622results about How to "Reactive" patented technology

The invention relates to a catalyst used for catalyzing and dehydrogenation of low-carbon alkane and the method of producing propylene by alkane catalyzing and dehydrogenation with the catalyst. The former catalyst used for catalyzing and dehydrogenation of low-carbon alkane, each molecule of the hydrocarbon has about 2 to 8 carbon atom, which is characterized in that: the catalyst makes a molecular sieve the carrier, the Pt family metal is loaded on the carrier as the active component, makes the IVA family metal element and alkalinity metal element as additional agent and high temperature standing inorganic oxide as connection agent; when the catalyst is used in producing propylene by alkane catalyzing and dehydrogenation, the reaction temperature is 500 to 700 DEG C., the pressure is 0 to 0.2Mpa, the quality air speed is 2 to 5h to 1, the regenerating temperature of the catalyst is 500 to 700 DEG C., the air speed is 100 to 1000h to 1, the pressure is 0 to 1.0MPa. With adopting the invention, the reaction of producing propylene by alkane catalyzing and dehydrogenation is good, the average transforming rate is 30 per cent, the selectivity above 95 per cent can keep for 50 days.

The present invention is method of raising solid content in catalytic cracking catalyst slurry. The method includes mixing clay, molecular sieve slurry, aluminum-containing binder, pseudo boehmite and inorganic acid to form catalyst slurry and the subsequent spray drying. It features that the addition of inorganic acid before adding pseudo boehmite and the molecular sieve, and the addition of inorganic acid after adding kaolin and aluminum-containing binder or into the aluminum-containing binder. The present invention can raise the solid content in catalyst slurry to over 40 % to short the colloid forming time greatly, raise the catalyst producing efficiency and lower catalyst producing cost while ensuring the wear strength of catalyst. At the same time, the catalyst has great pore volume, high micro reaction activity and improved comprehensive reaction performance.

The invention relates to an ecological dyeing method for dyeing a cotton fabric with mulberry red natural dye, comprising the following steps: preprocessing the cotton fabric and then dyeing the preprocessed cotton fabric with the mulberry red natural dye; adding metal salt for fixation; and soaping the fabric after fixation and then fixing colors to obtain the dyed fabric with even color, wherein washing fastness can reach 3-4degrees. The ecological dyeing method has simple dyeing process, high dye-uptake, good pigment stability and wide market prospect.

A catalyst for Fischer-Tropsch synthesis consists of Co 10.0-80.0 wt%, zirconia 15.0-85.0 wt% and other metal oxide 0-5.0 wt%, and is prepared by the codeposition process or soaking process. The catalyst has excellent stability, high reduction degree and high metal dispersivity.

The invention discloses a preparation method of a metal organic skeleton MIL-101(Cr)@S/graphene composite material as the cathode material of a lithium sulfur battery. The preparation method comprises the following steps of: evenly loading sulfur into a three-dimensional pore channel of MIL-101(Cr) by a melting diffusing method, and mixing with graphene, so that the MIL-101(Cr)@S/graphene composite material can be prepared. The metal organic skeleton crystal material in the composite material is has superhigh specific surface area and pore volume and has a skeleton structure which has medium-mirco double pores, so that the dual effects of dispersing and fixing the sulfur grains can be played, and the whole electrical conductivity of the composite material can be improved due to graphene, so that the polarization of the material can be weakened, the discharge multiplying power performance can be improved, the coulomb efficiency can be improved and the like. The electrochemical performance test shows that the discharge specific capacity of the MIL-101(Cr)@S/graphene composite material prepared by the method can reach 1087mAh/g under the condition that the multiplying power is less than 0.1C, and the discharge specific capacity of the MIL-101(Cr)@S/graphene composite material prepared by the method is respectively kept at 807 and 387mAh/g under the condition that the multiplying power is 0.8C and 2.4C when the circulation times is 116 and 150. The preparation method has the advantages that the preparation method has the characteristics of being simple in process, convenient to operate, good in material performance and the like, and is suitable for large-scale industrial production.

The invention discloses a preparation method for activated carbon special for the removal of low-concentration formaldehyde in a room. The preparation method is characterized by comprising the following steps of pre-treating commercial activated carbon serving as a raw material, and performing modification, washing, filtering and drying to prepare an activated carbon material for removing the formaldehyde at room temperature. The obtained modified activated carbon is high in low-concentration formaldehyde removal efficiency, low in cost and easy to operate; when the concentration of the formaldehyde is 20ppm, 85 to 95 percent of formaldehyde can be adsorbed by the material.

