145results about How to "Avoid desorption" patented technology

The invention relates to a full ceramic type covering fuel particle, a preparation method of the full ceramic type covering fuel particle and a fuel element prepared from the full ceramic type covering fuel particle. The full ceramic type covering fuel particle comprises a nuclear fuel core, a loose silicon carbide layer, a silicon carbide transition layer and a compact silicon carbide layer, wherein the loose silicon carbide layer, the silicon carbide transition layer and the compact silicon carbide layer sequentially cover the outside of the nuclear core. The full ceramic type fuel element is prepared by dispersing and distributing covering fuel particles in a silicon carbide substrate. When the fuel element provided by the invention is used, the problems of oxidation and corrosion of the existing covering fuel particles and the fuel element during air and water injection under the condition of reactor accidents can be solved. The fuel element can be used for the reactor types such as high-temperature air-cooled reactors, gas-cooled fast reactors, molten salt reactors, space reactors and pressurized water reactors.

The invention provides a high-accuracy liquid-phase dechlorinating agent. The dechlorinating agent is prepared from the following components in percentage by weight: 5-20 percent of CuO, 5-10 percent of CaO, 4-8 percent of KOH and the balance of modified activated carbon, wherein the modified activated carbon is activated carbon which is subjected to acidification and oxidation. According to the dechlorinating agent, the modified activated carbon is adopted as a carrier, the open-framework structure of the activated carbon can be optimized, the pore volume and specific surface area can be increased, the content of the oxygen-containing functional group on the surface of the activated carbon can be increased, the carrier polarity can be improved, the combination degree between the carrier and the active ingredient can be enhanced, loss of the active ingredient can be reduced, hydrogen chloride which is a polar molecule can be easily and stably adsorbed on the surface of the modified activated carbon having relatively large polarity, and the dechlorinating accuracy can be improved. Furthermore, the reaction activity of the dechlorinating agent and hydrogen chloride can be increased due to the synergistic effect of three active substances in the dechlorinating agent, and maximization of chlorine capacity of the dechlorinating agent can be effectively realized, so that the chlorine capacity of the liquid dechlorinating agent can be more than or equal to 16 percent, and the dechlorinating accuracy is lower than 0.5ppm.

The invention provides a preparation method of a sulfhydryl activated carbon mercury removal agent.The preparation method comprises the steps that activated carbon is modified by initiatively adopting sulfhydryl modification liquid prepared from mercaptoacetic acid, acetic anhydride and concentrated sulfuric acid, so that hydroxyl on the surface of the activated carbon reacts with mercaptoacetic acid to immobilize sulfhydryl to the activated carbon, and then sulfhydryl activated carbon is prepared.When mercury removal treatment is performed on mercury-containing gas or liquid by adopting the sulfhydryl activated carbon prepared through the preparation method, the sulfhydryl activated carbon shows the relatively high mercury removal precision and mercury penetration capacity, and therefore the sulfhydryl activated carbon prepared through the preparation method can be used as the mercury removal agent.

The invention discloses a preparation method of a nano Ru/C supported catalyst. The method comprises steps as follows: treated activated carbon is added to a ruthenium slat aqueous solution, stirring and dipping are performed for 0.5-4 h, then an alkaline compound aqueous solution is used for adjusting the pH of mixed slurry of activated carbon and ruthenium salt to 7-12, the mixed slurry is stirred continuously for 1-6 h, left to stand for 2-4 h and filtered, a filter cake is washed with water to be neutral and free of chloride ions and dried at the temperature of 80-120 DEG C for 4-12 h, and a treated Ru/C precursor is obtained; the treated Ru/C precursor is subjected to sectioned calcination in the inert atmosphere; a product after calcination is reduced, and then the nano Ru/C supported catalyst with high dispersion is obtained. The particle size of ruthenium particles of the catalyst is 1-4 nm. The method is low in production cost, has mild preparation conditions and causes few three industrial wastes, and the catalyst has advantages of long service life and the like.

