249results about How to "Low activation temperature" patented technology

The invention discloses a preparation method of a sulfonic acid type waterborne polyurethane adhesive. The preparation materials of the sulfonic acid type waterborne polyurethane adhesive comprise the following components in percentage by weight: 75%-89% of polyalcohol, 8.5%-22% of diisocyanate, 0.06%-0.10% of cross-linking agent, 1.0%-3.0% of sulfonate hydrophilic chain extender, 0.08%-0.15% of diamine chain extender, and 0.02%-0.05% of organic tin catalyst, wherein the polyalcohol is polyester polyalcohol or polyether polyalcohol or a mixture of the polyester polyalcohol and the polyether polyalcohol; and the sulfonate hydrophilic chain extender is ethylenediamine-based sodium ethyl sulfonate or 1,2-dyhydroxyl-3-sodium propyl sulfonate. The sulfonic acid type waterborne polyurethane adhesive prepared by the preparation method disclosed by the invention has the characteristics of being high in solid content, low in lowest activation temperature and large in peel strength.

The invention discloses a waterborne plastic-absorbing glue and a preparing method thereof. The waterborne plastic-absorbing glue is prepared from, by weight, 40-60 parts of aromatic aqueous polyurethane dispersion, 40-60 parts of ethylene-vinyl acetate emulsion, 0-10 parts of tackifying resin, 0.05-0.5 part of antifoaming agent, 0.1-1 part of wetting agent, and 0.1-1 part of thickening agent. The plastic-absorbing glue has excellent heat-resistant performance, pickup rate, bordure performance, low-temperature viscosity stability, and low activation temperature. The preparing method comprises the steps of adding aqueous polyurethane dispersion and ethylene-vinyl acetate emulsion into a high-speed dispersing kettle, then adding the tackifying resin, wetting agent, and antifoaming agent in sequence under a stirring condition, and finally adding the thickening agent to adjust the mixture into suitable viscosity to obtain the waterborne vacuum plastic-absorbing glue. According to the waterborne plastic-absorbing glue and the preparing method thereof, it is not necessary to adjust the pH of the ethylene-vinyl acetate emulsion in advance, and thus preparation procedures of traditional plastic-absorbing glue are simplified, and deslagging risks in the preparing process are lowered.

The present invention is directed to flame retardant multicomponent articles. The multicomponent articles include a reactive, migratory agent which is present in at least a first component of the article. The reactive migratory agent is capable of migrating from the first component of the article into a different component of the article under flame conditions to react with an element of that second component to produce a flame retardant effect. Applications include fibers, yarns, nonwovens, carpets, other fibrous materials, films, coating and composites.

The invention relates to a method for efficiently preparing cotton based mesoporous activated carbon fiber. The method comprises a step (1) of washing cotton, placing the cotton in a hydrothermal reaction kettle, performing heating to 150-200 DEG C at the heating rate of 5-30 DEG C / min, performing hydrothermal carbonization, performing heat preservation for 1-3 hours and then performing cooling to room temperature; a step (2) of dipping carbonization materials obtained from the step (1) into activator solution, performing microwave-ultrasonic joint dipping for 5-30 minutes and then performing filtration, sending filtration materials to a microwave heating device, performing activation for 5-15 minutes at 250-350 DEG C and then stopping microwave output, and a step (3) of washing the activated materials to be neutral and performing drying to obtain the activated carbon fiber. According to the method, the characteristics of microwave inner heating and selective heating are fully utilized, the technological process is simple, the activation temperature is only 250-350 DEG C, the activation time is only 5-15 minutes, the mesoporous proportion of the activated carbon fiber of the product reaches 50-90%, and the adsorptive property is good.

The invention discloses a copper-based composite catalyst for gas-state zero valent mercury oxidation in the field of smoke control and a preparation method and the purpose thereof. The copper-based catalyst is a copper-based composite oxide catalyst and / or a copper-based composite halide catalyst. The catalyst can utilize oxygen and trace HCI existing in smoke to achieve high efficiency conversion of zero valent mercury (HgO) and divalent mercury (Hg2+) under low temperature in a wider temperature range (500-300 DEG C) and can even achieve high efficiency oxidation of simple substance mercury in smoke free of HCI. The catalyst is suitable for catalytic oxidation of mercury in fire coal smoke, and the product Hg2+ of oxidation can be easily dissolved in water and can be removed by other pollutant control devices. The catalyst is simple in preparation method, wide in suitable temperature range, high in oxidation efficiency, weak in dependency on CI in the smoke, good in stability and high in SO2 poisoning resistance and has good application prospects and economical benefits in the fire coal smoke mercury discharge control fields including power station boilers, industrial boilers, industrial kilns and the like.

