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Hydrogenation catalyst and preparation method and application thereof

A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low hydrogenation catalyst activity, complicated preparation process, poor controllability, etc., and achieve improved Effects of metal utilization, high catalytic performance, and hydrogenation performance improvement

Active Publication Date: 2018-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the defects of low activity of hydrogenation catalysts in the prior art, relatively complicated preparation process, poor controllability and high cost, the present invention provides a new hydrogenation catalyst, a method for preparing a hydrogenation catalyst and a hydrogenation catalyst prepared by the method The hydrogenation catalyst obtained and the application of the above-mentioned hydrogenation catalyst in hydrodesulfurization, the preparation method provided by the invention saves the vulcanization process, the prepared catalyst active component is fully vulcanized, and the hydrogenation performance of the catalyst is significantly improved

Method used

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

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preparation example Construction

[0040] The present invention also provides a kind of preparation method of hydrogenation catalyst, and this preparation method comprises the following steps:

[0041] (1) The carrier is impregnated with a tetrathiomolybdate solution, and then heat-treated in an inert atmosphere or a reducing atmosphere to obtain a composite material A, and the heat treatment makes Mo in the composite material A exist in the form of trisulfide;

[0042] (2) impregnating the composite material A with a solution containing a Group VIII metal salt, and drying the impregnated solid material.

[0043] In the present invention, in order to further improve the hydrogenation performance of the prepared catalyst, simplify the operation steps, and reduce the catalyst production cost, the preferred tetrathiomolybdate solution is prepared by the following method:

[0044] a) mixing molybdenum-containing compound, organic sulfur source and water;

[0045] b) reacting the mixture obtained in step a) at 50-1...

Embodiment approach

[0056] According to a preferred embodiment of the present invention, the reaction is carried out under airtight conditions. Operating under airtight conditions, the hydrogen sulfide obtained from the hydrolysis of organic sulfur sources will not be released into the air, which will neither cause air pollution, but also be more conducive to the hydrolysis of hydrogen sulfide into divalent sulfide ions, and more effective use of sulfur sources. Preparation of tetrathiomolybdate solution with better performance.

[0057] According to the present invention, it is preferred to adjust the pH by adding an acid and / or base to the mixture in step b), and the acid may be an organic acid or an inorganic acid, which is not particularly limited in the present invention.

[0058] According to the present invention, preferably, the acid is at least one selected from hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, formic acid and acetic acid, more preferably hydrochloric acid....

Embodiment 1

[0095] (1) Preparation of tetrathiomolybdate solution

[0096] Mix sodium molybdate with water, stir for 40 minutes, add thioacetamide, and stir for 30 minutes to prepare 40 mL of a solution containing 0.35 mol / L sodium molybdate and 1.75 mol / L thioacetamide. It was heated to 95°C for 10 hours to obtain tetrathiomolybdate solution, which was then concentrated to 8 mL; UV-Vis test was carried out on the obtained tetrathiomolybdate solution, and the UV-Vis characterization results were as follows: figure 2 As shown, the peaks at wavelengths of 260nm, 317nm and 468nm in the figure indicate that MoS in solution 4 2- The presence.

[0097] (2) Preparation of hydrogenation catalyst

[0098] Saturated impregnation of the above-mentioned tetrathiomolybdate solution in 10 g of γ-Al with a diameter of 2-5 mm 2 o 3 Carrier (specific surface area 231m 2 / g, pore volume 0.709mL / g, the same below), the impregnation time was 4h, then dried at 80°C for 3h under nitrogen atmosphere, and...

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Abstract

The invention relates to the field of hydrogenation and refining, and discloses a hydrogenation catalyst and a preparation method and application thereof. The catalyst comprises a carrier, and activemetal components which are loaded on the carrier, wherein the active metal components include Mo and at least one VIII cluster metal element; Mo is in a form of trisulfide; the VIII cluster metal element is in a form of salt. The hydrogenation catalyst preparation method comprises the following steps: dipping the carrier in a molybdate tetrathiolate solution; thermally processing in an insert atmosphere or reduction atmosphere to obtain a composite material A, wherein Mo in the composite material A is in the form of trisulfide during thermal processing; dipping the composite material A in a solution containing the VIII cluster metal salt; drying the dipped solid material. With the adoption of the preparation method, the vulcanization process is eliminated; the active components of the prepared catalyst are fully vulcanized; the hydrogenation performance of the catalyst is obviously improved.

Description

technical field [0001] The invention relates to the field of hydrorefining, in particular to a hydrogenation catalyst, a preparation method of the hydrogenation catalyst, a hydrogenation catalyst prepared by the preparation method and its application in hydrodesulfurization. Background technique [0002] Hydrogenation technology is the most important means of producing clean oil products, among which efficient hydrogenation catalyst is the core technology of hydrogenation 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-A1 2 o 3 or modified γ-A1 2 o 3 The supported catalyst is a hydrogenation catalyst widely used in industry at present. The traditional preparation technology mainly uses impregnation to introduce the oxidized precursor of the active component into the pores of the carrier, and then aging, drying, and roasting to obtain the hydrogenation catalyst. Among them, Co, Ni, M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/02B01J37/08C10G45/08
CPCB01J27/0515B01J37/0205B01J37/0236B01J37/024B01J37/08C10G45/08C10G2300/202C10G2300/70
Inventor 高杨韩伟龙湘云梁家林李明丰聂红
Owner CHINA PETROLEUM & CHEM CORP
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