The invention discloses a composite water-soluble temporary plugging agent for oilfield steering fracturing construction, wherein the composite water-soluble temporary plugging agent comprises the following raw materials by weight: 32.1-53.6 parts of a coating material, 17.9-29.8 parts of temporary plugging particles and 16.7-50.0 parts of temporary plugging fibers, wherein the coating material isselected from sodium polyacrylate, sodium carboxymethyl cellulose, bone glue and gelatin, the temporary plugging particles are selected from sea salt particles, potassium chloride particles, calciumcarbonate particles and calcium chloride particles, and the temporary plugging fibers are selected from polyvinyl alcohol fibers, polyester fibers, asbestos fibers and cotton fibers. According to theinvention, the composite water-soluble temporary plugging agent is suitable for plugging cracks with millimeter-scale crack widths, can resist a temperature of 120-140 DEG C, has a plugging pressure gradient peak value of more than 30 MPa/m, and can be completely dissolved into a clear liquid with a viscosity close to the viscosity of water within 2 h at 140 DEG C; and the composite water-solubletemporary plugging agent has characteristics of large plugging pressure gradient, short plugging removal time, no damage to stratum and the like.

A distributed feedback semiconductor laser comprises a first cladding layer, a first optical guide layer, an active layer, a second optical guide layer, an InP semiconductor layer, an InGaAsP semiconductor layer, and a second cladding layer. The first optical guide layer is provided on the first cladding layer. The active layer is provided on the first optical guide layer. The second optical guide layer is provided on the active layer and made of AlGaInAs semiconductor. The InP semiconductor layer is provided on the second optical guide layer. The InGaAsP semiconductor layer is provided on the InP semiconductor layer. The second cladding layer is provided on the InGaAsP semiconductor layer and made of InP semiconductor. A diffraction grating for the distributed feedback semiconductor laser includes the InGaAsP semiconductor layer and the second cladding layer.

The invention relates to organic silicone modified acrylate emulsion and a preparation method thereof. The organic silicone modified acrylate emulsion is synthesized through a hard monomer, a soft monomer, a cross-linking monomer, an organic silicone monomer and a reactive emulsification monomer under the action of an initiator at one time; the preparation method comprises the following steps: dissolving the initiator into deionized water; uniformly mixing the hard monomer, the soft monomer, the cross-linking monomer and the organic silicone monomer in a premixing tank; adding an emulsifier and deionized water into a four-mouth flask to be heated to 70-90 DEG C, slowly dropwise adding the uniformly-mixed monomer mixed phase and 90% of an initiator solution for 1-3 h at the temperature of 70-90 DEG C and the rotating speed of 200-400 r/min, carrying out heat preservation for 1-3 h at the temperature of 70-90 DEG C after dropping, meanwhile, dropwise adding 10% of the residual initiator solution, and adding ammonia water for adjusting the PH to 6-8 after cooling to 50 DEG C or below. The migration of the emulsifier in a latex film is avoided through application of the reactive emulsifier and the defects of hot sticking and cold shortness of the pure acrylic resin are overcome through organic silicone modification.

The invention discloses a production method of high-adsorptivity melt-blow non-woven fabrics. The production method comprises the production steps that (1), formaldehyde removal particles and activated carbon particles are stirred and mixed evenly according to the mass percent of (25-75%):(75%-25%) to obtain annexing agent materials; (2), macromolecule granules and an assisting agent of non-woven fabrics with the weight percent being 25:(0.4-1.6) are mixed and stirred evenly, melt spinning is carried out through a melt-blow method, the mixture is evenly mixed with the annexing agent materials in the step (1) before net formation, and the high-adsorptivity melt-blow non-woven fabrics are obtained by the utilization of air currents or mechanical net formation. The formaldehyde removal particles comprise potassium permanganate, platinum powder, manganese acetate, sodium hydroxide, activated aluminum oxide and titanium dioxide all of which the mass percent is 1:(0.01-0.05):(0.5-1.0):(1-2):(0.3-0.8):(1-3). The formaldehyde removal particles in the non-woven fabrics can capture target molecules and make contact with active constituent in the non-woven fabrics to generate the chemical adsorption reaction, and the formaldehyde removal rate is extremely high.

