Method for preparing coronene compound by using molecular sieve catalyst

[0053] Example 1: Synthesis of DNL-6 molecular sieve catalyst

[0054] The initial gel molar composition ratio: 2N-methylbutylamine (as an organic structure directing agent): 0.3SiO 2 : 0.4P 2 O 5 :0.5Al 2 O 3 :50H 2 O: 0.2 (20%) Cetyltrimethylammonium Bromide (as seed crystals) Mix metered organic structure directing agent, silica sol, phosphoric acid, aluminum isopropoxide, deionized water and seed crystals in a beaker , Fully stirred into a gel, and then put it into a stainless steel autoclave lined with polytetrafluoroethylene, and rotate and crystallize at a constant temperature of 200°C and a rotation speed of 75r/min for 24h. After crystallization, use a centrifuge at 3000 rpm/separation for 3 minutes. The separated solid product is washed with deionized water to neutrality, and dried overnight in the air at 120°C. The XRD analysis results are as follows figure 1 Shown. From figure 1 From the results, it can be seen that the synthesized product is the original DNL-6 molecular sieve powder, which is calcined at 550° C. for 5 hours to obtain DNL-6 molecular sieve, which is recorded as catalyst 1.

[0055] Example 2: Synthesis of SAPO-42 molecular sieve catalyst

[0056] With 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): 0.296SiO 2 :0.85P 2 O 5 : 1Al 2 O 3 :60H 2 O Mix the metered organic structure directing agent, silica sol, phosphoric acid, pseudo-boehmite and deionized water in a beaker, fully stir it into a gel, and then put it into a stainless steel autoclave lined with PTFE. Constant temperature crystallization at 175°C for 120h. After crystallization, use a centrifuge at 3000 rpm/separation for 3 minutes. The separated solid product is washed with deionized water to neutrality, and dried overnight in the air at 100°C. The XRD analysis results are as follows figure 2 Shown. From figure 2 It can be seen from the results that the synthesized product is SAPO-42 molecular sieve raw powder, which is calcined at 600°C for 5 hours to obtain SAPO-42 molecular sieve, which is recorded as catalyst 2.

[0057] Example 3: Synthesis of ZK-21 molecular sieve catalyst

[0058] 6.1g sodium aluminate (1.11Na 2 O·Al 2 O 3 ·3.5H 2 O) Mix with a small amount of deionized water, add 23g of 85% phosphoric acid to make 220ml of aqueous solution, add 10.3g of sodium metasilicate pentahydrate and 80ml of deionized water while stirring, the gel obtained after thorough stirring, then It was put into a stainless steel autoclave lined with polytetrafluoroethylene and crystallized at a constant temperature of 100°C for 69h. After crystallization, use a centrifuge at 3000 rpm/separation for 3 minutes. The separated solid product is washed with deionized water to neutrality, and dried overnight in the air at 100°C. The XRD analysis results are as follows image 3 Shown. From image 3 From the results, it can be seen that the synthesized product is the original ZK-21 molecular sieve powder, which is calcined at 600° C. for 5 hours to obtain ZK-21 molecular sieve, which is recorded as catalyst 3.