73 results about "Trimethylbenzenes" patented technology

The invention relates to a method for synthesizing mesitylene by gas-phase non-hydroisomerization of unsym-trimethylbenzene, which comprises the following step of: contacting the unsym-trimethylbenzene with a catalyst under a gas-phase non-hydroisomerization reaction condition in the presence of the catalyst, wherein the catalyst is an EWT structure molecular sieve, the total pore volume of the EWT structure molecular sieve is 0.20-0.51 cm < 3 >. G <-1 >, and the mesoporous volume is 0.11-0.37 cm < 3 >. G <-1 >. According to the method disclosed by the invention, the EWT structure molecular sieve with an ultra-large pore channel structure is adopted as the catalyst, and when the catalyst is used for synthesizing mesitylene through unsym-trimethylbenzene gas-phase non-hydroisomerization, the distribution conditions of raw materials and products are improved, the conversion rate of unsym-trimethylbenzene and the selectivity and the mass yield of mesitylene are improved, heavy component carbon deposition is slowed down, and the yield of mesitylene is improved. The service life of the catalyst is prolonged.

The invention relates to the technical field of C9 heavy aromatics, in particular to a method and device for producing mesitylene from C9 heavy aromatics, and the method comprises the following steps: firstly, in the presence of a catalyst, mixing the C9 heavy aromatics with hydrogen, performing dealkylation isomerization reaction and dehydrogenation separation to obtain a liquid-phase product, and then performing two-stage separation on the liquid-phase product to obtain mesitylene. And mesitylene is produced to the maximum extent. The C9 heavy aromatics are subjected to selective dealkylation and trimethylbenzene isomerization reaction, and the obtained product does not contain propylbenzene, and the content of methyl-ethylbenzene is 1t; the method has the advantages that the yield of mesitylene is more than or equal to 0.2%, the interference of methyl ethyl benzene on the separation of the mesitylene is eliminated, the loss of the mesitylene is small, the one-way yield of the mesitylene is more than or equal to 12%, the reaction process is simple, the mesitylene and unsym-trimethylbenzene products are high in purity, the unsym-trimethylbenzene can be recycled to further increase the yield of the mesitylene, the process is flexible, byproducts are few, the product value is high, and the utilization value of C9 heavy aromatic hydrocarbon resources is obviously improved.

The invention belongs to the technical field of medical nano-materials, and particularly relates to a preparation method of a nano-metal covalent organic framework material for enhancing cell ferroptosis by consuming glutathione as well as an obtained product and application of the nano-metal covalent organic framework material. The material is prepared by the following steps: firstly, preparing a metal organic ligand Cu3-PyCA3; the preparation method comprises the following steps: firstly, preparing a metal organic ligand Cu3-PyCA3, then mixing the metal organic ligand Cu3-PyCA3, 2, 5-diethoxybenzene-1, 4-bis (formylhydrazine), mesitylene, 1, 4-dioxane and a trifluoroacetic acid solution, and then reacting to obtain a nano metal covalent organic framework Cu3-MCOF; and finally, uniformly mixing the activated hyaluronic acid solution and the Cu3-MCOF, and intensely stirring to obtain the Cu3-MCOF-coated HA. The nano-metal covalent organic framework provided by the invention can consume glutathione to enhance cell ferroptosis, and the nano-metal covalent organic framework Cu3-MCOF can quickly react with glutathione, so that the framework structure of the Cu3-MCOF is seriously damaged, the crystalline state disappears, a large number of ribbons are further assembled and generated, glutathione is consumed, and the ferroptosis of cells is enhanced. The ferroptosis tumor treatment enhancer has an application prospect.

The present application belongs to the technical field of aromatic hydrocarbon production, and relates to a method and system for producing trimethylbenzene and quarterphenyl by alkylation. Light aromatic hydrocarbons and methanol are used as raw materials, and alkylation is carried out under the catalysis of a modified molecular sieve catalyst and at a temperature of 250-600 DEG C. The material after alkylation is subjected to further alkylation under the catalysis of the modified molecular sieve catalyst and at a temperature of 250-600 DEG C. The modified molecular sieve catalyst is composed of a molecular sieve and a metal oxide supported in the molecular sieve, the molecular sieve is one or more of HY, Hbeta, IM-5, NU87, EU-1 and mordenite, and the metal in the metal oxide is one or more of Mg, Cu, La, Zn and Mo. The present application solves the technical problems of low content of trimethylbenzene and quarterphenyl components and difficult separation of trimethylbenzene and quarterphenyl in the industrial separation method by directly producing trimethylbenzene and quarterphenyl.

