22 results about "Acenaphthene" patented technology

The invention belongs to the technical field of organic porous materials, and relates to an acenaphthequinone diimine palladium functionalized super-crosslinked microporous polymer as well as a preparation method and application thereof. The preparation method specifically comprises the following steps: carrying out Friedel-Crafts alkylation reaction on (1E, 2E)-N1, N2-bis [2, 4, 6-tri-(benzhydryl phenyl)] acenaphthylene-1, 2-diimine and dimethyl formal, 1, 3, 5-triphenylbenzene or tetraphenylmethane, so as to obtain an organic porous polymer; and carrying out coordination on the organic porous polymer and PdCl2 to obtain the acenaphthequinone diimine palladium functionalized super-crosslinked microporous polymer with catalytic activity. The super-crosslinked microporous polymer has the advantages of high stability, large specific surface area and high palladium loading capacity, and can catalyze the direct C-H bond arylation reaction of brominated aromatic hydrocarbon and heteroaromatic hydrocarbon to synthesize a linked heteroaryl compound; the preparation method of the organic porous polymer catalytic material is simple and suitable for industrial production.

The invention relates to the technical field of environmental remediation microorganisms, and discloses a mixed polycyclic aromatic hydrocarbon degrading bacterium G3 suitable for variable environments and application thereof. The bacterial strain is pseudoxanthomonas sp. G3, and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC M 20251828. The strain G3 is enriched and separated from soil of a certain coking plant in Beijing, can utilize polycyclic aromatic hydrocarbons such as acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene as a single carbon source, and can simultaneously degrade acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene mixtures within 14 days, so that the degradation rate of each component is not lower than 70%; good growth and degradation activity are maintained under the conditions that the temperature is 20-37 DEG C, the salinity is 0-4% NaCl and the pH value is 5.0-9.0, and the degradation rates can reach 100% and 84.15% respectively after the strain is cultured in a single carbon source culture solution with the initial concentration of phenanthrene and pyrene being 50 mg.L <-1 > for 7 days; after the polycyclic aromatic hydrocarbon aging polluted soil is cultured for 28 days, the mixed polycyclic aromatic hydrocarbon in the soil can be effectively removed. According to the invention, the technical bottlenecks of poor environmental adaptability and low mixed pollutant degradation efficiency of the existing degrading bacteria are solved. Therefore, the strain has good application potential in the aspect of bioremediation of the polycyclic aromatic hydrocarbon polluted environment.

This invention provides a resin composition and its application. The resin composition comprises a combination of an acenaphthene-modified polymer and a component containing C=C unsaturated bonds. The monomers of the acenaphthene-modified polymer include acenaphthene and a polyfunctional vinyl aromatic compound, and the molar percentage of acenaphthene in the monomers is 10-90%. Based on a total mass of 100 parts for the acenaphthene-modified polymer and the component containing C=C unsaturated bonds, the mass of the acenaphthene-modified polymer is 10-80 parts. This invention, through the design of the acenaphthene-modified polymer and its mutual compounding with the component containing C=C unsaturated bonds, enables the resin composition and the prepreg and metal foil laminate containing it to have high glass transition temperatures, excellent heat resistance, dielectric properties, resistance to damp heat, and filler properties, significantly improving the internal consistency of the substrate and fully meeting the performance requirements of high-transmission-rate substrates.

The invention particularly relates to a fluorescent probe compound, a preparation method and application of the fluorescent probe compound to detection of sulfite. The fluorescent probe TM2 capable of being used for detecting HSO3 <-> is designed and synthesized by taking acenaphthene imidazole as a parent body, and the structure of the fluorescent probe TM2 is shown in the specification. The compound can be used as a ratio type fluorescent probe for measuring HSO3 <->, and an analysis method established based on TM2 has the characteristics of quick response, good selectivity, high sensitivity, mild conditions and the like, and can be widely used for measuring the content of HSO3 <-> in a liquid environment.

The application discloses a kind of vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediates and catalyst prepared from it, intermediate and the preparation method and application of catalyst. 2,4,6-tri-tert-butyl aniline is used as raw material, in the presence of catalyst, under the condition of 120 DEG C, the vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediate with structure as shown in formula (I) is obtained.Compared with prior art, the application uses commercially available, low-cost and storage condition loose 2,4,6-tri-tert-butyl aniline instead of high-cost, storage harsh 2,4-di-tert-butyl aniline as reaction raw material, which effectively reduces the raw material procurement threshold and comprehensive production cost, and simplifies the storage condition.The raw material of the method is easy to obtain, low in cost, easy to operate, high in yield, and suitable for industrial scale-up production.

