Multi-metal noumenon catalyzer for hydrodesulphurization of diesel oil, producing method and application of the same

A bulk catalyst and hydrodesulfurization technology, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems of high catalyst preparation cost, unfriendly raw materials, large catalyst particles, etc., and achieve simple and cheap raw materials, easy synthesis process, and high dispersion degree of effect

Inactive Publication Date: 2008-04-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this kind of synthetic method is that the strong ammonia water is used in the synthetic process, which will pollute the environment.
[0010] From existing reports, it is not difficult to find that the synthesis method of existing bulk catalysts has the following disadvantages: (1) the raw materials used are not friendly to the environment; (2) the catalyst preparation cost is relatively high; (3) the catalyst particles are relatively large , the activity needs to be further improved

Method used

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  • Multi-metal noumenon catalyzer for hydrodesulphurization of diesel oil, producing method and application of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation of NiMoW bulk catalyst among the present invention:

[0039] a. Weigh ammonium molybdate and ammonium metatungstate respectively, wherein Mo 6+ 0.01mol, W 6+ 0.01mol, they were dissolved in 350ml of water, ethylene glycol and cetyltrimethylammonium chloride mixed solvent to form a solution, and the solution was heated to the reaction temperature, stirring constantly; The basic nickel carbonate prepared by the disclosed method of Encyclopedia, containing Ni 2+ 0.03mol, it was dissolved in a small amount of polar solvent, made into a suspension, and heated to the reaction temperature; this reaction suspension was slowly added to the colorless transparent solution to form a light green reaction solution, at 150 Reflux reaction at the reaction temperature of ℃ for 20 hours; the yellow-green powder obtained by the reaction was filtered, washed, and dried at 120 ℃ to obtain a NiMoW catalyst precursor.

[0040] B, then the precursor of this catalyst is roast...

Embodiment 2

[0045] Same as Example 1, except that only polar solvent water and ethylene glycol are used in step a, and the synthesized catalyst product is represented by Cat-B. Its XRD characterization results are listed in Figure 1.

Embodiment 3

[0047] Same as Example 1, except that the polar solvent ethylene glycol is used in step a, and the synthesized catalyst product is represented by Cat-C. Its XRD characterization results are listed in Figure 1.

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Abstract

A polymetallic bulk catalyst for diesel oil hydrodesulfurization is provided. The particle diameter of the present invention is 10-100 nm, and the present invention consists of a species of VIII metal and two species of VIB metal, wherein, the mole ratio of the VIII metal and the VIB metal is 1:9-9:1, while the mole ratio of two species of VIB metal is 1:5-5:1. The preparation method is that: a) the basic carbonate of VIII metal is led to dissolve in solvent to form suspension liquid; b) two species of metal salts of the VIB metal are led to dissolve in the solvent, and surfactant is added into the solvent, stirred and heated to 50-250 DEG C; c) the suspension liquid in step a is added into the solvent in step b and led to react in reflux for 4-25 hours under 50-250 DEG C; d) the product obtained in step c is filtered, washed and dried to obtain target product. The catalyst of the present invention is used in the ultra-deep hydrodesulfurization of diesel oil and shows extremely high hydrodesulfurization activity. Under the same operating conditions, the activity of the present invention is 5.9 times as much as industrial reference agent.

Description

technical field [0001] The invention relates to a multi-metal bulk catalyst for ultra-deep hydrodesulfurization of diesel oil. [0002] The present invention also relates to the preparation of the above-mentioned multi-metallic bulk catalyst. [0003] The present invention also relates to the application of the above-mentioned multi-metallic bulk catalyst. Background technique [0004] With the increasingly stringent environmental regulations, the sulfur content in liquid fuels is required to be lower and lower, but the high-sulfur crude oil is increasing year by year worldwide, so the development of diesel ultra-deep hydrodesulfurization catalysts with good performance has become a new topic that has attracted worldwide attention . It is well known that if the sulfur content in diesel is too high, sulfur oxides (SO x ) lead to acid rain and solid dust pollution, but also cause irreversible poisoning of the three-way catalyst of the motor vehicle exhaust purification syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08
Inventor 李灿蒋宗轩王璐
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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