48 results about "M-Xylene" patented technology

The invention belongs to the technical field of chromatographic separation materials, and discloses a preparation method and application of a GM-8 nanosheet material. The preparation method of the material comprises the following steps: respectively dissolving Cu (NO3) 2.3 H2O and 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene in an organic solvent, mixing, transferring into a reaction bottle, adding trifluoroacetic acid and pyridine, and uniformly mixing and stirring to obtain a reaction mixture; and heating the reaction mixture to react for 7-9 hours to obtain a blue precipitate, cooling the blue precipitate to room temperature, and washing and drying the blue precipitate to obtain the ultra-stable microporous GM-8 nanosheet material. The nanosheet GM-8 is used as a gas chromatography stationary phase, high-efficiency separation and trace detection of xylene isomers can be realized, and the chromatographic column still keeps excellent separation capacity after being stored in an environment with air humidity of 65-90% for 31 months. The capillary gas chromatographic column can realize high-efficiency separation of disubstituted benzene isomers such as xylene, the separation degree of m-xylene / p-xylene is up to 18.2, and a new solution is provided for high-efficiency separation of isomers with similar properties.

The invention discloses a covalent organic framework material for directly capturing carbon dioxide in air and coupling solar photo-thermal rapid desorption and a preparation method of the covalent organic framework material, and belongs to the field of materials. According to the material, piperazine with secondary amine sites and dialdehyde derivatives are used as raw materials, dioxane and mesitylene, m-xylene and mesitylene or o-xylene and mesitylene are used as solvents, and solvothermal reaction is performed; and after the reaction is finished, sequentially carrying out suction filtration and washing by using DMF and THF, carrying out Soxhlet extraction for 24 hours, and then carrying out vacuum drying to obtain the covalent organic framework. The aldehyde and the secondary amine are condensed according to the proportion of 1: 2, and the secondary amine site of the raw material piperazine is converted into the tertiary amine site in the covalent organic framework through aminal reaction. Tertiary amine nitrogen atoms can specifically recognize carbon dioxide in air and perform chemical adsorption, and firm covalent bonds can ensure the stability of a covalent organic framework, so that efficient air carbon dioxide capture is realized. In addition, ionic bonds formed by the covalent organic framework and carbon dioxide are also beneficial to coupling solar photo-thermal low-energy-consumption desorption.

The invention provides a synthesis method of 1, 5-dibromo-3-fluoro-2, 4-xylene, and belongs to the field of synthesis of fine chemical intermediates. According to the method, 2-fluorine-m-xylene is taken as a starting raw material, and 1, 5-dibromo-3-fluoro-2, 4-xylene is obtained through two steps of bromination and reduction. According to the synthesis method, the problem that accurate bromination positioning cannot be realized is solved by optimizing reaction raw materials and operation steps, so that the purity and yield of the product are greatly improved. The synthesis method is simple and stable, and has great industrial production value.

A polyamide molding composition (C) is provided and comprises at least one polyamide (P1) comprising recurring units (RPA) according to formula (I):Wherein n varies between 4 and 18, inclusive, and R1 is a mixture of m-xylylene (MX) and p-xylylene (PX) in a mol.% ratio varying between 1:99 and 99:1. The polyamide molding composition (C) further comprises at least one polymer (P2). The weight ratio of P1 / P2 varies between 15 / 1 and 1 / 1 and polymer (P2) comprises recurring units (RPA2) according to formula (V):Wherein m varies between 6 and 18 and R1 is p-xylylene (PX). The polyamide molding compositing (C) optionally comprises at least one reinforcing agent, and / or at least one component selected from the group consisting of tougheners, plasticizers, colorants, pigments, antistatic agents, dyes, lubricants, thermal stabilizers, light stabilizers, flame retardants, nucleating agents and antioxidants.

The present invention aims to provide a carbon dioxide absorbent that can efficiently absorb, fix, and simply separate and recover carbon dioxide in the air. The present invention relates to an atmospheric carbon dioxide absorbent consisting of an amine selected from the group consisting of m-xylylene diamine, benzylamine, phenethylamine, p-methoxybenzylamine, and p-trifluoromethylbenzylamine, and water, and having the amine content of 1 to 50 wt % with respect to the total amount. The present invention also relates to a method for generating carbon dioxide which uses the aforementioned carbon dioxide absorbent and is simple and superior in energy efficiency.

