2949results about "Ion-exchange process apparatus" patented technology

The invention relates to catalytically coated anion exchange membranes and their production. The catalytically active coated anion exchange membranes are used in electrochemical cells, in particular for water electrolysis. The object of the invention was to provide a process for producing an electrocatalytically active coated anion exchange membrane whose coating is porous and thus the electrocatalytically active centers located in the coating are easily accessible to the reactants. A basic idea of the process according to the invention is to incorporate particulate inorganic material into the catalyst coating as a placeholder, to solidify the coating, and then to leach the inorganic material out of the coating. The leaching converts the inorganic material into a water-soluble product that can be easily washed out of the coating.What remains are voids (pores) where the particulate inorganic material was previously located within the coating. The inorganic material therefore assumes the function of a structure-imparting agent within the coating composition, which is lost during the catalytically active coating process.

The invention provides a process for preparing various nutritional ingredients from oats, and relates to the technical field of deep processing of oats. The process comprises the following steps: crushing and sieving oats to obtain oat bran; the method comprises the following steps: extracting oat bran through a supercritical extraction technology to obtain pretreated oat bran and an extract, and carrying out gradient membrane treatment and membrane ultrafiltration on the extract to obtain oat oil; extracting the pretreated oat bran through continuous sectional extraction equipment; after first-stage protein extraction, second-stage dextran extraction, third-stage immobilized enzymolysis and fourth-stage filler decoloration, the materials enter a system balance tank, and membrane separation and concentration are performed to obtain the oat beta-dextran. According to the invention, various nutrient substances such as oat beta-glucan, oat protein, oat oil and the like can be extracted at the same time, the defects in the prior art are overcome, the automation degree is high, and energy conservation and emission reduction are realized.

The invention relates to the technical field of cationic polymers, in particular to a high-alkali-resistance polyarylene alkylene piperidine cationic polymer as well as a preparation method and application thereof. The preparation method of the high alkali resistance poly (arylene alkylene piperidine) cationic polymer comprises the following steps: carrying out catalytic polycondensation on 1-R6-3-piperidine formaldehyde or salt or hydrate thereof and an aromatic compound to obtain a polymer with a piperidine structure; and further performing ionization reaction to obtain the polyarylene alkylene piperidine cationic polymer. The anion exchange membrane prepared based on the piperidine cationic polymer has ultrahigh alkali resistance and excellent mechanical properties and ionic conductivity, and can be used in the electrochemical energy conversion fields of fuel cells, water electrolysis hydrogen production, carbon dioxide electroreduction, flow batteries and the like, and the separation fields of electrodialysis, water treatment and the like.

The invention discloses a dialysate regeneration system and dialysis equipment, and the dialysate regeneration system comprises a waste liquid channel, an input end of which receives dialysis waste liquid; the reactor is arranged in the waste liquid passage and is used for decomposing toxins in the dialysis waste liquid; the reactor comprises a cavity, which is provided with an inlet for the dialysis waste liquid to flow in and an outlet for the reaction liquid to flow out; a membrane having a first side and a second side disposed within the cavity, an enzyme being disposed on the first side or the second side of the membrane; wherein the side, provided with the enzyme, of the membrane is communicated with the inlet, the other side of the membrane is communicated with the outlet, dialysis waste liquid flowing in from the inlet is in full contact with the enzyme and then strides across the membrane to flow to the outlet, and the enzyme is intercepted by the membrane on the side where the enzyme is located; and the regenerated liquid pipeline is communicated with the outlet and is used for receiving the reaction liquid subjected to the reaction treatment of the reactor.

The invention discloses sodium alginate hydrogel for extracting pesticide and veterinary drug COFs and application of the sodium alginate hydrogel, and belongs to the field of detection. According to the invention, seven COFs are designed and synthesized, including grafting of different functional groups, different charged properties and different conjugated structures, and then corresponding seven COFs-sodium alginate hydrogel (CACPs) are prepared, and the COFs-sodium alginate hydrogel (CACPs) is used as an extraction material of dSPE to be applied to detection of common pesticide and veterinary drugs. The adsorption capacity of the CACPs on pesticide and veterinary drugs is coordinated and determined by the porous structure properties (specific surface area and pore size) of the CACPs and the inherent structure (conjugate structure size and grafting group) of the loaded COFs. The CACPs prepared from the COFs with large conjugated structures and grafted hydroxyl groups are most beneficial to adsorption of carbamate pesticides; for triazole and triazine pesticides and sulfonamide antibiotics, the CACPs with large specific surface area and medium pore diameter has the best extraction effect; for beta-receptor agonists, the CACPs with a large specific surface area have the best extraction effect.

