Preparation method of methanol synthesis catalyst

A technology for synthesizing methanol and catalysts, applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of easy deactivation of auxiliary components and uneven distribution of auxiliary agents on the surface of catalysts, and increase the effective surface area. , Improve the overall activity and thermal stability, the effect of saving dosage

Inactive Publication Date: 2011-07-20
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the technical problem to be solved by the present invention is that in the preparation process of the catalyst preparation method in the prior art, the additive components are easily deactivated, and the obtained catalyst surface additives are unevenly distributed, thereby providing a catalyst for synthesizing methanol The preparation method, the additive components are not easy to deactivate during the preparation process, and the surface additives of the prepared methanol catalyst are evenly distributed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Add the co-solution containing 30g of copper nitrate and 11.8g of zinc nitrate into the sodium bicarbonate solution for mixing, and the mixed solution is neutralized at 50°C until the final pH is 6.5, and the copper-zinc suspension is obtained after aging solution; the ammonium bicarbonate solution is added to the solution containing 16.2g of aluminum nitrate, and after neutralization, it is mixed with the copper-zinc solution in parallel to obtain the parent body, which is washed with deionized water and filtered to NaNO 3 Disappeared, after repeating the filter press process for 3 times, dried at 100°C for 12 hours, and then roasted at 250°C for 5 hours to prepare a mixture containing copper, zinc and aluminum, which was tabletted, crushed, and sieved into 20-40 The mesh granules are obtained to obtain the parent granules.

[0018] 2) Prepare a potassium carbonate solution with a concentration of 1%, then impregnate the matrix particles with the same volume of the ...

Embodiment 2

[0020] Use the parent particle prepared in Example 1, then prepare the potassium carbonate solution with a concentration of 5.7%, impregnate the parent particle with the equal volume of the solution under vacuum conditions, the impregnated material is dried at 130° C., and the dried material is dried at 300 After calcination at ℃ for 4 hours, the finished catalyst C2 was obtained. The physical and chemical properties of C2 are shown in Table 1.

Embodiment 3

[0022] Use the parent particle prepared in Example 1, then prepare a potassium permanganate solution with a concentration of 12%, impregnate the parent particle with the same volume of the solution under vacuum conditions, and dry the impregnated material at 120 ° C. The dried material The finished catalyst C3 was obtained after calcination at 250° C. for 5 h. The physical and chemical properties of C3 are shown in Table 1.

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PUM

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Abstract

The invention provides a preparation method of a methanol synthesis catalyst. The preparation method comprises the following steps: co-precipitating soluble salts of copper, zinc and aluminum as well as an aqueous solution of an alkali metal salt to obtain a parent substance, and washing, drying, baking, tabletting, crushing and screening the parent substance to form particles; and preparing a salt solution of active components, dipping the particles in the solution in a vacuum environment by an isovolumetric mode, and drying and baking the dipped material to obtain the finished product of the methanol synthesis catalyst. By utilizing the preparation method of the methanol synthesis catalyst, the problems such as uneven distribution and high possibility of inactivation of surface active components of the catalyst obtained by the preparation method in the prior art are solved; and for the methanol synthesis catalyst obtained by the preparation method provided by the invention, the surface active components thereof are evenly distributed and not easily inactivated.

Description

technical field [0001] The invention belongs to the field of catalysts for synthesizing methanol, in particular to a method for preparing a catalyst for synthesizing methanol from CO, CO2 and H2. Background technique [0002] Methanol is one of the most basic organic chemical raw materials. In recent years, the demand and production capacity of methanol have continued to grow, and the use of methanol has also undergone new developments. Industrial-scale methanol is generally made with H 2 , CO, CO 2 The synthesis gas is produced by reacting under the conditions of certain pressure and temperature and the presence of a catalyst. With the continuous progress of synthetic methanol production technology, it was found that Cu-Zn-Al catalysts have good low-temperature methanol synthesis activity. The patent document whose publication number is CN101185894A discloses a preparation method of a copper-based catalyst. A mixed solution containing copper and zinc is co-precipitated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/889C07C31/04C07C29/154
CPCY02P20/52
Inventor 李景斌刘玉珍
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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