The invention relates to a method for preparing activated carbon for a super capacitor with fruit shells as raw material and an application of the activated carbon. The method comprises the following steps: firstly carbonizing the fruit shells in a protective atmosphere, then crushing the carbonized material, mixing with an alkaline activator, heating up to 550-690 DEG C, and activating in the protective atmosphere; and washing the obtained activated material with water, removing impurities by using a mixed acid, then drying, heating up to 760-1000 DEG C, and removing functional groups of the activated carbon surface. The prepared activated carbon has the characteristics of low cost and high performance, the flatulence problem of the super capacitor can be effectively inhibited, and the cycle life of the super capacitor is extended.

The invention relates to a Zr-Co-Re thin film getter provided with a protection layer, and a preparation method thereof. The Zr-Co-Re thin film getter is composed of a getter layer and the protection layer; main components of the getter layer are Zr, Co, and one or more selected form rare earth elements La, Ce, Pr, and Nd; and main component of the protection layer is Ni. Pulsed laser deposition film plating is adopted, and deposition of the double-layer structured thin film getter containing the protection layer and the getter layer on texture monocrystalline silicon is carried out. The texture substrate is capable of increasing effective area of the getter thin film, and so that inspiratory flow rate and inspiratory capacity are increased. The surface of the getter layer is plated with a Ni protection layer; Ni is capable of realizing dissociation of hydrogen, and increasing absorption amount of hydrogen; and the Ni protection layer is capable of inhibiting absorption of oxygen and reducing activation temperature. Activation of the Zr-Co-Re thin film getter can be realized in roasting processes at a temperature of 180 to 350 DEG C; after roasting, the Zr-Co-Re thin film getter possesses excellent inspiration performance at room temperature, can be used for internal gas residue removing of high vacuum microelectronic devices.

The invention discloses a dimethyl ether catalyst and preparing method through hydrating hydration tolerance and carbon deposit resistance carbinol, which is characterized by the following: adding rare earth element La and Ce in the catalyst to improve catalyst hydration tolerance stable property, adding Ca, Mg, Na and K to improve carbon deposit resistance of catalyst.

The invention relates to a method for preparing activated carbon with a large specific surface area through rapid activation. The activated carbon with a large specific surface area is prepared through rapidly activating high-carbon raw materials, such as anthracite, petroleum coke and the like, by auxiliaries and alkali together. The method comprises the steps of uniformly mixing the high-carbon raw materials, the activating auxiliaries and KOH, so as to obtain an alkali-carbon mixture, and heating the alkali-carbon mixture under the protection of an inert atmosphere, so as to obtain an activation product; quickly cooling the activation product to room temperature under the protection of the inert atmosphere; washing the activation product with water, and drying, thereby preparing the activated carbon with a large specific surface area. According to the method, the activation temperature is low, the activation time is short, a relatively high yield of activated carbon with a large specific surface area is obtained under the condition of a lower alkali / carbon ratio, the utilization ratio of alkali, carbon and energy is increased, the production cost is reduced, and the pollution is reduced.

The invention discloses a method for regenerating a deactivated palladium catalyst on line in process of preparing ethylene glycol through coal. The whole regeneration process is performed in a conventional fixed bed reactor. The process comprises the following steps: respectively introducing water vapor to remove partial organic matters and inorganic matters attached to the surface of the catalyst at different temperatures, introducing N2 to dredge a carrier pore channel, introducing O2 to remove carbon deposit on the catalyst, oxidizing and dispersing the aggregated palladium in a reduced state, introducing H2 to reduce and re-disperse active ingredients, and regenerating the catalyst so as to basically restore the activity of the catalyst, wherein the performance of the catalyst is slightly lower than that of a fresh catalyst, and the catalyst can be continuously used for half a year. According to the regeneration method adopted by the invention, the catalyst does not need to be discharged out of the fixed bed, and the method is simple, economical and easy to operate and has significance in developing a technology of producing ethylene glycol through coal.

