Regeneration method of deactivated titanium-silicon molecular sieve
A technology of titanium-silicon molecular sieves and species, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, catalyst regeneration/reactivation, etc., can solve problems such as environmental protection and economic constraints, high material consumption and energy consumption, and cumbersome and complicated operation processes, and achieve Effects of relative crystallinity recovery, pollution reduction, and activity improvement
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Embodiment 1
[0033] Take 10g of the above-mentioned inactivated molecular sieve SH-1, mix it with 65g of filtered waste liquid (from Comparative Example 1, the same below), and then put the mixture into a sealed autoclave with a polytetrafluoroethylene liner and react at 180°C for 12h. After the obtained molecular sieve was filtered and washed, it was dried at 150° C. for 120 minutes, and then calcined at 650° C. for 4 hours to obtain regenerated TS-1 molecular sieve A.
Embodiment 2
[0035] Take 12g of BS-1 obtained by roasting and regenerating inactivated TS-1 molecular sieve, mix it with 45g of filtered waste liquid, and then put the mixture into a sealed autoclave with a polytetrafluoroethylene liner and react at 145°C for 54h. After the obtained molecular sieve was filtered and washed, it was dried at 100° C. for 270 minutes, and then calcined at 570° C. for 8 hours to obtain the regenerated TS-1 molecular sieve B.
Embodiment 3
[0037] Take 12g of BS-2 obtained by roasting and regenerating inactivated TS-1 molecular sieve, mix it with 155g of filtered waste liquid, and then put the mixture into a sealed autoclave with Teflon lining and react at 150°C for 24h. After the obtained molecular sieve was filtered and washed, it was dried at 160° C. for 120 minutes, and then calcined at 700° C. for 2 hours to obtain the regenerated TS-1 molecular sieve C.
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