A kind of method of ethanol dehydration preparation ethylene
An ethanol dehydration and ethylene technology, which is applied in chemical instruments and methods, hydrocarbon production from oxygen-containing organic compounds, catalysts for physical/chemical processes, etc., can solve the problems of poor stability and short service life of catalysts, and improve catalytic activity. and stability, uniform acid distribution, moderate acidity effect
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Embodiment 1
[0023] Fully mix commercially available H-NaZSM-5 molecular sieves with deionized water to prepare slurry I; mix sodium metaaluminate, phosphoric acid, 40% silica sol, and distilled water according to n(Al):n(P):n(Si) : n(H 2 O) the molar ratio is 1:1:0.1:40 mixing, stirring for 20 minutes, to obtain gel II; slurry I is added in gel II, stirring for 30 minutes, according to the molar ratio n (template agent): n (P) is 2:1 Add the template agent isopropylamine, continue to stir until a uniform gel is formed, put the gel into the reaction kettle, and crystallize at 170°C for 1 day. The crystallized product was quenched, filtered, and washed with water until the pH value was 8, dried at 120°C for 12 hours, and roasted in a muffle furnace at 550°C to remove the template agent to obtain Synthetic Catalyst A, which was characterized by SEM with an average grain size of 5 microns .
[0024] The performance evaluation of the catalyst was carried out on a fixed-bed reaction device at...
Embodiment 2
[0026] Fully mix commercially available H-NaZSM-5 molecular sieves with deionized water to obtain slurry I; divide pseudo-boehmite, phosphoric acid, water glass, and distilled water into n(Al): n (P): n(Si): n(H 2 O) the molar ratio is 1:1:0.1:40 mixing, stirring for 20 minutes, to obtain gel II; slurry I is added in gel II, stirring for 30 minutes, according to the molar ratio n (template agent): n (P) is 2:1 Add the template agent isopropylamine, continue to stir until a uniform gel is formed, put the gel into the reaction kettle, and crystallize at 170°C for 1 day. The crystallized product was quenched, filtered, and washed with water until the pH value was 8, dried at 120°C for 12 hours, and roasted in a muffle furnace at 550°C to remove the template agent to obtain Synthetic Catalyst B, which was characterized by SEM with an average grain size of 8 microns .
[0027] The performance evaluation of the catalyst was carried out on a fixed-bed reaction device at normal pres...
Embodiment 3
[0029] Fully mix commercially available H-NaZSM-5 molecular sieves with deionized water to prepare slurry I; mix sodium metaaluminate, phosphoric acid, 40% silica sol, and distilled water according to n(Al):n(P):n(Si) : n(H 2 O) the molar ratio is 1:1:0.1:40 mixing, stirring for 20 minutes, to obtain gel II; slurry I is added in gel II, stirring for 30 minutes, according to the molar ratio n (template agent): n (P) is 2:1 Add the template agent triethylamine, continue to stir until a uniform gel is formed, put the gel into the reaction kettle, and crystallize at 170°C for 1 day. The crystallized product was quenched, filtered, and washed with water until the pH value was 8, dried at 120°C for 12 hours, and roasted in a muffle furnace at 550°C to remove the template agent to obtain Synthetic Catalyst C, which was characterized by SEM with an average grain size of 7 microns .
[0030] The performance evaluation of the catalyst was carried out on a fixed-bed reaction device at ...
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