The invention discloses a double-site doped titanium lithium ion sieve adsorbent as well as a preparation method and application thereof. The adsorbent is a lithium removal product of a double-site doped titanium lithium ion sieve adsorbent precursor, the chemical general formula of the double-site doped titanium lithium ion sieve adsorbent precursor is Li (2-x) MxTi (1-y) NyOz, M is at least one of Na < + >, K < + >, Zn < 2 + >, Co < 2 + >, Ni < 2 + >, Mg < 2 + > and Al < 3 + > and occupies Li site, N is at least one of Cr < 3 + >, Fe < 3 + >, Zr < 4 + >, Nb < 5 + >, Ta < 5 + >, V < 5 + >, Mo < 6 + > and W < 6 + > and occupies Ti site, x is larger than or equal to 0.001 and smaller than or equal to 0.5, and y is larger than or equal to 0.001 and smaller than or equal to 0.5. Metal cations are introduced to replace Li sites and Ti sites at the same time, Li site substitution enlarges interlayer spacing and improves Li < + > diffusion rate, Ti site substitution regulates local chemical bond and electron distribution, stabilizes lattice structure and enhances electron conduction, and through double-site doping, 'ion-electron 'double channels are constructed, so that a collaborative optimization effect is achieved. The double-site doped titanium lithium ion sieve adsorbent disclosed by the invention is applied to adsorption and extraction of lithium in a Bayer process sodium aluminate solution, and the adsorbent shows excellent adsorption performance.

The invention relates to the field of sludge treatment, and particularly discloses a method for recycling phosphorus in sludge pyrolysis residues, a flocculant synthesis method and application. The invention discloses a method for recovering phosphorus in sludge pyrolysis residues. The method comprises the following steps: drying the sludge pyrolysis residues, grinding and sieving; the sludge pyrolysis residues are put into a hydrochloric acid solution to react, and solid-liquid separation is carried out after the reaction; treating the phosphorus-containing extracting solution through adsorption resin to obtain a phosphorus purification solution; adjusting the pH value of the phosphorus purification liquid to 9-11, and carrying out a crystallization reaction under the condition that the molar ratio of magnesium to nitrogen to phosphorus is (0.8-1.2): (1-1.6): 1 to obtain struvite; a synthetic method of the flocculating agent is as follows: the flocculating agent is prepared from residual sludge residues. The method for recycling phosphorus in the sludge pyrolysis residues has the advantages that phosphorus resources are recycled from the sludge pyrolysis residues, and the residues are secondarily utilized. The flocculating agent is applied to municipal sewage treatment.

The invention relates to the technical field of chemical separation, in particular to a cyclohexanone rectification and purification method based on high-tower segmented packing, which comprises the following steps: step 1, filtering a cyclohexanone raw material containing impurities to remove solid particles, and dynamically adjusting the filtering precision according to the viscosity of the raw material; 2, arranging a bottom section, a middle section and a top section in the vertical high tower; the temperature gradient of each section is regulated and controlled through an independent temperature control unit, so that the temperature gradient of the middle section is matched with the relative volatility of the cyclohexanone-light component; 3, dynamically adjusting the reflux ratio based on the real-time detection result of the purity of the tower top distillate, and controlling an intermittent discharge valve according to the density change of the tower bottom heavy component enrichment liquid so as to continuously remove the heavy components; and 4, recycling the waste heat of the steam at the top of the tower for preheating the raw materials, and inhibiting the tower pressure fluctuation through a buffer tank. Through the innovative design of sectional packing of the high tower, the separation efficiency is improved, the energy consumption is reduced, and meanwhile, the equipment reliability is improved.

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

The invention provides a nitrogen-containing branched polymer, anion exchange resin, an anion exchange membrane and an electrochemical device. The molecular structure of the nitrogen-containing branched polymer comprises a nitrogen-containing heterocyclic ring, branched structures and biphenyl, the number of branching points of each branched structure is not less than 3, and the biphenyl is connected with the branching points of the branched structures through the nitrogen-containing heterocyclic ring; a represents the molar ratio of biphenyl in the nitrogen-containing branched polymer, B represents the molar ratio of a branched structure in the nitrogen-containing branched polymer, and A: B = (80-99): (1-20); the polydispersity index PDI of the nitrogen-containing branched polymer is less than or equal to 2.6, and the weight-average molecular weight of the nitrogen-containing branched polymer is 40000 g / mol to 50000 g / mol. The nitrogen-containing branched polymer provided by the invention can have excellent ionic conductivity and mechanical properties on the premise of reaching a low-level water absorption swelling rate.

