151 results about "Phosphonium salt" patented technology

The invention discloses an amphiphilic chitosan and plant nanocellulose composite coating fresh-keeping material, which is prepared from the following ingredients in percentage by mass: 0.5 to 20 percent of amphiphilic chitosan, 0.1 to 5.0 percent of plant nanocellulose, 0.5 to 10.0 percent of coalescing agents, 0.1 to 3.0 percent of antioxidants and the balance deionized water. Wherein the amphiphilic chitosan is prepared from chitosan, quaternary phosphonium salt and sorbic acid. Amphipathic chitosan of the material has hydrophilic groups such as amino and carboxyl and a sorbate hydrophobic group, has hydrophilicity and hydrophobicity at the same time, and is extremely easy to combine with substances such as a coalescing agent, plant nanocellulose and an antioxidant to form a stable polymeric membrane layer, so that the mechanical property after membrane formation is remarkably improved, and the material has a good application prospect. Meanwhile, the plant nanocellulose particles can be stably coated in the polymeric membrane material layer, so that the mechanical property of the material is enhanced, and lasting and efficient antibacterial and antioxidant effects are realized. The invention further discloses a preparation method and application of the amphiphilic chitosan and plant nanocellulose composite coating fresh-keeping material.

The invention relates to the technical field of plastics, and discloses an anti-aging modified plastic and a preparation method thereof.The preparation method comprises the following steps that low-density polyethylene, maleic anhydride grafted polyethylene, an antioxidant 168, calcium stearate, calcium carbonate, 2-(2 '-hydroxy-3', 4 '-dihydroxyphenyl)-1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and a plasticizer are mixed, stirred and stirred, and The preparation method comprises the following steps: uniformly mixing 4, 5 '-di-tert-butylphenyl)-benzotriazole, quaternary phosphonium salt modified chitosan and modified magnolol in a high-speed mixer, carrying out extrusion granulation in a twin-screw extruder at a blending temperature of 190-195 DEG C and an extrusion temperature of 170-180 DEG C, drying, and carrying out injection molding by an injection molding machine to obtain the anti-aging modified plastic. The anti-aging modified plastic disclosed by the invention has relatively good anti-aging, flame-retardant and antibacterial effects.

The invention discloses a preparation method of an environment-friendly macromolecular organic flocculant by taking tannic acid and quaternary phosphonium salt as raw materials, and relates to the technical field of solid waste resource utilization and water treatment medicaments. A natural polyphenol compound tannic acid and allyltributylphosphonium bromide are subjected to an addition polymerization reaction under the action of an initiator ceric ammonium nitrate to generate the environment-friendly polymeric flocculant with a branched structure, and the environment-friendly polymeric flocculant is high in charge density and large in molecular weight, has a branched long-chain structure, and can be used for preparing the environment-friendly polymeric flocculant. The sewage treatment agent can efficiently remove pollutants in water under the condition of low dosage, can adapt to various wastewater treatment scenes, is wide in application range, and has higher economical efficiency and environmental friendliness.

The invention discloses a flame-retardant wear-resistant conveying belt for a coal mine and a preparation method thereof, and belongs to the technical field of wear-resistant conveying belts. Substances such as calcium nitrate tetrahydrate, ferric nitrate nonahydrate and antimony trioxide are subjected to hydrothermal coprecipitation to obtain multifunctional composite microspheres, the microspheres are aminated through a silane coupling agent KH-550 and then coated with silicon carbide, and coated composite microspheres are obtained; the preparation method comprises the following steps: carrying out graft copolymerization on nitrile rubber, octavinyl silsesquioxane and DOPO acrylate, compounding a quaternary phosphonium salt flame retardant to obtain modified nitrile rubber, carrying out three-stage mixing on the modified nitrile rubber, coated composite microspheres, conductive carbon black and other substances to obtain a rubber coating layer, carrying out double-sided calendering on the rubber coating layer and an epoxy resin plasticized aramid fiber skeleton layer, and carrying out vulcanization molding to obtain the composite material. And finally obtaining the flame-retardant wear-resistant conveying belt for the coal mine. The synergistic effect of high flame retardance, strong wear resistance and static electricity resistance is achieved, and the service life is prolonged.

