10 results about "Phosphonium chloride" patented technology

The invention discloses a lignin-based liquid mulching film as well as a preparation method and application thereof, the liquid mulching film is prepared by taking lignosulfonate as a main raw material, compounding the lignosulfonate with chitosan and polyvinyl alcohol to form a basic solution, then carrying out crosslinking modification by epoxy chloropropane and complexing treatment by tetrakis hydroxymethyl phosphonium chloride, and finally adding nano kaolin and uniformly stirring. When in use, the fertilizer is diluted with water and then sprayed on the surface of soil to form a uniform covering film. According to the invention, a phenylpropane structure of lignosulfonate is fully utilized as a rigid framework of a polymer, and the obtained mulching film has good film-forming property, hydrophobicity and heat preservation and moisture conservation performance through a tackifying effect of chitosan, a toughening effect of polyvinyl alcohol and synergistic modification of the cross-linking agent and the complexing agent. The addition of the nano kaolin further enhances the infrared barrier ability of the mulching film and reduces heat loss at night.

The invention discloses a preparation method and application of a catalyst for preparing formic acid from CO2 under high current density, and belongs to the field of CO2 electroreduction. According to the catalyst, InO (OH) is used as a substrate, ionic liquid is introduced to modify the substrate, and the ionic liquid is prepared from corresponding chlorinated quaternary phosphonium salt and trifluoromethanesulfonamide through a reaction. Wherein quaternary phosphonium cations can form a local electric field at a cathode in CO2 electroreduction, a reaction intermediate of formic acid is stably generated, and the product selectivity is greatly improved. Anions have very strong hydrophobicity, remarkably inhibit hydrogen evolution side reaction, have the effect of enriching CO2, and can form a high-concentration CO2 local microenvironment. Under the synergistic effect of anions and cations, the problems that an indium-based catalyst is weak in CO2 adsorption capacity, low in catalytic activity and the like are effectively relieved, and the catalyst still has good formic acid Faraday efficiency under the ampere-level current density. The preparation method is simple and easy to popularize.

The invention relates to an aluminosilicate mineral anion and cation combined collecting agent in a neutral environment. The aluminosilicate mineral anion and cation combined collecting agent is characterized by comprising 2-5 parts of a vegetable oil amide fatty acid collecting agent and 4-10 parts of tetradecyl tributyl phosphonium chloride. The preparation method is simple, and the raw materials are low in price and easy to obtain; the plant oil amide fatty acid collecting agent has carboxyl and amide, and the problems of low temperature resistance, mud resistance, adaptability and other pain points of traditional fatty acid collecting agents such as oleic acid are solved. The aluminosilicate mineral anion and cation combined collecting agent can be used in a neutral environment, the flotation performance of the aluminosilicate mineral anion and cation combined collecting agent is better than that of traditional fatty acid collecting agents such as oleic acid and lauryl amine, and the flotation recovery rate and grade can be effectively improved.

The invention provides diamond wire cutting cooling liquid for silicon carbide wafer cutting, and particularly relates to the field of silicon carbide cutting liquid. The cutting coolant comprises the following components in parts by weight: 5-20 parts of polyol ester, 10-30 parts of fatty alcohol polyoxyethylene polyoxypropylene ether, 0.5-15 parts of poly (4-vinyl benzyl-tri (2-cyanoethyl) phosphonium chloride, 1-5 parts of a catalyst, 1-5 parts of a defoaming agent and 1-5 parts of an antioxidant. The cleaning agent is prepared from the following components in parts by weight: 0.01 to 1 part of aromatic acid, 0.05 to 2 parts of macromolecular viscosity modifier, 0.05 to 5 parts of zinc dialkyl dithiophosphate, 2 to 20 parts of alkynediol gemini surfactant, 0.1 to 2 parts of pH regulator, 0 to 20 parts of organic solvent, 0.02 to 2 parts of organic silicon defoaming agent and 10 to 50 parts of deionized water. The diamond wire cooling liquid for silicon carbide wafer cutting provided by the invention has the characteristics of large boundary lubricating film thickness and high boundary lubricating film strength. The cutting mode of the silicon carbide wafer from the diamond powder abrasive mortar and the steel wire is replaced by the diamond wire cutting mode, and the purposes of improving the cutting efficiency, reducing TTV, improving surface line marks and reducing the smudginess rate are achieved.

The application discloses a PVA flame-retardant composite film with a cross-linking structure and a preparation method thereof, and belongs to the technical field of composite films. The preparation method comprises the following steps: S1, preparing a polyethyleneimine aqueous solution and a tetra(hydroxymethyl)phosphonium chloride aqueous solution respectively; S2, heating and dissolving PVA particles with distilled water as a solvent to obtain a PVA aqueous solution glue; uniformly mixing the polyethyleneimine aqueous solution and / or the tetra(hydroxymethyl)phosphonium chloride aqueous solution with the PVA aqueous solution glue, heating and standing to obtain a mixed glue; and adding the mixed glue into a mold, performing constant-temperature and constant-humidity drying treatment to obtain the PVA flame-retardant composite film with the cross-linking structure. The composite film has the characteristics of good flame retardancy and high strength.