The invention discloses a rare earth element-doped BaZrO3-delta-based perovskite-type Ru-loading ammonia-synthesis catalyst and a preparation method thereof. The rare earth element-doped BaZrO3-delta-based perovskite-type Ru-loading ammonia-synthesis catalyst utilizes a rare earth element-doped BaZrO3-delta-based perovskite-type composite oxide as a carrier having a molecular formula of Ba1-xLnx+yZr1-yO3-delta and comprises Ru as an active component. A rare earth element doping amount is 1-20wt% of the total amount of the carrier. K2RuO4 is utilized as a precursor of the active component and is directly dipped into the carrier, wherein the Ru loading amount is 0.5-10wt% of the carrier amount. The preparation method has simple processes, adopts simple equipment, does not need an auxiliary agent, and has a low precious metal use amount. The rare earth element-doped BaZrO3-delta-based perovskite-type Ru-loading ammonia-synthesis catalyst has good low-temperature low-pressure activity and high stability.

The invention discloses a catalyst for synthesizing methyl mercaptan and a preparation method of the catalyst. The catalyst comprises a carrier, an active component and an assistant, wherein the carrier is gamma-Al2O3, the active component is one or more of Fe2O3, MoO3, ZnO and NiO, and the assistant is alkali metal oxide or alkaline earth metal oxide. The catalyst is prepared as follows: impregnating a precursor of the assistant on the carrier by using a secondary equivalent-volume impregnation method, loading the precursor containing the active component by using the impregnation method again after roasting for one time, and obtaining a target product namely the catalyst for synthesizing the methyl mercaptan after the secondary roasting. According to the catalyst provided by the invention, methyl alcohol and sulfuretted hydrogen are used as raw materials to synthesize the methyl mercaptan, the selectivity of the catalyst is good, the active temperature of the catalyst is lower than that of the prior art, the reaction temperature is between 230-260 DEG C, the yield of the methyl mercaptan is more than 90%, in addition, no dimethyl sulfide is produced in the target product, so that subsequent separation is not needed.

The invention provides petroleum coke based activated carbon, a preparation method therefor and use thereof. The petroleum coke based activated carbon has the following characteristics that the specific surface area calculated by the BET method is 1,700-2,500m<2> / g, the ratio of mesopores with the pore size of 2-50nm accounts for 20-40% of whole pores, the average particle diameter is 5-20 microns, the total content of surface oxygen-containing functional groups tested by the Boehm titration method is lower than 0.1mmol / g, the content of contained total heavy-metal impurities is lower than 100ppm, and the content of anions is lower than 50ppm. The petroleum coke based activated carbon has a high specific surface area, reasonable pore size distribution, low impurity content and high specific capacity and can be applied to supercapacitors.

In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system of an engine, one mode is executed based on satisfaction of an execution condition for each mode, from among a plurality of control modes. The control modes includes a purification control mode in which an addition amount of NH3 or an additive serving as a generating source of the NH3 is determined according to a predetermined parameter associated with an amount of NOx in the exhaust gas, and a storage control mode in which the addition amount is set to be larger than that in the purification control mode. When a rotation speed of an output shaft of the engine is determined to be decelerated from a higher speed state than an allowable level, the execution condition of the storage control mode is satisfied after a predetermined dissatisfaction time period from start of the deceleration.

The present invention belongs to the technical field of zeolite molecular sieves, and in particular relates to a synthesis method of SSZ-13 zeolite. The method comprises the steps: performing hydrothermal reaction on a mixture of alkali metal or an alkaline earth metal source, an oxide source of a trivalent element, an oxide source of a tetravalent element, water and a structural guiding agent, to obtain an SSZ-13 zeolite crystal, cooling, filtering, and washing with water to obtain SSZ-13 zeolite. The structural guiding agent used in the invention has the advantages of low toxicity, low cost, wide range of Si / Al ratio of a synthetic product, low activation temperature, and easiness in industrialization compared with other known structural guiding agents. The SSZ-13 zeolite prepared in the invention shows a high catalytic conversion rate in catalytic removal reaction of nitrogen oxides when being used as a catalyst.

The invention discloses a nitrogen doped porous active carbon material, which is prepared by burning a carbon precursor prepared from sago cycas, a nitrogen source, and an alkaline inorganic substance. The specific surface of the material is in a range of 1136 to 2628 m<2> / g, and the average aperture is in a range of 1.17 to 2.11 nm. The preparation method comprises the following steps: step one, washing the leaves of sago cycas by water, drying the leaves, grinding the leaves, and burning the leaves to obtain a carbon precursor; step two, mixing the carbon precursor, the nitrogen source, and the alkaline inorganic substance, soaking, drying, burning, and carrying out activation to obtain a nitrogen doped porous active carbon material; and step three, soaking the nitrogen doped porous active carbon material in an acid solution, washing, filtering, drying, and grinding to obtain the final nitrogen doped porous active carbon material. When the material is used as the electrode material of a super capacitor, and if the current density is 1 A g<-1>, the specific capacitance is in a range of 266 to 351 F g<-1>. Leaves of sago cycas are taken as the raw materials, the application range is enlarged; and the material has a wide application prospect in the fields of porous materials and super capacitor.