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

The invention relates to a glabridin purification process for low-glabridin, which comprises the following steps: removing glabridin in a glabridin product by using a metal organic framework material (MOFs); the purification process comprises the following steps: extracting glycyrrhiza glabra roots with ethanol or methanol, and filtering to remove medicine residues to obtain an extracting solution; concentrating the extracting solution under reduced pressure to a certain volume, and then adsorbing and removing the glabriol through a filler column filled with an MOFs material; or enabling the extract liquor in the purification process of the glabridin to flow through a filler column filled with the MOFs material to adsorb and remove the glabriol; or adding the MOFs material into other fillers in a glabridin column chromatography purification process to adsorb and remove the glabridin, so as to obtain a glabridin product with low glabridin content. According to the method disclosed by the invention, the glabriol in the glabridin is simply and effectively removed, the content of the glabriol in the prepared glabridin product is lower than 0.1%, the safety of the product is improved, and the method has a strong market competitive advantage. The adsorption material can be recycled after being heated and desorbed, and has potential application prospect and wide application value.

The invention discloses a method for extracting and purifying flavone in litsea coreana through an ultrasonic-assisted eutectic solvent, and belongs to the technical field of green processing of natural products. The invention provides a method for efficiently preparing litsea coreana flavone by integrating computer prediction, green solvent extraction and resin purification technologies. The method comprises the following steps: firstly, calculating and screening a deep eutectic solvent system with the highest affinity with the litsea coreana flavone on the basis of a COSMO-RS theoretical model, then coupling the optimized DES with an ultrasonic-assisted extraction (UAE) technology, and through the synergistic effect of the DES and the UAE technology, remarkably improving the extraction rate of the litsea coreana flavone and furthest keeping the biological activity of a target component; then, a macroporous resin dynamic adsorption-desorption purification process is linked, so that high-selectivity enrichment and impurity removal of the flavonoid compounds in the crude extract are realized, a high-purity product is obtained, and a complete process route from intelligent screening, efficient extraction to precise purification is finally formed.

The invention provides an adsorbent capable of simultaneously adsorbing bilirubin and cytokines and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out suspension polymerization reaction on a styrene monomer and a polyvinyl cross-linking agent in a dispersion medium under the action of a continuous multi-component pore-foaming agent and an initiator to prepare polystyrene-based macroporous resin; carrying out chloromethylation reaction on the polystyrene-based macroporous resin to prepare chlorine balls; carrying out post-crosslinking reaction on the chloromethylated beads to prepare the adsorbent capable of adsorbing bilirubin and cytokines at the same time; the continuous multi-component pore-foaming agent comprises a first pore-foaming agent, a second pore-foaming agent and a third pore-foaming agent of which the solubility parameters are gradually increased in sequence; the temperature of the suspension polymerization reaction is adjusted according to the mass fraction of the polyvinyl cross-linking agent in the monomer mixture and the solubility parameter of the continuous multi-component pore-foaming agent, and the monomer mixture is composed of styrene monomers and the polyvinyl cross-linking agent. The bilirubin and cell factors can be adsorbed at the same time, and the safety of blood purification is improved.

The invention provides a high-molecular adsorption material with high selectivity on platinum group metals as well as a preparation method and application of the high-molecular adsorption material, and belongs to the technical field of material science. Comprising the following steps: (1) preparing a methanol solution containing platinum group metal ions, and adding a functional monomer mixture and modified graphene oxide to form a pre-assembled compound; (2) adding a cross-linking agent and an initiator, removing oxygen, and polymerizing to obtain a polymer; and (3) grinding the polymer, eluting metal ions, washing to be neutral, and drying. The high-molecular adsorption material provided by the invention takes modified graphene oxide as a support body, template molecules and specific functional monomers (4-vinylpyridine and 2-mercaptobenzimidazole) are combined to form a pre-assembled compound, then a cross-linking agent and an initiator are added, recognition sites are fixed through cross-linking polymerization, and finally, the high-molecular adsorption material is obtained after the template molecules are eluted. The adsorbent is high in adsorption rate, capable of specifically adsorbing platinum group metal, good in stability and reproducibility and capable of being repeatedly used.

