36results about How to "Achieve catalytic effect" patented technology

The invention discloses an electrode loading with a composite oxide magnetic nanowire and a carbon nanotube and its preparation and an application. The preparation includes steps of (1), mixing hexadecyl trimethyl ammonium bromide, hexamethylene and n-amyl alcohol evenly; then adding oxalic acid solution; after mixing evenly, adding mixed solution containing transition metal ion and cobalt ion; continuously stirring under the room temperature to obtain microemulsion; (2), centrifugally removing impurities and drying in the air to obtain powder; forging in the air to obtain the transition metal/cobalt composite oxide magnetic nanowire; (3), dissolving the transition metal/cobalt composite oxide magnetic nanowire and sodium dodecyl benzene sulfonate in ethylene glycol; after dispersing evenly, immersing a sponge or carbon felt electrode; taking out the sponge or carbon felt electrode and drying; immersing again; repeating the operation for many times to obtain the electrode. The actual application effect is stable and efficient, the electrode loaded with metal oxide/carbon nanotube can be prepared, and the plasma of organic pollutant can be degraded.

The invention discloses a catalyst. A preparation method for the catalyst comprises the following steps: grinding electric furnace dust by using a ball mill, and conducting sieving by using a 75-to-400-mesh sieve; placing the sieved electric furnace dust in a drying oven for drying at a temperature of 75-105 DEG C for 5-48 h so as to obtain pretreated electric furnace dust; and putting the pretreated electric furnace dust and sodium salt solution into a rubber-sealed glass bottle, conducting magnetic stirring in an oil bath pan at 55-105 DEG C for 0.5-5 hours, drying an obtained sample in the drying oven at 75-105 DEG C for 4 hours or more, and conducting sieving with the 75-to-400-mesh sieve to obtain the required sodium-electric furnace dust catalyst. The catalyst has acidity and alkalinity at the same time, and can be automatically separated from a liquid product through standing. The catalyst can be directly used for reaction of low-acid-value oil, the catalytic effect of the catalyst is very good, biodiesel yield is larger than 95%, and the recovery rate of the catalyst is larger than 90%. Moreover, the recycling capability of the catalyst is better, and the yield of biodiesel can still reach 90% or above after 15 times of reactions.

The invention discloses a method for loading nano titanium dioxide on a textile, the textile loaded with the nano titanium dioxide and an application thereof. The method comprises the following stepsof step S1, preparation of a nano titanium dioxide solution: placing nano titanium dioxide particles, an adjuvant and a solvent in a container for mixing, adjusting the pH to be 5 to 10, ultrasonically dispersing for 2 to 5 minutes at 20 to 40kHz to obtain the uniform nano titanium dioxide solution; step S2, a textile loading process: placing the textile in the nano titanium dioxide solution, andperforming the ultrasonic treatment at the temperature of 60 to 95 DEG C for 0.2 to 2h at 20 to 40kHz; and step S3, blocking, fixing and forming: adding a water-dispersible adhesive to fix for 0.5 to1h, and drying and curing at 80 to 120 DEG C. According to the method of the invention, the manufacturing cost is low, the loading fastness of the nano titanium dioxide particles is high, and the problem of agglomeration of the titanium dioxide particles is solved. According to the textile loaded with the nano titanium dioxide prepared by the method provided by the invention, the catalytic actionbetween the nano titanium dioxide particles, air and water molecules is maximized, and the anti-fouling, anti-bacterial and anti-ultraviolet performance of the textile is improved.

The invention discloses a pressure-controlled production device which is a cracking reactor, and an outlet of a raw material container is communicated with a top inlet of a reaction tube I after sequentially passing through a sample injection pump and a preheating tube; a bottom outlet of the reaction tube I is communicated with a top inlet of a reaction tube II after passing through a pressure control valve; a bottom outlet of the reaction tube II is sequentially connected with a product collection bottle and a tail gas absorption bottle after passing through a condensation tube; and a gas bottle for containing inert gas is communicated with a top inlet of the reaction tube II after passing through a rotor flow meter. The invention further provides a method for producing 3, 5-dimethylphenol by using the device, and isophorone is used as a raw material to carry out cracking reaction under the action of a bromine-containing catalyst. According to the invention, the reaction selectivityand conversion rate can be improved.

The invention provides a preparation method of a silver-loaded selectivity-changeable polymer catalyst. According to the preparation method, functional monomers involved in the method are a binary copolymerization functional monomer system for constructing a polymer molecule recognition framework and a movable functional group side chain structure. A substrate and an active component silver precursor are first dissolved in dimethyl sulfoxide for complexing, then the functional monomers, a crosslinking agent and an initiator are added, nitrogen is injected into the solution for deoxidation, the mixture is sealed and put under an ultraviolet lamp to be irradiated for polymerization initiation, and then a catalyst precursor is formed; Ag ions in the catalyst precursor are subjected to sodium borohydride reaction, an obtained product is washed repeatedly with water and ethylene alcohol to remove blotted substrate molecules, and the silver-loaded selectivity-changeable polymer catalyst is obtained after vacuum drying. The silver-loaded selectivity-changeable polymer catalyst can be used for direct preparation of aminobenzyl alcohol from an isomer mixture of nitrobenzyl alcohol and other industrial raw materials. The preparation method has the advantages of being simple in technical principle, making raw materials obtained easily, convenient to operate and making preparation easy.