8results about How to "Fast desorption rate" patented technology

The invention provides an aerogel material with nano defect MOF-801 loaded on the surface of calcium alginate as well as a preparation method and application of the aerogel material. The preparation method of the aerogel comprises the following steps: adding zirconium oxychloride octahydrate into a formic acid / water mixed solution to form a homogeneous solution, then adding fumaric acid into the homogeneous solution, reacting for a period of time at room temperature, centrifuging the obtained product, washing with water and ethanol, and drying to obtain MOF-801-G; the preparation method comprises the following steps: stirring and mixing MOF-801-G, a photo-thermal material polypyrrole (PPy), sodium alginate and water to obtain a uniformly dispersed solution, pouring the uniform solution into different molds, carrying out freeze drying to obtain PPy / MOF-801-G / SA (PMS) aerogel, immersing the PMS aerogel into a CaCl2 solution, carrying out crosslinking, and carrying out freeze drying to obtain the PPy / MOF-801-G / CA (PMC) aerogel. The atmospheric water-collecting aerogel material disclosed by the invention has excellent water absorption performance and photothermal conversion efficiency, and can be used for collecting clean water meeting the drinking water quality standard of the World Health Organization (WHO) in practical application.

The application discloses a preparation method and application of a ZrTiO4 single-atom catalyst rich in oxygen vacancies, and belongs to the technical field of hydrogen storage materials and preparation thereof. (SA) The ZrTiO4 single-atom catalyst rich in oxygen vacancies is Y / ZrTiO4 catalyst, and a preparation method thereof takes the precursors of Zr and Ti as raw materials, constructs a ZrTiO4 carrier rich in oxygen vacancies through reduction treatment, and introduces monodispersed Y single atoms by using an in-situ anchoring strategy.The obtained catalyst has rich oxygen vacancies and stable Y-O coordination structures, constructs high-density active sites and effectively regulates the electronic structure of the active sites.The catalyst is compounded with sodium cyanide and aluminum to prepare a composite hydrogen storage system, can catalyze the synthesis of sodium aluminum hydride at low temperature, effectively stores hydrogen, and realizes low-temperature and high-efficiency hydrogen release of the hydrogen storage system.

The utility model discloses a kind of soil pollution sampling device, it is related to soil sampling technical field, including sampling cylinder, the soil cavity of columnar is formed in it, the top area of the soil cavity is equipped with several multidirectional airflow passage;Elasticity cylinder, coaxial sleeve is set in the soil cavity, its bottom end and top outer edge are fixedly connected in the inner wall of soil cavity, unfixed wall constitutes half-suspended covering part and airflow passage export end opposite, form the dynamic gap adjustment area between covering part and the inner wall of soil cavity.The utility model passes through the gap wall folding extrusion of elasticity cylinder top wall and inner side wall by cross centripetal airflow field drive, by extrusion thrust directional effect in the residual soil in gap, the residual of gap dead angle that traditional device is difficult to handle can be targetedly removed, solve the problem that wet soil is retained solidification in gap due to viscosity, ensure that there is no hidden residual when sample soil is taken out, improve sampling integrity;The peristalsis effect of the utility model elasticity cylinder under the action of airflow.

The invention discloses a copper-cobalt bimetal composite MOF material, a preparation method thereof and application of the copper-cobalt bimetal composite MOF material in hydrogen evolution through water electrolysis. The bimetallic composite MOFs material is synthesized at room temperature, the high-performance electrolytic water hydrogen evolution catalyst is prepared through roasting, and the problems that a Pt / C noble metal catalyst is high in cost and low in natural abundance are solved. Meanwhile, a derivative prepared by taking a monometal MOFs material as a precursor is not high in catalytic activity. The prepared bimetallic composite MOFs material has high electrocatalytic activity after being roasted, the hydrolysis rate of the material and the desorption efficiency of adsorbed hydrogen are increased through the synergistic effect between bimetals, and the bimetallic composite MOFs material has long cycle life.

