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Process for preparing modified amorphous nickel alloy catalyst

An alloy catalyst and amorphous nickel technology are applied in the field of preparation of amorphous nickel alloy catalysts, which can solve the problems of low utilization rate of metal additives, avoid dissolution loss, high hydrogenation activity, high initial activity and stability. sexual effect

Active Publication Date: 2008-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a new modification method for amorphous nickel alloy catalysts in view of the low utilization rate of metal additives in the existing technology for producing amorphous alloy catalysts

Method used

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  • Process for preparing modified amorphous nickel alloy catalyst

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preparation example Construction

[0012] According to the preparation method of the present invention, the alkali-soluble salt of the metal additive can be directly added to the mixture formed by the amorphous nickel alloy catalyst and deionized water, or the alkali-soluble salt of the metal additive can be deionized with a certain amount of Ionized water is dissolved and then mixed with amorphous nickel alloy. When the additive metals are two or more, the alkali-soluble salts of different metal additives or the salt solutions of metal additives can be contacted with the prepared amorphous alloy at the same time, or can be successively contacted with the prepared Contact reactions of amorphous alloys. The reaction process is preferably carried out under stirring.

[0013] The preparation of nickel-aluminum alloy and the extraction and dealumination of the present invention can be carried out according to existing methods, for example, according to the methods disclosed in CN1605388A, CN1421383A, and CN1073726...

Embodiment 1

[0018] This example illustrates the preparation of additive-modified amorphous nickel alloy catalysts by the method of the present invention.

[0019] Add 500 grams of nickel and 500 grams of aluminum into the graphite crucible, place it in a high-frequency furnace and heat it to 1400 ° C to melt it to alloy it, and then use an inert gas to spray the alloy liquid from the nozzle under the quartz tube to the speed On the 800 rpm copper roller, cooling water is passed through the copper roller, and the alloy liquid is thrown out along the tangent line of the copper roller after rapid cooling to form scale-like strips, which are ground and sieved.

[0020] Slowly add 50 g of alloy particles with a particle size of 120 mesh to 200 mesh into a beaker filled with 500 grams of 20% by weight sodium hydroxide aqueous solution, control its temperature to 100° C. and keep stirring at constant temperature for 1 hour. After stopping heating and stirring, let it stand for a period of time. ...

Embodiment 2

[0022] This example illustrates the preparation of additive-modified amorphous nickel alloy catalysts by the method of the present invention.

[0023] Add 500 grams of nickel and 500 grams of aluminum into the graphite crucible, heat it in a high-frequency furnace to 1400 ° C to melt it, and then use an inert gas to spray the alloy liquid from the nozzle under the quartz tube to the On the copper roller with a rotating speed of 800 rpm, the cooling water is passed through the copper roller. After rapid cooling, the alloy liquid is thrown out along the tangent of the copper roller to form scale-like strips. The scale-like strips are ground and sieved.

[0024] Slowly add 50 g of alloy particles with a particle size of 120 mesh to 200 mesh into a beaker filled with 500 grams of 20% by weight sodium hydroxide aqueous solution, control its temperature to 100° C. and keep stirring at constant temperature for 2 hours. After stopping heating and stirring, let it stand for a period of...

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Abstract

Disclosed is a preparation method for modified noncrystalline nickel alloy catalyst, comprising processes of heating up the metallic nickel and the metallic aluminium into a melting state, preparing the nickel aluminium alloy by rapid quenching, and extraction and dealuminizing; the utility model is characterized in that the alloy got from the extraction and dealuminizing is washed to a PH value of 7 to 13 by the deionized water; and then the alloy is contacted with the salt solution of one or a plurality of metal promoters selected from the rare earth metal or the IIB,VIB,VIIB,VIII group metal; and calculated based on the weight of the metal nickel, the weight of the promoter metal used in the contact is less than 10 percent by weight. The metallic modified noncrystalline alloy prepared by the method has the advantages of high retention rate of the metal promoters, high hydrogenation activity and stability.

Description

technical field [0001] The invention relates to a preparation method of an amorphous nickel alloy catalyst. Background technique [0002] The activity, selectivity, thermal stability and service life of the amorphous nickel alloy catalyst modified with metal additives can be improved. At present, the method of adding additives to amorphous alloy catalysts is the alloying method, that is, the metal additives are mixed with metal aluminum and nickel and melted together during the alloy smelting process to form a multi-element metal alloy, and then the multi-element metal alloy is subjected to alkali treatment A metal-modified amorphous nickel alloy catalyst is prepared. Adopt this method to prepare amorphous nickel alloy catalyst, the additive amount upper limit of auxiliary agent is the solubility of the metal in nickel metal as auxiliary agent, and the addition amount of the metal with big solubility such as Fe can be bigger, the metal with little solubility such as Mo The...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/835C07C31/26C07C29/132C07B35/02
Inventor 潘智勇董明会张晓昕孟祥堃慕旭宏宗保宁王宣
Owner CHINA PETROLEUM & CHEM CORP
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