35results about How to "Promote hydrogen production" patented technology

A catalyst for electroreducing carbon dioxide and carbon monoxide to produce multi-carbon products and its preparation method and application, belonging to the field of electrocatalysis, the catalyst is a halogen-modified copper electrocatalyst, and the halogen includes at least one of fluorine, chlorine, bromine and iodine The preparation method of the catalyst is as follows: the copper halide precursor is supported on the gas diffusion layer, and the electroreduction is to obtain a halogen-modified copper electrocatalyst; the copper halide precursor includes a copper fluoride hydroxide precursor and a copper fluoride hydroxide precursor. At least one of other copper halide precursors; the catalyst is applied to the reaction of electroreduction of carbon dioxide and carbon monoxide to produce multi-carbon products, with high reactivity, high selectivity, stable catalytic performance, and maintenance in a wide current range Very high selectivity for multi-carbon products.

The invention discloses a use of cyanobacteria and algae mud in an algae-water separation station to prepare biomass activated carbon and use it for the adsorption of algal toxins in tail water. The biomass activated carbon is prepared by the following method: step S1, uniformly dispersing nano-iron oxide in the algae-water separation station to produce The cyanobacteria algae mud to obtain the algae mud to be treated, the water content of the algae mud is controlled at 80-95%, and the addition ratio of nano-iron oxide in the algae mud is 1-3wt%; step S2, the algae mud to be treated is passed through a high-pressure plunger pump Transport to the continuous supercritical water gasification reactor, heat up to 450-600°C at a rate of 10-15°C / min for supercritical water gasification reaction, the reaction product is cooled, gas-liquid-solid separation, solvent cleaning, and drying Biomass activated carbon with network polymorphic pore structure is obtained. The biomass activated carbon of the invention can effectively absorb algae toxins in tail water, and the cyanobacteria algae mud can be used as a raw material to realize high-efficiency reduction, harmless treatment and reuse of the cyanobacteria algae mud.

The invention discloses a catalytic hydrogen production method and device suitable for a hydrogen energy automobile. The method disclosed by the invention specifically comprises the following steps: electromagnetically heating to dry a catalyst under nitrogen protection, stopping introduction of nitrogen and starting a liquid organic hydride cooler; starting a temperature control rheometer, maintaining the rotating speed of a rotary electromagnetic heating disc, and after the catalyst is stabilized at the reaction temperature, spraying, atomizing and feeding the liquid organic hydride intermittently; and condensing, separating and discharging the product hydrogen. According to the method and device disclosed by the invention, hydrogen production reaction conditions are uniformly designed and optimized to obtain the optimal reaction conditions. According to the method and device disclosed by the invention, a noble metal catalyst is replaced by cheap raney nickel, so that the reaction cost is lowered, and a carbon deposition deactivated catalyst can be regenerated by eliminating carbon with water vapor. A spraying and atomizing feeding method is adopted, the rotary electromagnetic heating is arranged, the surface temperature return time of the catalyst is fully utilized, and dehydrogenation reaction is carried out under a wet-dry multiphase reaction condition, so that the reaction efficiency is improved. No carrier gas is adopted, and the produced hydrogen is high in purity and free of being re-separated, so that the method and device are suitable for the hydrogen energy automobile.

The invention discloses a method for pretreatment to improve the mixed hydrogen production of kitchen waste and cyanobacteria, and belongs to the technical field of treatment and utilization of organic solid waste. In the invention, the anaerobic granular sludge is heat-treated, mixed with kitchen waste and cyanobacteria pretreated by high-pressure homogenization in an appropriate ratio, and the solid content rate of the reaction system is controlled; Heat treatment can effectively kill methanogens, while hydrogen-producing bacteria that can produce spores will survive. The kitchen waste and cyanobacteria pretreated by high pressure homogenization are added to the anaerobic mixed fermentation hydrogen production system. Microorganisms can degrade some refractory substances in cells and hydrolyze some extracellular polymers, thereby promoting anaerobic fermentation to produce hydrogen. At the same time, the hydrogen production efficiency was also improved, and the cumulative hydrogen production was 36.67 mL·gVS ‑1 , realizing the efficient recovery of hydrogen energy.

The invention discloses a catalyst for methane preparation using biomass and coal and a preparation method and application of the catalyst and belongs to the field of catalyst preparation and application. The catalyst uses active coke as the carrier to load an active component which is nickel, cerium or yttrium and auxiliaries which are iron oxide and calcium oxide. The preparation method includes: mixing low-rank coal with binder and iron oxide powder to prepare active coke; impregnating for several times to load the active component and the calcium oxide. Methane can be generated by directlymixing the obtained catalyst with the biomass and coal and feeding water steam to perform reaction. The active coke is prepared from the low-rank coal, so that the carrier which is porous and large in specific surface area can be provided, and the preparation cost of the catalyst can be lowered; the catalyst can simultaneously catalyze biomass and coal pyrolytic reaction, water gas change reaction and methanation reaction.