The invention discloses skin mucosa maintenance liquid capable of killing fungi and HPV (human papillomavirus) as well as a preparation method and application of the skin mucosa maintenance liquid, and belongs to the technical field of sterilization and virus removal. The skin mucosa maintenance liquid is prepared from octanol ether, benzalkonium bromide, phenoxyethanol, yermate, parachlorometaxylenol, taetinic acid, chitosan, keratinase, fluconazole, glycerol, borneol, menthol, absolute ethyl alcohol and tween-40. Wherein the skin mucosa maintenance liquid has an effect of regulating apoptosis induction on abnormal cells and an effect on vaginal flora, and has an obvious inhibition effect on cervicitis and colpitis mycotica, namely an anti-inflammatory effect; meanwhile, apoptosis of cells containing HPV16 and HPV18 genes can be induced, shedding of abnormal cells is promoted, diseased cells are killed, and vaginal tissues with pathological changes are removed.

The application discloses a kind of fast screening method of solvent residual quantity in food contact packaging material, sample is sent into gas chromatograph by headspace sampler and separates out the gas to be measured, and the gas to be measured is detected using hydrogen flame ion detector, and the chromatogram of sample is obtained;Add mixed standard intermediate liquid of known content in blank matrix to obtain the standard reference sample of the limited concentration to be measured, and the peak area of methyl acetate, benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene is measured respectively;By comparing the sum of the peak area of all detected substances in sample chromatogram with the chromatographic peak area of methyl acetate in standard reference sample, judge whether the total amount of residual solvent meets the limit requirement, and by comparing the peak area of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene in sample with the peak area of corresponding substance in standard reference sample, judge whether each benzene solvent meets the limit requirement.

The invention belongs to the technical field of water treatment, and particularly relates to a water treatment composite flocculant and a preparation method thereof.The preparation method comprises the steps that in the argon atmosphere, tetrazoleacetic acid, amphoteric polyacrylamide, a pyridine borane complex and m-xylene are mixed and react for 12-48 h at the temperature of 140 DEG C, and tetrazoleacetic acid modified amphoteric polyacrylamide is obtained; adding tetrazoleacetic acid modified amphoteric polyacrylamide into a 2-morpholinoethanesulfonic acid buffer solution, cooling to 4 DEG C in an ice bath, sequentially adding 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide into the solution, stirring and activating for 30 minutes in a nitrogen atmosphere, adding the chelate solution into the solution, and reacting to obtain the composite flocculant. The floc formed in the flocculation process of the flocculant shows higher stability under the shearing action of water, the floc is not easy to break, the flocculation effect is better, and the flocculant is convenient to use.

This invention relates to the field of catalyst technology, specifically to a catalyst for the ammoxidation of m-xylene to isophthalonitrile and its preparation method. It includes a support and an active ingredient, wherein the active ingredient has the general structural formula: V 1.0 Cr a X b Y c Z d O e Wherein: X is selected from at least one of B, P, As and Se; Y is selected from at least one of Group VIII transition metals; Z is selected from at least one alkaline earth metal. The catalyst prepared by the present invention is used for the ammoxidation of m-xylene to prepare isophthalonitrile, thereby improving the selectivity and yield of isophthalonitrile.

The invention relates to the field of viscosity-reducing adhesives, and discloses an anti-aging viscosity-reducing adhesive composition and application thereof in an electrified viscosity-reducing adhesive tape, the anti-aging viscosity-reducing adhesive composition comprises modified acrylic resin, tackifying resin, ionic liquid, an ion channel auxiliary agent, an HDI tripolymer, hydroxyl-terminated polybutadiene and ethyl acetate; modified hydroxyethyl acrylate in the modified acrylic resin is prepared by respectively reacting isophorone diisocyanate with a monohydroxy s-triazine derivative and hydroxyethyl acrylate; according to the monohydroxy s-triazine derivative, cyanuric chloride reacts with m-xylene and resorcinol to synthesize a dihydroxy chlorine-containing s-triazine intermediate, then the dihydroxy chlorine-containing s-triazine intermediate and 1, 4-p-xylylene dichloride are subjected to substitution to prepare a reaction product, and the reaction product reacts with p-aminodiphenylamine and 3, 5-di-tert-butyl-4-hydroxybenzylamine at the same time to prepare the monohydroxy s-triazine derivative. The viscosity-reducing glue composition prepared by the invention has good thermal stability, water resistance, high-temperature aging resistance and flame-retardant effect, and can still maintain viscosity reduction after high-temperature, high-humidity and cold and hot impact aging.