According to the method, a heteroatom EWT structure molecular sieve with a framework containing aluminum atoms and heteroatoms is adopted as a catalyst, the molecular sieve has the advantage of improving the utilization rate of an acid center, and when the molecular sieve is used for a gas-phase non-hydroisomerization reaction of the unsym-trimethylbenzene, the utilization rate of the acid center is increased; according to the present invention, the activity, the selectivity and the stability are high, the catalytic performance is significantly improved, the mesitylene selectivity and the mesitylene yield are higher than the heteroatom-free [Si, Al]-EWT structure molecular sieve, and the by-products such as tetratoluene and xylene are significantly reduced.

The present invention relates to a preparation method and application of a catalyst for catalyzing the production of mesitylene from trimethylbenzene. The method comprises the following steps: firstly preparing a multi-level pore Hβ zeolite molecular sieve, then mixing the multi-level pore Hβ zeolite molecular sieve with a hydrogen-type mordenite molecular sieve and a binder, adding a nitric acid solution and water, extruding the zeolite molecular sieve into strips, drying the strips and then calcining the strips at 500-750°C to obtain an unmodified catalyst I; performing impregnation modification on the unmodified catalyst I, then drying and calcining the strips to obtain a modified catalyst; and reducing the modified catalyst in a hydrogen atmosphere at 0.3-1MPa and 350-450°C to obtain a catalyst for isomerization of trimethylbenzene to mesitylene. The present invention utilizes a multi-level pore Hβ zeolite molecular sieve and a hydrogen-type mordenite molecular sieve to form a composite molecular sieve catalyst, then adding rare earth metals, Group VIII, Group IIIB and Group IVB as modifying elements, and reducing the catalyst with hydrogen to improve the selectivity and thermal stability of the catalyst, while increasing the life of the catalyst and improving the economic efficiency of the device.

The invention discloses a sulfonated aromatic hydrocarbon regulated biomass-based hard carbon material, a preparation method thereof and application of the sulfonated aromatic hydrocarbon regulated biomass-based hard carbon material in a sodium-ion battery. The preparation method of the biomass-based hard carbon material comprises the following steps: (1) carrying out solid-liquid mixing on biomass and an aqueous solution of sulfonated aromatic hydrocarbon, drying, and uniformly mixing the sulfonated aromatic hydrocarbon and the biomass; the selected sulfonated aromatic hydrocarbon comprises at least one of benzenesulfonic acid, aminobenzene sulfonic acid, benzene disulfonic acid, carboxyl benzenesulfonic acid, methyl benzenesulfonic acid and tritoluenesulfonic acid. And (2) carrying out two-stage carbonization, low-temperature pre-carbonization and high-temperature re-carbonization on the mixed material to obtain hard carbon, and then sequentially carrying out crushing, acid pickling, water washing and drying. And the sulfonated aromatic hydrocarbon substance guides ordered arrangement of the carbon layer through pi-pi stacking. The obtained biomass-based hard carbon material not only has high yield, but also has a graphite microcrystalline structure beneficial to sodium storage. The hard carbon structure obtained through optimization provides a large number of sodium storage sites, so that the sodium storage performance of the battery is improved.

The invention belongs to the technical field of preparation of herbicides, and particularly relates to a preparation method of tralkoxydim. The preparation method comprises the following steps: carrying out ethylation reaction on 3-hydroxy-5-(2, 4, 6-trimethylphenyl)-2-propoximido-cyclohex-2-ene-1-ketone and halogenated ethane under an alkaline condition, so as to prepare tralkoxydim. According to the method, the use of ethoxyamine hydrochloride or ethoxyamine in the traditional process is innovatively avoided, the raw material cost is reduced, the ethylation reaction is carried out by using halogenated ethane, the reaction raw materials are cheap and easy to obtain, meanwhile, single sodium / potassium halide wastewater is produced, the wastewater treatment process is greatly simplified, meanwhile, the generation of carnallite wastewater and carnallite-containing solid waste is eliminated, and the method is suitable for industrial production. The method has the advantages of environmental protection, economy and simple process, and is suitable for industrial large-scale production.

