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135results about How to "Diffused evenly" patented technology

Catalyst for normal paraffin hydroisomerization reaction and preparation method as well as application thereof

The invention relates to a catalyst for a normal paraffin hydroisomerization reaction and a preparation method as well as an application thereof. The catalyst has the characteristics that the activity is high in an n-hexane hydroisomerization reaction, and the selectivity and stability are good for a double-branched-chain product. The catalyst comprises modified zeolite molecular sieve ZSM-12 treated by alkaline solution and noble metal of family VIII, wherein the zeolite molecular sieve ZSM-12 adopts zeolite molecular sieve ZSM-12 containing organic amine template. The preparation method of the catalyst comprises the following steps of: desilication of zeolite molecular sieve ZSM-12 containing template after being treated with alkaline solution to obtain zeolite molecular sieve ZSM-12 with high content of mesoporous, and preparing isomerized catalyst by loading Pt. The catalyst is applied in the normal paraffin hydroisomerization reaction, when the catalyst is applied, the n-hexane hydroisomerization reaction is carried out on a fixed bed miniature reactor, the reacting raw material n-hexane is fed into the reactor by a force pump, and is contacted with the catalyst to react in the reactor after being mixed with hydrogen in a mixer.
Owner:ZHEJIANG NORMAL UNIVERSITY

Preparation method of graphene nano-fiber and super-capacitor application thereof

The invention relates to a preparation method of a graphene nano-fiber and super-capacitor application of the preparation method of the graphene nano-fiber. The preparation method of the graphene nano-fiber includes the following steps: (1) an electrostatic spinning method is utilized to prepare a polymer fiber; (2) the polymer fiber obtained by the method is conducted with stabilizing treatment in appropriate temperature and in an oxygen-bearing atmosphere; (3) the fiber after the stabilizing treatment is conducted with carbonization thermal treatment in an NH3-bearing atmosphere and in appropriate temperature. The surface of the prepared graphene nano-fiber is provided with a graphene sheet which grows along the radial direction, and the thickness of the graphene sheet is 1 to 10 atomic layers. The graphene nano-fiber integrates the advantages of graphene and carbon nanofibers, solves the problems of graphene agglomeration and recrystallization, is high in surface activity and has various application values. The graphene nano-fiber is utilized to serve as a super-capacitor of electrode material preparation. Therefore, compared with the prior art, the preparation method of the graphene nano-fiber and the super-capacitor application of the preparation method of the graphene nano-fiber have good performance. The working voltage reaches 1.8-2.2 volts; the energy density reaches 41.3 watt hour/kilogram; and the specific capacitance in acid can reach 300 F/g.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Copper zinc catalyst and precursor, preparation and use thereof

The invention discloses a Cu-Zn catalyst, a precursor, a preparation method and an application thereof. The Cu-Zn catalyst takes a mesoporous molecular sieve as a carrier to load active components comprising cuprum and zinc. The preparation method comprises the following steps: the mesoporous molecular sieve is added into a water solution holding cuprum ions and zinc ions for soaking, filtered to obtain solid filter cakes which are mixed with a bonder and a bonding aid for prilling, then dried, roasted and cooled, thus obtaining the precursor of the Cu-Zn catalyst of the invention, or the mesoporous molecular sieve also can be mixed with the bonder and the bonding aid for prilling, added to the water solution holding the cuprum ions and the zinc ions for soaking, then dried, roasted and cooled. The precursor of the Cu-Zn catalyst of the invention is deoxidized in a reduction atmosphere to obtain the Cu-Zn catalyst of the invention. The Cu-Zn catalyst of the invention not only has good catalyzing efficiency, but also has good stability, high catalytic activation and relatively long service life, thus being able to be applied to the reaction of high temperature and high pressure catalytic hydrogenation of fatty acid ester or the preparation of fatty alcohol by hypercritical catalytic hydrogenation.
Owner:EAST CHINA UNIV OF SCI & TECH +1

Three-dimensional ordered porous-mesoporous iron-based perovskite oxide catalyst and preparation method thereof

The invention provides an iron-based perovskite oxide catalyst for use in purification of carbon smoke particles emitted from diesel vehicles and a preparation method thereof. The catalyst is a three-dimensional ordered porous-mesoporous iron-based perovskite oxide consisting of more than two elements from rear earth metals, transitional metals, alkali metal and / or alkaline earth metals as active components, wherein the pores of the oxide are formed into a uniform and ordered verse opal structure; and the mesopores are formed into a worm-like structure. In the invention, a carbon temperature supporting process is adopted, carboxyl-modified microspheres are used as pore temperatures, a surfactant is a mesoporous template, a firm carbon template can be formed by roasting in an inert gas, the supporting porous-mesoprous structure is free from collapse, and when roasted in the air, a perovskite structure can be formed. The catalyst of the invention can contact with carbon smoke particles effectively and is favorable for the conversion of small particles and gas molecules. Under a condition that the catalyst is in loose contact with the carbon smoke particles, the minimum combustion peak temperature is 396 DEG C, and the activity of the catalyst is equivalent to that of a noble metal catalyst.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Catalyst of three-dimensional ordered macroporous cerium-based oxide supported gold for purifying diesel soot

