205results about How to "Low ion content" patented technology

A lithium-ion cell comprising: (A) a cathode comprising graphene as the cathode active material having a surface area to capture and store lithium thereon and wherein said graphene cathode is meso-porous having a specific surface area greater than 100 m²/g; (B) an anode comprising an anode active material for inserting and extracting lithium, wherein the anode active material is mixed with a conductive additive and/or a resin binder to form a porous electrode structure, or coated onto a current collector in a coating or thin film form; (C) a porous separator disposed between the anode and the cathode; (D) a lithium-containing electrolyte in physical contact with the two electrodes; and (E) a lithium source disposed in at least one of the two electrodes when the cell is made. This new Li-ion cell exhibits an unprecedentedly high energy density.

Process for production of acid and high temperature resistant cement composites, where the matrix is alkali activated F fly ash alone, F Fly ash combined with ground slag or ground slag alone. F-fly ash produces lower quality alkali activated cement systems. On the other hand the lack of calcium oxide results in very high resistance to medium and highly concentrated inorganic or organic acids. The high strength and low permeability of pure F-fly ash cement systems is achieved by using in the composition un-densified silica fume, the amorphous silicone dioxide obtained as by products in production of ferro-silicones. Precipitated nano-particle silica made from soluble silicates and nano-particle silica fume produced by burning silicon tetra chloride in the hydrogen stream.

Provided herein are, among other things, epoxy resin varnishes and methods of making and using the same. In some embodiments, the epoxy resin varnishes comprise at least a filler such as silica. In certain embodiments, the epoxy resin varnishes provided herein are used for making laminates such as copper clad laminates. In farther embodiments, the copper clad laminates provided herein are used for making printed circuit boards (PCBs).

The present invention relates to surface treatment of steel plate, and is especially zinc electroplating process to form homogeneous fine zinc layer onto the surface of cold rolled steel plate and environment friendly zirconium-containing no-chromium fingerprint resisting paint for producing zinc electroplating fingerprint resisting steel plate. Cold rolled steel plate is first electroplated with zinc and then coated with fingerprint resisting paint. The production process of fingerprint resisting steel plate features the production process including the first production of zinc electroplated steel plate via vertical anode electroplating process, coating with water-base fingerprint resisting paint with zirconium to replace chromium, and curing through roasting at temperature lower than 125 deg.c to form composite resin film. The electroplated zinc layer has stable and reliable quality and the organic composite resin film has no environmental pollution.

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

The present invention relates to antimicrobial oral compositions comprising a water-soluble zinc salt wherein a surfactant selected from alkali metal or ammonium salts of alkyl sulfoacetate, dialkyl sulfosuccinate, dialkyl sulfosuccinamate; and mixtures thereof; is used in an amount effective to reduce the astringency of the zinc salt.

The invention discloses an efficient and energy-saving xylose producing process, which comprises the following steps of: A, corncob hydrolysis; B, lime neutralization; C, cartridge filtration; D, continuous membrane decontamination; E, continuous membrane concentration; F, primary ion exchange; G, primary evaporation; H, activated carbon decoloration; I, secondary ion exchange; J, secondary evaporation; K, third-time evaporation; L, crystallization; M, centrifugation; N, drying; and O, finished product packaging. The process disclosed by the invention has the beneficial effects that impurities and pigment are removed by membrane separation and concentration, the usage amount of activated carbon is reduced, steam consumption is reduced, the pollution load of ion exchange resin is reduced, the regeneration period of the ion exchange resin is prolonged, the discharge of waste water of the producing process is reduced, the production efficiency is improved, and the production cost is reduced, so that the sustainable development ability of an enterprise is promoted.

The invention relates to a method for preparing high-purity vanadium pentoxide by use of a stone coal one-step method. The technical solution is as follows: a fluidized bed furnace for one-step roasting of stone coal is adopted to perform one-step fluidized bed roasting on the stone coal; roasted materials are leached in three segments, final pickling slurry is subjected to primary separation so as to obtain final pickle liquor, secondary overflow is returned to be subjected to primary size mixing, and tertiary overflow is returned to be subjected to secondary size mixing; the pH value of the final pickle liquor is regulated, and slags obtained after regulation are returned to a segment III so as to be leached; the regulated pickle liquor is crystallized to obtain a potassium alum byproduct; after crystallization, the liquid is subjected to reduction and precipitation-based impurity removal, and filter residues are dried to obtained a ferrous oxalate byproduct; after impurity removal, pH value regulation is performed on the liquid by use of weak acid salt, then counter-current extraction is performed on the liquid, and extraction raffinate is returned to be subjected to tertiary size mixing; after being washed, the loaded organic phase is subjected to countercurrent reverse extraction; a lean organic phase is regenerated and then is returned to be extracted; after a vanadium-rich solution is oxidized, urea is added, stirring is performed, the obtained molybdenum precipitation mother solution is returned to be subjected to primary size mixing, and ammonium polyorthovanadate is calcinated to prepare vanadium pentoxide. The method has the characteristics of short process flow, less pollution, low energy consumption, less chemical usage, high vanadium recovery rate and high product purity.

