39results about How to "Regular channel structure" patented technology

The invention discloses a removal method for organic pollutants based on microporous mineral absorption and coupling as well as microwave degradation, comprising the following main steps of: filling a hydrophobic microporous mineral adsorbent in absorption columns to adsorb organic pollutants in organic wastewater; and starting a microwave generator to degrade the organic pollutants adsorbed in the absorption columns under a microwave induction after the adsorbent is saturated. Continuous treatment on the organic wastewater is realized via the alternate operation and regeneration of the two absorption columns. The removal method for organic pollutants based on microporous mineral absorption and coupling as well as microwave degradation disclosed by the invention realizes efficient removal and degradation for the organic pollutants from a water body and cyclic utilization for a carrier via hydrophobic microporous mineral absorption and coupling as well as microwave induced degradation technology, and thoroughly mineralizes the pollutants into non-toxic and harmless micro-molecular substances, so that the removal method can be used for pollution abatement for underground water, surface water and drinking water. The removal method disclosed by the invention is suitable for treatment on various water-soluble polar organic pollutants.

The invention relates to a method for electrochemical synthesis of Cu3 (BTC) 2 and belongs to the field of preparation technologies of catalytic material and nanometer material. The method comprises the following steps: preparing a mixed solution of 1-butyl-3 methylimidazole bromide, trimesic acid, methyl alcohol and ethyl alcohol, adopting a copper electrode as an anode and a platinum electrode as a cathode, and adjusting the impressed voltage through a mixed solution of EDTA and DETA for electrolysis to obtain the Cu3 (BTC) 2 material. According to the invention, the adopted raw materials are cheap and easy to obtain, the operation is simple and easy, the preparation method is simple and easy to control, the equipment requirements are low, the environmental friendliness is achieved, and the Cu3 (BTC) 2 material is of a regular octahedron structure and has a diameter of 10-20 nm and a specific area of 950 m<2>g<-1>; the test conditions of the reaction are as follows: 500 ppm of NO, 500 ppm of NH3, 5% of O2, N2 as balance gas, the total flow of exhaust gas being 100ml / min, and the denitration catalytic efficiency reaching 100% at 230-280 DEG C.

The invention discloses a cholesterol derivative, an O / W / O multi-phase gel emulsion prepared from the cholesterol derivative, and a method for preparing a porous silicon dioxide bulk material from the emulsion. The structural formula of the cholesterol derivative is as shown in the description, wherein n is an integer of 6 to 12, and R represents a C1-C4 alkyl group. The O / W / O multi-phase gel emulsion is prepared according to a one-step method by taking the cholesterol derivative as a sing surfactant and taking a silanization reagent as an oil-phase material, and is high in stability, stable to acid and alkali, uniform in droplet distribution, and high in water-phase content which is 80 to 97 percent of the total volume. The porous silicon dioxide bulk material is prepared by taking the O / W / O multi-phase gel emulsion as a template at an ammonia gas atmosphere. The method is simple and low in cost; the prepared silicon dioxide bulk material is low in density, and has rich hierarchical porous structures which are regular and high in permeability; moreover, the porous silicon dioxide bulk material is large in surface area, high in heat stability, adjustable in hydrophilicity and hydrophobicity, and excellent in water or oil adsorption property.

The invention provides a preparation method and denitrification application of mesoscale-controlled multi-level core-shell structure bimetallic MOF-74 (Co-Cu). The catalyst selects cobalt-containing long-chain organic molecular salts and organic ligands for high-efficiency coordination, and performs special surface treatment on them, and then undergoes crystal post-synthesis modification in a low-temperature steam environment to make Cu metal nanoparticles modified by surfactants Multi-level core-shell structure composites with different thicknesses are self-grown on the surface of the Co precursor, and the prepared catalyst has a large specific surface area, good dispersion, and high selectivity. The catalyst prepared by the invention has excellent low-temperature catalytic denitrification activity, and the conversion rate of nitrogen oxides in the operating window of 200-275°C reaches over 96%.