329 results about "Sumanene" patented technology

The invention relates to a petroleum polluted soil polycyclic aromatic hydrocarbon migration path simulation experiment system, which comprises a main reaction cabin, a mechanical arm collaborative operation module, a multi-mode sensing module, a whole natural environment regulation and control module and an edge intelligent decision-making platform, an annular magnetic suspension track is arranged at the top of the main reaction cabin, and a soil sample chamber is arranged at the bottom of the main reaction cabin; the multi-modal sensing module comprises an EIT (electrical impedance tomography) module, an LIBS (laser-induced breakdown spectroscopy) module and a terahertz time-domain spectroscopy module and is used for measuring global conductivity distribution of soil in a soil sample chamber, inverting the porosity of the soil sample and a pollutant concentration field in pore water, analyzing the concentration of carbon, hydrogen and oxygen elements of pollutants and specifically detecting polycyclic aromatic hydrocarbon molecules; the edge intelligent decision-making platform interacts with the multi-mode sensing module, the full-natural-environment regulation and control module and the mechanical arm collaborative operation module to actively adjust system parameters, and repair intervention is carried out on soil body degradation. And automatic preparation of the polluted soil can be realized, and migration monitoring under different practical engineering application working conditions can be realized.

The invention discloses a method for preparing humic acid by graded oxidation and depolymerization of lignite, which comprises the following steps: weighing lignite, adding hydrogen peroxide for oxidation pretreatment, filtering and vacuum drying to obtain primarily oxidized lignite named as PTSL; and carrying out a deep oxidation experiment on the obtained PTSL by using a mixed gas of ozone and oxygen, after the oxidation reaction is finished, carrying out centrifugal filtration on the mixture, and collecting a liquid sample. The lignite is subjected to gradient oxidation depolymerization in a graded oxidation mode, the green oxidant hydrogen peroxide firstly oxidizes and breaks weak bridge bonds and side chain structures in the lignite without damaging aromatic ring structures, then the lignite is further deeply oxidized through the strong oxidant ozone, polycyclic aromatic hydrocarbon structures in the lignite are gradually damaged, and the content of the polycyclic aromatic hydrocarbon in the lignite is reduced. The step-by-step oxidative depolymerization of the organic matters in the coal is realized. According to the method, the organic matter conversion rate and the humic acid yield of the lignite can be improved, and the impurity content in the humic acid is reduced.

The invention discloses a Pseudomonas nicosulfurones bacterial strain and an application of the Pseudomonas nicosulfurones bacterial strain in degradation of phenanthrene and benzopyrene. According to the invention, a degradation strain Pseudomonas nicosulfurensis DY-8, which takes phenanthrene and benzopyrene as carbon sources, is obtained by domestication, separation and identification from petroleum-polluted soil in Ningbo. The invention also relates to a method for preparing the degradation strain Pseudomonas nicosulfurensis DY-8 with phenanthrene and benzopyrene as carbon sources. The DY-8 can utilize phenanthrene and benzopyrene as carbon sources, and after the DY-8 is cultured in an inorganic salt culture solution with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 70% or above. Therefore, the strain has good application potential in the aspect of bioremediation of polycyclic aromatic hydrocarbon.

The invention relates to a nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe and a preparation method and application thereof, the nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe is characterized in that the structural formula of the nitrogen-containing bowl-shaped conjugated pH-responsive fluorescent probe is # imgabs0 #, and R is hydrogen, acetyl or p-toluenesulfonyl. Compared with the prior art, the nitrogen-containing bowl-shaped conjugated molecule provided by the invention shows a highly sensitive response characteristic in an acid-base medium. Due to the introduction of nitrogen atoms, the electronic structure of molecules is obviously changed, lone pair electrons of the nitrogen atoms can participate in the reaction, and the protonation behavior is obvious under the acidic condition. After protonation, the fluorescence intensity of the molecule is obviously enhanced, and the emission wavelength has obvious red shift, so that the probe has important application value in the aspect of developing a high-sensitivity acid-base sensor. In addition, the nitrogen-containing polycyclic aromatic hydrocarbon compound also shows application prospects in the fields of organic light-emitting diodes, information safety, biological imaging and the like.

