Aromatization catalyst and preparation method thereof
A catalyst and aromatization technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of high dry gas yield and low yield of aromatics, and achieve low dry gas yield, Effect of high yield of aromatics and high yield of propylene
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[0023] Example 1
[0024] Catalyst C of the present invention 1 The preparation method is as follows:
[0025] (1) Modification treatment of ZSM-5 molecular sieve
[0026] Take 100 grams of SiO 2 / Al 2 O 3 HZSM-5 molecular sieve with a molecular molar ratio of 65 was first impregnated with 100 ml of phosphoric acid solution with a concentration of 6.32 mg / ml for 8 hours, dried at 110 °C for 4 hours, calcined at 550 °C for 4 hours, and then used 100 ml of LaCl with a concentration of 3.04 mg / ml 3 .6H 2 P-La-ZSM-5 was prepared by soaking in O solution for 8h, drying at 110℃ for 4h, and calcining at 550℃ for 4h.
[0027] (2) Modification treatment of MCM-22 molecular sieve
[0028] Take 100 grams of SiO 2 / Al 2 O 3 Molecular molar ratio of 30 HMCM-22 molecular sieve, with 100 ml concentration of 11 mg / ml Zn(NO 3 ).6H 2Zn-MCM-22 was prepared by soaking in O solution for 8h, drying at 110℃ for 4h, and calcining at 550℃ for 4h.
[0029] (3) Catalyst preparation
[00...
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[0031] Example 2
[0032] Catalyst C of the present invention 2 The preparation method is as follows:
[0033] The catalyst preparation method is the same as that in Example 1, except that the ratio of P-La-ZSM-5:Zn-MCM-22 in the catalyst carrier is 75:25, the composition is shown in Table 2, and the evaluation results are shown in Table 3.
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[0034] Example 3
[0035] Catalyst C of the present invention 3 The preparation method is as follows:
[0036] The catalyst preparation method is the same as that in Example 1, except that the ratio of P-La-ZSM-5:Zn-MCM-22 in the catalyst carrier is 60:40, the composition is shown in Table 2, and the evaluation results are shown in Table 3.
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