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Preparation method of low-sodium copper zinc aluminum hydrogenation catalyst

A copper-zinc-aluminum catalyst, hydrogenation catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc.

Inactive Publication Date: 2014-01-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no method of removing impurity sodium by calcining+water washing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] According to the formula and process of the CO hydrogenation catalyst, the ternary matrix of the copper-zinc-aluminum hydrogenation catalyst obtained by using sodium bicarbonate as the precipitant of the matrix is ​​filtered and dried, and then granulated. After 100 minutes, the loss on ignition of the particles was measured, and then the particles after the initial calcination were washed five times with 80°C deionized water, and the sodium content of the catalyst body was tested, and the sodium content was less than or equal to 200ppm (measured as Na 2 O meter), after qualified, the washed and filtered particles were baked at 100°C for 12 hours, and after drying, the particles were calcined for a second time at 350°C for 30 minutes to form the catalyst Cat1-a.

Embodiment 2

[0018] According to the formula and process of mixed butyraldehyde hydrogenation catalyst, the ternary matrix of copper-zinc-aluminum hydrogenation catalyst obtained by using the mixed solution of sodium carbonate and sodium bicarbonate as the precipitant of the matrix is ​​filtered and dried, and then granulated. Carry out the initial calcination, the calcination time is 60min, measure the loss on ignition of the particles, then wash the particles six times with 70°C deionized water, test the sodium content of the catalyst body, wash and filter the particles after passing the test, bake at 120°C for 10h, dry them in The particles were calcined for a second time at 340° C. for 45 minutes, and the catalyst Cat2-a was obtained by molding.

Embodiment 3

[0022] According to the formula and process of octenal hydrogenation reaction catalyst, the ternary matrix of copper-zinc-aluminum hydrogenation catalyst obtained by using sodium hydroxide as the precipitant of the matrix is ​​filtered and dried, and then granulated. The calcination time is 20 minutes, and the loss on ignition of the particles is measured, and then the particles after the initial calcination are washed five times with 60°C deionized water, and the sodium content of the catalyst body is tested. After passing the washing, the filtered particles are baked at 90°C for 12 hours, and dried at 300°C The particles were calcined for 60 minutes twice to form the catalyst Cat3-a.

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PUM

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Abstract

The invention relates to a preparation method of a low-sodium copper zinc aluminum hydrogenation catalyst. The preparation method comprises the steps of treating a copper zinc aluminum catalyst ternary matrix to obtain catalyst particles, wherein the copper zinc aluminum catalyst ternary matrix is prepared by taking one or more sodium-containing alkalis as a matrix precipitating agent; calcining the particles in a calcining furnace for the first time; washing the particles, which are calcined for the first time, by using deionized water for at least one time until the sodium content of the catalyst is less than or equal to 200 ppm (based on Na2O); after washing and filtering, drying the particles, calcining the particles for the second time and forming to prepare the required catalyst. The catalyst is applicable to the field of hydrogenation.

Description

technical field [0001] The invention discloses a preparation method of a copper-zinc-aluminum hydrogenation catalyst with reduced sodium content, belonging to the technical field of catalysts. Background technique [0002] Copper-zinc-aluminum hydrogenation catalysts are widely used in the petrochemical and fertilizer industries, as follows: [0003] (1) CO synthesis methanol reaction [0004] (2) Mixed butyraldehyde hydrogenation reaction [0005] (3) Hydrogenation reaction of octenal [0006] The above examples show that the copper-zinc-aluminum hydrogenation catalyst can be used in many hydrogenation fields such as CO, mixed butyraldehyde, octenal, etc. The reaction can be exothermic or endothermic, and the copper and zinc oxides in the catalyst are called active precursors , alumina as the carrier. There are currently two types of copper-zinc-aluminum hydrogenation catalyst preparation methods, one is the co-precipitation method of nitrate plus alkali, and the other ...

Claims

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Application Information

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IPC IPC(8): B01J23/80
Inventor 陈海波王琼毛春鹏仇冬殷惠琴于杨贺健曹建平
Owner CHINA PETROLEUM & CHEM CORP