To provide a light-emitting compound having a narrow half-value width and a stable skeleton, for example a novel polycyclic aromatic compound applicable to blue light emission, and to provide a method for producing a light-emitting compound that is capable of producing such a polycyclic aromatic compound, preferably using a non-noble metal catalyst, which is suitable for a sustainable society.SOLUTION: According to one embodiment of the present invention, a light-emitting compound is a polycyclic aromatic compound represented by the following formula (I).SELECTED DRAWING: None

The invention discloses a hydroxyl polycyclic aromatic hydrocarbon Raman spectrum detection method based on a dynamic weighted voting fusion network, relates to the technical field of hydroxyl polycyclic aromatic hydrocarbon detection, and provides an effective method which is rapid, accurate and free of chromatographic separation. Spectral information of OH-PAHs is obtained by using surface enhanced Raman spectroscopy SERS, and a Raman spectrum is obtained through density functional theory DFT calculation. A dynamic weighted voting fusion network DWVF-Net model is constructed, wherein the model comprises two core parts of cross-modal attention fusion (CMAF) and dynamic weighted voting (DWV). The CMAF dynamically weights key areas of SERS and DFT Raman spectrums through cosine similarity to realize feature fusion; and the DWV adaptively adjusts the weight of the model according to the real-time performance of the model, and optimizes an integration decision. Through the synergistic effect of CMAF and DWV, complementary information of SERS and DFT Raman spectrums is effectively fused, and the adaptability advantage of a dynamic weighting mechanism in the aspect of processing a complex data environment is verified.

The invention relates to the technical field of water treatment, in particular to a method for treating degradation-resistant organic pollution underground water based on a micro-interface strengthening technology. According to the technical scheme, the method comprises the steps that an underground water sample is collected and subjected to pollution characteristic analysis, composite material slurry is injected into a water-containing layer to construct an interface-enhanced in-situ reaction system, and the slurry is composed of nanoscale iron-based metal particles, graphene oxide derivatives, modified biochar, a surfactant and the like; meanwhile, a low-pressure gas injection system is arranged to form a micro-aerobic environment so as to improve the interface reaction efficiency, dominant microbial communities are synchronously injected, a slow-release carbon source carrier is added so as to strengthen the biological synergistic degradation effect, and the operation state of the system is regulated and controlled through multi-parameter monitoring. According to the method, a micro-interface synergistic system integrating physical adsorption, chemical reduction and biological metabolism is constructed, refractory organic pollutants such as aryl halide and polycyclic aromatic hydrocarbon in underground water can be efficiently and stably removed, and the method has the advantages of being high in remediation efficiency, high in operation stability and wide in environmental adaptability.

The invention relates to an aza-polycyclic aromatic hydrocarbon organic ligand and a preparation method thereof, an aza-polycyclic aromatic hydrocarbon assembled molecular cage and a preparation method and application thereof, the organic ligand takes dimethyl methylene bridged triphenylamine as a core, a benzene ring is modified by an R group, and the molecular cage is prepared from the organic ligand, the organic ligand and the aza-polycyclic aromatic hydrocarbon. A metal organic caged compound obtained by a coordination reaction with a metal complex; the molecular cage is of a truncated tetrahedral structure of twelve metals and eight ligands; each organic ligand is provided with three equal side arms which are wrapped and stacked together in a curved surface manner to form a pseudo six-section ligand; the organic ligands and the metal nodes are self-assembled to form a molecular cage with a hydrophobic cavity for recognizing guest molecules in the center. Compared with the prior art, the organic ligand has flexibility and is combined with metal to construct a novel water-soluble metal organic double-wall knotted flexible molecular cage, a size-adjustable cavity exists in the molecular cage, and selective recognition of nucleotide negative electricity biomolecules in a water phase is achieved.

The invention discloses a bacterium DY-11 for degrading phenanthrene and benzopyrene in petroleum-contaminated soil and application of the bacterium DY-11. The bacterial strain is Achromobacter expander DY-11, and the preservation number of the bacterial strain is GDMCC No: 66005. Experiments prove that the strain DY-11 can respectively utilize phenanthrene and benzopyrene as carbon sources to degrade phenanthrene and benzopyrene, and after the strain DY-11 is cultured in inorganic salt culture solutions with the initial concentration of phenanthrene and benzopyrene being 50 mg.L <-1 > and 25 mg.L <-1 > respectively for 7 days, the degradation rates of phenanthrene and benzopyrene can reach 65% or above. Therefore, the DY-11 is a strain which can degrade phenanthrene and benzopyrene and has very strong tolerance to phenanthrene and benzopyrene, has strong adaptability to polycyclic aromatic hydrocarbons, and has better application potential in the aspect of bioremediation.

