13results about How to "Reduce catalysis" patented technology

The lithium ion secondary battery comprises a positive plate, a negative plate, electrolyte and a diaphragm, the negative plate comprises a negative current collector and a negative active layer arranged on the negative current collector, the negative active layer comprises a first active layer and a second active layer which are arranged on the surface of the negative current collector, and the second active layer is arranged on the surface, far away from the negative current collector, of the first active layer; the first active layer comprises a first negative electrode active material, and the first negative electrode active material comprises first graphite; the second active layer comprises a second negative electrode active material, and the second negative electrode active material comprises silicon carbon; the electrolyte comprises 1, 3, 6-hexane trinitrile, the mass content of the 1, 3, 6-hexane trinitrile in the electrolyte is 0.5 wt%-10wt%, and the battery provided by the invention has a relatively high cycle capacity retention ratio.

The invention relates to the technical field of deodorants, in particular to a deodorant capable of effectively adsorbing and eliminating environmental odor, which is prepared from the following components in percentage by mass: 30 to 40 percent of activated carbon powder, 15 to 25 percent of plant extract, 10 to 20 percent of microbial agent, 5 to 10 percent of disodium ethylene diamine tetraacetate and the balance of water. The plant extract liquid comprises 10%-18% of folium artemisiae argyi extract liquid, 8%-12% of pepper extract liquid, 12%-18% of pomelo peel extract liquid, 10%-15% of tea tree extract liquid, 10%-15% of lavender extract liquid, 8%-12% of lemon eucalyptus oil extract liquid and 7%-10% of mint extract liquid; through cooperation of the materials, the adsorbability and deodorization performance of the deodorant are improved, the intensity of odor in the environment is remarkably reduced, the odor is continuously adsorbed, secondary pollution is avoided after the deodorant is used, the odor in the environment is effectively covered, and the smell feeling is improved.

This invention discloses a method for preparing zeolite molecular sieves with precisely adjustable particle size, comprising the following steps: (1) adding aluminum source and other raw materials to deionized water and stirring evenly at room temperature; (2) adding silicon source, stirring at room temperature, and then adding template agent to obtain precursor slurry; (3) adding zeolite molecular sieve, the amount of zeolite molecular sieve being 1-15 mg / g of precursor slurry, transferring the precursor slurry to a high-pressure reactor, fixing it on a homogeneous reactor, heating to 0-150℃, maintaining for 1-200 h, and then heating to 160-230℃ for 3 hours to crystallize for 6-96 h; (4) obtaining zeolite molecular sieve after centrifugal washing, drying, and calcination. The innovation of the preparation method of this invention lies in the first use of a two-stage synthesis method, which can gradually reduce the particle size of the zeolite molecular sieve product while increasing the yield of zeolite molecular sieves. This method successfully synthesized SAPO-34 zeolite molecular sieve with a particle size deviation of less than 0.4 μm and ZSM-5 zeolite molecular sieve with a particle size deviation of less than 0.2 μm.

The invention discloses a lithium manganate positive electrode material, a preparation method and an applied lead-lithium battery, relates to the technical field of lithium manganate positive electrode materials, and solves the problems that the existing lithium manganate positive electrode material is poor in structure and interface stability and poor in rate and cycle performance. The positive electrode material is composed of a lithium manganate matrix and a double-layer composite coating, the matrix is prepared by taking lithium carbonate and manganous-manganic oxide as raw materials and doping magnesium hydroxide, aluminum hydroxide and titanium dioxide multi-plasma phase; the lithium manganate positive electrode material is prepared by uniformly compounding a lithium manganate matrix modified by a spinel inner layer, vinyl functionalized MOF and a polyvinylidene fluoride-hexafluoropropylene copolymer on the surface of an aluminum foil receiver through an electrospinning-electrospray synergistic process. The material is applied to the lead-lithium battery, shows excellent electrochemical performance and has good practical application value.

This invention discloses a silica-alumina phosphate fluidized bed catalyst, its preparation method, and its application. The preparation method of the silica-alumina phosphate fluidized bed catalyst includes: (1) mixing a second silicon source, a second aluminum source, a second phosphorus source, and water to obtain a mixture I, mixing it with seed crystals, and then preparing a dry adhesive; mixing the dry adhesive with a binder, a matrix material, and water to form a suspension III; (2) high-speed shearing the suspension III obtained in step (1), and then spray drying to obtain solid microspheres; (3) vapor-phase crystallization of the solid microspheres obtained in step (2) with an organic template agent and water, followed by calcination to obtain the silica-alumina phosphate fluidized bed catalyst. The silica-alumina phosphate fluidized bed catalyst prepared by the method of this invention exhibits good wear resistance and high crystallinity. When used in the production of ethylene and propylene from methanol and / or dimethyl ether, it shows high catalytic activity and high selectivity for the products ethylene and propylene.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The invention discloses a photodegradation catalyst prepared from a saccharide hydrolysis by-product humate and a method and application thereof, carbohydrates are used as raw materials, the carbohydrates are mixed in a water / organic two-phase system of an acidic catalyst, a promoter, water and an organic solvent, the mixture is heated to a certain temperature to react for a period of time, a humins carrier crude product is obtained after treatment, and the humins carrier crude product is subjected to post-treatment to obtain the photodegradation catalyst. And then uniformly dispersing the humins carrier crude product and a metal oxide or a non-metal oxide in water in a high-temperature and high-pressure reaction kettle, heating and keeping for a period of time, and washing and drying the recovered solid after the reaction is finished to obtain the humins-based photodegradation catalyst. According to the method disclosed by the invention, the organic dye is degraded by adopting a method of combining a saccharide hydrolysis byproduct humins and a photocatalysis technology, the catalytic reaction is relatively efficient, and the energy utilization rate is high; meanwhile, after the photocatalyst is circulated for multiple times, the catalytic effect is slightly reduced, and a new way is provided for reducing solid waste generated by biomass conversion and efficiently degrading water pollutants.