The invention discloses a penetration type light absorption adsorption heat storage and supply device and method, and relates to the technical field of thermochemical heat storage and building heating. Sunlight can be rapidly and comprehensively guided in for heating, desorption and heat storage when illumination exists, and after the temperature is reduced, heat release and heat supply are carried out by means of wet and cold inlet air at the bottom. According to the technical scheme, the adsorption heat storage and supply device comprises a shell with holes formed in the upper portion and the lower portion, a light guide structure fixedly connected to the interior of the shell and an adsorbent filled in the shell. According to the scheme, the actual requirements of life are better met, a plurality of pipelines can be connected in parallel to be manufactured into a shape similar to that of a solar water heater on the market to be installed on a building roof, and therefore desorption heat storage is conducted in the daytime, and adsorption heat release is conducted at night.

The present invention relates to the field of alcohol amine decarbonization, and discloses a method for desorbing CO2 by using an electric field to assist alcohol amine. The method comprises the following steps: (1) contacting and mixing an alcohol amine absorbent with CO2 to obtain a rich liquid; (2) applying an external electric field to the rich liquid at a first preset temperature, and performing a desorption treatment at a second preset temperature to obtain a product CO2 gas and a regenerated alcohol amine absorbent; wherein the second preset temperature is 2-5°C lower than the first preset temperature; and the reaction voltage of the external electric field is 3-6V. The present invention provides a method for desorbing CO2 by using an electric field to assist alcohol amine, wherein an electric field is added to assist in enhanced desorption during the desorption process, and compared with a traditional heating desorption device, the method has the advantages of faster desorption rate, higher desorption efficiency, lower energy consumption, etc., and has simple steps, low cost, easy control of parameters, and obvious economic benefits.

The present invention discloses a desulfurization liquid desorption cooling tower and a working method thereof, comprising a main body, a partition plate is arranged in the main body, and the main body is divided into a desorption chamber and a cooling chamber by the partition plate; a sieve plate is arranged in the desorption chamber, a partition wall is arranged on the top of the sieve plate, an exhaust channel is arranged on the top of the partition wall, a gas distribution chamber is formed between the bottom of the sieve plate and the partition plate, and the sieve plate and the partition wall form an annular flow channel; a plurality of gas injectors arranged in intervals are arranged in sequence in the cooling chamber, and their output ends are connected to the gas distribution chamber, the working fluid input ends are connected to the acid-making tail gas channel, and the suction chamber is connected to the cooling chamber. The present invention uses the sieve plate, the steam generated by the cooling of the acid-making tail gas and the lean liquid, and the gas stripping desorbs the desulfurized rich liquid SO2, and the lean liquid is cooled at the same time, so as to achieve the goal of significantly improving the SO2 desorption efficiency, desorption rate, and increasing the SO2 concentration of the acid-making new gas, and effectively reducing the heat consumption and desorption cost of SO2 desorption.

The invention belongs to the technical field of carbon neutralization, and particularly relates to hyperbranched polymer pentaerythritol tetra (2-piperazinyl propionate) as well as preparation and application thereof in trapping carbon dioxide. The hyperbranched polymer pentaerythritol tetra (2-piperazinyl propionate) provided by the invention has a structure as shown in a formula I. The invention further provides a preparation method of the hyperbranched polymer pentaerythritol tetra (2-piperazinyl propionate). When the hyperbranched polymer pentaerythritol tetra (2-piperazinyl propionate) provided by the invention is used for capturing CO2 in mixed gas, the hyperbranched polymer pentaerythritol tetra (2-piperazinyl propionate) has the following advantages: (1) the absorption speed is high, and the absorption capacity is high; (2) the desorption speed is high, and the desorption rate is high; (3) the desorption temperature is low, and the regeneration energy consumption is low; and (4) the volatility is low, the regeneration loss is less, and the cycling stability is strong.