The present invention discloses a low-odor phosphazene catalyst and its use. The catalyst comprises a phosphazene cation represented by the general formula (I) and an alkali metal salt compound anion. The catalyst is prepared by dissolving a phosphorus pentahalide and a guanidine compound in a non-benzene-based organic solvent and reacting them under heated conditions to obtain an organic phosphonium salt solution containing the organic solvent and the phosphorus halide compound. An alkali metal salt compound is then added and reacted under heated conditions in an inert atmosphere to obtain a purified phosphazene catalyst through filtration, reduced-pressure distillation, purification, and vacuum drying. The catalyst can be used in the production of polyether polyols and polyurethane foams. The phosphazene catalyst of the present invention employs a non-benzene-based inert solvent that does not participate in the reaction during production, eliminating the need for frequent solvent changes. Using the same solvent eliminates steps such as extraction and distillation, reducing energy consumption and wastewater generation during the process. The continuous production method for the phosphazene catalyst is efficient and environmentally friendly.

This invention relates to an antibacterial copolyamide and its preparation method. The antibacterial copolyamide comprises a polyamide A structure formed by hexamethylenediamine and a dodecanoic acid, at least one polyamide B structure other than polyamide A, and an antibacterial agent C structure. The polyamide B structure is formed by at least one diacid b1 and at least one diamine b2, and / or by ring-opening of a lactam b3. The antibacterial agent C structure contains a quaternary phosphonium salt group and is formed by a quaternary phosphonium salt antibacterial agent containing a carboxylic acid group and the diamine b2. The melting point of the antibacterial copolyamide is 180℃~210℃. The antibacterial copolyamide of this invention exhibits good antibacterial stability, possesses highly efficient and long-lasting antibacterial effects, and does not affect the transparency of the polyamide itself.

The application discloses a preparation method of beta-carotene, which comprises the following steps: 3-methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienyl triphenyl phosphonium salt (C15 phosphonium salt) cis-trans isomer and 2,7-dimethyl-2,4,6-octatriene-1,8-dial (C10) are dissolved in a water and a water incompatible solvent system, and Wittig reaction is generated under the action of an alkali. The reaction system can avoid that by-product inorganic salt is wrapped in the product, and the content of inorganic salt impurities in the product is reduced. In addition, the proportion of C15 phosphonium salt cis-trans isomer is controlled, a C15 phosphonium salt hydrolysis side reaction is inhibited, and the reaction yield is improved.

The invention discloses a resource utilization method of low-quality C15 phosphonium salt. The preparation method comprises the following steps: (1) performing thermal decomposition reaction and isomerization reaction on the low-quality phosphonium salt to generate the C15 phosphonium salt; (2) adding a solvent into the reaction liquid obtained in the step (1) for extraction and phase separation, and collecting a product phase containing a C15 phosphine salt isomer; and (3) adding pentacaraldehyde and carbonate into the product phase containing the phosphonium salt, and carrying out condensation reaction to prepare the vitamin A acetate. According to the method, the low-quality phosphonium salt generated in the C15 phosphonium salt production process can be recycled, the produced low-grade vitamin A acetate is sold, the product mark is enriched, and the industrial competitiveness of the product is improved. The process is simple to operate, mild in reaction condition, green and environment-friendly, free of waste liquid and suitable for industrial production, and the industrial chain cost of the vitamin A acetate is greatly reduced.

The invention discloses a preparation method of beta-carotene. The preparation method comprises the following steps: dissolving an aqueous solution of 3-methyl-5-(2, 6, 6-trimethyl-1-cyclohexene-1-yl)-2, 4-pentadienyl triphenylphosphine salt (C15 phosphine salt) and 2, 7-dimethyl-2, 4, 6-octtriene-1, 8-dialdehyde (C10) cis-trans isomer in a solvent, carrying out wittig reaction under the action of alkali, and carrying out isomerization to obtain the product. By controlling the proportion of C10 cis-trans isomers of the reaction system, the content of the C25 aldehyde intermediate can be reduced, and the reaction yield and the product quality can be improved.

The invention discloses a cinnamyl aldehyde derivative-based 1-hydroxy-1-sodium sulfonate structural compound as well as a preparation method and application thereof, and belongs to the technical field of preparation of agricultural chemicals. The structural general formula of the compound is shown as a formula (I). The preparation method of the compound comprises the following steps: dropwise adding a homogeneous phase B system consisting of sodium hydrogen sulfite, a quaternary phosphonium salt phase transfer catalyst and water into a homogeneous phase A system consisting of a compound shown in a formula (II) and an organic solvent, and carrying out nucleophilic addition reaction to obtain the compound shown in the formula (I). The preparation method is simple, reaction conditions are mild, and the obtained compound is good in environmental compatibility, has high biological activity on soil pathogens (bacteria, fungi, root-knot nematode and the like), can be widely applied to prevention and treatment of soil-borne diseases, and provides material guarantee for safe production of crops.