The invention discloses a preparation method of recombinant catechol-2, 3-dioxygenase and an application of the recombinant catechol-2, 3-dioxygenase. According to the invention, a novel catechol-2, 3-dioxygenase group C23O927 is identified from a constructed metagenome library, and the catechol-2, 3-dioxygenase group C23O927 is a key enzyme for catalyzing degradation of polycyclic aromatic hydrocarbon pollutants. A C23O927-pET32a (+) recombinant expression vector is constructed and converted into host bacteria, heterologous expression of target protein is achieved, and the prepared recombinase belongs to acid enzymes and has good resistance to high temperature, acid, alkali, high-concentration metal ions, organic solvents and surfactants. The recombinase provided by the invention can be used in an acidic environment, has very good enzymatic activity, can catalytically degrade various catechol compounds, can be better used for treating polycyclic aromatic hydrocarbon polluted environments, and has important significance for developing more products which can tolerate various extreme environments and efficiently catalyze degradation of polycyclic aromatic hydrocarbons.

A process for producing a purified carbon black with a reduced content of oxidized polycyclic aromatic hydrocarbons, such as oxy-polycyclic aromatic hydrocarbons (oxy-PAHs) and / or nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) is provided. The process comprises providing a carbon black comprising an initial content of oxidized polycyclic aromatic hydrocarbons, and subjecting the provided carbon black to a thermal treatment comprising heat treating the carbon black at a temperature of less than 280°C in a vacuum or inert gas atmosphere. Also disclosed are purified carbon blacks obtainable by such process, and applications and uses of these purified carbon blacks.

To provide materials for organic devices such as materials for organic EL elements, comprising compounds different from conventional ones, in order to increase options for materials for organic EL elements.SOLUTION: Options for materials for organic devices such as materials for organic EL elements are increased by condensing a cycloalkane to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.SELECTED DRAWING: None

The invention discloses a carbon-based polycyclic aromatic hydrocarbon adsorbent and a preparation method and application thereof.The preparation method comprises the steps that firstly, a mixture of a pretreated coconut shell material and a modifier is subjected to high-temperature treatment to obtain a carbonized material, then the carbonized material is immersed in an activating solution to be subjected to low-temperature treatment, and then filtering, washing to be neutral and drying in the shade at the room temperature are conducted to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. Carrying out secondary high-temperature treatment to obtain an activated material; and crushing and sieving the activated material to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. The carbon-based polycyclic aromatic hydrocarbon adsorbent has obvious advantages in the selective adsorption and removal process of polycyclic aromatic hydrocarbon, silicon species are introduced in the carbonization process, a microporous structure in a carbon material is destroyed in a pillared mode, then the pore structure of the catalyst is regulated and controlled, the mesoporous structure is richer, and the adsorption selectivity of the polycyclic aromatic hydrocarbon is improved; the adsorbent has high adsorption capacity and adsorption selectivity.

The invention provides haematococcus alternatus and application thereof. The classification of the haematococcus alternatus is named as Alterrythrobacter sp. H2, and the classification of the haematococcus alternatus is named as Alterrythrobacter sp. The preservation unit is China General Microbiological Culture Collection Center (CGMCC); the address is Institute of Microbiology, Chinese Academy of Sciences, No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing; the preservation date is July 29, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.31487. The alternated red bacillus provided by the invention can degrade various polycyclic aromatic hydrocarbons under various environmental conditions of high salt, high temperature, low temperature, acidity, alkalinity, chromium combined pollution, arsenic combined pollution and the like.