The invention relates to a C8 aromatic hydrocarbon complexing extraction-crystallization integrated efficient separation method, which comprises the following steps: carrying out complexing extraction reaction on a C8 aromatic hydrocarbon raw material and an extraction agent to obtain an extraction phase and a raffinate phase; heating and decomposing the extraction phase to obtain a high-purity MX product and an extraction agent; and taking the raffinate phase, stirring and cooling to 2.3 DEG C to obtain a solid-liquid mixture of PX-rich crystals, OX and ethylbenzene, continuously cooling to-34.9 DEG C to obtain a solid-liquid mixture of PX-OX eutectic and ethylbenzene, and then carrying out centrifugal separation to obtain a PX-OX-rich eutectic product and a high-purity ethylbenzene product. A C8 aromatic hydrocarbon complex extraction-crystallization integrated efficient separation system comprises a reactor, a separator, a crystallizer and a centrifugal machine. According to the separation method, through integration of a complexing extraction method and a crystallization method, the purity and yield of products such as m-xylene and ethylbenzene are improved, the energy consumption of a traditional crystallizer is reduced, and the treatment capacity and efficiency of equipment are improved.

This invention belongs to the field of water treatment technology, specifically relating to a composite flocculant for water treatment and its preparation method. Under an argon atmosphere, tetrazolium acetic acid, amphoteric polyacrylamide, pyridine borane complex, and m-xylene are mixed and reacted at 140°C for 12-48 hours to obtain tetrazolium acetic acid-modified amphoteric polyacrylamide. The tetrazolium acetic acid-modified amphoteric polyacrylamide is added to a 2-morpholine ethanesulfonic acid buffer solution, cooled to 4°C in an ice bath, and then 1-ethyl-(3-dimethylaminopropyl)carbodiimide hydrochloride and N-hydroxysuccinimide are added sequentially. The mixture is stirred and activated under a nitrogen atmosphere for 30 minutes, and then a chelate solution is added to obtain the composite flocculant. The flocs formed during the flocculation process of this invention exhibit higher stability under the shearing action of water, are less prone to breakage, and provide better flocculation and ease of use.

The application discloses a kind of twin ZSM-5 molecular sieve and synthesis method thereof, belong to inorganic chemistry technical field.The twin ZSM-5 molecular sieve is covered by the (010) crystal surface of one coffin-shaped ZSM-5 to the (100) crystal surface of another coffin-shaped ZSM-5, so that the molecular sieve surface has higher straight channel exposure ratio.Preparation process includes: (i) water, sodium hydroxide, aluminum source, template agent, silicon source are mixed and stirred to obtain synthesis gel A;(ii) three kinds of molecular sieves MCM-35, MOR, MCM-22 are added to alkaline environment according to the ratio of 1:2:4, and alkaline heat treatment is carried out to obtain mixture B containing "mfi, mor, mel" three kinds of structural units;(iii) A, B are mixed according to the water content of 1:1, and ZSM-5 molecular sieve product is obtained by hydrothermal crystallization.For the "primary aromatic hydrocarbon mixture" obtained after benzene, toluene, p-xylene are separated from the aromatic hydrocarbon mixture obtained by petroleum and non-petroleum route, twin ZSM-5 molecular sieve shows enhanced selectivity to o-xylene and m-xylene due to higher "straight channel exposure ratio" on the surface.

The present application relates to a kind of preparation method of isophthalic acid, belong to organic synthesis and fine chemical technology field.The method uses m-xylene as raw material, air as oxidant, under the condition of no additional solvent, using the catalyst containing cobalt, manganese, chromium compound carries out catalytic oxidation reaction.After reaction, it is obtained isophthalic acid by cooling, filtering, washing and drying.The present application uses halogen-free cobalt-manganese-chromium catalyst system and cancels solvent, fundamentally solves the problem of serious corrosion of traditional process equipment, large pollution of acid-containing wastewater containing bromine, while having the advantages of mild condition, simple process, high atom economy and material closed loop can be realized, provides a cleaner, safer, more economical isophthalic acid production path.

