Preparation method of alcohol aromatization catalyst
An aromatization and catalyst technology, which is applied in the field of alcohol aromatization catalyst preparation, can solve the problems of poor aromatization catalyst activity and stability, and achieves excellent reaction stability, good technical effect, and inhibition of carbon deposition. Effect
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[0026] Example 1: Preparation of ZnO modified ZSM-5 catalyst by atomic layer deposition method:
[0027] 1) Take 10gZSM-5, 0.30mol / L NaHCO 3 800mL of the solution was fully stirred and mixed, then placed in a water bath at 80°C and heated for 8 hours; then filtered and washed. The washed molecular sieve was exchanged 3 times with 0.8mol / L ammonium nitrate solution in a 75℃ water solution, each exchange was 12h. After the exchange, the solution was filtered, washed, dried at 120°C for 10 hours, and calcined at 550°C for 5 hours to obtain a solid powder.
[0028] 2) Place the solid powder obtained in step 1) in the flow chamber of the ALD reaction, and pass diethylzinc and water in the flow chamber in a pulse alternating manner at 180°C, while purging with high-purity nitrogen. Its single-cycle reaction time is (15ms-20s-15s-15ms-20s-15s). Among them, 15ms is the pulse time, 20s is the waiting time that is the exposure time of the source in the reaction chamber, and 15s is the clea...
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[0029] Example 2:
[0030] The preparation steps and methods are the same as in Example 1, except that the 0.30mol / L NaHCO in step 1) of Example 1 3 The solution was changed to a 0.15mol / L HCl solution.
Example Embodiment
[0031] Example 3:
[0032] The preparation steps and methods are the same as in Example 1, except that the 0.30mol / L NaHCO in step 1) of Example 1 3 The solution was changed to 0.50mol / L gluconic acid solution, and the 0.8mol / L ammonium nitrate solution was changed to 1.0mol / L ammonium chloride solution.
[0033] Example 4:
[0034] The preparation steps and methods are the same as in Example 1, except that the number of cyclic reactions in step 2) of Example 1 is increased to 200.
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