Described are methods for electrical treatment of biological cells, in particular using electrical field pulses, involving the steps: arrangement of the cells (1) on apertures (2) of a solid planar carrier element (3) which divides a measuring chamber (10) into two compartments (11, 12) ; and temporary formation of an electrical treatment field which permeates the cells, wherein an alternating-current impedance measurement takes place on the carrier element (3), and from the result of the alternating-current impedance measurement, a degree of coverage of the carrier element and/or healing of the cells after electrical treatment are/is acquired. Also described are devices for implementing the methods.

The invention discloses a preparation method of ultrapure isopropanol, which comprises the following steps: by using industrial isopropanol as a raw material, adding a metal ion complexing agent ethylene diamine tetraacetic acid disodium salt to form a charged chelate, moving charged corpuscles to positive and negative poles through an electrophoresis tank, removing impurity ions in the isopropanol respectively by anion and cation exchange resin exchange, dehydrating through a molecular sieve and a superstrong water-absorbing resin, filtering with a microfilter, carrying out multistage continuous rectification, and filtering with a nanofilter to obtain the target product ultrapure isopropanol. The main body content of the ultrapure isopropanol is higher than 99.80, the water content is lower than 10 ppm, the cation content is lower than 0.1 ppb, and the anion content is lower than 50 ppb. The product has the advantages of high purity, low content of metal impurities and stable quality; and the method has high operation continuity and is suitable for industrial production.

A method of treating petroleum-polluted clay foundation by using multiple microflora is capable of achieving integration of soil recovery and soil reinforcing construction. The method includes the steps of: (a) preparing a microbial agent (1); (b) uniformly stirring the microbial agent (1) with soil (3) in to-be-processed stratum with a deep stirring machine (2) according to the mass ratio of 1:100, and then leveling the field; (c) arranging injection pipes (4) in a row in the field according to hole distance of 0.8 m; (d) injecting a nutrient solution (5) into the to-be-processed stratum through the injection pipes (4) every three days; (e) arranging detection holes in the field according to density of one hole per 200 m<2>, and withdrawing soil pore liquid from the detection holes everysix days and performing oil content measurement, when the oil content of the soil reduces by more than 80%, alternately injecting the nutrient solution (5) and a cementing solution (6) into the to-be-processed stratum through the injection pipes (4); and (f) when preset injection times is reached, detecting foundation strength and heavy metal concentration of the soil, if the indices satisfy requirements, removing the injection pipes (4), or if not, repeating the step (e) until the requirements are satisfied.

The invention relates to a high-specific surface area functional active carbon material and electrode slurry preparation method and solves the problems of small specific gravity, difficulty in diffusion and the like of high-specific surface area active carbon material. The preparation method includes steps that (1) acid pickling; (2) surface treatment; (3) loading of oxygenic metal compound; (4) high-temperature oxidizing; (5) secondary loading of oxygenic metal compound; (6) slurry preparation. According to the high-specific surface area functional active carbon material and electrode slurry preparation method, the oxygenic metal compound is loaded to the surface of the active carbon material so that the specific gravity of the high-specific surface area functional active carbon material is improved, and the high-specific surface area functional active carbon material with high pore volume and aperture is obtained; the high-specific surface area functional active carbon material is easy to adsorb electrolytic solution, the infiltration effect is obviously improved, the preparation technique is simple, and the large scale production can be realized.

The invention relates to the field of food industries, and discloses a method for extracting starch from a jack fruit seed, which comprises the following steps: washing off outer pectin of a fresh jack fruit seed; adding water, mashing and grinding; adding serrapeptass into ground size mixture to perform enzymolysis for 3-5h; filtering enzymolysis liquid; centrifuging filtering liquid; cleaning the obtained sediments after the filtering liquid is centrifuged with water and 50-80% of edible alcohol sequentially; centrifuging after cleaning to obtain white sediments; drying and smashing the white sediments to obtain the starch. According to the invention, the jack fruit seed is adopted as raw material to extract starch resource in the jack fruit seed, a single enzyme enzymolysis method is used in the extraction method rather than strong base and strong acid; compared with the compound enzymic method, based on the saved extraction cost, the single enzyme enzymolysis cannot break starch structure, doesn't pollute the environment, is simple to operate, and low in cost; the edible alcohol used for cleaning starch can remove residual ions to the greatest extent, so as to improve the purity of the starch, and the method is suitable for starch large-scale production.

