231 results about "Hydrogen bubble" patented technology

A catalytic hydrocracking reactor vessel for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream, a grid plate bubble cap with a tapered bell cap wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop, optionally a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger, and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.

The invention discloses a preparation method of a super-hydrophobic meshy material. The method comprises the following steps of (1) preparing a porous meshy Cu film by using a hydrogen bubble template method; (2) oxidizing the porous Cu film at a certain temperature to obtain Cu2O, and modifying the surface of the porous meshy Cu film by using dodecylthiol and tetradecanoic acid to obtain a super-hydrophobic porous meshy film. The hydrogen bubble template method for preparing a porous material has the advantages of simplicity, convenience, low cost and parameter controllability; a three-dimensional porous meshy film can be obtained through depositing on a copper wire mesh by using the method; the porous film is prepared by taking a dynamic hydrogen bubble as a template; compared with a hard template method, the method has the advantages that the template is not needed to be removed, the problems such as high cost, complexity in operation and serious film pollution in the traditional method are solved, and the industrial production is expected to be realized.

The invention belongs to the technical field of direct methanol fuel cells and discloses a preparation method of a nano-palladium or palladium-nickel alloy catalyst having a three-dimensional porous structure. The preparation method comprises carrying out cathode electrodeposition in a metal salt solution to obtain the nano-palladium or palladium-nickel alloy catalyst having a three-dimensional porous structure, wherein in the cathode electrodeposition, produced hydrogen bubbles are used as dynamic templates. The nano-palladium or palladium-nickel alloy catalyst obtained by the preparation method is a three-dimensional porous Pd or Pd-Ni alloy, has aperture walls composed of nanoscale dendritic crystals, has a large chemically active specific surface area, and has good catalytic activity and stability in electrocatalytic oxidation of methanol. The preparation method has simple processes, obvious effects and a wide application prospect in the field of anode catalysts of direct methanol fuel cells.

The invention discloses a preparation method of a gecko structure simulating adhesive and relates to a preparation method of a gecko foot simulating microarray. The preparation method of the gecko structure simulating adhesive, disclosed by the invention comprises the following steps of: (1) preparing a porous metal film by using a hydrogen bubble template method; (2) mixing a high polymer with a cross-linking agent, vacuumizing, pouring the mixed liquor on a template of the porous metal plate for curing; and (3) removing a base and the porous metal template by using chemical and electrochemical methods. The preparation method disclosed by the invention is easy to operate and needs no complex instruments; experiment parameters are controllable; and a prepared gecko foot simulating microarray structure has very high adsorption capacity, also can be easily separated from the absorptive surface and simultaneously has super-hydrophobicity and self-cleaning capability. For the gecko foot simulating microarray prepared by using the hydrogen bubble template method and taking porous metal as a template, the area is 0.1-5 square centimeters, the diameter is 0.5-100 micrometers, the height is 0.5-20 micrometers, the elasticity modulus of a material is 1-15GPa, and the shear strength is 1-150kPa.

The invention provides an airflow-separated hydrogen-rich water cup and a work method thereof. The airflow-separated hydrogen-rich water cup comprises a cup body, a cover body connected with the top of the cup body in a detachable way, a base fixedly connected with the bottom of the cup body in a sealing way, and an electrolysis unit installed in the cup body, wherein a power supply module and a printed circuit board (PCB) are installed in the base; a control circuit is arranged on the PCB; a heating ring and a temperature sensor are arranged on the top of the base; the cover body comprises a water storage bin, a filter element arranged at the bottom of the water storage bin, and a bottle cap connected with the top of the water storage bin in a detachable way; an air escape valve is arranged on the top of the bottle cap; the electrolysis unit comprises an electrode holder connected with the bottom of the base, a gas-collecting hood installed on the top of the electrode holder, and a negative plate, a first isolation plate, an ionic membrane, a second isolation plate and an anode plate which are installed on the electrode holder from top to bottom; vent holes are formed in the electrode holder under the anode plate; the power supply module, the temperature sensor, the heating ring, the negative plate and the anode plate are respectively connected with the control circuit. The airflow-separated hydrogen-rich water cup not only solves the interference effect of oxygen bubbles on the rising process of hydrogen bubbles, but also increases the types of electrolysed water, and is convenient to use.

A preparation method of a three-dimensional micrometer level porous copper thin film comprises: a metal substrate is offered and serves as a negative electrode and a red copper sheet is offered and serves as a positive electrode; electroplating liquid is prepared, the content of Cu2+ in the electroplating liquid is 0.08mol / L to 0.2mol / L, the content of H2SO4 is 1.50mol / L to 3.00mol / L, the total content of a surface active agent is 0.5 mmol / L to 4.0mmol / L and the content of Cl- is 1.5mmol / L to 3.0mmol / L; and the three-dimensional porous copper thin film is formed on the metal substrate by using the electroplating liquid, the negative electrode and the positive electrode and adoption of a hydrogen bubble dynamic formwork electrodeposition method. The three-dimensional micrometer level porous copper thin film manufactured through the preparation method is even and small in hole diameter and high in porosity.

The present invention relates to a portable device for generating ozone in water, purifying the water and making it drinkable. The device comprises a housing; at least two electrodes, including an anode and a cathode extending from the housing into the water and each having semi-rough or rough surfaces in contact with the water. The device also comprises a power supply operatively connected to the electrodes for generating between them a difference of potential creating a current and the hydrolysis of the water creating ozone that purifies the water. The electrodes may have a plate or a rode and tube configuration with a plurality of holes with rough edges. The roughness of the surfaces and of the edges of the holes leads to a coalescence of tiny hydrogen bubbles into larger hydrogen bubbles. The hydrogen may be also removed by absorption in a conductive material and regenerated for reuse.

The invention discloses a method for extracting gallium through ultrasonic-assisted intensified electrolysis, which belongs to the technical field of the electrolytic extraction of gallium. The method comprises the steps of adding a cathode and an anode subjected to preprocessing into an electrolytic bath containing gallium-contained solution, applying ultrasonic field to the gallium-contained solution, and electrifying to perform the electrolytic extraction of gallium at 20 to 50 DEG C and 100 to 2000A / m<2>. As ultrasonic cavitation microjet has intensive stirring effect on the solution, the thickness of a diffusion layer on the surface of an electrode is reduced, and the reaction rate and the current efficiency are improved. In addition, the ultrasonic effect accelerates the speed of hydrogen bubble separated from the surface of the electrode, on one hand, the influence on practical current density by hydrogen is reduced or eliminated, on the other and, electrodeposited gallium is uniform and dense, the activity is reduced, and re-dissolution of the deposited gallium is also inhibited. The method for extracting gallium through ultrasonic-assisted intensified electrolysis has the advantages of simple process, easiness in operation and the like.