Preparation method of hydrotreatment catalyst
A technology for hydrotreating and catalyst, which is used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of reduced catalyst activity and limited actual effect, etc., and achieves improved performance and performance. Effect
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[0019] In the preparation process of the catalyst of the present invention, heat treatment of the catalyst precursor loaded with the active metal component in an organic atmosphere can effectively remove the bound water brought about by the impregnation process of the active metal, and at the same time avoid the accumulation of the active metal, further improving the use of the catalyst performance.
[0020] A kind of concrete preparation process of catalyst of the present invention comprises the following steps:
[0021] (1) prepare porous catalyst carrier;
[0022] (2) impregnating the carrier obtained in step (1) to support the active metal component to obtain a catalyst precursor;
[0023] (3) heat-treating the catalyst precursor obtained in step (2) in the presence of gaseous organic matter to obtain a catalyst.
[0024] The porous carrier described in step 1 is determined by those skilled in the art based on common knowledge according to the needs of use. Generally pr...
Embodiment 1
[0031] The catalyst is prepared using ethylene glycol.
[0032] Catalysts were prepared using gamma-alumina carrier ZT (1.2mm, clover) with the following properties:
[0033] Pore volume: 0.70mL / g
[0034] Specific surface area: 310m 2 / g
[0035] Bulk density: 0.55g / mL
[0036] The gamma-alumina carrier was impregnated with an equal volume of aqueous impregnating solution containing an appropriate amount of molybdenum trioxide, nickel carbonate and phosphoric acid, and the impregnated carrier was dried at 200°C for 5 hours, and then the dry bar was heated at 350°C in ethylene glycol and nitrogen (nitrogen accounted for 80v%) heat treatment for 2 hours. 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 Cat1.
Embodiment 2
[0038] The catalyst is prepared using ethylene glycol.
[0039] The gamma-alumina carrier ZT is impregnated with an equal volume of aqueous impregnating solution containing an appropriate amount of molybdenum trioxide, nickel carbonate and phosphoric acid, and the impregnated carrier is dried at 200°C for 5 hours, and then the dried strip is heat-treated at 350°C in an ethylene glycol atmosphere 2 hours. 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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