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Hydrogenation catalyst preparation method, and catalyst prepared by method, and applications thereof

A hydrogenation catalyst, molybdenum compound technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low hydrogenation catalyst activity, complex preparation process, poor controllability, etc. The effect of saving the start-up cycle, saving the start-up time, and improving the hydrogenation performance

Active Publication Date: 2019-11-29
CHINA PETROLEUM & CHEM CORP +1
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  • 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, complicated preparation process, poor controllability and high cost, the present invention provides a new preparation method of hydrogenation catalyst and the hydrogenation catalyst prepared by the method Catalyst 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 preparation method, and catalyst prepared by method, and applications thereof
  • Hydrogenation catalyst preparation method, and catalyst prepared by method, and applications thereof
  • Hydrogenation catalyst preparation method, and catalyst prepared by method, and applications thereof

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preparation example Construction

[0027] The invention provides a method for preparing a hydrogenation catalyst, the preparation method comprising the following steps: (1) introducing tetrathiomolybdate and Group VIII metal salt onto a carrier to obtain a composite material A; (2) The composite material A is heat-treated under an inert atmosphere or a reducing atmosphere, and the heat treatment makes Mo in the composite material A exist in the form of trisulfide, and the Group VIII metal element exists in the form of a salt.

[0028] In the present invention, preferably, the method for introducing tetrathiomolybdate and Group VIII metal salts onto the carrier as described in step (1) is: prepare tetrathiomolybdate solution, and add Group VIII The metal salt forms a mixed solution, and the carrier is impregnated with the mixed solution, and then dried; or the carrier is impregnated with a tetrathiomolybdate solution and a solution containing a Group VIII metal salt, and dried after each impregnation.

[0029] I...

Embodiment approach

[0042] 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.

[0043] 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.

[0044] 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

[0092] (1) Preparation of mixed solution of tetrathiomolybdate and nickel acetate

[0093] (a) Mix sodium molybdate with water, stir for 40 minutes, add thioacetamide, stir for 30 minutes, prepare 40 mL of sodium molybdate containing 0.35 mol / L, 1.75 mol / L thioacetamide solution, airtight condition , heated to 95°C for 10 hours to obtain a tetrathiomolybdate solution; UV-Vis test was performed on the obtained tetrathiomolybdate solution, and the UV-Vis characterization results were as follows: figure 1 As shown, the peaks at wavelengths of 260nm, 317nm and 468nm in the figure indicate that MoS in solution 4 2- (b) Nickel acetate was weighed according to the Ni:Mo molar ratio of 0.5, added to the above solution to obtain a mixed solution, and then concentrated to 8 mL.

[0094] (2) Preparation of hydrogenation catalyst

[0095] Using the above mixed solution solution to 10g of γ-Al with a diameter of 2-5mm 2 o 3 Carrier (specific surface area 231m 2 / g, pore volume 0.709m...

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Abstract

The invention relates to the field of hydrofining, and discloses a hydrogenation catalyst preparation method, and a catalyst prepared by the method, and applications thereof. The preparation method comprises: (1) introducing tetrathiomolybdate and a VIII group metal salt into a carrier to obtain a composite material A; and (2) carrying out heat treatment on the composite material A in an inert atmosphere or a reducing atmosphere, wherein based on the heat treatment, the Mo in the composite material A exists in the form of a trisulfide, and the VIII group metal element exists in the form of a salt. According to the present invention, the preparation method eliminates the vulcanization process, and the active component of the prepared catalyst is fully vulcanized so as to significantly improve the hydrogenation performance of the catalyst is.

Description

technical field [0001] The invention relates to the field of hydrorefining, in particular to a method for preparing a hydrogenation catalyst, a hydrogenation catalyst prepared by the method and an 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, Mo and W active components exist in the for...

Claims

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Application Information

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IPC IPC(8): B01J27/051C10G45/08
CPCB01J27/0515C10G45/08C10G2300/202C10G2300/70
Inventor 韩伟龙湘云杨清河邓中活
Owner CHINA PETROLEUM & CHEM CORP
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