Skeletal metal catalyst for hydrogenation in fixed bed and its preparing process

A framework metal and catalyst technology, applied in the field of framework metal catalyst and its preparation, can solve the problems of poor swelling performance of polyvinyl alcohol, poor catalyst molding effect, unsuitable for hydrogenation reaction, etc.

Inactive Publication Date: 2004-12-29
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the catalyst only partially has a macroporous structure, so it is not suitable for the hydrogenation reaction of larger molecules
However, in this method, when the extruded strip is formed, the extruded strip needs to be rapidly and initially dried at 100-200°C. Due to the poor swelling performance of polyvinyl alcohol with a high degree of polymerization, the catalyst molding effect is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1: Preparation of Catalyst A

[0017] Take by weighing 27g pseudoboehmite and 2g carboxymethyl cellulose and mix homogeneously, add 50ml of 5% citric acid solution and 50ml deionized water and stir and mix homogeneously, make colloid, then add 80g nickel-aluminum alloy powder (nickel 39.6% , aluminum 60.4%, particle diameter less than 0.14mm), fully kneaded, extruded into strips with a diameter of 1.8mm, dried under an infrared lamp, dried at 120°C for 16h, and then baked in air at 500°C for 1h, 700°C Calcined for 1h, 900°C for 4h, and made into particles with a length of 1-3mm. The activation conditions are: put 50ml of the above particles into 200ml of 20% NaOH solution, raise the temperature to 90°C and keep for 24h, wash with deoxygenated deionized water until the pH value is 7-8. The above activation operation was repeated once to finally obtain Catalyst A.

example 2

[0018] Example 2: Catalyst B Preparation

[0019] Take by weighing 40g pseudo-boehmite and 4g cinnamon powder and mix uniformly, add 2% acetic acid solution 60ml and 40ml deionized water and stir and mix uniformly to make jelly, then add 70g nickel-aluminum alloy powder (nickel 39.6%, aluminum 60.4 %, the particle diameter is less than 0.14mm), fully kneaded, extruded into strips with a diameter of 1.8mm, dried under an infrared lamp, dried at 120°C for 16h, and then roasted in air at 500°C for 1h, 700°C for 1h, Calcined at 900°C for 4h, and made into particles with a length of 1-3mm. The activation conditions are: put 50ml of the above particles into 200ml of 10% NaOH solution, raise the temperature to 80°C and keep for 4h, wash with deoxygenated deionized water until the pH value is 7-8. The above activation operation was repeated once to finally obtain catalyst B.

example 3

[0020] Example 3: Preparation of Catalyst C

[0021] Take by weighing 13g pseudo-boehmite and 6g scallop powder and mix uniformly, add 2% nitric acid solution 25ml and 40ml deionized water and stir and mix uniformly to make jelly, then add 90g nickel-aluminum alloy powder (nickel 39.6%, aluminum 60.4 %, the particle diameter is less than 0.14mm), fully kneaded, extruded into strips with a diameter of 1.8mm, dried under an infrared lamp, dried at 120°C for 16h, and then roasted in air at 500°C for 1h, 700°C for 1h, Calcined at 900°C for 4h, and made into particles with a length of 1-3mm. The activation conditions are: put 50ml of the above particles into 200ml of 10% NaOH solution, raise the temperature to 70°C and keep for 4h, wash with deoxygenated deionized water until the pH value is 7-8. The above activation operation was repeated 4 times to finally obtain catalyst C.

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PUM

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Abstract

The skeletal metal catalyst for hydrogenation in fixed bed is prepared with the alloy powder of Al and one or several of Ni, Co, Cu and Fe as main material, jelly prepared with pseudothin diasphore and other inorganic matter as adhesive and sesbania powder, carboxymethyl cellulose or other natural or synthetic organic matter as pore template agent, and through direct kneading, formation, roasting and activation with caustic soda solution. The catalyst may be used in hydrogenating saturation of aldehyde, ketone, nitrile and other unsaturated compound in fixed bed, and has excellent activity, selectivity and stability.

Description

technical field [0001] The invention relates to a skeleton metal catalyst for fixed-bed hydrogenation and a preparation method thereof, which belongs to the improvement of hydrogenation catalysts in the petrochemical industry, and is especially used as an industrial catalyst for hydrogenation of organic unsaturated compounds. Background technique [0002] Skeleton nickel (Raney Ni) is a metal nickel catalyst with a sponge-like pore structure. Since its invention in 1925, it has become an early-used hydrogenation catalyst with excellent performance. It has the characteristics of high activity, easy preparation and use, etc. And gradually developed into a larger family of catalysts, including framework nickel, framework cobalt, framework copper, framework iron and so on. However, this type of catalyst can only be used in suspended bed or batch operation, and it is not easy to be reused, and it is easy to be deactivated due to oxidation or other reasons if the operation is slig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/36
Inventor 刘晨光赵会吉白锐赵瑞玉殷长龙邢金仙方朝亮于建宁
Owner BC P INC CHINA NAT PETROLEUM CORP
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