Preparation method for high activity hydrogenation treatment catalyst
A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of reduced catalyst activity, low drying temperature, and ineffective desorption Eliminate other problems, achieve the effect of improving performance, avoiding loss, and improving performance
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[0020] In the preparation process of the catalyst of the present invention, heat treatment of the catalyst precursor loaded with active metal components and organic compounds in an organic atmosphere can effectively remove the bound water brought about by the impregnation of active metal components and organic compounds, while avoiding the loading of organic compounds. The loss of the compound further improves the performance of the catalyst.
[0021] A kind of specific preparation process of high activity hydrotreating catalyst of the present invention comprises the following steps:
[0022] (1) prepare porous catalyst carrier;
[0023] (2) The carrier obtained in step (1) is loaded with an active metal component and an organic compound to obtain a catalyst precursor;
[0024] (3) heat-treating the catalyst precursor obtained in step (2) in the presence of a gaseous organic compound to obtain a catalyst.
[0025] The porous carrier described in step 1 is determined by those...
Embodiment 1
[0035] The catalyst is prepared using ethylene glycol.
[0036] Catalysts were prepared using gamma-alumina carrier ZT (1.2mm, clover) with the following properties:
[0037] Pore volume: 0.70mL / g
[0038] Specific surface area: 280m 2 / g
[0039] Bulk density: 0.58g / mL
[0040]Impregnate ZT with an equal volume of aqueous impregnation solution containing an appropriate amount of molybdenum trioxide, nickel carbonate, and phosphoric acid, dry the impregnated carrier at 200°C for 5 hours, and then add an appropriate amount of ethylene glycol in an aqueous solution (the mass concentration of ethylene glycol is 8%) ) equal-volume impregnation, and then dried at 120°C for 5 hours, and the dried strips were heat-treated at 350°C for 2 hours in an ethylene glycol atmosphere to prepare the catalyst. The prepared catalyst contains 12(wt)% molybdenum (calculated as oxide), 3.2(wt)% nickel (calculated as oxide) and 2(wt)% phosphorus (calculated as P 2 o 5 count). This catalyst ...
Embodiment 2
[0042] The catalyst is prepared using ethylene glycol.
[0043] Impregnate ZT with an equal volume of an aqueous solution containing an appropriate amount of ethylene glycol (the mass concentration of ethylene glycol is 8%), dry the impregnated carrier at 100°C for 4 hours, The impregnation solution was impregnated with equal volume, and then dried at 120°C for 5 hours, and the dried strip was heat-treated at 350°C for 2 hours in an ethylene glycol atmosphere to prepare the catalyst. The prepared catalyst contains 12(wt)% molybdenum (calculated as oxide), 3.2(wt)% nickel (calculated as oxide) and 2(wt)% phosphorus (calculated as P 2 o 5 count). This catalyst is designated as Cat2.
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