Method for preparing loaded hydrofining catalyst
A hydrorefining, supported technology, applied in molecular sieve catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of uneven distribution of metal active components and accumulation of active components. Reduce and affect catalyst activity and other problems, to achieve the effects of cheap raw materials, weakening interactions, and improving dispersion
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Embodiment 1
[0026] Take 12.5mL concentration of 30wt% H 2 o 2 solution, added dropwise to 9.92g (containing WO 3 90.0wt%) in ammonium metatungstate, after stirring evenly, the impregnating solution is obtained;
[0027] Add the impregnating solution dropwise to 24.2g of alumina carrier, impregnate at room temperature for 6 hours, then dry at 110°C for 2 hours, and calcined at 480°C for 4 hours to obtain W / Al 2 o 3 Catalyst C1, the content of tungsten oxide determined by X-ray fluorescence spectrometry is 26.8wt%.
Embodiment 2
[0029] Take 12.5mL concentration of 30wt% H 2 o 2 solution, added dropwise to 9.92g (containing WO 3 90.0wt%) in ammonium metatungstate, after stirring evenly, to obtain the impregnation solution, then add 0.6g citric acid and mix uniformly;
[0030] Add the impregnating solution dropwise to 24.2g of alumina carrier, impregnate at room temperature for 6 hours, then dry at 110°C for 2 hours, and calcined at 480°C for 4 hours to obtain W / Al 2 o 3 Catalyst C2 has a tungsten oxide content of 26.8wt% as determined by X-ray fluorescence spectrometry.
Embodiment 3
[0032] Take 12.5mL concentration of 30wt% H 2 o 2 solution, added dropwise to 9.92g (containing WO 3 90.0wt%) in ammonium metatungstate, after stirring evenly, to obtain the impregnation solution, then add 0.5g tartaric acid and mix uniformly;
[0033]Add the impregnating solution dropwise to 24.2g of alumina carrier, impregnate at room temperature for 6 hours, then dry at 110°C for 2 hours, and calcined at 480°C for 4 hours to obtain W / Al 2 o 3 Catalyst C3 has a tungsten oxide content of 26.8wt% as determined by X-ray fluorescence spectrometry.
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