Reformate olefin-removal catalyst preparation method by ammonium fluoride modification
An ammonium fluoride and oil olefin technology, which is applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of the inability of active components to fully play their role, the low initial activity and lifespan, and the complex preparation methods. , to achieve the effect of low equipment investment and operating costs, improved safety factors, and simple preparation process
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Embodiment 1
[0030] Take 2g of attapulgite clay and 12g of β molecular sieve, put them together into a flask, add 112ml of ammonium fluoride solution with a concentration of 0.1mol / L into the flask, heat and stir, the heating temperature is 80°C, and the stirring time is 1h. After the end, filter and wash until there is no irritating smell, and then dry it.
[0031] Take the dried mixture, add 6g of alumina monohydrate to it, then add 0.2 of scallop powder, and mix it evenly with dilute nitric acid. dry. Finally, it was activated at 200°C for 1h. Denoted as catalyst A.
Embodiment 2
[0033] Take 2g of acidified attapulgite clay and 12g of β molecular sieve after one exchange, put them into the flask together, add 112ml of ammonium fluoride solution with a concentration of 0.1mol / L in the flask, heat and stir, the heating temperature is 80°C, Stirring time 1h. After the end, filter and wash until there is no irritating smell, and then dry it.
[0034] Take the dried mixture, add 6g of alumina monohydrate to it, then add 0.2 of scallop powder, and mix it evenly with dilute nitric acid. dry. Finally, it was activated at 200°C for 1h. Denoted as Catalyst B.
Embodiment 3
[0036] Take 6g of kaolin and 10g of Y molecular sieve, put them together into a flask, add 128ml of ammonium fluoride solution with a concentration of 0.5mol / L into the flask, heat and stir, the heating temperature is 90°C, and the stirring time is 2h. After the end, filter and wash until there is no irritating smell, and then dry it.
[0037] Take the dried mixture, add 4g of pseudo-boehmite to it, then add 0.4 of scallop powder, and mix evenly with dilute nitric acid. ℃ dry. Finally, it was activated at 150°C for 2h. Denoted as catalyst C.
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