Regeneration method of deactivated catalyst
A technology for deactivated catalysts and catalysts, which is applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc. It can solve the problems that the regeneration methods of deactivated catalysts need to be improved, so as to improve production civilization and regeneration High efficiency and improved production safety
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Embodiment 1
[0029] refer to figure 1 , utilize the regeneration method of deactivated catalyst of the present invention to prepare regenerated catalyst, concrete steps are as follows:
[0030]Take 1.1g of deactivated organophosphorus-zerovalent nickel catalyst in a muffle furnace, raise the temperature of the muffle furnace to 100°C, maintain it for 2h, then raise the temperature to 350°C, and perform high-temperature calcination for 5h to obtain nickel oxide; at room temperature , the resulting nickel oxide was reacted with 30% hydrochloric acid to obtain a nickel salt solution; the nickel salt solution was placed in an oven at 200°C for 1h to obtain 1.6g of solid nickel salt; 1.0g of solid nickel salt was added to 8.8 g triphenyl phosphite, under the reduction action of 0.01g Zn powder, prepare catalyst, the quality that obtains catalyst is 6.10g.
[0031] The calculated yield of the regenerated catalyst was 98%.
Embodiment 2
[0033] refer to figure 1 , utilize the regeneration method of deactivated catalyst of the present invention to prepare regenerated catalyst, concrete steps are as follows:
[0034] Take 3.0g of deactivated organophosphorus-zerovalent nickel catalyst in a muffle furnace, raise the temperature of the muffle furnace to 120°C, maintain it for 1h, then raise the temperature to 400°C, and perform high-temperature calcination for 4h to obtain nickel oxide; at 30°C In order to obtain a nickel salt solution, the nickel oxide obtained was reacted with 5% nitric acid; the nickel salt solution was placed in an oven at 180° C. for 2 hours to obtain 4.5 g of solid nickel salt; 1.0 g of solid nickel salt was added to 9.5 g of tri-m-cresyl phosphite were reduced by 0.01 g of Zn powder to prepare a catalyst, and the quality of the obtained catalyst was 4.62 g.
[0035] The calculated yield of the regenerated catalyst was 95%.
Embodiment 3
[0037] refer to figure 1 , utilize the regeneration method of deactivated catalyst of the present invention to prepare regenerated catalyst, concrete steps are as follows:
[0038] Take 4.5g of deactivated organic phosphorus-zero-valent nickel catalyst in a muffle furnace, and raise the temperature of the muffle furnace to 80°C for 3h, then raise the temperature to 500°C, and perform high-temperature calcination for 3h to obtain nickel oxide; at 80°C In order to obtain a nickel salt solution, the obtained nickel oxide was reacted with 20% sulfuric acid; the nickel salt solution was placed in an oven at 150° C. for 3 hours to obtain 7.3 g of solid nickel salt; 1.0 g of solid nickel salt was added to 8.8 g of tri-p-cresyl phosphite were reduced by 0.01 g of Zn powder to prepare a catalyst, and the mass of the obtained catalyst was 5.38 g.
[0039] The calculated yield of the regenerated catalyst was 96%.
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