Hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of reducing the utilization of active metals and reducing the dispersion of active components , Unfavorable diffusion of reactant molecules and product molecules, etc., to achieve high dispersion and increase the loading capacity

Active Publication Date: 2013-06-12
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

In addition, the strong interaction between the active component and the support leads to the formation of Al-O-Mo chemical bonds, that is, the so-called "support effect", which makes the catalyst active component form a spinel structure and lose its catalytic activity on the one hand, On the other hand, it causes difficulty in sulfidation of active components and reduces catalyst activity (see F.Y.A.El Kady et al., Fuel 2010, 89: 3193; J.A. Bergwerff et al., Journal of the American Chemical Society 2004, 126: 14548; J.A. Bergwerff et al. al., Catalysis Today 2008, 130: 117; K. Bourikas et al., Journal of Colloid and Interface Science 1996, 184: 301; G. Mestl et al., C

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  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof

Examples

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Example Embodiment

[0029] A method for preparing a hydrogenation catalyst, wherein the carrier of the hydrogenation catalyst is loaded with VIB group and VIII group metal active components, and the preparation method includes:

[0030] (1) Prepare a salt solution containing VIB metals, acidify it by adding inorganic acid, and adjust its pH to 1-7;

[0031] (2) Prepare the organic quaternary ammonium salt solution, and add the organic quaternary ammonium salt solution dropwise to the salt solution containing VIB group metals at a rate of 1 ml / min to 5 ml / min during continuous stirring to form a suspension , Continue to stir for 0 minutes to 120 minutes;

[0032] (3) Transfer the suspension to an autoclave containing a carrier, and then place the autoclave in a rotating oven to make the particles in the suspension diffuse and deposit in the pores of the carrier at 50°C to 150°C , Aging for 10 hours to 30 hours; after aging, the suspension is filtered, washed with water, dried and calcined to obtain a si...

Example Embodiment

[0048] Example 1

[0049] Prepare 40mL 0.15mol / L sodium molybdate solution, during the stirring process, drop 2.4mol / L hydrochloric acid 3.0mL to obtain solution A; then prepare 20mL containing 0.792g dodecyltrimethylammonium chloride (DTAC) Solution B (mole MoO 4 2- :DTAC=1:0.5), while stirring continuously, add solution B to solution A at a rate of 1mL / min to form a suspension, continue stirring for 30min; then transfer the suspension to 2.04g Γ-Al with a diameter of 2-5mm 2 O 3 Then place the autoclave in a rotating oven to make the precipitated particles diffuse, deposit and age at 120℃ for 12h. After ageing, the suspension is filtered, washed with water, and dried at 120℃ for 10h, 500℃ Calcined for 4h to obtain Mo / Al 2 O 3 . Then prepare about 15mL nickel nitrate solution containing 5.3g nickel nitrate, and add 1.5mL dropwise to Mo / Al 2 O 3 It is soaked in it, placed at room temperature for 12 hours, then dried at 120°C for 10 hours, and calcined at 500°C for 4 hours. Final...

Example Embodiment

[0050] Example 2

[0051] Prepare 40mL 0.15mol / L sodium molybdate solution, during the stirring process, drop 2.4mol / L hydrochloric acid 3.5mL to obtain solution A; then prepare 20mL solution B (mole MoO) containing 0.792g DTAC 4 2- :DTAC=1:0.5), in the process of continuous stirring, add solution B dropwise to solution A at a rate of 3mL / min to form a suspension, continue stirring for 30min; then transfer the suspension to 2.04g Γ-Al with a diameter of 2-5mm 2 O 3 Then place the autoclave in a rotating oven to make the precipitated particles diffuse, deposit and age at 120℃ for 12h. After ageing, the suspension is filtered, washed with water, and dried at 120℃ for 10h, 500℃ Calcined for 4h to obtain Mo / Al 2 O 3 . Then prepare about 15mL nickel nitrate solution containing 5.8g nickel nitrate, and add 1.5mL of it dropwise to Mo / Al 2 O 3 It is soaked in medium, placed at room temperature for 12 hours, then dried at 120°C for 10 hours, and calcined at 500°C for 4 hours. Finally, NiM...

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Abstract

The invention provides a hydrogenation catalyst and a preparation method thereof. The preparation method uses metal active components of group VIB and VIII for step load, wherein metal of group VIB is molybdenum, metal of group VIII is cobalt or nickel, and a carrier is porous oxide. Load of group VIB metal uses a corresponding soluble salt as a raw material, inorganic acid is used as an acidifying agent, and a long-chain alkyl quaternary ammonium cation is used as a precipitating agent; and Mo-based single-component loaded catalyst is prepared by firstly synthesizing an organic-inorganic hybrid material suspension, performing aqueous phase diffusion and tunnel deposition, filtering, washing, drying, and roasting. Load of group VIII metal uses a corresponding soluble salt as a raw material, and the metal is loaded onto the carried through a normal-temperature isopyknic dipping technology. The method can effectively improve load capacity of the active components and dispersiveness of the active components in the tunnels; and the prepared hydrotreating catalysts is excellent in hydrodesulfurization activity.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrorefining catalysts, and in particular relates to a method for preparing a hydrogenation catalyst with high loading of active components and high dispersion. Background technique [0002] Hydrofining technology is the most important means to produce low-sulfur gasoline and diesel, and hydrofining catalyst is the core technology of hydrofining technology. The main active component is VIB group metal W or Mo, the VIII group metal Ni or Co is the auxiliary active component, and γ-Al 2 o 3 The supported catalyst is a hydrorefining catalyst widely used commercially. In addition to focusing on exploring new active components and supports, the current research and development of hydrofining catalysts is also one of the effective ways to develop high-performance catalysts based on traditional active component systems and supports, improving the dispersion and loading of active components in c...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/882C10G45/08
Inventor 鲍晓军韩伟石冈袁珮范煜刘海燕
Owner BC P INC CHINA NAT PETROLEUM CORP
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