achieve the aims of waste regeneration and utilization as well as environmental protection.

Apparatus for performing Raman analysis may include a laser source module, a beam delivery and signal collection module, a spectrum analysis module, and a digital signal processing module. The laser source module delivers a laser beam to the beam delivery and signal collection module. The beam delivery and signal collection module delivers the laser source beam to a sample, collects Raman scattered light scattered from the sample, and delivers the collected Raman scattered light to the spectrum analysis module. The spectrum analysis module demultiplexes the Raman scattered light into discrete Raman bands of interest, detects the presence of signal energy in each of the Raman bands, and produces a digital signal that is representative of the signal energy present in each of the Raman bands. The digital signal processing module is adapted to perform a Raman analysis of the sample.

The invention relates to an electrochemical sensor capable of simultaneously detecting dopamine, ascorbic acid and uric acid. The electrochemical sensor comprises a work electrode, a reference electrode, and a counter electrode; wherein the substrate electrode of the work electrode is a glass-carbon electrode, the surface of the work electrode is coated with a composite material of graphene and mesoporous ferroferric oxide, the reference electrode is a saturated calomel electrode (SCE), and the counter electrode is a platinum wire electrode. Under an optimum condition, the electrochemical sensor can achieve the measurement of a single substance in a high concentration of coexisting substances, and can also simultaneously detect dopamine, ascorbic acid and uric acid. The electrochemical sensor not only avoids the phenomenon that the summit potentials of dopamine, ascorbic acid and uric acid overlap with each other, but also improves the sensitivity, repeatability, and stability of the conventional method.

The invention relates to a lithium-sulfur battery positive pole material and a preparation method thereof, and belongs to the technical field of battery materials. The provided positive pole material has abundant micropores and mesopores; porous nano carbon thin sheets with a three-dimensional communicated net structure are taken as the skeleton; nano sulfur dots are filled into the pores of the net structure, and the outer layer of the skeleton is wrapped by reduced oxidized graphene. The preparation method comprises the following steps: mixing porous nano carbon thin sheets with a sulfur single substance, subjecting the mixture to ball milling, carrying out reactions at a temperature of 180 to 200 DEG C in an enclosed environment in the absence of oxygen and water under the protection of inert gas to obtain a porous nano carbon thin sheet / nano sulfur compound; dissolving the compound into an ethanol solution, dispersing the compound by ultrasonic waves, adding oxidized graphene, adjusting the pH to 10.1 by ammonia water, carrying out ultrasonic dispersion, carrying out hydrothermal reactions at a temperature of 80 to 100 DEG C, filtering, washing the reaction product until the reaction product becomes neutral, and drying to obtain the positive pole material. The positive material has the advantages of high specific capacity and stable electrochemical circulation performance, moreover, the preparation method is simple, the price is low, and the positive material is environment-friendly and can be easily produced in batches.

A method for operating an auto-ignition internal combustion engine that is operable in a single substance mode in which the internal combustion engine is supplied with self-igniting liquid fuel, and a dual substance mode in which the internal combustion engine is supplied with the liquid fuel as an ignition agent and gaseous or liquid alternative fuel, includes operating the internal combustion engine in the dual-substance mode at an increased exhaust gas recirculation rate relative to the single-substance mode, and throttling an air supply in an intake system of the internal combustion engine such that a lambda value in an exhaust gas of the internal combustion engine is in a range greater than 1 up to 1.3.

The invention relates to an overall extraction method of effective components of mulberry leaves. The method comprises the steps that mulberry leaves serve as raw materials, ultrasonic alcohol extraction and water extraction are sequentially conducted to obtain alcohol extract, water extract and extracted filter residues, concentration, extraction and decoloration are conducted on the alcohol extract, enrichment and elution are conducted through anion exchange resin and cation exchange resin to obtain mulberry leaf flavone and DNJ, and saponification, copper substitution reaction and salifying are conducted on removed pigment to prepare chlorophyll sodium copper; alcohol precipitation is conducted after concentration is conducted on water extract, protein and polysaccharide are clarified and separated through a clarifying agent, spray drying is conducted on the polysaccharide to prepare mulberry leaf polysaccharide, the protein is added to conduct enzymatic hydrolysis, and micromolecule oligopeptide is prepared; ultrasonic alkali washing is conducted on extracted residues, soak degreasing is conducted on ethyl alcohol, and mulberry leaf dietary fibers are prepared; by means of the overall process, the mulberry leaves are completely dissolved in a one-station mode, six main products are prepared, the effective components in the mulberry leaves are fully utilized, and the additional value is increased; compared with single substance extract, the huge profit space and economic value exist, good business prospect is achieved, and the overall extraction method of the effective components of the mulberry leaves is suitable for large-scale industrial production.

