11results about How to "Fast desorption" patented technology

The application discloses a kind of photo-thermal synergic self-heating carbon capture and in-situ conversion method and device, it is related to flue gas carbon dioxide capture and resource utilization technical field, wherein the method includes: the flue gas containing carbon dioxide is passed into the adsorption tower equipped with core-shell type photo-thermal adsorption catalytic particles, and carbon dioxide is adsorbed by particle core layer at normal temperature;After core layer adsorption saturation, adsorption tower is switched to closed cycle, and the light focusing system is started to focus sunlight, so that shell layer photo-thermal material generates plasmonic resonance effect and forms local high temperature, drives core layer to desorb carbon dioxide;Desorbed carbon dioxide and hydrogen occur hydrogenation reaction on the surface of shell layer catalyst, and in-situ generate liquid formic acid and release reaction heat;Relies on the heat to build self-heating cycle, auxiliary adsorbent is completely regenerated, collects tower bottom liquid formic acid, equipment is switched back to adsorption mode, and complete single-tower complete working cycle.The application realizes carbon dioxide adsorption in-situ conversion by photo-thermal coupling self-heating cycle, and reduces regeneration energy consumption.

The application relates to a micro-micro-mesoporous composite pore system ZSM-5 molecular sieve and a synthesis method and VOCs adsorption application thereof. On the basis of maintaining original micropore structure, a second micropore structure and a mesopore structure are introduced, wherein the original micropore structure can adsorb small molecules such as dichloromethane, the newly introduced second micropore structure can adsorb macromolecules such as m-xylene, the mesopore structure can improve the molecular diffusion rate, reduce the desorption temperature and improve the desorption speed. The application also relates to a preparation method of the material, mainly adopting an inorganic cation or a surfactant-mediated molecular sieve controllable desilication method. The material shows higher adsorption capacity and lower desorption temperature in the adsorption process of VOCs with a relatively wide boiling point distribution.

The invention relates to the technical field of chemical catalysts, in particular to a catalyst for preparing 2-tert-butylhydroquinone and a preparation method and application thereof.The catalyst comprises a hierarchical pore H beta molecular sieve, active metal is loaded in a framework of the hierarchical pore H beta molecular sieve, and the active metal is one or more of La, Ce and Zn. The catalyst adopts the hierarchical pore H beta molecular sieve as a skeleton, so that the diffusion limitation of the traditional microporous molecular sieve can be effectively broken through, and the occurrence of side reactions is reduced while the intrinsic rate of the reaction is greatly improved. La, Ce and Zn active metals are introduced into a hierarchical pore H beta molecular sieve framework to form a high-activity catalytic center synergistic system, and the reaction process is enhanced. Compared with the traditional liquid acid catalyst and ion exchange resin, the catalyst has the characteristics of simple process, easiness in recovery, no pollution, good high-temperature stability, high catalytic activity, good selectivity and low cost, and solves the core problems of low activity, heavy pollution and high cost of the traditional catalyst.

The present application relates to polishing robot technical field, especially a kind of parallel electromagnetic adsorption wall-climbing robot for curved surface polishing, including robot shell, electromagnetic adsorption mechanism, adaptive wheel group and 3RSS-U parallel polishing device.Slot is arranged at the cladding plate of robot shell with interval, for installing electromagnetic adsorption mechanism and mackenna wheel group with shock absorber, so that robot can be stably adsorbed and adaptively moved on complex curved surface.3RSS-U parallel polishing device located in the inside of shell, through three evenly distributed series motion branches and a central air bag type cylinder connection fixed platform and movable platform with polishing head, realizes the three-degree-of-freedom precision polishing movement of two rotation one movement, the present application has large range of movement ability, high rigidity operation characteristics and excellent curved surface adaptability, especially suitable for the automatic polishing operation of complex curved surface such as ship, large storage tank etc.

This invention discloses a phase transfer enrichment functional catalyst for the preparation of 3-hydroxypropional from acrolein hydration, its preparation method, and its application, relating to the field of catalyst technology. Using macroporous styrene-based resin as a support, this invention introduces an intermediate containing dichlorinated active sites through a Friedel-Crafts phosphorylation reaction between phosphorus oxychloride and the resin surface. Subsequently, through stepwise esterification and hydrolysis reactions, organophilic long chains and phosphate hydroxyl functional groups are introduced, respectively, constructing a microenvironmental catalytic system with synergistic effects of organophilic side chains and acidic centers, thereby improving the conversion rate and selectivity of the acrolein hydration reaction.

The application discloses a catalyst for biomass gasification hydrogen production, a preparation method of the catalyst and a hydrogen production method. The preparation method comprises the following steps: uniformly mixing a doping component A and a doping component B to obtain a material flow I; adding an anionic surfactant and a first precipitator into a calcium salt solution, controlling the pH of the system to be 8-9, and then uniformly mixing at 40-60 DEG C to obtain a material flow II; adding the material flow I, a second precipitator and a third precipitator into the material flow II, uniformly mixing at 70-80 DEG C to obtain a material flow III, and further performing heat treatment to obtain the catalyst. The application also provides the catalyst prepared by the above method and a hydrogen production method by biomass gasification. The application overcomes the densification problem of the adsorption and desorption process of the conventional calcium-based absorbent, and further realizes the double goals of biomass production of high-quality hydrogen and recycling of the calcium-based absorbent through matching of the double fluidized bed process.