The invention discloses a method for preparing nitro-mesitylene through a micro-channel nitration reaction. The method comprises the following steps: respectively conveying mesitylene, fuming nitric acid and sulfuric acid to a micro-channel reaction module through a metering pump, and completing nitration reaction within a retention time of tens of seconds to several minutes. The introduction sequence of nitration reaction materials, the reaction retention time and the reaction temperature are cooperatively controlled, the nitration reaction is completed in the microchannel reactor in a continuous flow mode, operation is easy and convenient, safety is high, efficient continuous production can be achieved, meanwhile, emission of three wastes is reduced, and the industrial application advantages of being environmentally friendly and economical are achieved.

The application discloses a kind of by polydopamine mesoporous nanoparticles crosslinked sulfhydrylated hyaluronic acid hydrogel and its preparation method and application, with dopamine and 4-formylphenylboronic acid as monomer, with trimethylbenzene as and poloxamer as template agent, in weak alkaline (pH=8.4), oxygen exists in the environment, by the oxidation self-polymerization reaction between monomer Preparation of polydopamine nanoparticles with mesoporous structure.Then the water dispersion of polydopamine nanoparticles is mixed with sulfhydrylated hyaluronic acid solution according to certain proportion, and the hydrogel dressing with injectable property is prepared.The hydrogel is expected to be used as skin wound dressing for the treatment of diabetic wounds.

The present application relates to the technical field of catalyst preparation, and is a catalyst for producing mesitylene from C9 mixed aromatic hydrocarbons and a preparation method thereof.The former is a non-noble metal supported molecular sieve catalyst, the catalyst carrier comprises a molecular sieve and a binder, the molecular sieve accounts for 70% to 90% of the weight percentage of the catalyst carrier, the loading of each element accounts for 1wt% to 10wt% of the weight percentage of the catalyst carrier, and the total loading of elements accounts for 5wt% to 15wt% of the weight percentage of the catalyst carrier.The catalyst for producing mesitylene from C9 mixed aromatic hydrocarbons has good catalytic performance, is applied to the process of producing mesitylene from C9 mixed aromatic hydrocarbons as a catalyst for alkylation reaction and isomerization reaction, finally eliminates the interference of methyl ethyl benzene, maximizes the production of mesitylene, the content of methyl ethyl benzene is less than 0.5%, and the yield of mesitylene is greater than 25%.

The application mixes NaX type molecular sieve with kaolin mineral as a binder, then rolls into a ball, calcines at high temperature, converts kaolin into metakaolin, then treats with alkali, converts into X type molecular sieve in situ, then ion exchanges to prepare high selective adsorbent. The prepared adsorbent has high trimethylbenzene adsorption selectivity, compression strength and bulk density.

The present invention discloses a method for preparing curved carbon nanobelts by removing HCl by Pd catalysis, wherein the structure of the curved carbon nanobelts is shown as follows: wherein R is hydrogen, C 1‑20 Alkyl, C 1‑20 Alkoxy, mesitylene, phenyl or its large π extension derivative, n is 1 or 3. The product prepared by the method of the present invention can be regarded as a sidewall fragment of a (m, m)-type carbon nanotube. The present invention uses a compound with a borate group and a compound with a halogen to undergo Suzuki-Miyaura cross-coupling reaction and reductive aromatization reaction to obtain a carbon nanocyclic compound, and then further undergoes a Suzuki-Miyaura cross-coupling reaction and Pd-catalyzed deHCl to obtain armchair-type carbon nanobelts of different sizes. The synthesis method of the present invention is unique, the structure is novel, it has good photophysical properties, and it has potential applications in bottom-up growth of single-walled carbon nanotubes.