A polymerization process to prepare polyolefin-clay nanocomposites from modified clay is described. Polystyrene-clay nanocomposites formed using the inventive method are highly exfoliated and show improved physical properties relative to polystyrene polymers. The process can be applied to bulk or suspension polymerization. The process provided is a two stage polymerization of monomer in the presence of a modified clay. In a first stage, monomer is polymerized within a clay gallery by an intercalated free radical initiator which is activated at a first polymerization temperature. In a second stage, monomer extrinsic to the clay is polymerized using an oil soluble free radical initiator which is activated at a second polymerization temperature.

The invention discloses an automobile exhaust soot particle trapping burner. The automobile exhaust soot particle trapping burner comprises a shell, a cellular carrier and a three-way catalyst. The shell is filled with the cellular carrier. The three-way catalyst is attached to the carrier and prepared through a method which includes the steps that water-soluble copper salt, water-soluble manganese salt, water-soluble sylvite, water-soluble cerium salt and water-soluble zircon salt are taken and are then dissolved in water, citric acid and polyethylene glycol are added, the water is removed through evaporation after the water-soluble copper salt, the water-soluble manganese salt, the water-soluble sylvite, the water-soluble cerium salt and the water-soluble zircon salt are completely dissolved to obtain gel, and the gel is dried and roasted to obtain the three-way catalyst. The automobile exhaust soot particle trapping burner has a low activation temperature, can be externally connected to the tail end of an automobile exhaust pipeline to trap and burn soot, can remove 80%-95% of soot, 70%-90% of CO, 80%-90% of HC and 50%-70% of NOx at the early use stage, and is easy and convenient to install; the automobile exhaust soot particle trapping burner can still work after an automobile runs for twenty thousand to thirty thousand kilometers, and the cost of the automobile exhaust soot particle trapping burner is far lower than that of an existing three-way catalytic converter.

The invention relates to an adsorption purification method for hydrocarbon stream, which is mainly used for solving the problems of low adsorption capacity of adsorbent, need of frequent regeneration and high regeneration temperature in the existing adsorption purification method. The method can better solve the problems by adopting the technical scheme of leading hydrocarbon raw material containing a certain amount of oxygen-containing compound impurities to be in contact with the solid compound adsorbent containing metal halide, wherein the adsorbent comprises halide or sulfate of at least one metal selected from alkali metals or alkaline-earth metals and at least one molecular sieve selected from A type, Y type, L type, mordenite, ZSM type zeolite or beta type molecular sieve, and be used for the adsorption purification industrial production of various types of hydrocarbon stream.

The invention discloses modified activated coke, and a preparation method and application thereof. The modified activated coke provided by the invention is the activated coke loaded with a modifier, and the modifier is at least one of bromide salt, bromate, iodate, chloride salt, and chlorate. The modified activated coke has strong capacity of adsorbing mercury, and has the demercuration efficiency in flue gas more than 95 percent. The invention utilizes the prior coal resources at home to prepare the modified activated coke with high performance, low cost and simple process, and achieves ideal effect when used for the demercuration in the flue gas. The invention contributes to solving the problems that the prior active carbon has high manufacturing cost and the prior activated coke has low demercuration efficiency, and has great economic value and social significance.

The invention relates to a subcritical or supercritical activation method for coal gangue. According to the method, alkali as an auxiliary is added to the coal gangue and the coal gangue is subjectedto an activating reaction under the subcritical or supercritical condition, and an activated coal gangue sample can be obtained. The invention further relates to a comprehensive utilization method ofthe coal gangue. According to the comprehensive utilization method, the activated coal gangue sample obtained by subcritical or supercritical activation is subjected to a contact reaction with acid, by means of acid leaching, not only can an aluminum oxide product and a white carbon black product be obtained, but also lithium and gallium which are enriched in the coal gangue can be extracted, final filter residues are used for preparing raw materials of cement, and one zero-pollution and zero-emission way of coal gangue waste recovery is really obtained. The methods have the advantages as follows: coal gangue can be activated at the low temperature of about 400 DEG C, few operation steps are required, reaction temperature is low, reaction time is short, no secondary pollution is produced in the whole process, and the novel environment-friendly coal gangue activation method and the way of coal gangue waste recovery are obtained.

