Preparation method for novel gasoline hydrodesulfurization catalyst

A technology for desulfurization catalysts and gasoline hydrogenation, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of uneven distribution of acid centers on the catalyst surface, active metal Problems such as uneven distribution of components and small pore size can achieve the effects of improving catalytic performance, increasing reaction conversion rate, and improving desulfurization performance

Active Publication Date: 2013-02-13
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0003] The catalyst provided by CN1289830A takes silicon-containing alumina as a carrier, adopts the method of solution impregnation to load active components and auxiliary agents, wherein, using alumina as a catalyst carrier needs to modify it or add auxiliary agents; however, it is easy to Lead to uneven distribution of acid centers on the catalyst surface and uneven distribution of active metal components
[0006] Zeolite imidazole framework materials (ZIFs for short) are a new type of material with structural diversity, high specific surface area, good thermal and chemical stability, and strong hydrogen storage performance. However, so far, ZIFs are microporous materials. Small pore size limits its application in macromolecular reactions

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  • Preparation method for novel gasoline hydrodesulfurization catalyst
  • Preparation method for novel gasoline hydrodesulfurization catalyst

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Embodiment 1

[0037] This embodiment provides a gasoline hydrodesulfurization catalyst, the synthesis method of which is the same as that of Comparative Example 1, except that the obtained ZIF-8 carrier is treated with 0.02mol / L acetic acid in an acid solution for 0.5h. The conditions remain unchanged, and finally a gasoline hydrodesulfurization catalyst is obtained, which is denoted as Cat-2. The pore structure parameters of the acid solution-treated ZIF-8 carrier (referred to as Cat-2 support) are shown in Table 1. Among them, the powder XRD detection results of the carrier and the nitrogen adsorption-desorption detection curve are as follows: figure 1 and figure 2 Shown in Cat-2support.

Embodiment 2

[0039] This embodiment provides a gasoline hydrodesulfurization catalyst, the synthesis method of which is the same as in Example 1, except that the obtained ZIF-8 carrier is treated with 0.05 mol / L of acetic acid in an acid solution for 0.5 h. The conditions remain unchanged, and finally a gasoline hydrodesulfurization catalyst is obtained, which is denoted as Cat-3. The pore structure parameters of the acid solution-treated ZIF-8 carrier (referred to as Cat-3 support) are shown in Table 1. Among them, the powder XRD detection results of the carrier and the nitrogen adsorption-desorption detection curve are as follows: figure 1 and figure 2 Shown in Cat-3support.

Embodiment 3

[0041] This embodiment provides a gasoline hydrodesulfurization catalyst, and its synthesis method is the same as that of Example 1, except that the obtained ZIF-8 carrier is treated with 0.05mol / L of citric acid for 0.5h of acid solution, With other conditions unchanged, a gasoline hydrodesulfurization catalyst was finally prepared, which was denoted as Cat-4. The pore structure parameters of the acid solution-treated ZIF-8 carrier (referred to as Cat-4 support) are shown in Table 1. Among them, the powder XRD detection results of the carrier and the nitrogen adsorption-desorption detection curve are as follows: figure 1 and figure 2 Shown in Cat-4support.

[0042] It can be seen from the pore structure parameters of the four catalyst supports given in Table 1 that the acid solution-treated ZIF-8 support has a higher external specific surface area and pore volume, and the simultaneous presence of mesopores and micropores is beneficial to the reaction. The diffusion of the...

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Abstract

The invention relates to a preparation method for a novel gasoline hydrodesulfurization catalyst. The preparation method for the novel gasoline hydrodesulfurization catalyst comprises the following steps of: uniformly mixing a solvent, a metal ion precursor and an organic ligand; and then carrying out aging and solvent heat crystallization on an obtained mixture; filtering, washing and drying a solvent heat crystallization product, so as to obtain ZIFs; treating the obtained ZIFs by acid to modify the ZIFs, so as to obtain a hydrodesulfurization catalyst carrier; loading an active component on the hydrodesulfurization catalyst carrier by using an equivalent-volume impregnation method; and drying and roasting the hydrodesulfurization catalyst carrier, so as to obtain the gasoline hydrodesulfurization catalyst. The catalyst obtained by using the preparation method provided by the invention obtains better reaction performance on the gasoline hydrodesulfurization aspect.

Description

technical field [0001] The invention relates to a preparation method of a novel gasoline hydrodesulfurization catalyst, belonging to the technical field of preparation of petroleum hydrodesulfurization catalysts. Background technique [0002] With the increasingly stringent environmental protection regulations, the demand for the production of clean fuels is becoming increasingly urgent. Catalytic cracking (FCC) gasoline accounts for about 78% of the total gasoline in my country, and the sulfur content in gasoline restricted by environmental protection regulations mainly comes from FCC gasoline. At present, the catalysts used for hydrodesulfurization of oil products are mainly supported catalysts, and the carriers are mostly alumina and zeolite. [0003] The catalyst provided by CN1289830A uses silicon-containing alumina as a carrier, adopts the method of solution impregnation to load active components and auxiliary agents, wherein, using alumina as a catalyst carrier needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34C10G45/08
Inventor 范煜吴莉芳李国旗王世华石冈鲍晓军刘海燕
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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