A method of preparing an ionic liquid includes the following steps. A halogen-containing compound is reacted with a first compound to form a second compound. The halogen-containing compound includes a halohydrocarbon, a sulfonyl halide, or a combination thereof. The first compound includes an amine compound having a tertiary amine group, a phosphine compound, or a combination thereof. The second compound includes a first quaternary ammonium salt, a first quaternary phosphonium salt, or a combination thereof. The second compound and a lithium salt are reacted in a microwave device to form a third compound. The third compound includes a second quaternary ammonium salt, a second quaternary phosphonium salt, or a combination thereof. Anions of the second compound and the third compound are different. A microwave power of the microwave device is 700 watts to 1400 watts.

The invention discloses a cellulose antibacterial coating, and belongs to the technical field of cellulose, and the cellulose antibacterial coating comprises the following components in parts by weight: 8 to 15 parts of TPP modified cellulose, 1 to 2 parts of heptadecafluorodecyl trimethoxysilane, 1 to 1.5 parts of isocyanate, 0.3 to 0.7 part of nano silicon dioxide, 65 to 70 parts of absolute ethyl alcohol, and 18 to 20 parts of tetrahydrofuran. According to the invention, a flexible alkyl chain is combined with a rigid quaternary phosphonium salt TPP molecule, so that the limitation of a single mechanism of a traditional antibacterial agent is broken through; chemical bond anchoring is realized by a silane pre-hydrolysis oriented grafting technology; according to the method, electrostatic spraying and vapor deposition are combined, efficient coating preparation of a cross-scale base material is achieved, and a reliable solution is provided for large-scale application of the cellulose antibacterial coating in the fields of medical treatment, food packaging, environmental engineering and the like through multi-mechanism cooperation, chemical bonding and intelligent surface design.

The application discloses a photoresist stripping agent composition containing a sulfur alkyl single-head quaternary phosphonium salt quaternary phosphonium salt, a preparation method and application thereof. The composition comprises, in parts by weight, 1-5 parts of the sulfur alkyl single-head quaternary phosphonium salt, 65-75 parts of an organic solvent, 10-15 parts of an organic alcohol amine, 1.5-5 parts of a corrosion inhibitor, 0.1-0.5 parts of a defoaming agent and 1-2 parts of a wetting agent. The stripping agent has the advantages of fast stripping speed, strong stripping capacity, maintained stripping performance at a lower temperature, low corrosiveness to various substrates such as metals, silicon and silicon oxide, good water solubility, easy cleaning and good application prospect in the fields of semiconductor wafer cleaning and the like.

The application discloses a preparation method of an apophenine intermediate C25 aldehyde, wherein decandial and C15 phosphonium salt are reacted under the action of a solid base catalyst, and the solid base catalyst is a supported catalyst loaded with fluorine, calcium, zirconium and cobalt; compared with the preparation method of a kettle reactor in the prior art, the preparation method significantly improves the conversion rate of raw materials and the selectivity of products, and the yield is 90-95%, and the preparation method has a good application prospect in large-scale industrial production.

The invention relates to a transparent flame-retardant glass fiber reinforced polycarbonate material capable of being subjected to laser welding and a preparation method of the transparent flame-retardant glass fiber reinforced polycarbonate material. The transparent flame-retardant glass fiber reinforced polycarbonate material is prepared from the following components in parts by weight: 50 to 60 parts of silicon-containing polycarbonate resin, 10 to 40 parts of regenerated polycarbonate resin, 10 to 30 parts of HR glass fiber, 0.2 to 0.4 part of organic silicon microspheres, 0.1 to 0.3 part of a dispersing agent and 0.2 to 0.4 part of an antioxidant, the organic silicon microspheres are selected from one or more of sulfonate-containing organic silicon microspheres and quaternary phosphonium salt-containing organic silicon microspheres. The HR glass fibers and the organic silicon microspheres are cooperatively introduced into the material, so that the polycarbonate material simultaneously meets the requirements of flame retardance and high light transmittance, and the performance of ultrahigh near-infrared light transmittance and halogen-free flame retardance is obtained.