The invention relates to a catalyst of three-dimensional ordered macroporous cerium-based oxide supported gold for purifying diesel soot and a preparation method thereof. The invention firstly provides an oxidation catalyst for the combustion soot particulate matter emitted by diesel vehicles. The oxidation catalyst is obtained by using a simple metallic oxide or a compound metallic oxide containing one or more rare earth metallic elements and having a three-dimensional ordered macroporous structure as the active component of a carrier supported precious metal, wherein the compound metallic oxide is a Ce-based solid solution-type compound metallic oxide, and the active component of the precious metal is the gold, and moreover, the average pore size of macropores in the carrier is 50nm-1mum. Adopting the catalyst of the carrier supported precious metal with the three-dimensional ordered macroporous structure is beneficial to the diffusion of the soot particulate matter in pore canals,improves the use ratio of the active superficial area of the catalyst and greatly reduces the combustion temperature of the soot particulate matter. The invention also provides a preparation method for the catalyst.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Method for preparing carbon/carbon/silicon carbide composite material

The invention relates to a preparation method of a carbon / carbon / silicon carbide composite material. The preparation method is characterized in that: chemical gas phase permeation technology is adopted to prepare reactive carbon atom and provide protection for carbon fiber, and is combined with the resin liquid phase dipping carbonizing technology to prepare carbon / carbon composite material through adopting a pore adjusting method of a composite material blank; moreover, the density of the obtained carbon / carbon composite material is between 1.0g / cm<3> and 1.90g / cm<3>; a method according to which the gaseous atom generated through the evaporation of solid silicon and the carbon atom in the carbon / carbon composite material are formed into SiC through chemical reaction under high temperature ranging from 1,650 DEG C to 2,200 DEG C is adopted to carry out the rapid preparation of the carbon / carbon / silicon carbide composite material. Compared with body carbon / carbon composite material, the mechanical property of the carbon / carbon / silicon carbide composite material is substantially increased to an equivalent degree and has outstanding antioxidation. Moreover, the preparation method is an engineered method which can realize the efficient preparation of a small-scale thin-wall special-shaped high-performance carbon / carbon / silicon carbide composite material.
Owner:XIAN AEROSPACE COMPOSITE MATERIALS INST

High heat radiating circuit substrate and manufacturing method thereof

The invention relates to a high heat radiating circuit substrate and a manufacturing method thereof. The high heat radiating circuit substrate comprises a conducting wire layer, an insulating layer and a graphite heat conducting layer, wherein at least one electronic component can be arranged on the conducting wire layer, and wires are arranged on the conducting wire layer for connecting the electronic component; the insulating layer is positioned at one side of the conducting wire layer; and the graphite heat conducting layer is arranged at one side of the insulating layer and can uniformly radiate the heat generated by the electronic component. The manufacturing method of the high heat radiating circuit substrate comprises the following steps: firstly, using a metallic substance or an alloy thereof to manufacture the conducting wire layer; secondly, forming at least one wire on the conducting wire layer; thirdly, using an insulating substance to manufacture the insulating layer; andfourthly, jointing the graphite heat conducting layer to the other side of the insulating layer. Since the heat conducting layer of the high heat radiating circuit substrate and the manufacturing method thereof use the graphite material, not only the manufacturing cost can be reduced, but also the heat can be radiated uniformly to increase the heat radiating rate, and the like.
Owner:大连九久光电制造有限公司

Preparation method of membrane electrode comprising three-dimensional lyophobic negative electrode catalysis layer

