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85 results about "Acenaphthylene" patented technology

Acenaphthylene is a polycyclic aromatic hydrocarbon. The molecule resembles naphthalene with positions 1 and 8 connected by a C₂H₂ unit. It is a yellow solid. Unlike many polycyclic aromatic hydrocarbons, it has no fluorescence.

Solid phase extraction column based on graphene bonded silica gel, and preparation method and application thereof

The invention relates to a solid phase extraction column based on graphene bonded silica gel, which is used in concentration and separation of organic pollutants in an environmental water sample. A graphene bonded silica gel padding is prepared by taking 3-aminopropyl triethoxy silane (APTES) as the cross-linking agent; then graphene is bonded on the surface of silica gel; after product graphene bonded silica gel granules are evenly filled in a solid phase extraction column, the graphene bonded silica gel based solid phase extraction column is obtained. The performance indicators of the solid phase extraction column are tested through polycyclic aromatic hydrocarbons, including naphthalene, acenaphthylene, fluorene, phenanthrene, fluoranthene and pyrene, and the test result shows that the solid phase extraction column has good extraction efficiency, reproducibility and stability. The graphene bonded silica gel has the characteristics of big specific surface area, strong Pi electron adsorption ability and high extraction capacity of the graphene, and the stable mechanical property and good adsorption ability of the silica gel. Moreover, the solid phase extraction column based on the graphene bonded silica gel is low in preparation cost and simple to operate and is suitable to be used for pretreatment of low-concentration organic pollutants in a big-volume water sample. The solid phase extraction column has a good application prospect in the concentration and separation of environmental organic pollutants.
Owner:XINYANG NORMAL UNIVERSITY

Method for removing polycyclic aromatic hydrocarbons in soil by using persulfate-calcium peroxide through compound oxidation

The invention discloses a method for removing polycyclic aromatic hydrocarbons in soil by using persulfate-calcium peroxide through compound oxidation, and belongs to the field of soil repairing. The method comprises the following steps: after sieving to-be-measured air-dried soil, mixing the soil with calcium peroxide evenly; then adding distilled water to obtain slurry; successively adding oxalate ions, ferrous ions and peroxydisulfate ions, and stirring uniformly to obtain slurry reaction liquid; then leaving the slurry reaction liquid standstill in a dark place so that the polycyclic aromatic hydrocarbons in the soil can be removed after reaction is finished. By the method, naphthalene, acenaphthylene, acenaphthene, phenanthrene, anthracene, fluoranthene, pyrene, benzo[a]anthracene, a component as shown in the specification, benzo[b] fluoranthene, benzo[a]pyrene, dibenzo[a,b]anthracene, benzo[ghi] perylene and indeno[1,2,3-cd] pyrene in a complicated environment of the soil can be removed effectively, the removal rate of the polycyclic aromatic hydrocarbons is high, neutral pH of the soil can be maintained, acidized soil is improved, and a catalyst and a chelating agent are adopted, so that the removal effect and the removal efficiency are enhanced.
Owner:NANJING AGRICULTURAL UNIVERSITY

High-efficiency electron beam irradiation-resistant composite polypropylene material

The invention discloses a high-efficiency electron beam irradiation-resistant composite polypropylene material which is characterized by taking polypropylene resin as a base material and containing the following components in parts by weight: 0.05-0.3 part of irradiation screening agents and 100 parts of polypropylene resin, wherein the irradiation screening agents are compound mixtures of trans-1,2-diphenyl ethylene oxide and acenaphthylene, and the weight ratio of trans-1,2-diphenyl ethylene oxide to acenaphthylene is 1:(0.2-0.5). The high-efficiency electron beam irradiation-resistant composite polypropylene material disclosed by the invention has yellowing-resistant property, is capable of keeping the molecular transparency and ensuring that the transparency of the material can not be reduced, and can achieve the yellow index less than 1 by reducing the integrated mechanical property of the material within 5% and achieve the yellow index less than 1.3 by being naturally aged at normal temperature for 6 months. According to the prepared medical irradiation-resistant composite polypropylene material, the impact resistant property of a base material is enhanced before and after irradiation; and the physical property, chemical property and biological property can completely meet the requirements of an international YY/T0242-2007 'special material for polypropylene for medical transfusion, blood transfusion and syringes'.
Owner:上海新上化高分子材料有限公司

Device and method for extracting acenaphthene and acenaphthylene in LCO bicyclic aromatic hydrocarbon

ActiveCN109438164AEffective purityEffective yieldDistillation purification/separationHydrocarbonsAcenaphthyleneSolvent
The invention discloses a device and method for extracting acenaphthene and acenaphthylene in LCO bicyclic aromatic hydrocarbon. The device comprises an extraction rectifying tower, a regeneration tower, a crystallizing device, a washer and a sidestream rectifying tower. The method comprises the following steps: during preparation, firstly, adding a mixed liquid containing acenaphthene and acenaphthylene and an extractant from a raw material feed inlet and an extractant feed inlet of the extraction rectifying tower for extraction and rectification; feeding a fraction containing the extractantand dimethylnaphthalene into the regeneration tower for regeneration; recycling the regenerated extractant fraction to the extraction rectifying tower; feeding the fraction containing acenaphthene andacenaphthylene at the bottom of the extraction rectifying tower into the crystallizing device; adding a crystallizing solution for crystallization at the same time; feeding the obtained coarse acenaphthene into the washer; washing the coarse acenaphthene to obtain crystal acenaphthene; feeding the crystallizing mother liquor and washing agent mother liquor into the sidestream rectifying tower tobe rectified to obtain an acenaphthylene fraction; and recycling the crystallizing solvent to the crystallizing device and the washer. According to the device, the purity and the yield of acenaphtheneseparately reach 99.57% and 80.60% and the purity and the yield of acenaphthylene separately reach 98.53% and 77.59%.
Owner:NANJING NORMAL UNIVERSITY
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