The present disclosure relates to a composition comprising: (a) a cationic polymerization initiator; and (b) an indene based or cyclopentadiene based resin; wherein the cationic polymerization initiator is selected from the group consisting of (i) an aromatic sulfonium salt-based cationic polymerization initiator; (ii) a phosphonium salt-based cationic polymerization initiator; (iii) a quaternary ammonium salt-based cationic polymerization initiator; (iv) an aluminum complex-based cationic polymerization initiator; (v) an aromatic iodonium salt-based cationic polymerization initiator; (vi) an aromatic diazonium salt-based cationic polymerization initiator; (vii) a pyridinium-based cationic polymerization initiator and (viii) a mixture thereof. Also described are varnishes and coatings formed from said composition.

A method of manufacturing a photoelectric conversion element according to the present disclosure includes a step of forming a first electrode, a step of forming a photoelectric conversion layer, and a step of forming a second electrode. The step of forming the photoelectric conversion layer includes: preparing a mixed solution by mixing a solution in which at least one salt selected from the group consisting of a phosphonium salt and a sulfonium salt is dissolved with a precursor solution of a perovskite compound; and forming a coating film using the mixed solution.

The invention provides a corrugated paper digital printing water-based pigment combined ink and a printing method thereof, the corrugated paper digital printing water-based pigment combined ink comprises cation white ink and anion color ink by weight percentage; the cationic white ink is prepared from 10%-60% of phosphorus onium salt polyurethane resin, 10%-30% of a first humectant, 1%-10% of a nonionic alkyne glycol gemini surfactant, 20%-30% of cationic ground white ink color paste and the balance of deionized water; and the anionic color ink comprises 20%-30% of anionic polyurethane resin, 10%-25% of a second humectant, 2%-8% of an alkyl ether sulfate anionic surfactant, 25%-40% of anionic ground color paste and the balance of deionized water. The technical problems that existing corrugated paper digital printing water-based pigment ink is poor in color expression, insufficient in printing stability, poor in physical performance and contradictory in environmental protection property and applicability are solved.

This invention relates to a novel, highly efficient bactericide and its preparation method, belonging to the field of antibacterial materials technology. The invention utilizes the reaction of epoxy groups and tertiary amine compounds in maleic pine carboxylic acid glyceride under hydrochloric acid to convert the epoxy groups into a hydroxyl quaternary ammonium salt structure. Then, an esterification reaction between trimellitic anhydride acyl chloride and hydroxyl groups is used to introduce an anhydride group into the molecular chain. Finally, an esterification reaction between anhydride and hydroxyl groups is used to introduce quaternary phosphonium salt and silver citrate structures into the molecular chain, resulting in a novel, highly efficient bactericide. The novel, highly efficient bactericide prepared by this invention simultaneously contains quaternary ammonium salt, quaternary phosphonium salt, and metallic silver ions. The positively charged quaternary ammonium salt and quaternary phosphonium salt are adsorbed onto the negatively charged bacterial surface through electrostatic interactions, exerting antibacterial and bacteriostatic effects by altering membrane permeability. The silver ions in silver citrate can bind to the sulfhydryl and carboxyl groups of bacterial membrane proteins, disrupting membrane integrity and thus exerting antibacterial and bacteriostatic effects.

The invention discloses a preparation method of beta-apo-8 '-carotene acid ethyl ester, which comprises the following steps: reacting C10 dialdehyde, C5 phosphonium ester and / or C5 phosphonium salt in the presence of an unsaturated dinitrogen heterocyclic compound under an alkaline condition to generate a C15 aldehyde ester intermediate; the method comprises the following steps: reacting a C15 aldehydeester intermediate with a C15 phosphonium salt in the presence of an unsaturated dinitrogen heterocyclic compound under an alkaline condition, and carrying out an isomerization reaction after the reaction is finished to generate beta-apo-8 '-carotene acid ethyl ester; the method is simple and efficient to operate and mild in reaction condition, the prepared apoate crystal is high in all-trans content, low in impurity residue, small in average size and free of agglomeration, and production of downstream preparations is facilitated; particularly, the unsaturated dinitrogen heterocyclic compound serving as the catalyst is wide in source, easy to obtain, low in cost and beneficial to industrial application.

The application discloses a photoresist degreasing agent composition containing a single-head quaternary phosphonium salt and a preparation method and application thereof. The composition comprises, in parts by weight, 1-5 parts of the single-head quaternary phosphonium salt, 65-75 parts of an organic solvent, 10-15 parts of an organic alcohol amine, 1.5-5 parts of an inhibitor, 0.1-0.5 parts of an antifoaming agent and 1-2 parts of a wetting agent. The degreasing agent has the advantages of fast degumming speed, strong degumming capacity, maintained degumming performance at a lower temperature, low corrosiveness to various substrates such as metals, silicon and silicon oxide, good water solubility, easy cleaning and good application prospect in the fields of semiconductor wafer cleaning and the like.

