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A method for preparing coronene compounds from acyclic olefins

A non-cyclic, compound technology, applied in the direction of hydrocarbons, hydrocarbons, carbon compound catalysts, etc., can solve the problems of unstable intermediate products and inconvenient industrialization.

Active Publication Date: 2021-07-06
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method overcomes the disadvantage of expensive raw material perylene, the process involves multiple anhydrous, oxygen-free and low-temperature operations, and the intermediate product is extremely unstable, which brings inconvenience to industrialization

Method used

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  • A method for preparing coronene compounds from acyclic olefins
  • A method for preparing coronene compounds from acyclic olefins
  • A method for preparing coronene compounds from acyclic olefins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: the synthesis of RHO molecular sieve catalyst

[0053] Initial gel molar composition ratio 2N-methylbutylamine (as organic structure directing agent): 3Na 2 O: 0.4Cs 2 O: Al 2 o 3 : 10SiO 2 : 110H 2 O Mix the measured sodium oxide, cesium oxide, pseudoboehmite, silica sol and deionized water in a beaker, stir well to form a gel, then put it into a stainless steel autoclave lined with polytetrafluoroethylene, and 100 ℃ constant temperature 50h. After crystallization, use a centrifuge at 3000 rpm for 3 minutes, wash the separated solid product with deionized water to neutrality, and dry it overnight in air at 120°C. The results of XRD analysis are as follows: figure 1 shown. from figure 1 It can be seen from the results that the synthesized product is the raw powder of RHO molecular sieve, which is calcined at 550°C for 5 hours to obtain RHO molecular sieve, which is designated as catalyst 1.

Embodiment 2

[0054] Embodiment 2: the synthesis of ITQ-29 molecular sieve catalyst

[0055] Based on the initial gel molar composition ratio of 1.85 2,2-dimethyl-2,3-dihydro-1H-phenyl[de]isoquinoline (as an organic structure-directing agent): 0.2SiO 2 : 0.8GeO 2 : 0.06Al 2 o 3 : 0.25 4-Methyl-2,3,6,7-tetrahydro-1H, 5H-pyridine[3,2,1-ij]quinoline: 0.25 Tetramethylamine: 0.5HF: 6H 2 O Mix measured amounts of silica sol, germanium dioxide, aluminum isopropoxide, organic structure-directing agent, hydrofluoric acid and deionized water in a beaker, stir well to form a gel, and then put it into a polytetrafluoroethylene-lined In a stainless steel autoclave, crystallize at a constant temperature of 135°C for 6 days. After crystallization, use a centrifuge at 3000 rpm for 3 minutes, wash the separated solid product with deionized water until it is neutral, and dry it overnight in air at 100°C. The results of XRD analysis are as follows: figure 2 shown. from figure 2 It can be seen from th...

Embodiment 3

[0056] Embodiment 3: the synthesis of UZM-9 molecular sieve catalyst

[0057] In the initial gel molar composition ratio 9 tetraethylammonium hydroxide: 2 tetramethylammonium hydroxide: 0Na 2 O: Al 2 o 3 : 16SiO 2 : 62H 2 O mix metered tetraethylammonium hydroxide, tetramethylammonium hydroxide (organic structure-directing agent), aluminum isopropoxide, silica sol and deionized water in a beaker, fully stir to form a gel, then pack into Crystallize at room temperature for 6 hours in a stainless steel autoclave lined with polytetrafluoroethylene. After crystallization, use a centrifuge at 3000 rpm for 3 minutes, wash the separated solid product with deionized water until it is neutral, and dry it overnight in air at 100°C. The results of XRD analysis are as follows: image 3 shown. from image 3 It can be seen from the results that the synthesized product is the original powder of UZM-9 molecular sieve, which is calcined at 600°C for 5 hours to obtain UZM-9 molecular sie...

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Abstract

A method for preparing coronene compounds from acyclic olefins, characterized in that the method comprises: loading the reaction raw materials into a reactor, contacting and reacting with a catalyst comprising activated silica-alumina molecular sieves to obtain the coronets Benzene compounds; wherein, the reaction raw materials include acyclic olefins. The method has mild preparation conditions, easy operation and simple process; the raw materials used are low in cost and easy to obtain, and are suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of organic chemistry, and more specifically relates to a method for preparing coronene compounds from acyclic olefins. Background technique [0002] As an important fluorescent material, the research of coronene and its derivatives has always attracted people's attention. Especially in recent years, it has been found that coronene and its derivatives are excellent organic fluorescent materials for making ultraviolet charge-coupled devices (UV-CCD). The maximum absorption wavelength of coronene is 255nm, the maximum emission wavelength is 520nm, and it has a large quantum efficiency. Therefore, coronene is a very ideal UV-CCD material. Research on the application of coronene to radar is ongoing. However, because the synthesis of coronene and its derivatives is very difficult, this seriously perplexes people's further research on it. [0003] At present, the preparation methods of coronene mainly include three kinds...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C2/42C07C15/20
CPCC07C2/42C07C2529/40C07C2529/70C07C15/20
Inventor 王男郅玉春魏迎旭刘中民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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