655results about How to "Reduce dissolution" patented technology

The invention relates to a Chinese medicinal snuff, aerosol containing the snuff and method for preparation, wherein the formulation includes astragalus root, Chinese angelica root, euphoria longan steud, dried orange peel, white atractylodes rhizome, poria cocos wolf each 5-35%, gen-seng, licorice root, banksia rose, dahurian angelica root, curcuma aromatica, patchouli (or/and centipeda), dried ginger, flower bud of lily magnolia eath 1-20%, menthol, musk, boneol, gum benzoin and camphor 0.1-10%.

The invention relates to a carbon supported catalyst for ozone oxidation, and a preparation method and a use thereof. The carbon supported catalyst is composed of an active carbon supported Fe, Cu, Ni or Mg transition metal active component and a Ce, La or K cocatalyst. The catalyst has a very high catalysis activity against non-degradable organic wastewater, allows the COD removal rate to reach above 55% and the biodegradability of the wastewater to be improved to above 0.30, has the advantages of long service life, simple preparation, no secondary pollution, containing of no precious metals, and low production cost, and is very suitable for the use in the industrialized production.

A negative type radiation sensitive resin composition comprising: (A) an alkali-soluble resin containing the polymerized unit of a polymerizable unsaturated compound having a phenolic hydroxyl group and having a weight average molecular weight of 4,100 to 20,000 and a weight average molecular weight/number average molecular weight ratio of more than 1.25 to not more than 2.00; (B) a radiation sensitive acid generating agent; and (C) an acid crosslinking agent. This composition can be used with an alkali developer having a normal concentration, can form a high-resolution rectangular line-and-space resist pattern, and provides a chemically amplified negative type resist which is free from a resist pattern defect (bridging or chip line) after development and has excellent sensitivity, developability and dimensional fidelity.

The invention discloses a granular filtering material for adsorbing and removing heavy metals in water and a preparation method thereof. The granular material consists of the following components in part by mass: 80-120 parts of an adsorbent, 7-14 pats of an additive and 0.5-3 parts of a binding agent, wherein the adsorbent consists of the following components in part by mass: 50-70 parts of coal ash and 30-50 parts of zeolite powder or sea-foam stone powder; the additive consists of the following components in part by mass: 5-7 parts of Mg-Al hydrotalcite, 2-6 parts of biochar and 0.5-1 part of magnesium Lignosulfonate; the binding agent is bentonite. The granular filtering material is prepared through the steps of adsorbent acid modification, biochar preparation, granulation and heat treatment process. According to the invention, the prepared granular filtering material is 3-6 mm in granule size, is large in adsorption capacity and excellent in adsorption effect and can effectively remove heavy metals in water, and no secondary pollutants are dissolved out, so that the granular filtering material can be applied to the treatment on heavy metal micro-polluted water and industrial waste water containing heavy metals, and has good economic and social benefits.

The invention discloses a preparation method of a nano oxide coated long-life lithium ion sieve adsorbent. The method comprises the steps of: 1. dissolving a nano oxide and crushed lithium ion sieve adsorbent powder respectively in a same solvent according to a mass ratio of 1-10:100, and conducting ultrasonic dispersion for 0.5-3h to obtain two solutions; 2. mixing the two solutions uniformly, adjusting the PH to 8-10 with ammonia water, evaporating the solvent to dryness under stirring, and grinding the material obtained by evaporation to obtain nano oxide coated adsorbent powder; and 3. blending the nano oxide coated adsorbent powder with a polymer containing organic solution, conducting stirring for 2-4h, then adding the obtained suspension into deionized water drop by drop, thus obtaining the uniform spherical granular adsorbent with a particle size of 1-5mm. The preparation method of the nano oxide coated long-life lithium ion sieve adsorbent provided by the invention can improve the service life of the lithium ion sieve adsorbent.

