Gasoline aromatization and isomerization reforming catalyst and preparation method and applications thereof
A catalyst and aromatization technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of cumbersome catalyst preparation steps and achieve good aromatization effects
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[0034] Example 1
[0035] ①Preparation of catalyst carrier
[0036] 1) Weigh 3.5kg nano ZSM-5 raw powder, 1.14kg pseudo-boehmite and 120g sesame powder, mix the three evenly, add 2300ml nitric acid solution with a mass concentration of 10%, and knead it in the extruder. forming. Place it at room temperature for 12 hours, then dry at 100°C for 12 hours and calcine at 540°C for 3 hours.
[0037] 2) Put 4 kg of the catalyst carrier prepared in the above step 1) in a 0.4mol / L ammonium nitrate solution at a solid-liquid volume ratio of 1:5, and place it at room temperature for 1 hour. After filtration, wash with deionized water until neutral. Repeat the above operation twice. Dry at 100°C for 12h, calcine at 540°C for 3h, and set aside.
[0038] 3) Put 4 kg of the catalyst carrier prepared in the above step 2) in a 0.6 mol / L nitric acid solution at a solid-liquid ratio of 1:5, and place it at room temperature for 24 hours. After filtering, wash with deionized water. After drying at 1...
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[0043] Example 2
[0044] ① Preparation of catalyst carrier: the same as in Example 1.
[0045] ②Preparation of catalyst
[0046] 1) Pack 20g of the above catalyst carrier A in the constant temperature section of the fixed bed, at 550℃, space velocity 1h -1 Treat with steam for 2h.
[0047] 2) The catalyst treated in step 1) was immersed in 15ml of solution containing 3.66g zinc nitrate and 0.62g lanthanum nitrate, immersed at room temperature for 24h, filtered, dried at 100°C for 12h, and calcined at 540 for 4h to prepare supported zinc oxide and Lanthanum oxide catalyst.
[0048] 3) The catalyst prepared in step 2) was then immersed in 15 ml of a solution containing 1.48 g of ammonium dihydrogen phosphate, immersed at room temperature for 12 hours, filtered, dried at 100°C for 12 hours, and calcined at 540 for 4 hours to obtain product catalyst E.
Example Embodiment
[0049] Example 3
[0050] ① Preparation of catalyst carrier: the same as in Example 1.
[0051] ②Preparation of catalyst
[0052] 1) Pack 10g of the above catalyst carrier A in the constant temperature section of the fixed bed, at 500℃, space velocity 0.5h -1 Treat with steam for 3h.
[0053] 2) The catalyst treated in step 1) above was immersed in 8ml of solution containing 0.92g zinc nitrate and 0.27g lanthanum nitrate, immersed at room temperature for 24h, filtered, dried at 100°C for 12h, and calcined at 540 for 4h to prepare supported zinc oxide and Lanthanum oxide catalyst.
[0054] 3) The catalyst prepared in step 2) is then immersed in 8 ml of a solution containing 0.74 g of ammonium dihydrogen phosphate, immersed at room temperature for 24 hours, filtered, dried at 100°C for 12 hours, and calcined at 540 for 4 hours to obtain product catalyst F.
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