This invention discloses the preparation and application of a porous bismuth ferrite material. The preparation method includes the following steps: dissolving bismuth and iron salts in an acid solution to obtain a metal solution; adding a complexing agent and a pore-forming agent to the metal solution and mixing to obtain a precursor solution; heating the precursor solution to obtain a wet gel; drying the wet gel to obtain a dry gel; and calcining the dry gel under an inert atmosphere containing 6-10% oxygen to obtain the porous bismuth ferrite material. The porous bismuth ferrite electrode material of this invention not only solves the structural defects of traditional porous bismuth ferrite materials, such as small pore volume and insufficient utilization of active sites, but also fully utilizes its membrane capacitance characteristics and bimetallic synergistic effect, showing excellent application prospects in the field of capacitive deionization and chlorine removal.

The invention discloses a high-frequency surface acoustic wave dimethyl methylphosphonate sensor and a preparation method thereof, and belongs to the technical field of gas sensors. The sensor comprises a piezoelectric substrate, an interdigital transducer arranged on the piezoelectric substrate and a gas sensitive layer formed on the surface of the interdigital transducer, the gas sensitive layer comprises a 11-mercaptoundecanoic acid material layer formed on the surface of the interdigital transducer and a zirconium-based MOF material layer formed on the 11-mercaptoundecanoic acid material layer. The invention also provides a preparation method of the sensor. The 11-mercaptoundecanoic acid and the zirconium-based MOF material layer are modified on the surface of a high-frequency surface acoustic wave device layer by layer through a molecular self-assembly technology. The sensor disclosed by the invention has high sensitivity, quick response and good repeatability on dimethyl methylphosphonate gas, is simple in preparation process and good in repeatability, and has important application value in the field of gas sensing.

The invention discloses a transparent photo-thermal driving flexible wet pump material as well as a preparation method and application thereof, and belongs to the technical field of air humidity regulation and energy-saving building materials. The transparent photo-thermal driving flexible wet pump material prepared by the invention is a transparent material, does not block outdoor light from irradiating indoors when being used, and does not influence the lighting capacity of a house; and meanwhile, due to the flexible material, when not in use, the clothes hanger can be rolled up and stored, and does not occupy space. The transparent photo-thermal driving flexible wet pump material prepared by the invention can realize one-way transfer of water from indoor to outdoor, can realize transfer of water from high humidity to low humidity, can also realize transfer of water from low humidity to high humidity, and passively reduces the indoor humidity of a building. According to the transparent photo-thermal driving flexible wet pump material, photo-thermal conversion is conducted through the efficient photo-thermal particles, the temperature of the composite material can be rapidly increased within a short time, and therefore absorbed water can be rapidly desorbed, and zero-energy-consumption regeneration is achieved.

The invention belongs to the technical field of catalyst preparation, and particularly discloses a high-catalytic-efficiency non-noble-metal-based bifunctional catalyst and a preparation method and application thereof.The preparation method comprises the following steps that transition metal salt and halogen element salt are dissolved in a mixed reagent of ethyl alcohol and water, the mixed reagent is dropped on a conductive substrate, and the conductive substrate is dried to obtain the high-catalytic-efficiency non-noble-metal-based bifunctional catalyst. The preparation method comprises the following steps: adding a halogen-doped non-noble metal-based bifunctional catalyst into a reaction kettle, carrying out a solvothermal reaction on a heating plate at a heating temperature of 80-120 DEG C for 5-10 h, drying the obtained material, and carrying out plasma treatment to obtain the halogen-doped non-noble metal-based bifunctional catalyst. By adopting the high-catalytic-efficiency non-noble metal-based bifunctional catalyst as well as the preparation method and the application thereof, the problems that most high-efficiency catalysts in the ENRR field in the prior art are composed of noble metals, are high in cost and are not beneficial to industrial treatment of nitrogen-containing wastewater; the problem that a noble metal-based catalyst is easily subjected to S poisoning in an anode SOR and is rapidly inactivated is solved, and the non-noble metal-based bifunctional catalyst with high catalytic efficiency is constructed.

This invention discloses a cellulose-hydrogel composite film, its preparation method, and its applications, belonging to the field of composite film technology. The composite film comprises a cellulose acetate skeleton, a temperature and humidity responsive hydrogel network composited within the pores of the cellulose acetate skeleton, and lithium chloride loaded within the hydrogel network; the temperature and humidity responsive hydrogel network is formed by copolymerization of N-isopropylacrylamide and 2-hydroxyethyl acrylate. The composite film of this invention exhibits an average solar reflectance of over 92.0% and an infrared emissivity of over 96.1% under dehumidified conditions, and a solar reflectance modulation rate of 55.57% under hygroscopic conditions. It can achieve a cooling rate 15.6°C below ambient temperature in high-temperature environments and effectively suppress supercooling in low-temperature, high-humidity environments, realizing dynamic thermal management across all climates in high-humidity environments.