The application discloses a preparation method of a catalyst for catalyzing directional polycondensation of acetone to produce mesitylene and isophorone, and belongs to the field of catalysis technology. The catalyst is prepared by using a co-precipitation method to prepare magnesium-aluminum-zinc composite oxides, and simultaneously introducing active components and metal modified additive components in the co-precipitation process, and then drying and calcining to obtain a finished catalyst. The application realizes efficient synergistic effect of the active metal components and the additive metal components on the composite basic oxides and adjustment of the distribution of acid and base sites of the catalyst, so that the effect of co-producing isophorone and mesitylene through directional polycondensation of acetone is achieved. The catalyst prepared by the method is suitable for catalyzing polycondensation of acetone to co-produce isophorone and mesitylene, and has the advantages of simple preparation process, high catalytic activity and good stability.

The invention is applicable to the technical field of biomass energy catalysis and conversion, and provides a high-activity and high-stability nickel-cobalt alloy catalyst and a synthesis method and application thereof, and the synthesis method comprises the following steps: preparing S-1 zeolite; the preparation method comprises the following steps: mixing S-1 zeolite with an aqueous solution of Ni (NO3) 2.6 H2O and an aqueous solution of Co (NO3) 2.6 H2O for dipping, placing the mixture in a tetrapropylammonium hydroxide solution for hydro-thermal treatment, and performing static calcination to obtain a NixCoyO at S-1 nanocrystal; mixing the NixCoyO (at) S-1 nanocrystal with polymers P123, F127, dopamine hydrochloride and 1, 3, 5-trimethylbenzene, performing ultrasonic dispersion in a mixed solvent of water and ethanol, adding ammonia water for reaction, and collecting NixCoyO (at) S-1 (at) mPDA; and carrying out carbonization and reduction on the NixCoyO (at) S-1 (at) mPDA to obtain the NixCoy (at) S-1 (at) mC catalyst. The prepared catalyst has excellent hydrodeoxygenation performance, vanillin can be efficiently converted into 2-methoxy-4-methylphenol (MMP) under mild conditions, and the yield exceeds 94%.

The application relates to an asymmetric catalytic synthesis method and application of chiral azido tertiary alcohol and azulenic compound. The method is characterized in that under an air atmosphere, a racemic azido tertiary alcohol compound ((+ / -) I) and tri (4-methylphenyl) phosphorus (II) are reacted in toluene by taking chiral tartaric acid derivative phosphoric acid C1, a spirochiral phosphoric acid C2 or octahydroazulene phosphoric acid C3 as a chiral catalyst, the reaction is carried out at 30 DEG C for 17-72 hours, and target chiral azido tertiary alcohol compound (I) and chiral azulenic compound (III) are obtained through separation and purification. S I) and chiral azulenic compound (III) can be used for synthesizing chiral ligand IV, and deuterium water can be added in the reaction system to be used for synthesizing chiral deuterated azulenic compound (D-III).

The application relates to the technical field of catalyst materials, in particular to a preparation method and application of a catalyst for synthesizing dimethyl carbonate from carbon dioxide and methanol; the method comprises the following steps: A, poloxamer is configured into a solution, HAc, NaClO4 and 1,3,5-trimethylbenzene are added into the solution and uniformly mixed to obtain a mixture; B, (NH4)2Ce(NO3)6 and H2BDC are added into the mixed solution in step A, the obtained solid after reaction is centrifugally separated, washed, soaked and dried to obtain a primary product, and finally the catalyst is obtained through calcination; in the application, HF-UiO-66 is synthesized by taking F127 as a template agent and taking 1,3,5-trimethylbenzene (TMB) as an expanding agent; the derivative HF-CeO2 catalyst with different TMB adding amounts is prepared through calcination; the adding of the expanding agent greatly increases the specific surface area of the catalyst, the CeO2 crystal grains generated through calcination are small, the number of acid-base sites is greatly increased, and therefore the catalyst has the largest catalytic activity, and the DMC yield reaches 12.02 mmol DMC / g cat .