The present application relates to a kind of device and method for extracting high-purity chemicals from coal tar wash oil fraction, comprising: naphthalene separation column, methylnaphthalene separation unit, acenaphthene-fluorene-dibenzofuran separation unit;Methylnaphthalene separation unit includes methylnaphthalene separation tower, β-methylnaphthalene subunit and α-methylnaphthalene subunit connected in sequence;Acenaphthene-fluorene-dibenzofuran separation unit includes light removal tower, acenaphthene subunit, dibenzofuran subunit and fluorene subunit connected in sequence;The material outlet of the bottom of naphthalene separation column is connected with methylnaphthalene separation tower;The material outlet of the bottom of methylnaphthalene separation tower is connected with the material inlet of light removal tower.The device provided by the present application can effectively extract target chemicals in coal tar wash oil fraction by reasonable configuration of the device and coupling cooperation between devices, and obtain high-purity products.Compared with existing wash oil extraction chemical technology, it has higher efficiency, wider applicability and better product quality.

This invention discloses an asymmetric (α-diimine) nickel-olefin catalyst based on ethylene acenaphthene as its framework, its preparation method, and its applications. The structural formula of the catalyst is shown in Formula (I), where X is chlorine or bromine. The catalyst has a simple preparation process and exhibits results contrary to conventional experimental observations when catalyzing ethylene polymerization: larger substituents lead to higher crystallinity in the polymerization product. Furthermore, this type of catalyst also exhibits good thermal stability and polymerization activity, showing promising prospects for industrial applications. Formula (I)

The invention relates to the field of low dielectric materials, and provides a benzocyclobutene modified acenaphthene derivative as well as a preparation method and application thereof. At least one substituent group on an acenaphthene ring in the molecular structure of the benzocyclobutene modified acenaphthene derivative provided by the invention comprises a BCB group. The benzocyclobutene modified acenaphthene derivative is prepared by carrying out coupling reaction on acenaphthene and / or an acenaphthene derivative and a benzocyclobutene derivative. The benzocyclobutene modified acenaphthene derivative has a total hydrocarbon structure, resin prepared by taking the benzocyclobutene modified acenaphthene derivative as a raw material has lower dielectric constant and dielectric loss when being used for a photoelectric material and has excellent thermal stability, and the performance of the acenaphthene derivative is regulated by regulating substituent groups on an acenaphthene ring; and the application in the fields of high-performance PCBs, packaging and the like can be met.

The application discloses a flexible mono-arylmethyl alpha-diimine palladium (II) catalyst and application thereof in catalytic polymerization of ethylene. The catalyst has 1,2-acenaphthene and 2,3-butanedione as a core skeleton, and successfully realizes high branching degree and wide molecular weight adjustment of polyethylene by skillfully introducing a flexible mono-arylmethyl structure. The catalyst has significant polymerization activity, which is between 1.6 and 15.1*10 4 g / (mol Pd·h). Compared with traditional rigid ortho-aryl and ortho-di-arylmethyl Pd(II) catalysts, the flexible catalyst can significantly improve the branching density, and provides a highly flexible means for adjusting the viscosity of PAO lubricating oil base oil. In the copolymerization reaction of ethylene and methacrylic acid, the flexible catalyst also exhibits excellent performance, which is superior to rigid counterparts in promoting MA insertion, and further verifies the broad application prospect of the flexible catalyst in synthesis of polar functionalized polyethylene.

The invention provides a preparation method of an iron-based catalyst, and belongs to the field of chemical synthesis. The invention provides a preparation method of an iron-based catalyst, which comprises the following steps: mixing a potassium source, iron oxide, a pore-foaming agent, a cocatalyst and an adhesive, and calcining to obtain the iron-based catalyst, the potassium source comprises potassium oxide and / or potassium carbonate; on the basis of K2O, the mass ratio of the ferric oxide to the potassium source is (4-99): 1; the mass of the pore-foaming agent is 4-30% of the total mass of the potassium source, the iron oxide, the pore-foaming agent, the cocatalyst and the adhesive; the calcining temperature is 750 to 850 DEG C. By limiting the ratio of iron to potassium, the content of the pore-foaming agent and the calcination temperature, the content of active ingredients of the iron-based catalyst is increased, and the activity and the stability of the iron-based catalyst are improved, so that the iron-based catalyst can effectively promote dehydrogenation reaction of acenaphthene and ethylbenzene, and the conversion rate of acenaphthene and ethylbenzene and the selectivity of acenaphthene and styrene are improved.

The application provides a degradation method of polycyclic aromatic hydrocarbons in coal gangue and application thereof, and the degradation method comprises the following steps: mixing coal gangue, microbial strains with biological weathering, microbial strains for degrading polycyclic aromatic hydrocarbons, nutrients and water, and culturing, so that the degradation of polycyclic aromatic hydrocarbons in the coal gangue is completed; the polycyclic aromatic hydrocarbons include any one or a combination of at least two of naphthalene, acetylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3-c,d]pyrene, benz[a,h]anthracene and benzo[g,h,i]perylene. The degradation method of polycyclic aromatic hydrocarbons in the coal gangue provided by the application can simultaneously degrade multiple polycyclic aromatic hydrocarbons, and has good degradation effect.