An anode composition for a lithium secondary battery is provided. The anode composition comprises an anode active material, a conductive material, and an acrylonitrile-acrylic acid copolymer with a high molecular weight as a binder. The acrylonitrile-acrylic acid copolymer has a molar ratio of acrylonitrile to acrylic acid of 1:0.01-2. Further provided are a method for preparing the anode composition and a lithium secondary battery using the anode composition. The binder has improved resistance to an electrolyte solution due to its enhanced adhesive strength. In addition, the use of the anode composition prevents the active material layer from being peeled off or separated from a current collector during charge and discharge to achieve improved capacity and cycle life characteristics of the battery.

The invention relates to a method for recovering nylon from a nylon-containing material by contacting the nylon-containing material with an alkanol-containing solvent at elevated temperature and at a pressure higher than the equilibrium pressure of the alkanol-containing solvent at the elevated temperature, thereby dissolving the nylon in the alkanol-containing solvent, removing the alkanol-containing solvent containing dissolved nylon from any undissolved solids, and decreasing the temperature of the alkanol-containing solvent containing dissolved nylon to precipitate the dissolved nylon.

The invention relates to an organic metal framework derived cobalt/nitrogen carbon nano material as well as a preparation method and application thereof. The preparation method comprises the followingspecific steps: (1) stirring and dissolving Co(NO3)<2>.6H2O in methanol to prepare a Co(NO3)2 solution; stirring and dissolving 2-methylimidazole in methanol to prepare a 2-methylimidazole solution;pouring the 2-methylimidazole solution into the Co(NO3)2 solution, standing and aging the mixture at room temperature, centrifuging the mixture, and washing and drying a product to obtain ZIF-67; and(2) carrying out annealing treatment on the ZIF-67 obtained in the step (1), and carrying out acid pickling, water washing and drying to obtain the cobalt/nitrogen carbon nano material. Compared withthe prior art, the cobalt/nitrogen carbon material prepared by the method has the advantages of low metal dissolution, good reusability, a simple and convenient operation process, a wide pH application range and the like when being used for activating peroxydisulfate, and has wide application prospects in the field of treatment of degradation-resistant organic matter wastewater.

The invention relates to an activated carbon loaded iron-cobalt oxide catalyst of which the components and content in weight percentage are that: 80.0 percent to 99.0 percent of activated carbon and 1.0 percent to 20.0 percent of iron-cobalt bi-metal oxide, wherein the cobalt and iron mole ratio is 1:1 to 1:19. The catalyst is integrated with ultrasonic wave and persulfate, and is used for treating organic wastewater. The catalyst and the persulfate are used for treating the organic wastewater with azo dye orange II as a target pollutant, and the decolorization rate reaches 74.5 percent within 30min; after the ultrasonic wave is added, the decolorization rate can be improved to 81.2 percent within 30min, and the total organic carbon (TOC) removal rate can reach 43.4 percent. The catalyst has the advantages of high catalytic efficiency and low metal ion dissolution rate. The catalyst is integrated with the ultrasonic wave and the activated persulfate to treat the organic pollutants in the wastewater, the treatment is carried out under milder conditions, the method is simple, the cost is low and the treatment effect is good.

The invention relates to a preparation method of mangiferin. The preparation method adopts the process steps of saturated limewater solution soaking and extraction, macroporous resin adsorption, stepwise elution of water and ethanol solution of different concentration, concentration and crystallization under reduced pressure, and recrystallization by adjusting acidity through methanol. The obtained product has the advantages of high purity, high yield and low cost. The process is easy to popularize and industrialize.