The invention discloses a nanoparticle electrocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing NiCl2. 6H2O, tetrabutyl phosphonium chloride and ethylene glycol, and heating to obtain a deep eutectic solvent DESs; and placing the DESs in a microwave reactor for microwave reaction to obtain the nanoparticle electrocatalyst. The method has the remarkable advantages of being simple in process, rapid in reaction (only in minute level), low in cost, easy to industrially amplify and the like. The prepared Ni3P-Ni12P5 heterostructure nanoparticles have the characteristics of uniform morphology, good crystallinity and the like, and show excellent catalytic activity and stability in an electro-catalytic hydrogen evolution reaction. Particularly, the microwave-assisted one-step synthesis method avoids the complexity of the traditional multi-step process, and provides a new idea for large-scale preparation of the high-performance electrocatalyst.

The invention relates to a tetrahydrogeranyl quaternary phosphonium salt compound as well as a preparation method and application thereof in preventing and treating plant diseases, and belongs to the technical field of agricultural chemistry. According to the preparation method, tetrahydrogeranyl halide and a corresponding phosphine reagent are subjected to a reflux reaction in an organic solvent, the yield is high, and the process is simple. The compound, especially the tetrahydrogeranyl triphenyl phosphonium salt, has excellent inhibitory activity on a variety of plant pathogenic fungi such as rhizoctonia solani, decumbent pine mushroom and phytophthora parasitica var nicotianae, IC50 of tetrahydrogeranyl triphenyl phosphonium chloride on decumbent pine mushroom is as low as 0.95 mg / L, and the effect of tetrahydrogeranyl triphenyl phosphonium chloride is remarkably superior to that of a control pesticide chlorothalonil. The invention provides a novel candidate compound for developing a novel agricultural bactericide which is efficient and low in toxicity and is derived from natural products.

The application discloses an ethyne hydrochlorination reaction catalyst, which is prepared by stirring nitrogen-containing precursors, phosphorus-containing precursors, copper sources and organic solvents uniformly, drying, high-temperature calcination and acid washing; the nitrogen-containing precursors are one or more of 1-butyl-3-methyl imidazole bromide, 1-butyl-3-methyl imidazole chloride, 2-methyl imidazole and pyridine; the phosphorus-containing precursors are one or more of phosphoric acid, triphenyl phosphine, tetraphenyl phosphonium bromide and tetraphenyl phosphonium chloride; and the copper source is copper chloride or copper nitrate. The catalyst obtained by the application has the advantages of high stability and high activity.

The invention discloses a method for continuously preparing THPC, and particularly relates to a system and a method for continuously preparing tetrakis hydroxymethyl phosphonium chloride based on sodium hypophosphite byproduct tail gas and a urea initial condensation body of tetrakis hydroxymethyl phosphonium chloride. Pretreating the sodium hypophosphite byproduct tail gas to remove impurities; continuously introducing the purified tail gas, formaldehyde and hydrochloric acid into a system formed by connecting 4-6 reaction kettles in series according to a specific molar ratio, and carrying out multi-stage countercurrent reaction; the reaction endpoint is accurately regulated and controlled by monitoring the density and the formaldehyde concentration of the last-stage reaction liquid on line and feeding back and controlling feeding; the reaction completion liquid enters an evaporator with a silicon carbide heat exchange crack tube as a core for continuous concentration; and finally, carrying out online pH regulation and filtration to obtain a THPC product, and further carrying out continuous condensation with urea. According to the invention, the safe and high-valued utilization of the industrial tail gas with complex components is realized, the industrial problems of equipment corrosion, product quality fluctuation and the like are overcome through whole-process continuity and intelligent control, and the production efficiency and the product stability are remarkably improved.

The invention belongs to the technical field of oil exploitation, and particularly relates to an anti-swelling clay stabilizer as well as a preparation method and application thereof. The preparation method comprises the following steps: adding 2-allyloxymethyl-2-methylolpropane-1, 3-diol into a reactor, adding sulfamic acid, and carrying out heat preservation reaction; distilled water, N-acryloyl (trihydroxymethyl) aminomethane, octadecyl dimethyl allyl ammonium chloride, allyl tributyl phosphonium chloride and buffer salt are sequentially added into the reactor, and the pH value is adjusted; dropwise adding an initiator, after dropwise adding is completed, carrying out heat preservation reaction, adding ethanol, precipitating, centrifuging, and drying overnight to obtain the clay stabilizer. The clay stabilizer disclosed by the invention has the advantages of high anti-swelling rate and washing resistance.