A kind of preparation method of sulfurized dehydrogenation catalyst
A dehydrogenation catalyst, catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems affecting the production efficiency and long time of production equipment
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example 1
[0021] Prepare an alumina support containing La and Sn. The 1.0M aluminum trichloride solution, 0.01M tin tetrachloride solution and 0.01M La(NO 3 ) 3 The solution is mixed, and the precipitation reaction is carried out with 10% ammonia water by weight concentration. The precipitation reaction temperature is 60~80℃, the pH value is controlled at 7.0~9.0, after filtration, water washing and acidification, the oil ammonia column is pressurized into balls, dried and aged And calcined at 650°C for 4 hours to obtain alumina pellets containing 0.5 wt% La and 0.4 wt% Sn. When preparing other alumina supports with different La and Sn contents, the amount of various raw materials can be adjusted appropriately.
[0022] The calcined carrier is immersed in an aqueous solution containing chloroplatinic acid at 70°C for 6 hours, dried at 120°C for 5 hours, then calcined at 500°C for 4 hours, and activated in air containing water vapor for 4 hours. And then at 70℃ with KNO 3 Immersed in the a...
example 2
[0026] Prepare an alumina support containing La and Sn. The 1.03M aluminum trichloride solution, 0.02M tin tetrachloride solution and 0.03M La(NO 3 ) 3 After the solution is mixed, add 11% by weight ammonia water, mix well in a neutralization tank at 60-80℃, control the pH value of 7.0-9.0, filter, wash, and acidify, pressurize the oil ammonia column into a ball, After drying, aging, and calcining at 750°C for 4 hours, alumina pellets containing 1.0 wt% La and 2.0 wt% Sn are obtained.
[0027] The calcined carrier is immersed in an aqueous solution containing chloroplatinic acid at 70°C for 6 hours, dried at 120°C for 5 hours, then calcined at 500°C for 4 hours, and activated in air containing water vapor for 4 hours. And then at 70℃ with KNO 3 And immersed in the aqueous solution for 2h, dried, roasted under the same conditions, and then immersed (NH 4 ) 2 The S solution was reduced in hydrogen at 500°C for 4 hours to obtain a catalyst. The loading amount of each component in t...
example 3
[0031] Prepare an alumina support containing La and Sn. The 0.96M aluminum trichloride solution, 0.01M tin tetrachloride solution and 0.02M La(NO 3 ) 3 After the solution is mixed, add 11% ammonia water with a weight concentration, mix it evenly in a neutralization tank at 60~80℃, control the pH value of 7.0~9.0, filter, wash and acidify, pressurize the oil ammonia column into a ball, pass After drying, aging, and calcining at 700°C for 4 hours, alumina pellets containing 1.5 wt% La and 1.0 wt% Sn are obtained.
[0032] The calcined carrier is immersed in an aqueous solution containing chloroplatinic acid at 70°C for 6 hours, dried at 120°C for 5 hours, then calcined at 500°C for 4 hours, and activated in air containing water vapor for 4 hours. And then at 70℃ with KNO 3 And immersed in the aqueous solution for 2h, dried, roasted under the same conditions, and then immersed (NH 4 ) 2 The S solution was reduced in hydrogen at 500°C for 4 hours to obtain a catalyst. The loading am...
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