Disclosed are methods and systems for quantitation of benzene, toluene, ethyl benzene, o-xylene, m-xylene, and p-xylene in aromatics recovery complexes. High-performance liquid chromatography using a carbon stationary phase and a gradient mobile phase is performed. The carbon stationary phase can be a porous graphitic carbon stationary phase. The mobile phase includes an organic acid in water and an alcohol. The organic acid can include formic acid, and the alcohol can include methanol. The methods and systems achieve a resolution between xylene isomer peaks of greater than 2.0 when sampling industrial process streams in aromatic recovery complexes.

A feed mixture comprising one or more xylene isomers and C9+ aromatic hydrocarbons may be separated in a first distillation column to obtain a first overhead stream comprising m-xylene and / or p-xylene and a first bottoms stream comprising o-xylene and C9+ aromatic hydrocarbons. The first bottoms stream may be optionally isomerized through liquid-phase isomerization and fed to a second distillation column to obtain a second overhead stream comprising at least o-xylene and a second bottoms stream comprising C9+ aromatic hydrocarbons. The second overhead stream may be optionally isomerized through liquid-phase isomerization. Liquid-phase isomerization may occur upon at least one of the first bottoms stream, the second overhead stream, an optional side stream obtained from the first or second distillation columns, or within the first or second distillation columns, such that the second overhead stream or an isomerized second overhead stream is rich in p-xylene.

The application discloses a kind of photocatalytic self-cleaning detergent and preparation method thereof, by weight parts, including the following components: TiO2-zeolite complex 5-10 parts;Para-chloro-m-xylene phenol 2-3 parts;Sodium citrate 5-8 parts;Sodium silicate 3-5 parts;Polyvinylpyrrolidone 1-2 parts;Surfactant 20-30 parts;Enzyme preparation 0.2-1 part;pH regulator 2-3 parts;Water 50-70 parts.The photocatalytic self-cleaning detergent of the application promotes the absorption of ultraviolet light by PCMX, thereby exciting TiO2-zeolite complex to generate strong oxidative active oxygen, improving the degradation efficiency of the detergent on stubborn organic stains, solving the problem of poor dispersibility of TiO2 in the detergent and limited photoactivation, realizing the stable release of photocatalytic materials in the washing process, ensuring sustained and efficient cleaning effect, and can be applied to hospitals or industrial and other scenes requiring a large amount of deep cleaning.

The application provides adamantane-modified fullerenes (C 60 ) pyrrolines with enhanced fluorescent properties. The application discloses adamantane-modified fullerenes pyrrolines with enhanced fluorescent properties, and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing and dispersing fullerenes, paraformaldehyde, 1-adamantane methylamine and o-dichlorobenzene, reacting, evaporating a solvent under reduced pressure, separating by column chromatography, and recrystallizing to obtain adamantane-modified fullerenes pyrrolines. The adamantane-modified fullerenes pyrrolines are dissolved in m-xylene, and a poor solvent, isopropanol, is slowly added dropwise to form a clear liquid-liquid interface. The reaction liquid is shaken until the liquid-liquid interface disappears, and then is subjected to ultrasonic treatment, standing, precipitation, washing, and drying to obtain microcrystals. The synthesis process is simple, and raw materials are cheap and easy to obtain. The crystallization method is simple and effective, and the crystallization is good, so that the crystal morphology and size can be controlled. The obtained adamantane-modified fullerenes pyrrolines and cubic crystals have good solubility in organic solvents, excellent fluorescent properties, and symmetrical structure, which is beneficial to subsequent application.

The invention discloses a power-enhancing, carbon-deposition-cleaning and noise-reducing curing agent mixed with gasoline for use. The curing agent is prepared from the following raw materials in percentage by mass: 10% of methanol, 3% of sec-butyl ether, 51% of methyl tert-butyl ether (MTBE), 35% of m-xylene and 1% of an antioxidant and anti-gelling agent. The invention relates to the technical field of fuel additives for internal combustion engines, in particular to a power-enhancing, carbon-deposition-cleaning and noise-reducing curing agent mixed with gasoline for use, which has the following advantages due to the adoption of the technical scheme: the power of an engine is increased by 5-12% by increasing the octane number; m-xylene and methanol are dissolved to remove deposited carbon, and an antioxidant and anti-gum agent inhibits new deposited carbon; sufficient combustion is achieved, and friction and noise are reduced by 3-5 decibels; no metal component is contained, so that part abrasion is avoided, and the antioxidant protects the machine and prolongs the service life by more than 30%; 8%-15% of fuel oil is fully combusted, 20%-30% of CO and HC are reduced, and the components are safe and reliable.