It is an object of the present invention to provide an anticorrosive coating composition which uses a pollution-free (heavy metal-free) rust preventive pigment and exhibits anticorrosive performances equal or superior to those of lead compounds or chromic acid compounds even if the pigment is blended in various binder resins and also to provide an anticorrosive coating composition having excellent storage stability. The present invention relates to an anticorrosive coating composition comprising a binder resin and a pollution-free (heavy metal-free) rust preventive pigment containing a condensed calcium phosphate produced by baking a single substance or mixture of a calcium component and a phosphorous component in the following atomic ratio (Ca / P=m): 0.50<m<1.00, at 180 to 350° C.

A complex heat pipe controller, making method and application consisting of the heat conductive controller and heating controller, which contains single substance or composite working medium, normal and / or closed cavity with changed and / or same section, the cavity can have only one closed loop, integral and / or auxiliary fins. Said invention also provides heat pipe heat column controller, complex heat pipe air cooling controller, complex heat pipe liquid cooling controller, complex heat pipe micro channel radiator, complex heat pipe fog jetting controller, complex heat pipe phase change material controller, and complex heat pipe controller with low cost, high reliability, high quality and long service life.

The invention discloses a system and a method for cooperatively removing mercury with desulfurization waste water. The system comprises a sulfur removal tower, an impurity removal system, a concentration device, an electrolysis device and an alkaline liquor storage device. The method comprises the following steps: removing impurity ions of SO4<2->, magnesium ions, calcium ions and the like of the desulfurization waste water; deeply purifying and concentrating the desulfurization waste water with impurity ion removed; electrolyzing concentrated desulfurization waste water; introducing a chlorine gas produced by electrolysis into a flue of a desulfurization tower to oxide a mercury single substance, thereby removing the mercury in the smoke gas. According to the system and the method disclosed by the invention, the problem that the outlet water of a conventional desulfurization waste water treatment process is high in salt content is solved, efficient cooperative mercury removal can be realized, and Cl2 and NaOH solutions and a clean energy source H2 which are extensively applied can be obtained.

The invention relates to a treatment method of a zinc-containing and iron-containing waste acid. The method comprises the following steps: adding a reducing agent to the zinc-containing and iron-containing waste acid, and fully reacting to obtain a reducing liquid; filtering the reducing liquid to collect a first filtrate; adding concentrated sulfuric acid into the first filtrate, and uniformly stirring to obtain a mixed liquid; evaporating and concentrating the mixed liquid at 90-110 DEG C to obtain a concentrated liquid; filtering the concentrated liquid at 70-100 DEG C to obtain a mixture with solids of FeSO4.H2O and ZnSO4.H2O. A certain amount of zinc-containing and iron-containing waste acid and concentrated sulfuric acid is added into the filtered second filtrate for a concentration and crystallization process in the next cycle. According to the treatment method of the zinc-containing and iron-containing waste acid, heavy metal ions are replaced to single substances, and after solid impurities in the reducing liquid are filtered to remove, the concentrated sulfuric acid is added. The mixture is evaporated, concentrated and filtered to obtain the crystal mixture with solids of FeSO4.H2O and ZnSO4.H2O. The crystal mixture can be used as a mineral additive for feed. According to the treatment method of the zinc-containing and iron-containing waste acid, the recovery rates of zinc and iron are higher, and the product has broad market prospect.

The present invention provides a way to obtain SiCl4 with high activity and selectivity by allowing metal Si or a chlorosilane having HSi bond in the molecule to react with HCl in the coexistence of a specific metal and a specific single substance of an element. Metal Si or a chlorosilane having HSi bond in the molecule and HCl are react with each other in the coexistence of one or more metals of group VIII elements in periodic table and one or more single substances of group VB elements of the 3rd and succeeding period.

The invention discloses a refractory castable containing viscoplasticity phase, comprising refractory aggregate, refractory fine powder, oxide fine powder, a bonding agent and an additive, wherein the granularity of the refractory aggregate is 1-8mm, the granularity of the refractory fine powder is 0.044-1mm, the granularity of the oxide fine powder is less than 5mum, and the granularity of the bonding agent is less than 0.088 mm. According to the invention, single-substance aluminum powder and single-substance silicon powder are added into the refractory castable; the single-substance silicon powder is liquefied or softened during the material sintering, so that the material can produce liquid-phase sintering at low temperature to improve the bonding strength; the introduced aluminum powder reacts with water to form Al(OH)3 and then forms Al2O3 with big activity after being heated and decomposed; the SiO2 and Al2O3 react to form needle / column-shaped mullite crystals, therefore strength of the castable is improved; and meanwhile, part silicon powder becomes viscoplasticity phase at high temperature, and disperses in the material, thus, the toughness of the material is improved and the thermal shock resistance of the castable is improved.