The invention provides preparation of an alpha-diimine nickel complex and application of the alpha-diimine nickel complex in olefin polymerization. The complex is synthesized by reacting acenaphthequinone with a specific aniline compound in glacial acetic acid and acetonitrile to generate a ligand and then coordinating with Ni (DME) Br2 in an inert atmosphere. The complex shows excellent catalytic activity and thermal stability in polymerization of ethylene and long-chain alpha-olefin, the highest polymerization activity of the complex in 1-octylene can reach 3.54 * 10 < 5 > g.mol <-1 >. H <-1 >, and efficient catalysis can be kept in a wide temperature range; according to the present invention, by adjusting the steric hindrance of the ligand substituent, the accurate regulation and control of the molecular weight, the branching degree and the distribution of the polymer can be achieved, the defect of insufficient activity of the existing alpha-diimine nickel catalyst in the long-chain alpha-olefin polymerization is made up, and the alpha-diimine nickel catalyst has characteristics of high thermal stability, adjustable structure and high catalytic activity, and has good industrial application potential.

A bidentate phosphite ligand comprises a backbone having a structure of acenaphthene-1,2-diol in which the hydrogen atoms of the hydroxyl groups have each been replaced by a P(OR1)2 group, where R1 is an aryl radical. When combined with a transition metal, such as nickel, the ligand provides a catalyst complex useful in hydrocyanation and other reactions.

This invention discloses a phenyl-modified, biasymmetric (α-diimine) nickel olefin catalyst based on ethylene acenaphthene quinone as its framework, its preparation method, and its applications. The catalyst's structural formula is shown in Formula (I), where X is chlorine or bromine. This catalyst has a simple preparation process and, when used as a co-catalyst for ethylene polymerization, exhibits results contrary to conventional experimental observations: larger substituents lead to lower molecular weight polymers with better flowability and dispersibility, showing broad application prospects in the elastomer field. Furthermore, this catalyst also exhibits good thermal stability and polymerization activity, demonstrating promising industrial application potential. Formula (I).

This invention provides a resin composition, a prepreg, a metal foil-coated laminate, and their applications. The resin composition comprises unsaturated polyphenylene ether and an acenaphthene-modified polymer, wherein the mass ratio of the acenaphthene-modified polymer to the unsaturated polyphenylene ether is 1:(0.2-5). The monomers of the acenaphthene-modified polymer include a combination of acenaphthene and polyfunctional vinyl aromatic compounds, and the molar percentage of acenaphthene in the monomers is 10-90%. Through the design of the acenaphthene-modified polymer and its compounding and synergistic effect with the unsaturated polyphenylene ether, the resin composition and the prepreg and metal foil-coated laminate containing it exhibit high glass transition temperatures, excellent performance in heat resistance, dielectric properties, dielectric loss stability, damp heat resistance, and dimensional stability, and good filling performance, greatly improving the internal consistency of the substrate and meeting the performance requirements of high transmission rate substrates.

The invention belongs to the technical field of chemical catalysis, and particularly relates to a manganese catalyst as well as a preparation method and application thereof. According to the manganese catalyst provided by the invention, aluminum oxide is taken as a carrier, manganese dioxide is taken as a main active component, cerium oxide is added as an active auxiliary agent, and the three components are compounded to efficiently catalyze an acenaphthene dehydrogenation reaction to prepare acenaphthene, so that acenaphthene preparation with high conversion rate and high selectivity is realized. By controlling the composition and the preparation method of the manganese-series catalyst, the manganese-series catalyst is further endowed with high catalytic activity and high stability. According to the method, acenaphthene is used as a raw material, acenaphthene is prepared through dehydrogenation of the gas-solid phase catalytic reaction, and acenaphthene is prepared with high conversion rate and high selectivity under the cooperation of specific reaction conditions. The production efficiency of acenaphthene is improved, and the production cost is reduced.

The application provides a 1,8-naphthalene anhydride production method for co-production of manganese sulfate, and belongs to the technical field of 1,8-naphthalene anhydride preparation. The application comprises the following steps: 1) adding water or manganese sulfate mother liquor into a sulfuric acid corrosion resistant reaction kettle, and then adjusting the concentration of sulfuric acid in the reaction kettle; 2) adding industrial acenaphthene into the reaction kettle in step 1), uniformly stirring, and then adding manganese dioxide for oxidation reaction; 3) after the reaction is completed, filtering out 1,8-naphthalene anhydride and 1,8-naphthalene anhydride crude product while hot, concentrating the filtered mother liquor to precipitate manganese sulfate, and filtering out manganese sulfate crystals and manganese sulfate mother liquor while hot; 4) mixing the 1,8-naphthalene anhydride crude product with lye, heating and stirring, filtering out insoluble substances, precipitating 1,8-naphthalene anhydride, filtering again, and drying to obtain the product 1,8-naphthalene anhydride. The application does not need special reaction equipment, and can be realized by using common fine chemical reaction equipment. Therefore, the fixed asset investment is small, and the operation is flexible.