The invention provides a full-automatic online detection method for trace polycyclic aromatic hydrocarbon derivatives (SPAHs) in water, which comprises the following steps: (1) pretreatment: standing a water sample, centrifugally filtering to remove suspended matters, adding a prepared mixed standard solution, and directly loading on a machine; (2) enrichment and separation: adopting a Turbo flow C18-XL on-line solid phase extraction column to realize automatic enrichment and matrix purification of the 15 SPAHs, and combining an ultra-high performance liquid chromatography gradient elution program (methanol-ultrapure water system) to realize efficient enrichment and separation; and (3) detection and analysis: performing Full MS-ddMS2 scanning in an APCI (Amplified Peripheral Component Interconnect) source-Orbitrap high-resolution mass spectrum positive and negative ion switching mode to realize synchronous detection of hydroxyl, nitro and oxygen-containing SPAHs. According to the method, a unified detection system covering six hydroxyl polycyclic aromatic hydrocarbons, six oxygen-containing polycyclic aromatic hydrocarbons and three nitro polycyclic aromatic hydrocarbons is constructed for the first time, the detection limit is as low as 0.02 ng / L, and compared with a traditional GC-MS method, the sensitivity is greatly improved, and the sample pretreatment time is greatly shortened. Compared with the prior art, derivatization treatment is not needed, continuous sample injection is achieved through an online solid-phase extraction column regeneration technology, complex matrix interference is effectively eliminated in cooperation with a dynamic elimination function, and a high-sensitivity and high-throughput analysis method is provided for ecological risk assessment of trace SPAHs in underground water and surface water.

The invention provides a microwave remediation efficiency prediction method for polycyclic aromatic hydrocarbon contaminated soil, and belongs to the field of physical remediation of soil. The method comprises the steps that soil parameters, remediation parameters based on microwave soil remediation and the polycyclic aromatic hydrocarbon removal rate are obtained; based on a data fitting method, determining a corresponding relation between the soil parameter and / or the remediation parameter and the polycyclic aromatic hydrocarbon removal rate; according to the corresponding relation between the soil parameters and / or the remediation parameters and the polycyclic aromatic hydrocarbon removal rate, predicting the polycyclic aromatic hydrocarbon removal rate under the known soil parameters and / or the remediation parameters; according to the method, accurate prediction of the polycyclic aromatic hydrocarbon removal rate of the soil can be realized, and a theoretical basis is provided for optimizing microwave remediation process parameters.

The present application relates to fluorescent material technical field, especially based on benzopentacyclic / septacyclic structure's carbonyl nitrogen type fluorescent material and its preparation method, the present application provides the preparation method with carbazole as raw material, in the synthesis process, the aldehyde group precursor is directly oxidized to acid by using strong oxidant, then the intermediate is made to occur intramolecular Friedel-Crafts reaction by acid catalyst, finally the carbonyl / nitrogen type fluorescent material of inlaid non-benzene structure is synthesized.This structure inhibits molecular relaxation through multiple resonance effect, and then realizes narrow band emission characteristics.At the same time, the structure retains higher photoluminescence quantum yield.The carbonyl nitrogen type fluorescent material based on benzopentacyclic / septacyclic structure provided by the present application is different from the existing all benzene type polycyclic aromatic hydrocarbons, so as to effectively widen the molecular system of carbonyl / nitrogen type narrow band light emitting material.

The invention belongs to the field of polluted soil remediation materials in agricultural environment technology, and particularly discloses a preparation method and application of a composite material for adsorbing and degrading polycyclic aromatic hydrocarbon in soil. The preparation method of the composite material comprises the following steps: co-pyrolyzing the oily sludge and the straws to generate pyrolytic carbon, and loading humic acid to obtain the composite material. The pyrolytic carbon humic acid composite material prepared by the invention is used for adsorbing and degrading polycyclic aromatic hydrocarbon in soil, compared with only pyrolytic carbon or humic acid, the composite material has a better degradation effect, the material preparation process is simple and efficient, the cost is low, and meanwhile, the purposes of improving soil and treating waste with waste are achieved.