The invention discloses a method for preparing a PdH-coated mC core-shell catalyst and catalyzing phenol to prepare cyclohexanone, which comprises the following steps: S1, dissolving xylose in deionized water, stirring, adding K2PdCl4, and carrying out ultrasonic treatment to obtain a mixed solution; s2, putting the mixed solution in the S1 into a hydrothermal reaction kettle, putting the hydrothermal reaction kettle into a drying oven for hydrothermal reaction, and after the hydrothermal reaction is finished, taking out the hydrothermal reaction kettle and cooling the hydrothermal reaction kettle to room temperature; s3, the solution in the hydrothermal reaction kettle in the S2 is poured out, vacuum drying is performed after centrifugal washing, and the PdH (at) mC core-shell type catalyst is obtained. The catalyst has high catalytic activity and selectivity when used for catalyzing phenol to prepare cyclohexanone, few byproducts are obtained and are easy to treat, the catalyst does not need follow-up treatment, the catalyst can be directly and repeatedly used, and the recycling effect is good. The preparation method disclosed by the invention is simple, and the synthesized core-shell type catalyst is regular in morphology and has relatively good catalyst stability, catalytic activity and reusability.

The invention discloses a waste incineration method, device and equipment capable of reducing dioxin emission and a storage medium, and the method comprises the steps that before waste enters a hearth, an electromagnetic attraction module is driven to adsorb heavy metal in the waste based on a signal of a gravity sensing element of a container for loading the waste, and after the waste enters the hearth, the electromagnetic attraction module is driven to attract the heavy metal in the waste; based on a signal of a gravity sensing element of a container on the hearth feeding rail, the hearth feeding rail is driven to decelerate to 80% of the empty carrying speed of the hearth feeding rail, after garbage starts to be incinerated, dioxin is monitored, if dioxin exceeds a preset standard, a valve leading to the interior of the hearth is opened, and otherwise, a valve leading to the outside is opened. Therefore, by separating the heavy metal in the garbage and reducing the catalytic action of the heavy metal on dioxin in the incineration process, after the garbage enters the hearth, the retention time of the garbage in a high-temperature area is longer, more sufficient combustion of organic matters is ensured, the risk of dioxin generation is reduced, and low emission of dioxin can be enhanced under the normal garbage incineration working condition.

The present application relates to a kind of hydrophobic copper-based molecular sieve catalyst and its preparation method and use method, belong to copper-based catalyst technical field.The present application discloses a kind of hydrophobic copper-based molecular sieve catalyst, the hydrophobic copper-based molecular sieve catalyst includes the copper nanoparticle of mass ratio 1 :(0.3~1.2) :(1~10), methyl functional group, silica molecular sieve framework;The methyl functional group is located on the surface of silica molecular sieve framework, and copper nanoparticle exists in silica molecular sieve channel and / or cavity.This application also discloses the preparation method of hydrophobic copper-based molecular sieve catalyst and the use method of hydrophobic copper-based molecular sieve catalyst.This application will be evenly distributed in the copper nanoparticle in silica molecular sieve channel and / or cavity, and there is methyl functional group on the outside of urchin-shaped structure molecular sieve, in maleic anhydride selective hydrogenation make by-product water quickly leave catalyst surface, reduce the occurrence of hydrolysis side reaction, improve catalyst activity and reduce the selectivity of acid product.

To provide a metal complex or adduct thereof having excellent oxygen reduction catalyst performance, a catalyst including the metal complex or adduct thereof and a method of producing the catalyst, a liquid composition or electrode including the catalyst, and an air battery or fuel cell including the electrode. A metal complex or adduct thereof represented by Formula (1) or (2), a catalyst including the metal complex or adduct thereof, a method of producing the catalyst, a liquid composition or electrode including the catalyst, and an air battery or fuel cell including the electrode.

The invention belongs to the technical field of biochar-based catalysts, and provides a supported biochar-based composite catalyst MnFe-LDH-coated Co-CC as well as a preparation method and application of the supported biochar-based composite catalyst MnFe-LDH-coated Co-CC. The method comprises the following steps: mixing straw powder and an acidic LiBr molten salt hydrate, and carrying out a reaction to obtain biochar; mixing the biochar with a cobalt chloride solution, and dropwise adding a sodium borohydride solution into the mixed solution to obtain cobalt-loaded biochar; mixing the cobalt-loaded biochar with a ferromanganese salt solution to obtain a mixed solution, dropwise adding an alkaline solution into the mixed solution to obtain a turbid liquid, and sequentially carrying out ultrasonic treatment and water bath reaction on the turbid liquid to obtain the loaded biochar-based composite catalyst. The composite catalyst is a non-toxic, pollution-free, green and environment-friendly catalyst, can quickly and efficiently degrade coexisting antibiotics in water, is used as a heterogeneous reaction catalyst, is easy to separate from a reaction system and can be repeatedly used, and the use cost of the catalyst is reduced.

This invention discloses an electrolyte additive for suppressing gas production, an electrolyte, and a lithium-ion battery. By carbonate-modifying hexamethyldisilazane, the resulting carbonate-modified silazane is used as an electrolyte additive for lithium batteries. On the one hand, it can suppress the gas production problem of hexamethyldisilazane in the electrolyte. On the other hand, it forms a stable SEI film on the negative electrode surface and a stable CEI film on the positive electrode surface, thereby improving the stability of the electrode / electrolyte interface under high temperature and high pressure, and enhancing the specific capacity and cycle life of the lithium-ion battery.