The invention discloses an aromatic hydrocarbon alkylation catalyst as well as a preparation method and application thereof. The catalyst comprises: 10 to 90 parts of a ZSM-5 molecular sieve; 0.05-10 parts of at least one selected from Co, Mo and La in terms of metal oxide; and 20-60 parts of a binder component. In an XRD diagram of the ZSM-5 molecular sieve, characteristic diffraction peaks of crystal faces (101), (200), (501) and (303) are broadened, and the aspect ratios of the broadened diffraction peaks are independently selected from 2-7. When the catalyst is used in a reaction for preparing C8 aromatic hydrocarbon, unsym-trimethylbenzene can be co-produced, and meanwhile, the content of m-xylene in xylene and the content of ethylbenzene in the C8 aromatic hydrocarbon are reduced, so that the quality of the product C8 aromatic hydrocarbon is improved.

The invention relates to a device and a process method for producing trimellitic anhydride by continuous liquid-phase oxidation of unsym-trimethylbenzene. The device comprises an oxidation reaction tower, a DTB crystallizer, a horizontal screw centrifuge, an anhydride forming tower and a rectifying tower which are connected in sequence, the oxidation reaction tower is provided with N feed ports and N gas inlets, wherein N is greater than or equal to 3; 2N distributors are arranged in the cavity of the oxidation reaction tower; and the distributor is respectively connected with the feeding hole and the air inlet. The whole technological process is simple, the equipment investment is low, the automation degree is high, the product yield is high, the quality is good, the overall energy utilization efficiency is high, and part of problems existing in an intermittent process are solved.

The invention belongs to the field of paint, and particularly relates to PU electrostatic spraying high-wear-resistance white matt finish paint and a preparation method thereof.The PU electrostatic spraying high-wear-resistance white matt finish paint is prepared from a component A, a component B and a component C. The component A is prepared from odorless matting resin, a wetting agent, a defoaming agent, matting powder, superfine ceramic powder, an organic silicon flatting agent, an anti-settling agent, conductive titanium dioxide slurry and xylene; the component B comprises a bright tripolymer, a matte tripolymer, an HDI (hexamethylene diisocyanate) tripolymer and butyl acetate; the component C comprises trimethylbenzene, cyclohexanone, a DBE high-boiling-point solvent, butyl acetate and an alcoholic solution of an amine salt compound; the conductive titanium dioxide slurry comprises odor-free matting resin, conductive titanium dioxide, a wetting agent and xylene. By means of the superfine ceramic powder, excellent hardness, wear resistance and certain whiteness can be provided for the coating, and the chemical stability of the coating is improved. The conductive titanium dioxide slurry can achieve the electrostatic surrounding effect, and multiple surfaces of a workpiece can be evenly oiled at the same time during electrostatic spraying.

The utility model discloses a waste gas trimethylbenzene detection device which comprises a device main body, and a detection mechanism is mounted at the upper end of the device main body; and the breaking contact prevention mechanism is arranged at the upper end of the device body and used for limiting the pipe fitting, an anti-skid pad is arranged in the breaking contact prevention mechanism, a storage assembly is installed at one end of the device body, and a hook rod is inserted into the storage assembly. According to the waste gas trimethylbenzene detection device, the broken touch prevention mechanism is mounted at the upper end of the device main body, so that the effects of conveniently supporting and rapidly limiting a gas conveying pipeline and conveniently and rapidly storing the gas conveying pipeline are achieved.

The invention discloses a method for decolorizing a bisphenol S crude product without using activated carbon, which comprises the following steps: mixing phenol and mesitylene, heating, adding concentrated sulfuric acid, heating, refluxing and separating water; filtering to obtain a bisphenol S crude product; the method comprises the following steps: dissolving a bisphenol S crude product in a mixed solution of alcohol and water, adding sodium sulfite, and heating and refluxing; and filtering while hot, evaporating the filtrate, and filtering to obtain bisphenol S solid. According to the method, a catalyst does not need to be added, a traditional activated carbon adsorption process is replaced by sodium sulfite pigment reduction, the problems that a bisphenol S product is unstable in chromaticity and prone to pink are effectively solved, and the product quality is remarkably improved. According to the method, the crude product is decolorized without using expensive wooden activated carbon, so that the production cost is reduced, no activated carbon solid waste is generated, the solid waste treatment cost of an enterprise is reduced, and the economic benefit of the enterprise is greatly improved.