The present invention relates to a method for preparing a attapulgite / molecular sieve composite adsorbent, comprising the following steps: (1) using NaX molecular sieve powder as a raw material, adding purified attapulgite, grinding, adding an aluminum source for crystallization, filtering, washing to a pH of 7 to 8, and drying to obtain a attapulgite / molecular sieve composite adsorbent precursor; (2) exchanging the composite adsorbent precursor obtained in step (1) with metal cations, and then filtering, washing, drying, molding, and activating to obtain the composite adsorbent. The composite adsorbent has a simple preparation method, a large adsorption capacity, and good selectivity. It can effectively adsorb and separate liquid mixtures, and has broad application prospects in selectively adsorbing and separating p-xylene from C8 aromatic isomers. The present invention also relates to a attapulgite / molecular sieve composite adsorbent and its application in adsorbing and separating p-xylene in mixed xylene.

The invention relates to an aromatic hydrocarbon isomer adsorbent containing a modified X-type molecular sieve. The outer surface area of the modified X-type molecular sieve is 9.5-19m < 2 > / g, and the sum of the pore volume of mesopores and the pore volume of macropores is 6%-18% of the total pore volume. The p-xylene adsorbent comprises 88-95% by mass of a modified X-type molecular sieve, 4-11% by mass of a crystal transformation X-type molecular sieve and 1-3% by mass of a matrix. The invention also relates to a preparation method of the adsorbent and application of the adsorbent in adsorption separation of p-xylene from mixed C8 aromatic hydrocarbons.

The utility model discloses a high-purity methyl 3-methoxypropionate filtering device which is provided with a product tank for conveying materials, and a conveying pipe is mounted on the right side of the outer surface of the product tank; comprising a molecular sieve device installed on the upper side of the outer surface of the conveying pipe, a first feeding pipe is installed on the upper side of the molecular sieve device, and an ion exchange device is installed at the other end of the first feeding pipe. According to the high-purity methyl 3-methoxypropionate filtering device, the conveying pipe with the conveying pump is arranged, materials in the product tank are stably pumped into the filtering device, and the molecular sieve device is matched, so that methyl alcohol, methyl acrylate, acrylic acid, sodium methoxide and other impurities in industrial methyl 3-methoxypropionate can be effectively adsorbed and removed; and ion-state metal, anions, organic pigment free alkali and the like are removed by gradually matching with an ion exchange device, and finally, the material is filtered by matching with a filter element filter, and the purity of the product is kept.

The invention discloses a phosphate functionalized silicon-based solid adsorbent and application thereof, and belongs to the technical field of yttrium separation and purification, a preparation method comprises the following steps: step 1, synthesizing silicon-based resin particles SiO2-P by using spherical porous silicon dioxide as a solid-phase carrier and styrene as a raw material through an in-situ polymerization technology, and 2, synthesizing the phosphate-functionalized silicon-based solid adsorbent HDEHP / SiO2-P by using di (2-ethylhexyl) phosphate HDEHP as a raw material and utilizing a vacuum impregnation technology. Therefore, the phosphate functionalized silicon-based solid adsorbent and the application thereof are adopted in the invention. The phosphate can specifically and selectively extract trivalent yttrium ions, so that efficient separation of yttrium and strontium is realized, high-purity yttrium can be obtained through separation and purification after elution, and a solid adsorbent can be recycled.

The invention discloses phenolic resin-based spherical activated carbon and a preparation method and application thereof.The preparation method comprises the steps that raw materials containing linear phenolic resin, a curing agent and an organic solvent are mixed to obtain a mixed solution, the mixed solution is dropped into a hot oil column, and thermosetting phenolic resin balls are obtained through crosslinking, curing, balling and drying; and further performing high-temperature carbonization to obtain the phenolic resin-based spherical activated carbon. The preparation method disclosed by the invention is simple and can be continuously operated. The obtained spherical activated carbon is uniform in size, and the size can be controlled and adjusted within the range of 0.5-2.5 mm.

