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. It can reduce the problem of reducing the size of the active component particles, and achieve the effect of cheap raw materials, weakening the interaction, and improving the dispersion.

Active Publication Date: 2015-01-07
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, in general, the catalysts obtained by the impregnation method have the following problems: the metal active components are not evenly distributed on the surface of the carrier, the active component particles are large, and the dispersion is low, which affects the activity of the catalyst
The equilibrium adsorption method uses the reaction between the precursor of the active component and the hydroxyl group on the surface of the carrier to load the active component on the carrier, so that the active component can form smaller crystal grains and have good contact with the surface of the carrier, and the distribution is uniform. Improve dispersion ((N.Spanos et al., Journal of Catalysis, 1990, 124 (2): 301; L Karakonstantis et al., Journal of Catalysis, 1990, 124 (2): 315; Kordulis et al., Applied Catalysis A: General, 2001, 209: 85), but this method will strengthen the interaction between the active component and the carrier, resulting in a reduction in the accumulation of the active component and the formation of relatively more Type I hydrogenation active centers , difficult to vulcanize

Method used

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  • Method for preparing loaded hydrofining catalyst
  • Method for preparing loaded hydrofining catalyst

Examples

Experimental program
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Effect test

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 was 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 For catalyst C2, the content of tungsten oxide determined by X-ray fluorescence spectrometry was 26.8wt%.

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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Abstract

The invention relates to a method for preparing a loaded hydrofining catalyst. The method comprises the following steps of: dissolving metal salts into an aqueous hydrogen peroxide solution so as to obtain impregnation liquid; carrying out impregnation on a carrier by using the impregnation liquid; and drying and roasting an impregnation product so as to obtain the loaded hydrofining catalyst. The catalyst prepared by using the method disclosed by the invention is higher in active component dispersity and poor in interaction of active components and carriers, and has better hydrodesulfurization activity and hydro-dearomatization activity in comparison with a catalyst prepared by using the conventional impregnation method.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a supported hydrorefining catalyst, and belongs to the technical field of preparation of a hydrorefining catalyst. Background technique [0002] The demand for oil products in the world is showing an upward trend. Such a large demand for oil products will have a non-negligible impact on society and the environment. Among them, the quality of oil products has become a focus of social attention. With the increasingly stringent environmental legislation and the gradual upgrading of oil quality standards, the production of clean oil has gradually become a very meaningful work. [0003] Hydrofining technology is an important method for the production of clean oil products. The supported catalyst with VIB group W or Mo as the main agent, group VIII metal Ni or Co as the auxiliary agent, and alumina as the carrier is currently the most widely used Hydrofinin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/30B01J29/16B01J29/78C10G45/08C10G45/12
Inventor 申宝剑王艳丹郭巧霞王亮袁儒婷廖礼俊孙发民王甫村戴宝琴田然张志华郭金涛
Owner BC P INC CHINA NAT PETROLEUM CORP
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