The invention discloses a polyimide/oligomeric silsesquioxane nano-hybrid film with low dielectric constant, which consists of diacid anhydride monomers, diamine monomers and oligomeric silsesquioxane, wherein, the mass content of the oligomeric silsesquioxane is 0.1%-30%, and the mol ratio of the diamine monomers to the diacid anhydride monomers is 1:1-1.1. The polyimide/oligomeric silsesquioxane nano-hybrid film has the advantages of low dielectric constant and maintaining the original excellent properties of the polyimide matrix resin. The preparation method of the invention can obviously improve the miscibility among the oligomeric silsesquioxane, the reactant and the polymer matrix, which causes the oligomeric silsesquioxane to be easily and evenly dispersed in the polyimide resin by nano size to obtain organic-inorganic hybrid materials with excellent comprehensive properties; and the polyimide/oligomeric silsesquioxane nano-hybrid film has wide application prospect in the aspects of electrical engineering, electron, information, military, aeronautics, astronautics, etc.

The invention discloses a nitrile resin monomer, a nitrile resin polymer and a preparation method of the nitrile resin monomer and the nitrile resin polymer, belonging to the technical field of organic polymer materials. The nitrile resin monomer is a tetraphthalonitrile resin monomer containing benzoxazine cycle, and the nitrile resin polymer is a product obtained by heating polymerization of the nitrile resin monomer. The nitrile resin monomer has a low viscosity, a good mobility and the processing performances of low-temperature curing and the like at a low temperature. The nitrile resin polymer has the good curing performances of self-flame resistance, adhesion, heat stability and the like. The resin monomer has the good processing performances of benzoxazine resins, and the resin polymer has the high-temperature resistance of nitrile resins, thus reducing the curing processing temperature and being capable of being used in a high-temperature temperature, namely, having the advantages of low temperature processing, medium temperature formation and high temperature use; and the resin monomer and the resin polymer can be used in the fields of coatings, adhesives, electronic packaging materials, aeronautics, astronautics, ships, resin matrix composites and the like. The preparation method is simple and easy to control, low in reaction temperature, energy-saving, and suitable for industrialized production.

The invention belongs to the technical field of iron-making and specifically relates to hot briquetted iron coke for iron-making and a preparation method thereof. The hot briquetted iron coke is composed of the following raw materials in percentage by mass: 10%-30% of iron ore powder, 60%-80% of pulverized soft coal and 10%-20% of pulverized blind coal. The preparation method comprises the following steps: thoroughly and evenly mixing the raw materials to obtain a mixture, heating the mixture in a heating furnace to 200-350 DEG C, performing instant hot briquetting on the mixture to obtain a hot briquetted iron coke green ball, putting the hot briquetted iron coke green ball in a tunnel kiln and performing high-temperature destructive distillation and carbonization at a certain temperature increased previously at a certain rate, and then taking out the braised material for cooling, thereby obtaining the hot briquetted iron coke. The prepared hot briquetted iron coke has excellent compressive strength, abrasive resistance, reactivity and post-reaction strength; the hot briquetted iron coke is used for blast furnace iron-making instead of partial coke, and therefore, the adaptability of blast furnace iron-making to fuels is improved. The preparation method of the hot briquetted iron coke is wide in raw material source, low in production cost, simple in process flow and free from the use of a binder, and has wide industrial application prospect.

The invention relates to a process for preparing ethylene glycol by ethylene oxide catalytic hydration, wherein the solid acid catalyst employs niobium compounds as the main active components, at least one of germanium, tin, lead, antimony, phosphor, sulfur, ferrum and cobalt is used as the auxiliary agent for preparing ethylene alcohol at rather low water ratio conditions, the thermal energy needed for processing reacting excess water can be reduced substantially, the catalyst used possesses not only good activity, selectivity, but also fine steadiness.

The invention relates to polymer modified asphalt and a preparation method thereof. The modified asphalt consists of base asphalt, maleic anhydride grafted ethylene-vinyl acetate copolymer (M-EVA), styrene-butadiene rubber (SBR) and a tackifier. The preparation method comprises the following steps: heating the base asphalt to completely smelt; and then, slowly adding the maleic anhydride grafted ethylene-vinyl acetate copolymer (M-EVA) modifying agent into the base asphalt by stirring; and cutting and blending the mixture at high speed to prepared the polymer modified asphalt. When the maleic anhydride grafted ethylene-vinyl acetate copolymer (M-EVA) is used for the modified asphalt, a maleic anhydride group reacts with functional groups in the asphalt, so that the polymer and the asphalt perform crosslink to a certain extent, compatibility of the ethylene-vinyl acetate copolymer (EVA) and the asphalt can be improved, the high and low temperature performance of the asphalt is improved, and the polymer modified asphalt is a perfect material for road.

The invention relates to a functional admixture used for early tensioning prestressed structural concrete. The functional admixture comprises the following materials in percent by weight: 5%-95% of carbonate stone powder and mineral admixture; the carbonate stone powder is obtained by processing carbonate ores through processes such as breaking and fine grinding. A preparation process comprises the following steps of: grinding the carbonate ores into fine powder, and uniformly mixing with other mineral powders according to the proportion to obtain the functional admixture. The prepared functional admixture is applied in preparation of cast-in-situ beam concrete; the concrete capable of meeting fast tensioning requirement can be prepared under the premise without increasing the design strength of the concrete; and the problems that the conventional in-cast-situ beam concrete is long in prestressed age and long in construction period are solved.