The invention provides application of a phenolic compound and / or pharmaceutically acceptable salt thereof in preparation of a medicine for treating breast cancer and a pharmaceutical composition, and relates to the technical field of biological medicines. The invention discloses application of phenolic compounds and / or pharmaceutically acceptable salts thereof in preparation of medicines for treating breast cancer. The phenolic compounds comprise a compound 1 and / or a compound 2. The compound 1 (arnebidin) and the compound 2 ((+)-(R)-de-O-metalasiodiplodin) adopted in the invention have good inhibition effects on human triple-negative breast cancer MDA-MB-231 cell strains, the IC50 value of the compound 1 is 1.16 [mu] M, and the IC50 value of the compound 2 is 0.68 [mu] M, so that a new choice is provided for developing drugs for treating triple-negative breast cancer, and the compound 1 and the compound 2 have good application prospects. The compound has a good application prospect in preparation of medicines for treating breast cancer, especially medicines for treating triple-negative breast cancer.

The present invention belongs to the technical field of resource recovery, and specifically relates to a method for removing impurities from a lithium-ion battery leachate. The method for removing impurities from a lithium-ion battery leachate provided by the present invention produces polyferric sulfate for phosphorus removal while removing iron, thereby achieving iron and phosphorus removal without increasing reagent consumption and steps. The present invention can use an excess of fluorine-containing reagents to ensure that calcium and magnesium are completely removed while removing calcium and magnesium, and then use a defluorination material to remove excess fluorine; the defluorination materials used in the present invention can be reused in subsequent processes, reducing the consumption of defluorination materials. The method for removing impurities provided by the present invention realizes material recycling while improving the purity of the lithium-ion battery leachate, and does not generate excessive waste liquid, thereby improving environmental protection.

The invention discloses a modified mesoporous silica adsorbent as well as a preparation method and application thereof, and relates to the technical field of porous material preparation. The preparation method of the modified mesoporous silica adsorbent provided by the invention comprises the following steps: hydrolyzing a silicon source in a solution containing a template agent to form a preliminary framework of silica, then adding a silane coupling agent containing at least one of sulfydryl, sulfonyl and amino, carrying out a hydrothermal reaction at 60-120 DEG C, and removing the template agent to obtain the modified mesoporous silica adsorbent. The modified mesoporous silica adsorbent capable of selectively adsorbing zirconium and hafnium can be obtained. The modified mesoporous silica adsorbent prepared by the method is used for adsorbing and enriching zirconium and hafnium ions, the adsorption capacities of 6.23 mg / g and 5.95 mg / g or above can be obtained respectively, the adsorption capacity is excellent, and the adsorbent can reach adsorption equilibrium within 10 min and is excellent in adsorption rate.

The invention relates to the technical field of preparation of solid-phase microextraction devices, and particularly discloses a pretreatment method and analysis application of a quinolone antibiotic sample, a conjugated microporous polymer (CMP) is successfully prepared by adopting a SonogashiraHagihara cross-coupling reaction, and a cationic conjugated microporous polymer CMP-I is obtained by further carrying out methylation treatment on the CMP by using CH3I. According to the present invention, the cationic CMP-I is adopted as the solid phase extraction adsorption material to construct the solid phase microextraction-liquid chromatography-tandem mass spectrometry (SPE-LC-MS / MS) analysis method, and the method has characteristics of high sensitivity and low detection limit in the QA detection aspect, and can meet the accurate determination requirement of the trace QA in meat and water.

The present application relates to the technical field of water treatment devices, and provides a water softener. The water softener comprises a water softening valve, a connection assembly, a water path assembly, and resin tanks. The water softening valve comprises a valve body, a valve element assembly, a driving part, and a transmission mechanism. Both the valve element assembly and the driving part are disposed within the valve body, and the driving part is in transmission connection with the valve element via the transmission mechanism. The connection assembly is in communication with the water softening valve and is located at one side of the water softening valve. The connection assembly is provided with a drain passage. The driving part is configured to drive the transmission mechanism to act, so as to control opening of the drain passage. The water path assembly is in communication with the connection assembly, and is used to guide the flow of water. The resin tanks are used to soften water flowing therethrough. In the present application, a driving apparatus is employed to drive the transmission mechanism to act, so that the transmission mechanism can control the valve element to control water-path switching, and can control the opening of passages within the connection assembly, thereby enabling full control of the entire water path, simplifying control logic, improving control efficiency, reducing the number of control devices, and lowering the failure rate of the water path control assembly.

The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used for cleaning a semiconductor substrate in a multistep semiconductor manufacturing process.