The invention discloses a method for determining anthracene and phenanthrene oxides and polycyclic aromatic hydrocarbon pollutants in tea leaves, and belongs to the technical field of tea leaf component determination, by using the method, whether a tea leaf sample contains anthraquinone, phenanthrenequinone, multiple polycyclic aromatic hydrocarbons and other pollutants can be accurately determined at the same time, and quantitative analysis can be performed. The method has the characteristics of high detection efficiency, accurate analysis result and good repeatability; comprising the following steps: S1, respectively taking reference substances to prepare reference substance stock solutions with different numbers, taking a blank tea reference substance, and carrying out extraction, magnetic separation, extraction and elution to obtain a blank matrix extracting solution; s2, taking each reference substance stock solution, respectively preparing reference substance solutions with different numbers by using a blank matrix extracting solution, and sequentially putting the reference substance solutions into a gas chromatograph-tandem time-of-flight mass spectrometer for determination to obtain spectrum information of each reference substance; and S3, collecting data information of each reference substance from the map information of each reference substance, and then establishing a comparison database.

The invention discloses a method for simultaneously analyzing polychlorinated biphenyls, polycyclic aromatic hydrocarbons and organochlorine pesticides in water, which comprises the following steps: simultaneously extracting polychlorinated biphenyls, polycyclic aromatic hydrocarbons and organochlorine pesticides in a water sample by using a mixed solvent of n-hexane and dichloromethane, merging while extracting, purifying, concentrating and fixing volume, and testing on a machine in two groups, the polychlorinated biphenyl and the organochlorine pesticide are independently used as a group, the polycyclic aromatic hydrocarbon is used as a group, when an extraction solvent adopts a mixed solvent of dichloromethane and n-hexane, the extraction efficiency is gradually increased along with the increase of the proportion of the n-hexane, and when the volume ratio of the n-hexane to the dichloromethane is 9: 1, the extraction recovery rate can reach 78.9%-111%. When 1% of polyethylene glycol 4000 is added in the mixed extraction process with the volume ratio of n-hexane to dichloromethane being 9: 1, the extraction efficiency is remarkably improved, the extraction efficiency recovery rate reaches 84.6%-112%, and it is indicated that the addition of polyethylene glycol 4000 has the remarkable improvement effect. Compared with the prior art, the extraction efficiency is remarkably improved, and the accuracy and precision of the method completely meet the determination and analysis requirements for measuring complex water samples.

Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers includes a first host selected from indolocarbazole compounds, a second host selected from the compounds represented by the following general formula (2), and, as a light emitting dopant, a polycyclic aromatic compound represented by the following general formula (3) or a polycyclic aromatic compound represented by the general formula (3) as a substructure, wherein Y4 is B, P, P═O, P═S, Al, Ga, As, Si—R4 or Ge—R5, and X4 is O, N—Ar4, S or Se.

This application discloses a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring, its synthesis method, and its application, belonging to the field of organic synthesis. The synthesis method uses a haloacenaphthene derivative as a starting material. First, a tetrahalogenated key intermediate containing an eight-membered ring is constructed via a titanium tetrachloride-catalyzed cyclization tetramerization reaction. Subsequently, this intermediate undergoes a cyclization coupling reaction with an alkyne compound in the presence of a palladium catalyst, silver salt, and phosphine ligand to generate a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring. The synthesis method of this application avoids multi-step precursor synthesis, resulting in a concise process. It allows for the flexible introduction of functional groups such as trifluoromethyl and silyl groups, improving the solubility and processability of the material. The obtained product exhibits a non-planar configuration, a narrow optical band gap, and excellent electron transport properties, making it suitable for applications... n Applications include semiconductors, chiral optoelectronic materials, and nano-carbon materials.

The invention relates to the technical field of organic pollution treatment, in particular to a lignin grafted graphene oxide quantum dot material, a preparation method thereof and a polycyclic aromatic hydrocarbon degradation method, and the material is prepared by grafting reaction of alkaline lignin and graphene oxide quantum dots under alkaline conditions. When the strain is applied to degradation of polycyclic aromatic hydrocarbon, the strain and a Microbacterium sp.W1-2 strain with the preservation number of CGMCC (China General Microbiological Culture Collection Center) NO.35223 form a synergistic degradation system. The material can significantly promote thallus growth, enhance pollutant interface mass transfer and bioavailability, and realize efficient degradation in a dark environment without photocatalysis. Experiments show that under the condition that the initial concentration of benzo [a] pyrene is 5000g / L, by adding the material, the degradation rate within 6 hours can be increased to 651.4 g / h, which is increased by 2.9 times compared with that of a single strain; and the removal rate within 72 hours reaches 86.4%. The method has the advantages of being high in degradation efficiency, short in period, high in environmental adaptability, independent of illumination and the like, and is suitable for rapidly repairing the polycyclic aromatic hydrocarbon in the industrial wastewater.

