4results about How to "Reduce catalysis" patented technology

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.

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.