A bidentate phosphite ligand comprises a backbone having a structure of acenaphthene-1,2-diol in which the hydrogen atoms of the hydroxyl groups have each been replaced by a P(OR1)2 group, where R1 is an aryl radical. When combined with a transition metal, such as nickel, the ligand provides a catalyst complex useful in hydrocyanation and other reactions.

The invention relates to a synthesis method for preparing perhydroacenaphthene, which comprises the following steps: by taking industrial acenaphthene as a starting material, adding Raney nickel, heating and dehydrating, then carrying out a hydrogenation heating and boosting reaction without participation of a solvent in the whole reaction process, standing, pressing the upper layer into a precision filter through a guide pipe to obtain a crude product filtrate, and continuously applying a catalyst in a kettle and a small amount of catalyst in the filter, thereby obtaining the perhydroacenaphthene. And carrying out vacuum rectification on the crude product filtrate to obtain colorless liquid perhydroacenaphthene (containing isomers) with the purity of more than or equal to 99.50% and the yield of more than or equal to 90.5%. According to the present invention, the solvent is not used, the yield is improved, the small amount of the catalyst is used for filtration in the later stage, the operation is simple, the industrialization is easy, the rectification product purity is high, the market demand is easily met, the product yield is high, and the equipment requirement is low so as to solve the technical problems in the background technology.

This invention relates to the field of alkyl adamantane, and discloses an alkyl adamantane, its preparation method, and its application. The method includes: (1) in the presence of hydrogen and a solvent, contacting acenaphthene with a first catalyst to perform a hydrogenation reaction, obtaining a product containing perhydroacenaphthene; wherein the yield of perhydroacenaphthene in the product containing perhydroacenaphthene is ≥95%; (2) in a hydrogen atmosphere, contacting the product containing perhydroacenaphthene with a second catalyst to perform an isomerization reaction, obtaining alkyl adamantane; wherein the second catalyst includes a second support and a second active component, the second support including a dopant component and a molecular sieve support, the dopant component being a rare earth metal element, and the second active component selected from at least one of Pt, Au, Ir, Ru, Rh, and Pd. This preparation method can reduce the occurrence of cracking side reactions and improve the yield of alkyl adamantane.

The invention belongs to the technical field of electronic-grade resin, and particularly relates to acenaphthene alkenyl fluorine-containing hydrocarbon resin for an M9-grade copper-clad plate and a preparation method thereof.The preparation method comprises the following steps that S1, fluorine-containing monomer preparation is conducted, specifically, dicyclopentadiene is cracked and distilled to obtain fresh cyclopentadiene, pentafluorostyrene and the fresh cyclopentadiene are mixed according to the molar ratio of 1: 1.2-1.5, and a fluorine-containing monomer is obtained; 5-(pentafluorophenyl)-2-norbornene with the purity being greater than or equal to 99.95%, namely a fluorine-containing monomer, is obtained through D-A reaction, post-treatment and refining; s2, preparation of a mixed monomer: mixing an acenaphthylene monomer with a fluorine-containing monomer, and purifying to obtain a refined mixed monomer with the purity being greater than or equal to 99.95%; s3, polymerization reaction: carrying out addition polymerization reaction on the refined mixed monomer, a metallocene catalyst and an organic solvent under the protection of inert gas to obtain a crude product; s4, purification treatment: purifying the crude product to obtain hydrocarbon resin of which the purity is greater than or equal to 99.99%; and S5, post-treatment: preparing the purified hydrocarbon resin into finished resin.

This invention discloses a acenaphthene-bisasymmetric α-diimide chemical intermediate, a catalyst prepared from it, the intermediate itself, a method for preparing the catalyst, and its applications. Using 2,4,6-tri-tert-butylaniline as a raw material, a acenaphthene-bisasymmetric α-diimide chemical intermediate with the structure shown in formula (I) is obtained in the presence of a catalyst. Compared with existing technologies, this invention uses readily available, inexpensive, and easily stored 2,4,6-tri-tert-butylaniline as a reaction raw material instead of expensive and demanding 2,4-di-tert-butylaniline, effectively reducing the raw material procurement threshold and overall production costs, and simplifying storage conditions. The method of this invention uses readily available raw materials, is low-cost, simple to operate, and has a high yield, making it suitable for industrial-scale production.