The invention provides a purification technology for regenerated DMT in a chemical recovery process of waste polyester, which comprises the following steps: S1) mixing divalent metal salt, trivalent metal salt, an alkaline reagent and water, and carrying out vacuum drying on the reaction product to obtain a layered double-metal hydroxide precursor; s2) mixing the precursor with a solution containing functional anions, and carrying out vacuum drying on a product obtained after intercalation modification to obtain functional anion modified layered double hydroxide; s3) carrying out electrostatic self-assembly on the hydroxylated hexagonal boron nitride and the layered double-metal hydroxide, carrying out suction filtration on the obtained mixed solution on a carrier, and drying to obtain an adsorption film; s4, the waste polyester alcoholysis solution is adsorbed through the adsorption film.According to the pretreatment technology for purification of the waste polyester alcoholysis solution, the purified alcoholysis solution has higher purity, and meanwhile the difficulty of follow-up reduced pressure distillation purification of regenerated DMT is effectively reduced.

The utility model relates to the technical field of polycrystalline silicon production equipment, in particular to a trichlorosilane purification system in a polycrystalline silicon production process, which is characterized in that a coarse distillation primary tower is communicated with a cold hydrogenation primary separation tower; the low-boiling-point recovery tower is communicated with the primary crude distillation tower; the crude distillation secondary tower is communicated with the crude distillation primary tower; the rectification primary tower is communicated with the crude distillation secondary tower; the high-boiling recovery tower is communicated with the rectification primary tower; the rectifying secondary tower is communicated with the rectifying primary tower; the rectification secondary tower is communicated with the crude distillation primary tower; the third-stage rectification tower is communicated with the second-stage rectification tower; a tower kettle of the third-stage rectification tower is communicated with the first-stage rectification tower; the light component removal tower is communicated with the low-boiling-point recovery tower and the high-boiling-point recovery tower; the heavy component removal tower is communicated with the light component removal tower; the high-boiling recovery tower is communicated with the tower kettle of the de-heavy tower; a gas phase outlet of the heavy component removal tower is sequentially connected with a gas phase adsorption device and a light component tower; a reflux inlet of the light component tower is communicated with the light component removal tower; and the heavy separation tower is communicated with the light separation tower. According to the utility model, the stability and reliability of large-load operation of the rectification system can be improved.

The invention discloses a polymer microextraction column for in-situ growth of a metal organic framework material (MOF), which is prepared by the following steps: firstly preparing a polymer monolithic column matrix with rich metal oxide nanoparticles on the surface, and then introducing an organic linking agent solution into the monolithic column to realize self-assembly of the metal oxide and the organic linking agent on the surface of the polymer. And thus, the hybrid polymer micro-extraction column for MOF in-situ growth is obtained. The polymer micro-extraction column prepared by the invention combines the advantages of the flexible porous polymer and the rigid MOF, and has continuous large through holes and micro-mesopores with abundant acting sites; meanwhile, the microextraction column material is rich in fluorine atoms and open metal sites, can provide hydrogen bonds, F-F affinity, Lewis acid / alkali complexation and the like, has a specific enrichment effect on persistent organic fluorine pollutants such as perfluorinated compounds and fluorine aromatic hydrocarbon compounds, and has a very good application prospect in the aspect of pretreatment of environment and biological samples.

The invention discloses a strong-hydrophobicity chromatographic stationary phase modified by a covalent triazine skeleton containing an octyl chain as well as a preparation method and application of the strong-hydrophobicity chromatographic stationary phase. Activated silica gel is modified by utilizing a silane coupling agent, so that gamma-glycidyl ether oxypropyl trimethoxy is introduced into the surface of the silica gel; and performing in-situ growth of a covalent triazine skeleton layer containing an octyl chain through a Schiff base condensation reaction to prepare the strong-hydrophobicity chromatographic stationary phase. A covalent triazine skeleton containing a hydrophobic octyl chain in the structure is used for modifying the surface of silica gel, and a bonding phase contains a triazine ring, a benzene ring, an octyl chain and an amino group. According to the stationary phase, a hydrophobic long octyl chain is introduced into a bonding unit of CTF, so that the structure, morphology and performance of the CTF are changed, a'flower-on-sphere 'morphology is formed, and the stationary phase has a rigid porous structure, adjustable hydrophilicity / hydrophobicity, a rich pi electron system, strong hydrophobicity and good separation selectivity for non-polar compounds, and can be widely applied to separation of various samples.