The invention relates to the technical field of lithium ion batteries, in particular to lithium ion battery electrolyte and a lithium ion battery using same; the electrolyte is prepared from lithium salt, a non-aqueous organic solvent and an additive, wherein the additive is prepared from fluoroethylene carbonate, nitrile compounds and a compound with a structure as shown in formula I; R1, R2, R3, R4 and R5 in the formula I are separately selected from hydrogen, an amide group and alkyl or alkoxy with a carbon number being 1-3; R1, R2, R3, R4 and R5 at least contain one amide group. Compared with the prior art, the lithium ion battery electrolyte is excellent in wetting effect and excellent in fast charge performance under a high-voltage condition by virtue of a synergistic effect generated by the fluoroethylene carbonate, the nitrile compounds and an amide pyridine compound with a structure as shown in formula I; moreover, the lithium ion battery electrolyte has the comprehensive performance of a long cycle life and a low high-temperature storage expansion rate.

The invention discloses an activated carbon supported cobalt oxide catalyst and application of the same in organic pollutant degradation. The weight ratio of cobalt element to activated carbon is 0.5-10%. When the activated carbon supported cobalt oxide catalyst and persulfate are used for treating organic wastewater containing azo dyestuffs orange II taken as a target pollutant, under the radiation of ultraviolet light, the decolorization rate reaches 86.0% within 30 minutes and 95.8% within 60 minutes, and the COD (chemical oxygen demand) removal rate reaches 38.5%, the cost is low and the treating effect is good. The activated carbon supported cobalt oxide catalyst disclosed by the invention has the advantages of high catalysis efficiency and low metal ion dissolution.

The invention discloses a solidifying agent for treating chromium-polluted soil, which comprises the following raw materials by weight: 40-65% of ground mineral slag, 10-20% of ground steel slag, 10-20% of meta-kaolin, 15-25% of an alkali-activator, 0-10% of pulverized coal ash, and 0-3% of ferrous chloride, wherein the free water contents of the raw materials are all not higher than 2%, and the above components are proportionally configured and uniformly mixed in a grinding machine. The product disclosed by the invention is used for solidifying chromium-polluted soil, and has both reducing property and gel property; and the dissolution rate of chromium in the solidified body is low and does not rebound with time, while the solidified body has high strength and good water resistance, and can be used for brickmaking and other building material purposes.

The invention discloses a positive electrode material used for lithium ion batteries. The positive electrode material comprises a main body material and an interface modification object on the surfaceof the main body material, wherein the main body material is a lithium-containing transition metal oxide LixMyN(1-y)O(2-alpha)A(beta); the interface modification object on the surface of the main body material is alkaline earth metal silicate DaR<b+>2(1-a)/bO.zSicT(1-c)O(2-lambda)E(zeta), wherein x is greater than or equal to 0.8 and smaller than or equal to 1.3, y is greater than or equal to 0.6and smaller than or equal to 1.0, alpha is greater than or equal to 0 and smaller than or equal to 0.2, beta is greater than or equal to 0 and smaller than or equal to 0.4, a is greater than or equalto 0.3 and smaller than or equal to 1.0, c is greater than or equal to 0.3 and smaller than or equal to 1.0, z is greater than or equal to 0.1 and smaller than or equal to 20, lambda is greater thanor equal to 0 and smaller than or equal to 0.5, zeta is greater than or equal to 0 and smaller than or equal to 0.5, and the numerical value of b is determined by the element variety and occupied position of R. The invention further discloses a preparation method of the positive electrode material used for lithium ion batteries. The positive electrode material used for lithium ion batteries disclosed by the invention solves the problems such as low high voltage tolerance, low cycle stability and low safety performance existing in an existing lithium ion battery.

The invention discloses high-voltage lithium ion battery electrolyte, a preparation method and application of electrolyte. The high-voltage lithium ion battery electrolyte comprises an organic solvent, conductive lithium salt and a functional additive, wherein the organic solvent is prepared from a cyclic carbonate solvent, a fluoro solvent and a linear carbonic ester solvent, the content of the fluoro solvent in the high-voltage lithium ion battery electrolyte is 0.1-40wt.%, the content of the functional additive is 0.01-5wt.%, and the concentration of the conductive lithium salt in the organic solvent is 0.8-1.5mol/L. According to the high-voltage lithium ion battery electrolyte, the interfacial property of the anode and the cathode of the battery and the electrolyte can be improved, and the stability of the electrolyte can be improved, so that the cycle life of the high-voltage lithium ion battery is prolonged, the high-temperature property of the high-voltage lithium ion battery is improved and the working voltage of the high-voltage lithium ion battery is increased to be above 4.5V.

