Regeneration method of ethylbenzene catalyst
An ethylbenzene catalyst and catalyst technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low recycling rate and poor regeneration effect of deactivated ethylbenzene catalysts, and achieve The effects of improved ethylation selectivity, excellent catalytic performance, and improved ethylene conversion
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Embodiment 1
[0026] After unloading the deactivated ethylbenzene catalyst in the reactor, treat it with 1.5wt% tetrabutylammonium hydroxide solution for 5 hours, wherein the solid-to-liquid ratio of the deactivated catalyst and tetrabutylammonium hydroxide solution is 15:1, the treatment temperature Then the catalyst was dried at 145°C for 4 hours under a nitrogen atmosphere; finally, the catalyst was calcined at a high temperature of 550°C for 5 hours under an air atmosphere to obtain the regenerated ethylbenzene catalyst A.
Embodiment 2
[0028] After the deactivated ethylbenzene catalyst in the reactor was unloaded, it was treated with 6.0wt% tetrapropyl ammonium hydroxide solution for 8 hours, wherein the solid-to-liquid ratio of the deactivated catalyst and tetrapropyl ammonium hydroxide solution was 20: 1. The treatment temperature is 70°C; then the catalyst is dried at 140°C for 2 hours in a nitrogen atmosphere; finally, the catalyst is calcined at a high temperature of 600°C for 6 hours in an air atmosphere to obtain the regenerated ethylbenzene catalyst B.
Embodiment 3
[0030] After unloading the deactivated ethylbenzene catalyst in the reactor, treat it with a 3.5wt% triethylamine solution for 5 hours, wherein the solid-to-liquid ratio of the deactivated catalyst and the triethylamine solution is 25:1, and the treatment temperature is 70 °C; then the catalyst was dried at 160 °C for 6 hours under a nitrogen atmosphere; finally, the catalyst was calcined at a high temperature of 500 °C for 2 hours under an air atmosphere to obtain the regenerated ethylbenzene catalyst C.
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