The invention provides a method for determining the content of a target component in coking crude benzene. The method for determining the content of the target component in the coking crude benzene comprises the following steps: mixing a coking crude benzene sample with internal standard substances 1, 4-dioxane and n-nonane, and injecting the mixture into a chromatographic instrument by adopting a capillary chromatographic column and taking methanol as a mobile phase to obtain a chromatogram and peak areas of all substances; calculating to obtain the content of the target component; the target components comprise benzene, toluene, ethylbenzene and xylene; wherein the xylene comprises p-xylene, m-xylene and o-xylene; the capillary chromatographic column comprises any one of a cross-linked and bonded polyethylene glycol quartz elastic capillary chromatographic column, a DB-1 chromatographic column and an HP-5 chromatographic column. According to the method disclosed by the invention, the component detection in the coking crude benzol is more accurate, the refining processing technology develops towards a more large-scale and multi-product deep processing direction, a higher additional value is generated, and the high-quality development of the industry is promoted.

A blow-molded bottle for a carbonated beverage includes a threaded mouth, a cylindrical side wall, a bottom, and a standard fill capacity of 37.5 mL to 105 mL. The bottle is blow-molded from a laminated preform including an outer layer formed from polyethylene terephthalate, an intermediate gas barrier layer formed from a polyamide comprising a dicarboxylic acid component and a diamine component comprising m-xylylenediamine, and an inner layer comprising polyethylene terephthalate. The laminated preform may weigh from about 4 to 16 grams. The polyamide layer provides the bottle with excellent resistance to carbon dioxide, hydrogen, and nitrogen transmission and prevents the degradation of nutrients and flavors.

The invention discloses a method for high-selectivity synthesis of a triazine ultraviolet light absorber, which comprises the following steps: step 1, primary Friedel-Crafts reaction: carrying out primary Friedel-Crafts reaction on cyanuric chloride and resorcinol under the action of a catalyst in a carbon dioxide gas atmosphere; step 2, secondary Friedel-Crafts reaction: supplementing the catalyst into a reaction product, and directly carrying out secondary Friedel-Crafts reaction on the reaction product and biphenyl or m-xylene to obtain a disubstituted triazine intermediate; step 3, etherification reaction: in a carbon dioxide atmosphere, carrying out etherification reaction on the disubstituted triazine intermediate and halogenated alkane under an alkaline condition; step 4, purification and separation: purifying and separating a product by adopting a combined type immobilized catalyst; and 5, recrystallization: recrystallizing the mixed solvent separated in the step 4 to obtain the high-purity triazine ultraviolet light absorber. Through the synergistic effect of technologies such as step-by-step substitution, one-pot continuous reaction, carbon dioxide atmosphere regulation and control and combined type immobilized catalyst purification, the product is purified by adopting a combined type immobilized catalyst in a filtering manner.

The invention belongs to the field of catalysts, and particularly relates to a method for recovering fullerene from a fullerene-containing supported catalyst, which comprises the following steps: carrying out reflux extraction or Soxhlet extraction on the fullerene-containing supported catalyst by using an organic solvent, carrying out solid-liquid separation on the obtained extract, and collecting a liquid-phase substance; wherein the organic solvent comprises one or more of toluene, carbon disulfide, p-xylene, m-xylene and o-xylene, the active component of the supported catalyst comprises one or more of IB group metal and VIII group metal, and the carrier of the supported catalyst comprises at least one oxide; and concentrating and drying the liquid phase substance to obtain the recovered fullerene. The invention also relates to the recovered fullerene. According to the method, the recovery rate of the fullerene is high, and the purity of the recovered fullerene is high.

An electrolyte includes a metal cation selected from Li+, Na+, Mg2+, Ca2+, and / or Zn2+, a boron cluster anion, and a solvent mixture that includes an aromatic compound and at least one solvent. The aromatic compound can include benzene, toluene, o-xylene, m-xylene, p-xylene, mesitylene, hexamethylbenzene, biphenyl, naphthalene, and a compounds with partial or full substitutions of hydrogen with fluorine for these aromatic compounds. And the at least one solvent can include an ether solvent, an ester solvent, a sulfone solvent, a carbonate solvent, poly(ethylene oxide), an ionic liquid, a nitrile solvent, and / or combinations thereof.

