Hydrotreating catalyst impregnation solution and preparation method thereof
A technology of impregnation solution and hydrogenation treatment, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems that the initial active metal content is too high and difficult to achieve, and achieve moderate force , stable properties, large specific surface area and large pore volume
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Embodiment 1
[0025] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 4 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 3.0g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 1 . The pH of the solution was measured to be 4.07.
Embodiment 2
[0027] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 5 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 5.1g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 2 . The pH of the solution was measured to be 5.10.
Embodiment 3
[0029] This example introduces the method of adding ammonium carbonate to adjust the pH of the solution to about 6 during the preparation of the Mo-Ni-P impregnating solution. Get 9.3g phosphoric acid (mass concentration 85.0%) and 150ml water and mix and add there-necked flask, add molybdenum trioxide (industrial grade) 105.1g and basic nickel carbonate (in terms of Ni, 44.0% by weight) 29.4g in stirring, be warming up to 40~50℃, react for 0.5h, slowly add 8.0g of ammonium carbonate (as NH 3 40.0% by weight), heated up to 90-100°C, reacted for 1h, stopped heating, cooled to room temperature, filtered the resulting solution, and settled the volume to 250ml to obtain dark green clear and transparent solution A 3 . The pH of the solution was measured to be 6.02.
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