The invention discloses a calcium-poor and silicon-rich ecological cement and application thereof. The cement is prepared from a silicon-rich body and a calcium-rich body in a mixing mode. The silicon-rich body is obtained by adding a small amount of alkali metal salt into a wide-source silicon-aluminum material and then carrying out low-temperature calcination, and the calcium-rich body is composed of a raw material releasing Ca(OH)2 when hydrated and a raw material containing CaSO4. Compared with portland cement, the calcium-poor and silicon-rich ecological cement is good in early strength property, and the long-term strength can meet most use requirements; the raw materials of the calcium-poor and silicon-rich ecological cement are easy to obtain, and carbon emission, energy consumption, pollution and the like are substantially reduced; furthermore, a large quantity of solid industrial residues can be consumed, and the calcium-poor and silicon-rich ecological cement has important economic and social value.

The embodiment of the invention relates to a rare earth ore leaching agent. The rare earth ore leaching agent comprises ammonium thiosulfate, ammonium sulfate and ammonium chloride. Rare earth ions are exchanged and desorbed through NH4+ in the three kinds of ammonium salt; through the positive synergistic effect of the ammonium thiosulfate, the ammonium sulfate and the ammonium chloride, the rare earth ore leaching agent in the embodiment can improve the rare earth ion leaching efficiency and reduce the content of aluminum and iron impurity ions in leaching liquid; and in addition, the agent cost is low, and the rare earth ore leaching agent can be used for the development and utilization of semi-weathering ionic adsorption type rare earth ore. A rare earth leaching process in the embodiment is simple, the high leaching rate and the high selective leaching of the rare earth ions can be achieved, and the rare earth ore leaching agent and leaching process are suitable for industrial large-scale use.

The invention discloses a relay liquid state epoxy resin pouring sealant which comprises the following components: 15-25 parts of bisphenol A epoxy resin, 30-45 parts of bisphenol F epoxy resin, 0.5 part of pigment, 70-100 parts of spheroidal filler, 4-6 parts of curing agent, 0.5-2 parts of curing accelerator, and 1-3 parts of coupling reagent. The invention also discloses a preparation method of the relay liquid state epoxy resin pouring sealant. The relay liquid state epoxy resin pouring sealant has lower curing temperature, the curing temperature is around 110 DEG C, the curing speed is faster, the bonding strength is stronger, the percentage of concentration is lower, the ion content is lower, and the heat conducting property is good; the storage performance is more stable, and the storage life in a refrigerator at 2-8 DEG C is above six months; and the preparation technology is simple and environment-friendly, the cost is low and the application range is wide.

The invention discloses a method and a device for preparing ultrapure acetone. A target product, namely, the ultrapure acetone is obtained by treating industrial acetone with ion exchange resin, removing impurity ions, dehydrating and performing membrane filtration. The purity of the ultrapure acetone is 99.8 percent or higher, the water content is less than 0.1 percent, the impurity ion content of the target product is lower than an index value by detection, the number of particle impurities which are larger than 1.0 mu m is less than 10/ml and each index value is accordant with SEMI C1.2-96 standard. Compared with the prior art, the method of the invention has the advantages of low carbon, environmental protection and low cost; feed liquor is treated circularly, so that negative influence on the environment can be reduced; the used ion exchange resin and a molecular sieve can be recycled; and a cation exchange unit, an anion exchange unit, and a water content unit and a particle impurity unit, which are independent of and related to one another, are combined into an integrated device, so that the operation process is convenient, the product quality is stable and the device has industrialized production prospect.

The invention provides a non-woven fabric for manufacturing dust-free wiping paper. The non-woven fabric for manufacturing the dust-free wiping paper comprises a non-woven fabric containing cellulosic fibers, wherein the non-woven fabric is prepared by treating a treatment solution containing polyvinyl alcohol, water-borne polyacrylate and a water-borne isocyanate cross-linking agent. The provided non-woven fabric is firm, high in cleanliness and soft. The invention also provides a method for manufacturing the non-woven fabric. The manufacturing method comprises the following steps: preparing the treatment solution containing polyvinyl alcohol, water-borne polyacrylate and a water-borne isocyanate cross-linking agent; padding the non-woven fabric containing cellulosic fibers by adopting the treatment solution, and baking. The method is simple and low in cost.

The present invention relates to a method for treating copper or copper alloy surfaces for tight bonding to polymeric substrates, for example solder masks found in multilayer printed circuit boards. The substrate generally is a semiconductor-device, a lead frame or a printed circuit board.