The invention discloses a preparation method of a membrane electrode comprising a three-dimensional lyophobic negative electrode catalysis layer. According to the method, a high-platinum-content catalyst and an ultra-thin proton exchange membrane are adopted; and the negative electrode catalysis layer is added with a three-dimensional structured auxiliary and a lyophobic material to prepare the high-performance and high-power-density membrane electrode comprising the three-dimensional lyophobic negative electrode catalysis layer. By adding carbon nanotubes and the like to the negative electrode catalysis layer disclosed in the invention to form the three-dimensional structure of the catalysis layer, the porosity of the catalysis layer and catalyst utilization rate are improved, and gas diffusion capability and electron transport capability are enhanced; by virtue of the added lyophobic material, water management of the negative electrode can be improved effectively, particularly, watergenerated in the negative electrode reaction can be discharged effectively at high current density, so that it is ensured that the negative electrode reaction gas can be smoothly diffused to the negative electrode catalysis layer to be reacted with the catalyst; the preparation method is simple in steps, high in feasibility, practical and easy to operate and low in cost; and the membrane electrode is small in size, light in weight, and easy to prepare, and large-scale production of the membrane electrode can be realized.
Owner:SOUTH CHINA UNIV OF TECH

Far-infrared-ray non-radiative electric hair drier

The invention provides a far-infrared-ray non-radiative electric hair drier. The far-infrared-ray non-radiative electric hair drier comprises a shell, an air blowing device, a mica frame, a non-radiative heating device, a motor and a fan blade, wherein the mica frame is connected into the shell; the air blowing device is connected to an air outlet of the shell and is arranged at one end of the mica frame; the non-radiative heating device is connected to the mica frame and comprises a honeycomb ceramic heating body which is connected in the mica frame and can release far-infrared rays; the honeycomb ceramic heating body is connected with a negative-ion generator; and the motor is connected to the other end of the mica frame; and the fan blade is connected with the motor. The far-infrared-ray non-radiative electric hair drier provided by the invention has the advantages that the honeycomb ceramic heating body is arranged on the mica frame, heats when being electrified, is non-radiative to a human body and can not burn the human body due to constant temperature, and the released far-infrared rays can play a role in increasing blood circulation of the human body; and negative ions generated by the negative-ion generator are obvious in hair-protecting effect, and have the effects of physiotherapy and health care to the human body.
Owner:ZHEJIANG SIAU ELECTRIC APPLIANCE CO LTD

Underground heat-gas co-production gasification equipment, and coal field fire area leading edge treatment system and method

The invention discloses underground heat-gas co-production gasification equipment, and a coal field fire area leading edge treatment system and method. The equipment comprises a drill hole formed in the boundary of a fire area; a heat extraction device, a liquid carbon dioxide fracturing and anti-reflection device and a liquefied gas ignition device are mounted in the drill hole; a gasification liquid oxygen conveying sleeve, a gas collecting sleeve and a liquid carbon dioxide conveying heat insulation sleeve are arranged in an annular ultra-long gravity assisted heat pipe side by side; meanwhile, the device further comprises a fixing support plate for fixing and sealing various sleeves, and a drilling combined sleeve is integrated. The edge of the fire area is drilled into the coal bed and cracked, and underground heat-fracturing is carried out; the gas co-production gasification equipment can be used for gasifying a coal bed within a certain range on the inner wall of the drilled hole, and utilizing heat energy in the gasification process and collecting gasification products; and finally, a fire area leading edge partition area is formed, the development of coal fire is blocked,an important role is played in treatment and planning of the large-area coal field fire area, the application prospect is wide, and huge economic benefits can be brought to national energy exploitation.
Owner:CHINA UNIV OF MINING & TECH

Efficient purifying method for exhausted tail gases from firing of gangue baked bricks in portable tunnel kiln

InactiveCN104776727ASolve the problem of desulfurization and purificationSave energyWaste heat treatmentTunnel kilnChemical reaction
The invention discloses an efficient purifying method for exhausted tail gases from firing of gangue baked bricks in a portable tunnel kiln. The efficient purifying method comprises the following process steps of stacking raw materials: stacking green gangue bricks and limestone in an annular kiln bottom between annular tracks of the portable tunnel kiln; roasting the green gangue bricks and the limestone in the kiln to desulfurize: roasting the green gangue bricks and the limestone in an arc kiln body according to a certain temperature raising procedure, and performing primary desulfurization by high-temperature roasting; performing wet flue gas desulfurization: feeding the calcined limestone into a desulfurizing liquid adjusting pool, and adjusting the basic strength in the adjusting pool; introducing tail gases in the kiln body into a desulfurizing tower, sprinkling the desulfurizing liquid in the desulfurizing liquid adjusting pool into the desulfurizing tower, and performing secondary desulfurization by a chemical reaction generated in the desulfurizing tower. According to the efficient purifying method disclosed the invention, by the adoption of a combined desulfurization method of desulfurization by roasting in the kiln and the wet flue gas desulfurization, the problems of desulfurization and purification of the tail gases in the portable tunnel kiln are successfully solved; meanwhile, energy sources can be saved, and the purification cost is reduced.
Owner:HEBEI DINGLEI BUILDING MATERIAL CO LTD
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