10results about How to "Promote depolymerization" patented technology

The invention discloses coal gasification slag-based self-foaming lightweight concrete and a preparation method thereof, and relates to the field of comprehensive utilization of lightweight foam concrete and solid wastes. The coal gasification slag-based self-foaming lightweight concrete is prepared from the following components in parts by weight: 50 to 60 parts of coal gasification fine slag, 20 to 30 parts of waste incineration bottom ash, 10 to 30 parts of composite admixture, 5 to 20 parts of composite exciting agent, 20 to 40 parts of fine aggregate, 40 to 60 parts of water, 0.3 to 0.5 part of sodium lactate, 0.3 to 0.5 part of water reducing agent, 0.3 to 0.7 part of cellulose ether and 0.3 to 0.5 part of redispersible latex powder. The invention has the advantages of low manufacturing cost, small environmental pollution, simple process flow, multiple curing modes and excellent performance in various aspects, can replace the traditional foam concrete, can effectively reduce the use of cement-based cementing materials, and promotes the recycling and large-scale utilization of solid waste materials.

The invention discloses a method for producing biogas through anaerobic fermentation of straws, and belongs to the field of solid waste treatment, the method comprises the following steps: carrying out hydrothermal pretreatment on the straws to obtain a solid-liquid mixture, and carrying out anaerobic fermentation on the solid-liquid mixture by taking sludge as an inoculum to produce biogas. Straw and polylactic acid are potential high-quality fermentation substrates and are converted into biogas through anaerobic fermentation, so that the utilization rate of waste is increased, and secondary pollution to the environment is reduced.

The invention discloses a method for preparing guaiacol monomer products by catalyzing selective hydrogenolysis of lignin through aluminum oxide loaded nickel and nickel-tin alloy. The catalyst simultaneously containing metal nickel and nickel-tin alloy active phases is prepared by adopting a urea precipitation method, organic soluble lignin is taken as a raw material, a mixture of alcohol substances and water is taken as a solvent, and the aluminum oxide loaded metal nickel and nickel-tin alloy catalyst prepared by adopting the urea precipitation method is added; and replacing air in the reaction kettle with inert gas, pressurizing to 1.0-3.0 MPa, and stirring at 210-270 DEG C for 1-6 hours to convert the organic soluble lignin into a compound mainly comprising guaiacol monomer products with high selectivity. The catalyst is simple in preparation process and low in cost, the lignin depolymerization reaction has the advantages of mild conditions, safe operation process and the like, and the obtained guaiacol product can be used for preparing chemicals such as food additives or medical intermediates.

The invention discloses coal gangue-based light high-strength unfired ceramsite and a preparation method thereof, and relates to the technical field of preparation of building materials. The gangue-based light high-strength unfired ceramsite is prepared from the following components in parts by weight: 30 to 40 parts of gangue, 20 to 30 parts of cement, 30 to 50 parts of a composite admixture, 40 parts of water, 0.5 to 2 parts of an air entraining agent, 0.05 to 0.2 part of a foam stabilizer, 0.1 to 0.25 part of a waterproof agent and 0.5 to 2.0 parts of carboxymethyl cellulose. The coal gangue, the steel slag and the high-calcium fly ash selected in the invention have relatively high content of SiO2 and Al2O3, the slag contains a large amount of CaO, the industrial byproduct gypsum promotes generation of ettringite by exciting the slag, a silicon-aluminum compound is depolymerized under the action of alkalinity and sulfate, and is subjected to hydration reaction with alkaline components, so that the content of the silicon-aluminum compound is reduced; and polymerizing to generate gelling hydration products such as hydrated calcium silicate gel, hydrated calcium aluminosilicate gel and the like.