The invention discloses a preparation method of a supported transition metal catalyst utilizing iron tailings as a carrier and a method for degrading organic pollutants. The supported transition metal catalyst utilizing iron tailings as the carrier is prepared by the following steps: preparing a mixed solution by utilizing iron tailings and a transition metal m salt (Co, Mn or Cu) as raw materials, and preparing the supported transition metal catalyst utilizing iron tailings as the carrier through an impregnation method. A proper amount of oxidant hydrogen peroxymonosulfate (PMS) and the supported transition metal catalyst disclosed by the invention are added into an organic pollutant solution to carry out a catalytic degradation reaction of organic pollutants. The supported transition metal catalyst utilizing iron tailings as the carrier disclosed by the invention is good in catalytic degradation effect of organic pollutants and high in degradation rate, the method is simple, the cost is low and the target of treating pollutants through wastes is achieved.

The invention provides a method for preparing a seaweed extracting solution and a rotation basket extracting device. The preparing method includes the steps that seaweed and activated carbon are thrown into a plurality of medicine baskets, and meanwhile solvent is added into a tank body; a motor is started, a center shaft is made to rotate, hence, the medicine baskets are driven to make centrifugal movement, and chemical substances included in the seaweed are extracted through the solvent; after extracting is completed, the extracting solution is discharged from a liquid medicine outlet; the extracting solution is settled through kieselguhr; supernate is collected, microfiltration is conducted through a ceramic membrane, permeate liquid is collected, and accordingly the seaweed extracting solution is obtained. The rotation basket extracting device comprises the tank body, the center shaft and the medicine baskets. The center shaft penetrates in the center of the tank body in a rotating mode, the medicine baskets are arranged on the center shaft, solvent inlets and a medicine change opening are formed in the top of the tank body, and the liquid medicine outlet is formed in the center of the bottom of the tank body. The method has the advantages of being simple in process, short in period, environmentally friendly and safe. The content of active substances of the prepared extracting solution is high, the number of varieties of active ingredients is large, and stability is achieved.

The invention relates to the technical field of water treatment, and especially relates to a preparation method of a modified alumina carrier, a catalytic ozone oxidation catalyst, and an application of the catalyst. The preparation method of the modified alumina carrier comprises the following steps: providing an alumina substrate; carrying out primary modifier spray immersion, primary drying and primary calcination on the alumina substrate, and naturally cooling the obtained calcined alumina substrate to room temperature; and carrying out secondary modifier spray immersion, secondary drying and secondary calcination on the alumina substrate, and naturally cooling the secondary calcined alumina substrate to obtain the modified alumina carrier. The catalytic ozone oxidation catalyst prepared from the modified alumina carrier greatly improves the COD removal rate, so the sewage treatment cost is reduced; the dissolution rate of metal ions is greatly reduced, so the service life of the catalyst is prolonged; and the catalyst has the advantages of low cost and simple preparation method, and is very suitable for industrial production.

Formulations of azole antifungals such as itraconazole and particularly formulations, co-formulations and compositions of itraconazole with one or more oligomeric and/or polymeric excipients are disclosed. Methods for preparation of the formulations, co-formulations and compositions include co-precipitating the two materials from a common solvent or solvent mixture using a compressed (typically supercritical or near-critical) fluid anti-solvent as in the GAS (Gas Anti-Solvent) precipitation method. The formulations, co-formulations, compositions, methods of making and methods of delivering, are useful as pharmaceutical compositions and in medical treatment by virtue of their at least parity, preferably improved or enhanced solubility or dissolution characteristics, resulting in at least parity, preferably improved or enhanced bioavailability and/or pharmacokinetics.