41results about How to "The catalytic reaction is sufficient" patented technology

The invention relates to a preparation method of a molybdenum-based composite material electrode plate. In a glove box filled with argon, molybdenum powder and nickel powder are poured into excess titanium tetrachloride, stirred thoroughly and filtered, and the The mixed powder of titanium dioxide is placed in the quartz tube of the tube furnace for heat treatment, and the mixed powder after heat treatment is placed in a graphite mold for discharge plasma sintering. The sintered sample is soaked in titanium tetrachloride again, and filtered. The sample is taken out and put into the quartz tube of the tube furnace again, and oxygen and hydrogen sulfide are fed in sequence for heat treatment, and the molybdenum-based composite material electrode plate is obtained after completion. The invention has low cost, convenient operation and controllable process. The obtained electrode plate has high catalytic activity and good electrical conductivity, and at the same time has certain mechanical properties and processability. It can be used not only as a catalyst, but also as a current collector, and can also be directly used as an electrode to catalyze water splitting. The prospect of large-scale industrial production.

The invention discloses a method for preparing carbon nanotubes from coal. The powdered coal is mixed with water, melamine and soluble cobalt salt or nickel salt, and then wet-milled by a high-energy ball mill to obtain a slurry mixture. After the mixture is freeze-dried A porous mass is obtained. The block is placed in a high-temperature atmosphere furnace and sintered in a hydrogen / argon mixed atmosphere to prepare clustered carbon nanotubes. Finally, purer carbon nanotubes are obtained by acid washing and water washing. The present invention uses natural coal as a raw material, does not need to carry out pretreatment on coal, has low selectivity to coal types, high yield, and the diameter of prepared carbon nanotubes is between 40-100 nanometers, and the diameter of carbon tubes is evenly distributed; and the preparation process is simple , the process is simplified, the equipment requirement is low, the cost is low, and it is easy to realize industrialized production. It has huge market demand and broad application prospects in the fields of lithium-ion batteries, supercapacitors, nanocatalysis, biomedicine, and environmental protection.

The invention discloses a motor vehicle tail gas catalytic purifying device. The motor vehicle tail gas catalytic purifying device comprises a shell body and a catalyst carrier, wherein the shell body comprises a main body part, a gas inlet part and a gas outlet part, the gas inlet part and the gas outlet part are located on the two sides of the main body part, and the catalyst carrier is arranged in the main body part. The gas inlet part is internally provided with a gas guiding device. The gas guiding device comprises a deflector which is fixedly clamped in the gas inlet part, perpendicular to the gas inlet direction and provided with a plurality of gas guiding holes, and a gas flow stirring device which is fixed to the deflector. The gas flow stirring device comprises a driving device, a stirring rod and at least one pair of blades, wherein the driving device is fixedly arranged on the side, close to the gas inlet part, of the deflector; the stirring rod is connected with the driving device, penetrates through the deflector and extends to the side, away from the gas inlet part, of the deflector; and the blades are fixed to the end, away from the gas inlet part, of the stirring rod. According to the motor vehicle tail gas catalytic purifying device, through the combined action of the deflector and the gas flow stirring device, internal gas flowing is more uniform, and the time for internal gas to flow through the catalyst carrier is prolonged, so that catalytic reaction is more sufficient, thus, the conversion efficiency of the catalytic device is effectively improved, and the utilization rate of the catalytic device is effectively increased.

The invention discloses a biomass catalytic pyrolysis co-production system for gas-liquid fuels, chemicals and carbon materials, including a biomass in-situ catalytic pyrolysis co-production subsystem, a pyrolysis volatile online catalytic proton extraction system, Non-condensable gas catalytic reforming subsystem and biochar activated ammoniation modification subsystem. Biomass in-situ catalytic pyrolysis polygeneration subsystem performs in-situ catalytic pyrolysis of biomass to obtain pyrolysis volatiles and biochar; pyrolysis volatiles online catalytic proton extraction system performs multi-stage online catalytic extraction of volatiles quality, multi-stage cooling and separation and purification to obtain phenolic chemicals and aromatic fuels; the non-condensable gas catalytic reforming subsystem performs multi-stage catalytic reforming of pyrolysis gas to obtain methane-rich gas fuel for power generation and heat supply; The biochar activated ammonification modification subsystem fully ammonates and modifies the biochar to obtain high-value nitrogen-doped carbon materials. The invention realizes the goal of green and high-efficiency continuous preparation of electricity, heat, chemicals and carbon materials.

The invention discloses a novel method of utilizing liquid blast furnace slag waste heat to crack biomass and produce high quality fuel gas. Through technological control, the liquid blast furnace slag can be effectively cooled, and the heat energy of the slag is effectively utilized, and meanwhile the biomass can be transformed into the high quality energy gas. The technical scheme of the technology is as follows: the liquid blast furnace slag is heated, and the biomass and cooling water are gasified; under catalysis of the blast furnace slag, the biomass cracked gas and the vapor are subjected to catalytic reaction; the tar is gradually catalyzed to generate the energy gas mainly containing CO and H2; and meanwhile, Cl and CO2 in the energy gas is absorbed by alkali substance in the blast furnace slag. The technology greatly saves the energy source while cooling the blast furnace slag, and also produces the high quality energy gas.

The invention is a novel method for utilizing liquid steel slag to crack biomass and produce high-quality fuel gas. Through process control, the liquid steel slag can be effectively cooled and its heat energy can be effectively used, while biomass can be converted into high-quality energy gas. The technical scheme of this process is: heating liquid steel slag and gasifying biomass and cooling water, under the catalysis of steel slag, biomass cracking gas and water vapor undergo a catalytic reaction, tar gradually generates CO and H2-based energy gas, and at the same time Cl and CO2 in the energy gas are absorbed by the alkaline substances in the steel slag. This process greatly saves energy while cooling steel slag, and obtains high-grade energy gas at the same time.

The invention provides a catalytic filter composite element and a preparation method and application thereof. The preparation method includes mixing ceramic fibers, silica sol and dispersant to form a uniform slurry, mixing the slurry into a mold, demoulding after molding, drying and calcining to obtain a base material; immersing the base material in a first The solution is kept in a vacuum for a period of time, taken out, microwave-dried, and roasted to obtain an intermediate element; the intermediate element is immersed in the second solution, kept in a vacuum for a period of time, taken out, microwave-dried, and roasted to obtain the catalytic filter composite element. The present invention further provides the catalytic filter composite element obtained by the above preparation method and its application in the synergistic removal of particulate matter and NOx. The above composite element has large pores, high toughness, large specific surface area, low pressure drop, high filtration efficiency and high catalytic activity.