The application discloses a polymer composite adsorbent, a synthesis method and a method for separating dimethylbenzene isomers. According to the difference in molecular structures of dimethylbenzene isomers, a 1-amino pyrene polymer composite adsorbent material is designed and synthesized, dimethylbenzene isomers are dispersed by using water as a medium, and the dimethylbenzene isomers are separated through multi-stage adsorption-desorption by using the difference in acting force between the dimethylbenzene isomers and polymer units. By using the method, OX with a purity higher than 99.0% (gas chromatography analysis) can be obtained when the separation ratio of PX / intermediate dimethylbenzene (MX) / ortho-xylene (OX) is 1 / 1 / 1, and MX with a purity higher than 98.5% (gas chromatography analysis) can be obtained when the separation ratio of PX / MX is 1 / 1, and the method has the advantages of low energy consumption.

An m-xylene adsorbent comprising 94 to 99.9 mass % Y molecular sieve and 0.1 to 6 mass % substrate, the Y molecular sieve consisting of an amorphous transition Y molecular sieve and a Y molecular sieve produced by crystal transformation, the amorphous transition Y molecular sieve being a mesoporous nano-Y molecular sieve having a crystal size of 20 to 450 nanometers, and two types of mesoporous pores having most likely pore diameters of 5 to 20 nanometers and 25 to 50 nanometers, respectively. The adsorbent is used for the adsorptive separation of m-xylene from mixed C8 aromatic hydrocarbons, and has good mass transfer performance, relatively high m-xylene adsorption selectivity and adsorption capacity.

Provided are: a solid composition capable of forming a coating film having excellent light resistance and impact resistance; a method for producing the solid composition; a powder coating material; and a method for producing a coated article. The solid composition of the present invention comprises: a fluorine-containing copolymer having a unit based on chlorotrifluoroethylene and a unit based on vinyl ether; a compound containing a piperidinyl group; ethylbenzene; and a mixed xylene containing o-xylene, m-xylene, and p-xylene.

The application discloses a separation and purification process of ultrahigh-purity p-xylene, and the main impurities contained in industrial-grade p-xylene are isomer impurities, such as m-xylene and o-xylene; the isomer impurities are difficult to be completely separated through common rectification due to the similar boiling points; the separation and purification difficulty is greatly reduced through a combined process of azeotropic rectification and normal-pressure rectification and with the aid of liquid-liquid layering; and the industrial-grade p-xylene with a purity of 99.5% can be purified to ultrahigh-purity 99.99% p-xylene. The application has the characteristics of simple process, simple operation and low material consumption.

The invention provides a reaction liquid, a method and a device for preparing m-toluic acid from m-xylene, and belongs to the field of fine chemical engineering. The reaction liquid for preparing the m-toluic acid is prepared from the following components in parts by weight: 100 parts of mixture containing m-xylene, 0.015 to 0.08 part of organic transition metal salt, 0.03 to 0.1 part of organic bromide ligand and 50 to 70 parts of reaction solvent. According to the method, a mixture containing m-xylene is taken as a raw material, a homogeneous metal catalyst compounded by organic transition metal salt and organic bromide ligand is taken as a catalyst system, and liquid-phase oxygen selective oxidation is carried out to prepare m-toluic acid; a micro-nano bubble reactor is adopted. The method has the advantages of short reaction time, high selectivity of m-toluic acid, low energy consumption, high synthesis efficiency, environmental protection and the like.

The invention discloses a benzophenone-based macrocyclic aromatic hydrocarbon BP [3] synthesized through pi-extension skeleton cyclization, and a synthesis method and application of the benzophenone-based macrocyclic aromatic hydrocarbon BP [3]. The macrocyclic aromatic hydrocarbon BP [3] has a unique cavity structure, an introduced benzophenone group provides abundant weak interaction sites, and guest molecules with matched sizes can be efficiently included. BP [3] shows an obvious solvent directional assembly characteristic in different solvents: an orthogonally interspersed three-dimensional supramolecular framework is formed in dichloromethane (CHCl), and a Z-shaped layered stacking structure is assembled in p-xylene (pXL). Experiments show that the BP [3] powder has excellent adsorption performance on benzene steam such as benzene (Bz), toluene (Tol), o-xylene (oXL), m-xylene (mXL) and p-xylene (pXL), the molar adsorption capacities of Bz and Tol are respectively as high as 1: 8 and 1: 5, and reversible desorption can be realized through heating. The invention provides a new strategy for the design of the macrocyclic aromatic hydrocarbon and the application of the macrocyclic aromatic hydrocarbon in the field of adsorption and separation of benzene pollutants.