The utility model relates to the technical field of wastewater treatment, and discloses an anaerobic-oxidation device for treating wastewater containing organic quaternary phosphonium salt, which comprises a tank, a primary sedimentation tank and a secondary sedimentation tank are arranged in the tank, a filter screen is arranged between the primary sedimentation tank and the secondary sedimentation tank, and an anaerobic reaction tank and an oxidation reaction tank are arranged on the edge of the secondary sedimentation tank; a second partition plate is arranged between the secondary sedimentation tank and the anaerobic reaction tank, a third partition plate is arranged between the anaerobic reaction tank and the oxidation reaction tank, a baffle is arranged above the third partition plate, a driving assembly is connected above the baffle, and the driving assembly is used for controlling the baffle to move up and down; two U-shaped blocking strips are arranged at the top of the third partition plate, and the left ends and the right ends of the two U-shaped blocking strips are connected with the inner wall of the pool. According to the utility model, wastewater impurities can be conveniently gathered towards the center, the reaction rate is increased, the scraper rotates to scrape sediments on the bottom plate, and the impurities at the bottom are prevented from being incapable of being in contact with medicaments; the relevance between different reaction tanks is strong, and the transfer efficiency is high.

This invention relates to a perovskite precursor solution remediation additive, regeneration method, and application. The remediation additive is a tetra(hydroxymethyl)phosphonium salt with the general chemical formula [P(CH2OH)4]. + ·X ‑ X represents a halogen; tetra(hydroxymethyl)phosphonium salt simultaneously acts as an organic cation source, a redox buffer for iodine species, and a coordination stabilizer for lead ions in the perovskite precursor solution. This invention demonstrates significant performance recovery: it can chemically repair aged solutions, enabling the film quality and device performance of the regenerated solution to reach over 95% of the level of a freshly prepared solution.

The present invention relates to a process for the preparation of (4Z)-11,11-dialkoxy-4-undecenyl triaryl phosphonium halides of general formula (3-Z), wherein Y represents a halogen atom, Ar represents independently of each other an aryl group, R 1 and R 2 represent independently of each other a monovalent hydrocarbon group having 1 to 15 carbon atoms, or R 1 and R 2 may together form a divalent hydrocarbon group R 1 -R 2 having 2 to 10 carbon atoms, which process comprises: subjecting a (7Z)-11-halo-1,1-dialkoxy-7-undecene compound of general formula (1-Z), wherein X 1 represents a halogen atom, R 1 and R 2 are as defined above, to a phosphonium salt forming reaction with a phosphine compound of general formula (2), wherein Ar is as defined above, to form said compound (3-Z); and also relates to a compound of general formula (A) L(CH2)3CH=CH(CH2)5CH(OR 1 )(OR 2 )(A), wherein R 1 and R 2 are as defined above.

The invention relates to a cyclodextrin grafted polyquaternary phosphonium salt eugenol ester antibacterial material, which has the following structure: m is the number of structural units of cyclodextrin, namely m = 1, m = 2 or m = 3; r1 is-CN or-CH3; r2 is phenyl or butyl; the anion X is one of Br <->, F <->, Cl <->, I <->, OH <->, CN <->, SCN <->, BF4 <->, PF6 <->, SO4 < 2->, CO3 < 2-> or AlCl4 <->, and X refers to the type of the anion; p is 0 or 2; x is 0 or 2; n is the grafting degree; y is the number of structural units of the quaternary phosphonium salt eugenol ester monomer; the product of y and n is the degree of polymerization, and P in-P-(R2) 3 refers to phosphorus element and is positive charge of quaternary phosphonium salt. Meanwhile, the invention further discloses a synthesis method of the antibacterial material. The cyclodextrin grafted polyquaternary phosphonium salt eugenol ester prepared by the invention has excellent antibacterial performance and good biocompatibility, can be applied to antibacterial coatings, medical devices or surface bacteriostasis of daily necessities and the like, and is a novel antibacterial material with potential application prospects.

