Method for preparing acraldehyde catalyst by glycerol dehydration
A dehydration catalyst and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of catalyst activity decline, glycerin conversion rate decline, etc., and achieve simple reaction process and high stability , Catalyst activity shows good effect
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Embodiment 1
[0026] Using NiO / ZrP with a Ni content of 0.5% (wt) as the catalyst, a 10% mass fraction of glycerol aqueous solution as the raw material in a fixed-bed tubular reactor, nitrogen as the carrier gas, and a volumetric space velocity controlled at 80h -1 , the reaction temperature is 280°C, under this condition for 12 hours, the average conversion rate of glycerol is 77%, and the average selectivity of acrolein is 66%.
Embodiment 2
[0028] Using NiO / ZrP with a Ni content of 5% (wt) as the catalyst, a 50% mass fraction of glycerol aqueous solution as the raw material in a fixed-bed tubular reactor, nitrogen as the carrier gas, and a volumetric space velocity controlled at 40h -1 , the reaction temperature is 250°C, under this condition for 12 hours, the average conversion rate of glycerol is 84%, and the average selectivity of acrolein is 67%.
Embodiment 3
[0030] Fe with a Fe content of 10% (wt) 2 o 3 / ZrP is the catalyst, and the glycerin aqueous solution with 30% mass fraction is used as the raw material on the fixed-bed tubular reactor, nitrogen is used as the carrier gas, and the volume space velocity is controlled at 80h -1 , the reaction temperature is 300 ℃, under this condition for 6 h, the average conversion rate of glycerol is 89%, and the average selectivity of acrolein is 67%.
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