Preparation method of hydrocracking catalyst
A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as high reaction temperature, low activity, poor raw material adaptability, etc.
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Embodiment 1
[0032] The carrier T-1 of Comparative Example 1 was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 2 hours, and dried at 120°C for 4 hours to prepare dimethylhydrazine NH with a concentration of 30% by weight. 2 N(CH 3 ) 2 Solution, the above-mentioned dried material is impregnated with the prepared solution for 2 hours, dried at 100°C for 4 hours, heat-treated at 250°C for 6 hours in an air atmosphere, and then reduced and activated under a hydrogen atmosphere. The reduction and activation procedure is as follows: Raise from room temperature to 450°C at 5°C / min, from 450°C to 500°C at a heating rate of 2°C / min, and keep at 500°C for 2 hours to prepare catalyst C-1 of the present invention.
Embodiment 2
[0037] The carrier T-2 of Comparative Example 2 was impregnated with an impregnation solution containing tungsten compound and nickel compound for 2 hours at room temperature, and dried at 100°C for 6 hours to prepare dimethylhydrazine NH with a weight concentration of 40%. 2 N(CH 3 ) 2 solution, the above-mentioned dried carrier was impregnated with the prepared solution for 2 hours, dried at 100°C for 5 hours, heat-treated at 400°C for 1 hour in an air atmosphere, and then activated with hydrogen in a hydrogen atmosphere. °C / min was raised from room temperature to 350 °C, at a rate of 1 °C / min, from 350 °C to 500 °C, and kept at 500 °C for 4 hours to prepare transition metal phosphide catalyst C-2.
Embodiment 3
[0042] The carrier T-3 of Comparative Example 3 was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 2 hours, and dried at 110°C for 6 hours to prepare dimethylhydrazine NH with a weight concentration of 60%. 2 N(CH 3 ) 2 solution, the above-mentioned dried carrier was impregnated with the prepared solution for 2 hours, dried at 110°C for 5 hours, heat-treated at 350°C for 2 hours in an air atmosphere, and then activated under a hydrogen atmosphere. °C / min was raised from room temperature to 450 °C, at a rate of 1 °C / min, from 450 °C to 500 °C, and kept at 500 °C for 4 hours to prepare transition metal phosphide catalyst C-3.
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Abstract
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