The invention relates to the technical field of organic synthesis, and provides a synthesis method of tributyl phosphate. The method comprises the following steps: adding a catalytic amount of quaternary phosphonium salt ionic liquid into n-butyl alcohol, respectively conveying the n-butyl alcohol (containing the quaternary phosphonium salt ionic liquid) and phosphorus oxychloride into a tubular reactor for reaction, controlling the esterification temperature to be 2-8 DEG C, neutralizing the effluent reaction liquid with solid sodium hydroxide in a neutralization reaction kettle, controlling the neutralization temperature to be 15-35 DEG C, and carrying out heat preservation for 2-4 hours; a tributyl phosphate crude product is obtained through a filtering device, finally, a tributyl phosphate product is obtained through reduced pressure distillation, the yield is larger than or equal to 95%, and the purity is larger than or equal to 99.5%. The kettle residue after reduced pressure distillation is the quaternary phosphonium salt ionic liquid which can be directly used mechanically without post-treatment. According to the invention, by utilizing the excellent mass transfer and heat exchange performance of the tubular reactor, the dripping time is greatly shortened compared with the traditional kettle reaction, and the equipment cost is greatly reduced compared with the microchannel reactor, so that the production cost of tributyl phosphate is reduced.

The invention relates to the technical field of petroleum drilling fluid, and discloses a lubricant for drilling fluid and a preparation method of the lubricant. The preparation method comprises the following steps: introducing a quaternary phosphonium salt cationic modifier into the interlayer of montmorillonite through cation exchange to enlarge the interlayer spacing, and meanwhile, further grafting 3-(methacryloyloxy) propyltrimethoxysilane to the surface of quaternary phosphonium salt modified montmorillonite to obtain silane cation modified montmorillonite; the preparation method comprises the following steps: carrying out pre-swelling on silane cation modified montmorillonite, a styrene monomer, a triazinyl modified benzoxazine cross-linking agent and a methacrylic acid monomer, and carrying out in-situ soap-free emulsion polymerization to promote high stripping and good dispersion of montmorillonite in a copolymer matrix so as to prepare the modified montmorillonite nano composite microspheres. Methyl silicone oil, modified montmorillonite nano composite microspheres, sorbitan monostearate and oleic acid are stirred and emulsified to obtain the lubricant for the drilling fluid, so that the lubricating property and high temperature resistance of the lubricant are improved.

The invention discloses a polyamide reverse osmosis membrane with the surface grafted with quaternary phosphonium salt and a preparation method thereof, the polyamide reverse osmosis membrane comprises a porous supporting membrane and an aromatic polyamide active layer formed on the surface of the porous supporting membrane, and the surface of the aromatic polyamide active layer is grafted with a modified chain segment containing quaternary phosphonium salt groups through covalent bonds. One end of the modified chain segment is connected with the aromatic polyamide active layer through an amido bond, and the other end of the modified chain segment is a quaternary phosphonium salt group. Through a dual covalent structure of an amido bond and a thioether bond, a quaternary phosphonium salt functional chain segment is stably anchored on the outermost surface of the aromatic polyamide active layer, so that the possibility of migration, loss and function attenuation of a quaternary phosphonium salt functional component in a long-term operation process is reduced; therefore, the reverse osmosis membrane has long-acting and stable antibacterial and anti-biological pollution performance.

The application relates to the technical field of adsorbing silica gel, and discloses a preparation method of high-porosity adsorbing silica gel. In the application, styrene, acrylic acid and a modified crosslinking agent are polymerized to obtain modified polystyrene microspheres; the silicon hydroxyl generated by hydrolysis of triethoxysilyl in a silane coupling agent type quaternary phosphonium salt and the carboxyl on the surface of the modified polystyrene microspheres are subjected to a dehydration condensation reaction to obtain quaternary phosphonium salt grafted modified polystyrene microspheres; the quaternary phosphonium salt grafted modified polystyrene microspheres are used as sacrificial space-occupying templates; and a sol-gel process is combined to synchronously construct a double-stage hierarchical pore structure, so that the porosity of the adsorbing silica gel is improved.

A non-metal catalyst for synthesizing polycarbonate by CO2 and a preparation method therefor are provided. The preparation method of the non-metal catalyst includes the following steps: dissolving a hydroxyl functionalized organic ammonium halide monomer, a quaternary phosphonium salt monomer, and a hydroxyl functionalized imidazole salt monomer in a solvent, and polymerizing the mixture under the action of an initiator to obtain the non-metal catalyst for synthesizing the polycarbonate by using CO2. The non-metal catalyst prepared by the present invention is used as a heterogeneous catalytic material, is applied to a system for preparing polycarbonate by a one-step copolymerization reaction of CO2 and an epoxy compound, has high catalytic activity, does not need an additional cocatalyst or a solvent, efficiently converts CO2 into the polycarbonate, has no impurities such as metal in the product, and has the advantages of easy separation, recycling, and the like.