The prodn. steps are: 1) to do low-temp. oxygen plasma preprocessing to LSAT(111) substrate surface, 2) to deposit magnesium ultrathin layer in ultrahigh vacuum and low temp., 3) to do annealing process to magnesium ultrathin layer by increasing substrate temp. to make magnesium atoms moving and deabsorbing on LSAT (111) substrate, 4) to obtain ultrathin magnesium adsorption layer, thus to realize that ZnO film grows according to crystal lattice small mismatch and epitaxial orientation to produce atom grade smooth high-quality ZnOfilm with single O polarity and domain. The smooth ZnO film produced by the invention has high crystal quality and photoelectric performance.

The invention relates to a fluorine-silicon modified acrylate emulsion and a preparation method thereof. A hard monomer, a soft monomer, a cross-linking monomer, an organosilicon monomer, a fluorine-containing monomer and a responsive emulsification monomer are selected to realize one-time synthesis of the emulsion under the action of an initiator. The method comprises the following steps: dissolving the initiator in water, uniformly mixing the hard monomer, the soft monomer, the cross-linking monomer, the organosilicon monomer and the fluorine-containing monomer, heating an emulsifier and water in a four-neck flask to 70-90DEG C, slowly adding the above obtained uniformly-mixed monomer mixture phase and 90% of the above obtained initiator solution in a dropwise manner in 1-3h at 70-90DEG C under a rotating speed of 200-400r/min, maintaining the temperature unchanged in a range of 70-90DEG C for 1-3h after the dropwise addition ends, adding the remaining 10% of the initiator solution in a dropwise manner in the temperature maintaining process, cooling to 50DEG C or below, and adding ammonia water to adjust the pH value to 6.5-8. The fluorine-silicon modified acrylate emulsion integrates respective advantages of silicon and fluorine polymerse, and is suitable for dye migration resistance, water resistance, oil resistance, fouling resistance, fog resistance and self-cleaning function.

A manufacturing method of a liquid crystal display device including a liquid crystal layer sandwiched between a pair of opposed substrates and orientation films includes forming a first orientation film having straight-chain alkyl chains at the liquid crystal layer side of one substrate, and forming a second orientation film at the liquid crystal layer side of the other substrate by forming an inorganic orientation layer and surface-treating the inorganic orientation layer using a silane coupling agent, and forming the second orientation film includes surface-treating the inorganic orientation layer using a first silane coupling agent having straight-chain alkyl chains and surface-treating the layer using a second silane coupling agent having straight-chain alkyl chains and having only one hydrolytic group.

The invention discloses blue stone underlay handling method, using the P-MBE device to treat blue stone underlay by three steps. The method comprises the following steps: plasma treating the underlay at the low temperature, then depositing the lithium or magnesium at low temperature and ultra high vacuum, finally carrying out annealing treatment to get blue stone surface modified by lithium oxide or magnesium oxide. The method improves the crystallization quality of zinc oxide epitaxial film. The zinc oxide film made on the modification surface of blue stone possesses the good optical property and suits for high-performance opto-electronic device.

The invention relates to a preparation method of an inorganic heavy metal ion adsorption material, and belongs to the technical field of adsorption material preparation. The preparation method comprises the following steps: firstly, with fly ash as a raw material, preparing zeolite particles by an alkali dissolution-hydrothermal process; then, with the obtained zeolite particles as a carrier, mixing bread crumbs with glucose, egg white and water to obtain mixed slurry which serves as a nutrient solution; mixing the carrier and the nutrient solution with neurospora crassa, and fermenting; blending the fermentation filter residue with acetobacter aceti and wine, and performing secondary fermentation; finally, impregnating the secondary fermentation filter residue in alkali liquor, and naturally airing to obtain the inorganic heavy metal ion adsorption material. The heavy metal ion adsorption material prepared in the invention has the advantages of large adsorption capacity, perfect adsorbability, rare desorption and broad application prospect.

