Preparation method of high-HDS-activity Ni-based non-loading type catalyst
A catalyst, non-supported technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem that the active sites cannot be fully exposed, the dispersion is not good, and the active components of non-supported catalysts are too large Intensive and other issues
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Embodiment 1
[0019] Weigh 11.632 g of nickel nitrate hexahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate. Pour 5.071 g of ammonium heptamolybdate and 3.531 g of ammonium metatungstate into a three-necked flask with a capacity of 500 ml, and dissolve them completely with 300 ml of deionized water at 50 °C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90 °C in a water bath. Pour nickel nitrate hexahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. Slowly drop solution B into solution A at the same temperature, and it can be seen that a precipitate is gradually formed. After the dropwise addition was completed, nonionic surfactant Tween 60 was added at one time, and its addition amount was 10% of the total mass of the metal compound raw material, i.e. 2.02 g. Afterwards, the solution was stirred at 90 °C for 5 h to fully compound the a...
Embodiment 2
[0021] Weigh 11.632 g of nickel nitrate hexahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate. Pour 5.071 g of ammonium heptamolybdate and 3.531 g of ammonium metatungstate into a three-necked flask with a capacity of 500 ml, and dissolve them completely with 300 ml of deionized water at 50 °C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90 °C in a water bath. Pour nickel nitrate hexahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. At the same temperature, slowly change solution B and drop it into solution A, and it can be seen that a precipitate is gradually formed. After the dropwise addition was completed, nonionic surfactant Tween 60 was added at one time, and its addition amount was 20% of the total mass of the metal compound raw material, i.e. 4.04 g. Afterwards, the solution was stirred at 90 °C for 5 h to fully...
Embodiment 3
[0023]Weigh 11.632 g of nickel nitrate hexahydrate, 5.071 g of ammonium heptamolybdate, and 3.531 g of ammonium metatungstate. Pour 5.071 g of ammonium heptamolybdate and 3.531 g of ammonium metatungstate into a three-necked flask with a capacity of 500 ml, and dissolve them completely with 300 ml of deionized water at 50 °C to obtain solution A. Use ammonia water as the precipitant to adjust the pH of solution A to 9, and heat the temperature of solution A to 90 °C in a water bath. Pour nickel nitrate hexahydrate into a beaker and dissolve in 20 ml deionized water to obtain solution B. At the same temperature, slowly change solution B and drop it into solution A, and it can be seen that a precipitate is gradually formed. After the dropwise addition was completed, nonionic surfactant Tween 60 was added at one time, and its addition amount was 40% of the total mass of the metal compound raw material, i.e. 6.06 g. Afterwards, the solution was stirred at 90 °C for 5 h to fully ...
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