The invention relates to a multicomponent three-dimensional organism printing device and method based on multi-channel nozzle. The device comprises a multi-channel nozzle which is located on a three axis stepper motor. The multi-channel mozzle is made of multiple nozzles arranged in parallel. One end of all micro-channels is aligned to form the nozzle, and the other end is connected with all liquid storage containers through Teflon pipes. All liquid drive devices are connected with all the liquid storage containers to drive the liquid in the liquid storage containers. A terminal control system controls the three axis stepper motor, all the liquid drive devices and temperature control devices to make the multi-channel nozzle move correspondingly and eject ink, thus achieving the three dimensional printing on a temperature control substrate. The device can precisely adjust the proportion of different ink types through controlling the ink feeding speed of all the channels. The printed artificial tissues and cells are more close to the actual tissues or organs, thus making the device have a broader application prospect compared with the prior art of tissue engineering.

The invention relates to a catalyst and method of the reaction for preparing butanedioic anhydride from maleic anhydride through liquid phase hydrogenation. The problems that in the prior art, the Pd loss rate is high and the maleic anhydride conversion rate and butanedioic anhydride selectivity are low are mainly solved. The catalyst is prepared through a dipping method, carriers or carriers with active auxiliaries are formed into strip-shaped, spherical or special-shaped particles through forming auxiliaries, Pd is the active ingredient, the problems are well solved through the technical scheme of the method for spraying a solution with Pd metal compounds on the forming particle carriers through the dipping method, and the catalyst and the method can be used for the reaction for preparing butanedioic anhydride from maleic anhydride through liquid phase hydrogenation.

The invention provides a vanadium-doped silicon oxide-based mesoporous molecular sieve catalyst, as well as a preparation method and application thereof. According to the catalyst, a pure silicon mesoporous molecular sieve KIT-6 is taken as a carrier, vanadium oxide is taken as an active ingredient, and is doped into a framework of the pure silicon mesoporous molecular sieve KIT-6, and the molar ratio of V to Si is 0.1:100 to 8:100. The invention further provides the preparation method for the catalyst and the application of the catalyst to selective oxidative dehydrogenation of propane for production of olefin. According to the vanadium-doped silicon oxide-based mesoporous molecular sieve catalyst, the dispersity of the active ingredient vanadium is higher, the concentration of an active site is higher, and the stability of the active site is higher, so that the catalytic activity of the catalyst is higher. When the catalyst is applied to reaction of selective oxidative dehydrogenation of the propane for production of the olefin, the molar recovery rates of products propene and olefin of selective oxidation reaction of the propane can reach 35.6 percent and 38.6 percent respectively.

The invention discloses an epoxy resin composition for a printed circuit copper-clad plate, which consists of the following components in part by weight: 130 to 140 parts of butane solution containing modified epoxy resin, 60 to 70 parts of composite phenolic aldehyde curing agent or 4.5 to 6.5 parts of dicyandiamide curing agent, 0.02 to 0.04 part of curing catalyst, 30 to 40 parts of solvent and 25 to 30 parts of filler, wherein the butane solution containing the modified epoxy resin is prepared by modifying bis-functional epoxy resin, brominated bisphenol epoxy resin, multi-functional novolac epoxy resin and linear novolac epoxy resin. The epoxy resin composition has the characteristics of low viscosity, easy impregnation, convenient operation, good reactivity and high Tg; and the printed circuit copper-clad plate made of the epoxy resin composition has good reliability and workability, excellent heat resistance and Z-axis thermal expansion coefficient and other comprehensive performance.

The invention discloses a multi-robot cooperation positioning method based on an MAPSOPF algorithm. The method includes the steps that an actual operating environment is abstracted into a planar graph, and according to the position of a road sign and the paths of robots, an environmental map is built; relevant information and blackboard information of the robots are initialized; the MAPSOPF algorithm is adopted, the subsequent positions of the robots are predicted according to a fitness value, the predicted positions and the blackboard information are updated, and accurate positioning is completed. By adjusting weighing coefficients and learning factors, a competition mechanism is introduced so that the optimization effect of the algorithm can be improved, and finally, multi-robot coordination positioning accuracy is improved.

The invention discloses a method for preparing a catalytic cracking catalyst containing pseudo-boehmite.The method comprises the steps of mixing and stirring part of pseudo-boehmite and silica solution for over 15 min to prepare modified pseudo-boehmite A, the modified pseudo-boehmite A, residual pseudo-boehmite B and clay are mixed and pulped to prepare matrix size containing pseudo-boehmite, the matrix size and molecular sieve size are mixed, homogenized, formed and dried, and ion exchange is conducted to obtain the catalytic cracking catalyst, wherein the dry basis mass ratio of the modified pseudo-boehmite A to the residual pseudo-boehmite B is 0.2-2.5, and the add amount of silica solution is that SiO2 accounts for 0.5-8% of the dry basis weight of the modified pseudo-boehmite A.The catalyst prepared with the method has a high abrasion index, a large pore volume and high heavy oil conversion capacity and coke selectivity.