The invention relates to application of polyaninophenol as a precious metal adsorbent. Precious metal ions with a concentration of several mg/L to thousands of mg/L can be reduced to 0.1 ppm or below,the adsorption rate is 99.9% or above, and most of the adsorbed precious metal is at an elemental state rather than an ionic state, so that the recycling process path is shortened. The maximum adsorption capacity of the precious metal by polyaninophenol can reach 2000 mg/g which is twice or above the weight of the polyaninophenol. The polyaninophenol can be applied to recovery of gold in waste circuit boards, the adsorption rate of leached gold exceeds 99.96%, the concentration of residual gold after adsorption is performed is less than 0.1 mg/L, and almost all the gold in the solution is adsorbed. When the polyaninophenol is applied to recovery of gold in an electroplating waste liquid, 12 rounds of adsorption are performed, the concentration of the residual gold in each waste liquid obtained after each round of adsorption is performed is less than 0.1 mg/L, the adsorption rate is more than 99.82%, and almost all the gold in the solution is recycled completely; and compared with existing precious metal adsorbents, the adsorbent has obvious advantages in terms of minimum residual precious metal ion concentration, maximum adsorption capacity, a pH application range, a recovery process path and the like.

An ink-jet recording material having a support and at least one ink-receiving layer, the ink-receiving layer comprising at least one binder and a cationized fumed silica prepared by copolymerizing at least one cationic monomer and at least one non-cationic monomer monomer in the presence of a fumed silica. A cationized fumed silica prepared by polymerizing the monomers in the presence of a fumed silica and a method of preparing an ink-jet recording material are also disclosed.

The invention discloses a growth crucible and method capable of adjusting the atmosphere of a silicon carbide single crystal growth system. The growth crucible capable of adjusting the atmosphere of the silicon carbide single crystal growth system comprises a crucible main body; a raw material cavity positioned in the crucible main body and used for filling a growth raw material of a silicon carbide single crystal; a growth cavity positioned in the crucible main body, positioned above the raw material cavity and used for growing seed crystals to obtain silicon carbide single crystal; a gas dredging cavity located in the crucible body and located below the raw material cavity, wherein a gas dredging assembly is arranged in the gas dredging cavity and used for releasing halogen gas into theraw material cavity so as to adjust the atmosphere of a growth system of the silicon carbide single crystal. The halogen gas can be released into the growth atmosphere at the initial growth stage of the crystal, the purpose of consuming excessive silicon at the initial growth stage of the crystal is achieved, the chemical composition of the growth atmosphere of the silicon carbide single crystal is further adjusted, the quality of the silicon carbide single crystal is improved, and corrosion to a graphite crucible is reduced.

The invention relates to a preparation method for a polyhydroxyalkanoate grafted organic polyamine dispersant and application thereof. The dispersant is applied in a pesticide oil suspension. The dispersant has a chemical formula as described in the specification. In the chemical formula, P is an organic polyamine main chain; T is a residue O-R-CO or lactone of hydroxyl fatty acid; X is a modifier or an end capping agent which is a straight-chain or branched-chain and saturated or unsaturated residue with a fatty acid of C1 to C22; T and P are connected by an amido bond; X and T are connected by an ester group; m is an integer of 1 to 100; and n may be 0 or an integer of 1 to 100. The objective of the invention is to provide the preparation method for agricultural polyhydroxyalkanoate grafted organic amine dispersants; the dispersants have amino anchoring groups and solvated polyester chains; and with a special chemical structure, the dispersants have good dispersing and stabilizing effects in an environment-friendly oil suspension.

The invention belongs to the field of solar cells, and discloses a photo anode modifying method for improving stability of dye-sensitized solar cells. The method takes one-dimensional structured titanium dioxide nano-wire array synthesized by a hydrothermal method as a loading material; after dye absorption, the titanium dioxide surface is subjected to silanization treatment; and a uniform silanization protective layer is formed on the titanium dioxide nano-wire, so that the dye molecules are prevented from dropping from the interface so as to greatly improve the stability of the titanium dioxide photo anode. The method is simple to operate and high in compatibility; an optical and electrical test proves that the original photoelectric property of the photo anode can be still kept after the photo anode, which is processed by the method, is stored in the air for a long time; and therefore, the method can be widely applied to the surface modification of the dye-sensitized solar cells for improving the stability and prolonging the service life of the cells.