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.

The objective is to provide a condensed polycyclic aromatic compound that serves as an organic photoelectric conversion material with excellent external quantum yield (EQE), dark current, and response speed when used as a photoelectric conversion element, as well as a material for a photoelectric conversion element, an organic thin film, and an organic photoelectric conversion element using the same. [Solution] The following formula (1) provides a condensed polycyclic aromatic compound. [Formula 1] TIFF2026071189000011.tif21170

The invention discloses a nano-droplet interface ionization mass spectrum ion source device and an operation method thereof, and relates to the field of nano-droplet interface ionization mass spectrum ion source devices, the device comprises a nano-spray needle used for loading a sample solution and realizing a nano-spray process; the metal electrode is inserted into the nano-spray needle, is in direct contact with the sample solution and is used for providing a high-voltage electric field required by nano-droplet interface ionization for the sample solution; and the ionization chamber is pre-filled with inert auxiliary gas and is used for protecting the interface ionization process of the nano liquid drops. High-sensitivity detection of polycyclic aromatic hydrocarbon in samples such as small-size single cells is realized, and higher signal intensity is obtained; better detection response to weak polar compounds (especially compounds with aromatic skeleton structures) in a mixed sample is realized; the detection of the weak polar compound polycyclic aromatic hydrocarbon in the single cell is realized.

The invention discloses application of a hierarchical pore nanoreactor catalyst in preparation of saturated cycloalkane, and belongs to the technical field of catalysts. The method comprises the following steps: uniformly dispersing ZIF-8 in a solvent, adding dopamine hydrochloride and amino acid, stirring at a certain temperature, and carrying out suction filtration and drying to obtain a dopamine-amino acid polymer modified ZIF-8 composite material; dispersing the composite material and a metal precursor in a solvent, uniformly stirring, and carrying out vacuum drying to remove the solvent; and carrying out segmented roasting in an inert atmosphere to obtain the required hierarchical pore nano-reactor catalyst. The catalyst is applied to preparation of saturated cycloalkanes by hydrogenation of polycyclic aromatic hydrocarbons, and specifically, a solvent, polycyclic aromatic hydrocarbons, the catalyst and hydrogen are mixed for a catalytic hydrogenation reaction. The hierarchical pore hollow structure of the catalyst can significantly promote diffusion and enrichment of polycyclic aromatic hydrocarbon molecules of different sizes, and rich pyridine nitrogen sites have strong adsorption and activation capabilities on polycyclic aromatic hydrocarbon and hydrogen molecules.

The application discloses a coal pyrolysis method and device for realizing in-situ ring-enriching modification of tar, and the method is as follows: block coal is pyrolyzed to obtain coal tar, semi-coke and pyrolysis gas; the coal tar and a ring-enriching modifier are subjected to in-situ ring-enriching modification reaction in a coal pyrolysis device under hydrogen to obtain coal tar; the in-situ ring-enriching modification reaction temperature is 200-250 DEG C, and the reaction pressure is 101-120 KPa.The coal tar obtained by the method is rich in polycyclic aromatic hydrocarbons and is suitable for being used as a processing raw material of high-density fuel.The device introduces the ring-enriching modification reaction on the basis of the coal pyrolysis, so that the coal tar is subjected to in-situ ring-enriching modification in the pyrolysis, and the obtained coal tar is more suitable for being used as the processing raw material of the high-density fuel.The pyrolysis device has the characteristics of low cost and low heat loss.

The present invention provides a method for detecting multiple polycyclic aromatic hydrocarbon metabolites in urine, belonging to the field of chemical detection technology. The method involves enzymatic hydrolysis, extraction, purification, nitrogen purging, and derivatization of urine to obtain a test solution, which is then subjected to gas chromatography-mass spectrometry. The detection employs an AEI source and multiple reaction monitoring mode, which increases the yield of ionized products and improves ionization efficiency. This method also enhances the intensity of the response signal, controls collision energy, reduces the detection limit, and improves detection sensitivity, making it more suitable for detecting samples with lower concentrations. It can accurately detect 16 polycyclic aromatic hydrocarbon metabolites simultaneously.