The invention discloses a method for preparing durene by utilizing unsym-trimethylbenzene and methanol, which comprises the following steps: mixing unsym-trimethylbenzene, methanol and hydrogen, heating and gasifying, feeding into a fixed bed reactor, and carrying out alkylation reaction through a molecular sieve catalyst with hierarchical pore distribution to prepare durene, after a reaction product flowing out of the alkylation reactor is subjected to gas-liquid separation and oil-water separation, liquid-phase hydrocarbon components enter a rectification separation system, and light hydrocarbon with the carbon number of C6 or below, methylbenzene, xylene, trimethylbenzene, tetramethylbenzene and aromatic hydrocarbon fractions with the carbon number of C11 or above are separated out. The mesoporous channel of the catalyst increases the contact probability of the raw material and the active site of the molecular sieve, promotes the playing of the activity of the catalyst in a fixed bed, reduces the diffusion resistance of the raw material and the product, promotes the rapid diffusion of the product, and reduces the occurrence of side reactions, so that the conversion rate of unsym-trimethylbenzene and the selectivity of durene are improved; therefore, high durene yield can be obtained.

The present invention relates to the technical field of detection and analysis, and in particular to a method for determining the chromatographic purity of 2,4,6-trimethylbenzenesulfonyl chloride by utilizing HPLC. The method comprises the following conditions: a stationary phase is an octadecylsilane bonded phase, a mobile phase comprises a mobile phase A and a mobile phase B, the mobile phase A is a potassium dihydrogen phosphate buffered saline solution, and the mobile phase B is acetonitrile; the method can effectively separate 2,4,6-trimethylbenzenesulfonyl chloride, mesitylene, and a hydrolysis impurity 2,4,6-trimethylbenzenesulfonic acid in a 2,4,6-trimethylbenzenesulfonyl chloride product, has high separation degree and high sensitivity, does not generate interfering impurities, and can accurately determine the purity of the 2,4,6-trimethylbenzenesulfonyl chloride in the product.

The invention relates to the technical field of catalyst materials, in particular to a preparation method and application of a catalyst for synthesizing dimethyl carbonate from carbon dioxide and methanol. Comprising the following steps: A, preparing poloxamer into a solution, adding HAc, NaClO4 and 1, 3, 5-trimethylbenzene into the solution, and uniformly mixing to obtain a mixture; b, (NH4) 2Ce (NO3) 6 and H2BDC are added into the mixed solution in the step A, a solid obtained after reaction is subjected to centrifugal separation, washing, soaking and drying, a head product is obtained, and finally, the catalyst is obtained through calcination; according to the invention, F127 is used as a template agent, 1, 3, 5-trimethylbenzene (TMB) is used as an expanding agent to synthesize HF-UiO-66, and the HF-UiO-66 is calcined to prepare a derivative HF-CeO2 catalyst with different TMB addition amounts. The specific surface area of the catalyst is greatly increased due to the addition of the expanding agent, CeO2 crystal grains generated by calcination are reduced, and the number of acid-base sites is also increased in a large area, so that the catalyst has the maximum catalytic activity, and the DMC yield reaches 12.02 mmol DMC / gcat.

The application discloses a kind of catalysts for hydrogen storage material and its preparation method and application, belong to hydrogen storage material and its preparation technical field.The present application is to solve the problems such as high dehydrogenation temperature of existing magnesium-based solid hydrogen storage material and slow low-temperature kinetics.The present application is prepared by using nickel chloride hexahydrate, acetylacetone manganese, polyether P123, polyether P127, dopamine hydrochloride, 1,3,5-trimethylbenzene and ammonia as raw materials to obtain carbon as carrier wrapped with elemental Ni nanoparticle catalyst with a large number of edge dislocations, and is applied to Mg-based hydrogen storage material by ball milling method.The introduced dislocation has a dual role: not only directly accelerates the dissociation of H2 molecule, but also indirectly improves the activity of catalytic phase (Mg2NiH4 / Mg2Ni).The preparation process of the composite hydrogen storage material provided by the present application is simple and mature, and the raw materials are cheap and easy to obtain, only a small amount of MNC needs to be added to greatly improve the hydrogen storage performance of Mg, and it is convenient for large-scale industrial production.