In an addition-amount controller for an exhaust gas purifying agent to be used for an exhaust emission control system, a catalyst has properties of storing NH3 and further decreasing the critical reaction temperature as an amount of NH3 storage at the catalyst is increased. In the addition-amount controller, a present NH3 storage amount that is a storage amount of NH3 of the catalyst is detected at a detection time, the NH3 storage amount of the catalyst is changed by controlling an addition amount by an addition valve, and the NH3 storage amount of the catalyst is controlled to a target NH3 storage amount based on the detected present NH3 storage amount.

The invention discloses a non-evaporable low-temperature activated zirconium getter film and a preparation method thereof. The non-evaporable low-temperature activated zirconium getter film comprises an adjusting layer, a gettering layer and a protecting layer which grow on a rough monocrystalline silicon wafer sequentially, wherein in terms of chemical composition, the gettering layer contains 75%-77% by mass of zirconium, 18%-22% by mass of cobalt, 2%-5% by mass of yttrium and the balance of other inevitable impurities; in terms of a microstructure, the gettering layer is formed by densely arranged columnar grains, and the height of columnar tissue is 100-300 nm. The prepared getter film has the advantages of being environment-friendly, high in gettering capacity, low in activation temperature, high in adhesion force, long in service life, easy to prepare, low in cost and the like and is applicable to packaging of mini vacuum devices in the industrial field of microelectronics.

The invention relates to a solid adsorbent and a preparation method thereof, mainly solving the problems of low adsorption capacity and higher regeneration temperature of the adsorbent in the prior art. By adopting the technical scheme that a compound solid adsorbent is prepared by combining at least one kind of halide of alkali metal, halide of alkaline earth metal or metal sulfates with a molecular sieve, the invention better solves the problems and can be used for industrial production of adsorption and purification of various hydrocarbon raw materials.

The invention discloses a TiZrVHf quaternary getter thin film. The TiZrVHf quaternary getter thin film comprises four elements, namely, Ti, Zr, V and Hf, and the atomic number ratio is (0.9-1.1): (0.9-1.1): (0.9-1.1): (0.9-1.1): (0.9-1.1). The TiZrVHf quaternary getter thin film comprises a compact layer and a prismatic layer, wherein the compact layer and the prismatic layer sequentially grow inthe inner wall of a substrate pipe. The compact layer is a thin film, has a flat surface, and has no obvious grain structure under an electron microscope. The prismatic layer is a thin film has a rough surface, and has a obvious grain structure under the electron microscope. The prismatic layer has a large surface area and a large suction area, so that the suction rate per unit area of the substrate pipeline increases significantly. The TiZrVHf quaternary getter thin film belongs to the technical field of getter thin films. The TiZrVHf quaternary getter film can be activated at low temperature, strong adhesion and long service life are achieved, the vacuum degree of a particle accelerator is effectively improved, and the secondary electron emission coefficient is reduced.

The invention provides a method for preparing active carbon fibers with high specific surface area and abundant surface functional groups by utilizing hydrogen peroxide intensified water vapor to activate. The method comprises the following steps: heating polymer fibers or pre-oxidation polymer fibers in an inert atmosphere for 800-950 DEG C; and introducing the water vapor containing hydrogen peroxide to activate to prepare the active carbon fibers with the high specific surface area and the abundant surface functional groups. The method has the characteristics of simple preparation process, less environment pollution, low energy consumption and the like, and has a higher actual application value.

The invention relates to a getter alloy, a non-evaporable type low-temperature activating zirconium-based getter alloy and a preparation process thereof. The getter alloy comprises, by mass, 75-77% of zirconium, 17-19% of cobalt, 6%-7% of lanthanide series rear earth and 0%-0.5% of other inevitable impurities, and the lanthanide series rear earth comprises, by mass, 60%+ / -5% of lanthanum, 30%+ / -3% of neodymium and 10%+ / -1% of other lanthanide series elements. The getter alloy has the advantages of low-temperature activating, simultaneously, the hydrogen gettering ability of the getter alloy is higher than that of traditional zirconium-based getters, and the low activation temperature and the high gettering performance are guaranteed.