The invention relates to a toning lotion containing a pearl water extract and a preparation method. The preparation method comprises the following steps of: preparing a pearl powder extract through carrying out high-pressure homogenization, membrane filtration and separation on a pearl powder suspension by combining modern scientific technologies and traditional processes and adopting a purified water boiling method; and mixing and homogenizing the pearl water extract with butanediol, propylene glycol, glycerin, hyaluronic acid, sodium, flavor, and the like to prepare a pearl toning lotion containing the pearl water extract. The invention overcomes the defects brought by acid hydrolysis and enzymatic hydrolysis in the prior art, pearl liquid extracted by using the method provided by the invention contains 18 kinds of amino acids in total, and the active ingredients can be stored in hydrolysates in a stable and homogeneous state. A chemical reagent is scarcely added in the process for preparing the pearl water extract by using the method provided by the invention, trace elements, i.e. natural pearl active ingredients, can be fully extracted without harming skin, and filter residuesobtained after extracting the pearl water extract can be used as natural raw materials for a calcium-supplementing preparation so as to gain multiple advantages by a single substance.

The invention discloses a preparation method of a bismuth telluride based N type thermoelectric material Bi2(Te<1-x>Se<x>)3. A melt mixing step and a zone melting step are used for synthesis. The synthesis method comprises that single-substance raw materials can be selected and weighed according to a chemical formula Bi2(Te<1-x>Se<x>)3 in which x is greater than or equivalent to 0.02 and lower than or equivalent to 0.1, metal antimony (Sb) in the weight percentage of 0.01% to 0.03% and nonmetal iodine (I) in the weight percentage of 0.03% to 0.06% are added on the basis of the weight obtained by weighing, and the purities of all the single-substance raw materials are greater than 4N; the materials are filled into a quartz tube whose bottom is relatively flat by sintering to implement vacuum-pumped tube sealing, and then filled into a rocking furnace of resistance heating, and the quartz tube is placed in a vertical position and then sintered by melt mixing synthesis. The quartz tube is cooled naturally to the room temperature after sintering, and then removed and placed in a melting furnace in a vertical zone for pulse zone melting. The bismuth telluride based N type thermoelectric material and the preparation method thereof have the advantages that the preparation method is simple, a high-density body material of a monocrystalline similar structure and including a few of inlaid nanometer crystal grains can be obtained, via measurement, the ZT value of the thermoelectric material Bi2(Te<1-x>Se<x>)3 can reach 1.33 during 340K, and the material can be applied to fields including waste heat recovery and space exploration.

Apparatus for performing Raman spectroscopy may include a first laser source having a first emission wavelength and a second laser source having a second emission wavelength. A separation between the first and second emission wavelengths may correspond to a width of a Raman band of a substance of interest. An optical switch may provide switching between the first and second laser sources. An ensemble of individually addressable laser emitters may be provided. A Bragg grating element may receive laser light from the ensemble. An optical system may direct light from the Bragg grating element into an optical fiber. A combined beam through the optical fiber may contain light from each of the emitters.

The invention discloses a bacillus amyloliquefaciens capable of degrading benzene compounds, wherein the 16S rDNA of the bacillus amyloliquefaciens has a sequence of SEQ ID No.1, the strain is pale orange red, round, smooth and humid with neat edges in a solid medium, and the diameter thereof of the strain is between 1 and 2 millimeters; the form of the bacillus amyloliquefaciens is a thicker bacilli and is about 10 micrometers in length; spores are formed and are oval; and the bacillus amyloliquefaciens is aerobic, gram-positive and contact oxidase negative, can use a BTEX mixture or a single substance as a unique carbon source, and can degrade the BTEX mixture efficiently.

Belonging to the technical field of luminescent materials, the invention in particular relates to a broad-band near-infrared emission luminescent substance, in particular to a material capable of generating red light and near-infrared emission in a range of 700nm-1600nm under the excitation of ultraviolet, purple light, blue light and red light, and further discloses a preparation method of the material and a luminescent device containing the luminescent material. The broad-band near-infrared emission luminescent substance includes an inorganic compound with a molecular formula of AaDbMcEdOe:xCr. The luminescent substance has a strictly occupied ordered structure, and the material is a single substance, adopts Cr as the optical active center, can well absorb ultraviolet light, blue light and red light, and under the excitation of ultraviolet or purple light or blue light, can realize broad-band red light and near-infrared emission in the range of 700nm-1600nm, and has shorter fluorescence lifetime.