The invention discloses a crude oil pour point depressant which comprises a main agent, an auxiliary agent and a high-flash-point organic solvent, and the mass ratio of the main agent to the auxiliary agent to the high-flash-point organic solvent is (25-35): (1-3): (62-74); wherein the main agent is formed by polymerizing ethylene-vinyl acetate, polyacrylic acid octadecanamide and alkyl maleimide according to a molar ratio of (2.8 to 3.2): (1.8 to 2.2): (1.8 to 2.2); the auxiliary agent is one or any combination of oleic acid diethanolamide, N-oleoyl sarcosine and hydroxy fatty acid; the high-flash-point organic solvent is one or any combination of trimethylbenzene, tetramethylbenzene, propylene glycol butyl ether and diethylene glycol monobutyl ether. The invention also discloses a preparation method and application thereof. The crude oil pour point depressant provided by the invention can effectively reduce the condensation point of high-condensation-point crude oil of which the condensation point is greater than 40 DEG C and improve the fluidity of the high-condensation-point crude oil of which the condensation point is greater than 40 DEG C, so that normal transportation of the crude oil is ensured, and powerful support is provided for reducing the operation cost of the high-condensation-point crude oil and ensuring normal transportation of the crude oil.

A method for separating trimethylbenzene monomers from heavy aromatics, comprising: after adsorption separation of heavy aromatic raw materials, obtaining an extract and a raffinate, recycling the desorbent in the extract, and the stream components being a mixture of three isomers of mesitylene, cymene and trimethylbenzene, with a total purity of not less than 99 mass%; and the mixture stream being sequentially subjected to rectification to obtain corresponding trimethylbenzene monomers; and the adsorption separation raffinate being recycled after recycling of the desorbent and being used as a gasoline blending component or a high-boiling aromatic solvent oil component. The method combines adsorption separation and rectification processes to obtain high-purity mesitylene, cymene and trimethylbenzene monomers, with the characteristics of high yield, good product quality, low operating energy consumption, and high product added value.

The present invention discloses an aggregation-induced luminescence material, nanoparticles, a preparation method and an application thereof, and relates to the technical field of luminescent materials. The structural formula of the aggregation-induced luminescence material is: wherein R is selected from one of the following structures: represents a connection site. The present invention uses 6,7-di(thiophene-2-yl)-[1,2,5]thiadiazole[3,4-g]quinoxaline as a strong electron acceptor, introduces benzene or 2,3-dihydrothiophene[3,4-b][1,4]dioxin at both ends as a rich electron donor / π bridge, and increases the dihedral angle with the acceptor as a large steric group, making the overall molecular skeleton more distorted, thereby ensuring its aggregation-induced luminescence characteristics. At the same time, dimethylbenzene or trimethylbenzene is used as an electron donor to extend the absorption and emission wavelengths. The aggregation-induced luminescence material can be used as a rotary motor for thermal energy conversion, has good photothermal conversion ability and reactive oxygen generation ability, and can be used for multimodal diagnosis and treatment of cancer.

The application belongs to the technical field of new materials, and particularly relates to a zinc-based complex and a preparation method and application thereof. The chemical general formula is [Zn3(TMTA)3(DPP).DMF.H2O], wherein Zn is a divalent zinc ion, TMTA is a deprotonated 4,4',4''-(2,4,6-trimethylbenzene-1,3,5) tribenzoic acid ligand, and DPP is a 4-(2,5-difluoro-4-bromophenyl) pyridine ligand. The zinc-based complex structure belongs to a triclinic system, a P-1 space group, the cell parameter is a, the axial angle alpha is 60.225(9)°, the axial angle beta is 73.437(8)°, the axial angle gamma is 84.579(7)°, the cell volume is V, and Z is 2. The zinc-based complex can be used for preparing adsorption materials, antibacterial materials, catalytic materials, photoelectric magnetic materials and drug carrier materials, belongs to a metal-organic framework structure, and is a composite functional porous material with great potential. The zinc-based complex can be applied to the field of low-carbon hydrocarbon gas separation.