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Method for activating a fixed catalyst bed which contains monolithic shaped catalyst bodies or consists of monolithic shaped catalyst bodies

A monolithic catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve problems such as damage to the skeleton of the molded body, unfavorable mechanical stress, etc.

Inactive Publication Date: 2019-05-21
BASF SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the uncontrolled formation of relatively large amounts of hydrogen during activation may not only lead to unfavorable mechanical stresses on the catalytically active outer layers of the shaped body, but may also damage the skeleton of the shaped body

Method used

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  • Method for activating a fixed catalyst bed which contains monolithic shaped catalyst bodies or consists of monolithic shaped catalyst bodies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0033] 1. A method for activating a catalyst fixed bed comprising or consisting of a monolithic shaped catalyst body comprising at least one catalyst selected from the group consisting of Ni, Fe, Co, Cu, Cr, Pt, A first metal of Ag, Au and Pd and comprising at least one second component selected from the group consisting of Al, Zn and Si, and wherein for activation the catalyst fixed bed is treated with an aqueous base at a concentration not exceeding 3.5% by weight, wherein The base is selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, and mixtures thereof, and wherein the catalyst fixed bed has a temperature gradient during activation and is at the coldest point in the catalyst fixed bed and the hottest point in the catalyst fixed bed The temperature difference between them should not exceed 50K.

[0034] 2. A method of providing a reactor comprising a fixed bed of activated catalyst, wherein

[0035] a) introducing into the reacto...

Embodiment

[0254] The reactants used and the products obtained were analyzed in undiluted form by means of standard gas chromatography with FID detector. The following values ​​are GC values ​​in area % (excluding water).

[0255] The shaped nickel-aluminum catalyst bodies used in the application examples were prepared on the basis of the examples for the preparation of catalyst foams presented in EP 2 764 916 A1.

[0256] Option a):

[0257] 0.5 g of polyvinylpyrrolidone (molecular weight: 40 000 g / mol) was dissolved in 29.5 g of demineralized water and 20 g of aluminum powder (particle size 75 μm) were added. The resulting mixture was then stirred to obtain a homogeneous suspension. Then the average pore size is 580μm, the thickness is 1.9mm and the basis weight is 1000g / m 2 The nickel foam was introduced into the suspension and stirred vigorously again. The foam thus applied was placed on a paper towel and the excess suspension was carefully wiped off. The thus coated foam was heat...

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Abstract

The present invention relates to a novel method for activating a fixed catalyst bed, to a method for providing a reactor which contains such an activated fixed catalyst bed and to the use in hydrogenation reactions of the activated fixed catalyst bed and of reactors that contain such an activated fixed catalyst bed.

Description

Background of the invention [0001] The present invention relates to a new method for activating a fixed bed of catalyst, a method for providing a reactor comprising a fixed bed of catalyst which has been activated in this way, and a fixed bed of activated catalyst and a reactor comprising the fixed bed of activated catalyst in hydrogenation Use in React. [0002] current technology [0003] Raney metal catalysts are highly active catalysts that have found widespread commercial use, especially for the hydrogenation of mono- or polyunsaturated organic compounds. Raney catalysts are generally alloys comprising at least one catalytically active metal and at least one alloy component which is soluble (leachable) in alkali. Typical catalytically active metals are eg Ni, Fe, Co, Cu, Cr, Pt, Ag, Au and Pd, while typical leachable alloy components are eg Al, Zn and Si. Such Raney metal catalysts and their preparation are described, for example, in US 1,628,190, US 1,915,473 and US 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/02B01J37/06B01J37/08B01J23/883B01J25/00B01J25/02B01J35/00B01J35/04B01J35/10C07C29/141
CPCB01J23/883B01J25/00B01J25/02B01J35/0026B01J35/04B01J35/10B01J35/1076B01J37/0217B01J37/0225B01J37/06B01J37/08C07C29/141C07C29/172C07C31/207C07C31/12B01J8/02B01J37/0228
Inventor M·施赖伯Z·科坦贾克M·尼勒斯I·德维斯普莱尔M·施瓦茨R·萍克斯M·K·施勒特尔
Owner BASF SE