The invention relates to the technical field of foreign flavor removal, in particular to a method for removing foreign flavor in wine, base wine is subjected to ultrasonic oscillation, the ultrasonic power density is controlled to be 140-230 W / cm < 2 >, the ultrasonic frequency is 16.0-17.0 kHz, the ultrasonic duty ratio is 20-33%, the pulse width is 67-84, and the treatment time is 10-20 min. In the prior art, modes of natural volatilization, filtration, activated carbon adsorption and the like are slow in effect, long in occupied time and fund cycle, uncontrollable in result or reduced in wine quality. According to the present invention, with the energy of more than 200 W per square centimeter, the great activation energy is provided for the molecules in the wine body, such that the low-boiling point foreign flavor component moves in the wine at the light velocity, the mutual collision opportunity is substantially increased, and the instantaneous high temperature and the instantaneous high pressure are formed at the collision moment so as to make the low-boiling point foreign flavor component enter the wine body; components such as pickled vegetable flavor, muddy flavor, musty flavor, vinasse flavor, oil rancidity and other stink, strange flavor, peculiar smell and the like are changed into bubbles to be volatilized and escaped.

The present application relates to a kind of nitrogen-containing heterocyclic compounds and its preparation method, pharmaceutical composition and application.The structure formula of the above-mentioned nitrogen-containing heterocyclic compound is as follows:Wherein, Y and Z are respectively selected from one of-CH and-N;R 1 And R 2 Are respectively selected from one of substituted aryl, unsubstituted aryl, substituted heteroaryl and unsubstituted heteroaryl.The above-mentioned nitrogen-containing heterocyclic compound is combined with tubulin colchicine binding site on one hand, promotes microtubule depolymerization, inhibits tumor cell proliferation;On the other hand, by combining with the ATP binding site of protein kinase inhibits kinase activity, thereby realizing multi-pathway simultaneous inhibition of tumor cell proliferation and survival.Compared with paclitaxel and other drugs for tubulin, it has better water solubility, simpler structure, easier synthesis and better drug resistance.

This invention discloses a method for the selective hydrogenolysis of lignin using alumina-supported nickel and nickel-tin alloy catalysts to prepare guaiacol monomers. The method employs a urea precipitation method to prepare a catalyst containing both metallic nickel and a nickel-tin alloy active phase. Organosoluble lignin is used as the raw material, and a mixture of alcohols and water is added as the solvent. The alumina-supported nickel and nickel-tin alloy catalyst prepared by the urea precipitation method is then added. The air in the reactor is replaced with an inert gas, and the pressure is increased to 1.0–3.0 MPa. The reactor is then stirred at 210–270°C for 1–6 hours, resulting in the highly selective conversion of organosoluble lignin into compounds primarily composed of guaiacol monomers. This invention features a simple catalyst preparation process, low cost, and a mild and safe lignin depolymerization reaction. The obtained guaiacol products can be used to prepare food additives or pharmaceutical intermediates and other chemicals.

The invention provides a method for synchronously treating sludge lysate and microplastics by using sulfate free radicals, and belongs to the technical field of sludge treatment. The method comprises the following steps: naturally settling residual sludge to obtain a sludge sample; then mixing the sludge sample with ferrate and sulfite, and performing pretreatment to obtain pretreated sludge; and finally, mixing the pretreated sludge, fresh sludge and micro-plastics, and carrying out anaerobic fermentation. The Fe (VI) / S (IV) free radical advanced oxidation method is adopted to treat the excess sludge and destroy cell walls and extracellular polymeric substances (EPS), so that intracellular water and EPS combined water are released, sludge solubilization is promoted, the concentration of volatile acid in the excess sludge fermentation process is obviously increased, and the proportion of acetic acid in the total volatile acid is increased. Meanwhile, micro-plastics in the sludge are effectively aged and depolymerized under the action of microorganisms and free radicals in the process.

This invention discloses a method for the degradation and recycling of PA6, relating to the field of solid waste resource utilization technology. The method includes the following steps: mixing waste PA6 with aluminum chloride and carrying out a depolymerization reaction at a temperature of 160-240℃; the depolymerization reaction is a solid-solid reaction. This invention mixes waste PA6 and aluminum chloride in a certain proportion, and achieves rapid and efficient degradation and recycling of PA6 in 0.5-1.5 hours at a low depolymerization temperature of 160-240℃ using a one-pot method without special atmosphere, solvent, or high-pressure reactor. This method not only has a fast degradation rate but also high PA6 conversion rate and good product selectivity.