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Ru/Al2O3 methanation dehydrogenation catalyst and preparation method thereof

A technology for purifying catalysts and catalysts, used in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., to achieve the advantages of simple preparation methods, low equipment requirements, and solving purification problems Effect

Active Publication Date: 2012-07-25
贵州鑫醇科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Supported ruthenium catalysts are versatile and can be used for CO 2 Methanation reaction, CO methanation reaction to remove a small amount of CO, ammonia synthesis reaction, benzene selective hydrogenation reaction, benzene partial dehydrogenation to cyclohexene (CN 102125841A) and other organic reactions (hydrogenation, oxidation, isomerization, metathesis, etc.) , but applied to the CO methanation reaction to remove a small amount of H in industrial CO 2 Has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Put 20g of activated alumina particles with a diameter of 2-3mm into a pre-cleaned and dried corundum crucible, place them in a muffle furnace for roasting, and slowly increase the temperature from room temperature to 400°C through a program, and cool after constant temperature for 8 hours. After cooling, the oxidation The aluminum carrier is soaked in dilute nitric acid with a concentration of 2% at 50°C for 10 hours, washed with deionized water until neutral, dried in an oven, and stored in a desiccator; weigh 0.90g RuCl 3 ·3H 2 O is poured into 12 ml of dilute hydrochloric acid solution with a concentration of 1.0%, and stirred until it is completely dissolved to obtain an aqueous solution of metal ions. Add 15 g of pre-treated alumina carrier to the above aqueous solution, filter the solution after immersion for 8 hours, and pour the impregnated Catalyst samples were placed in an oven and dried at 140°C, cooled to room temperature and then placed in 5% NaHCO 3 The ...

example 2

[0018] In Example 1, the carrier calcination temperature in the catalyst preparation step was changed to 900° C., which is the cost example. Performance evaluation condition is the same as embodiment 1, is 1200h at space speed -1 , the pressure is 0.30MPa, and the reaction temperature is 361.7°C, the H in the reaction tail gas 2 The content is 443ppm.

example 3

[0020] In Example 1, the carrier calcination temperature in the catalyst preparation step was changed to 1200° C., which is the cost example. Performance evaluation condition is the same as embodiment 1, is 1200h at space speed -1 , the pressure is 0.30MPa, and the reaction temperature is 463.7°C, the H in the reaction tail gas 2 The content is 952ppm.

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Abstract

The invention aims at providing a preparation method of a ruthenium catalyst for removing trace H2 from high-concentration CO gas. The catalyst is prepared by an immersion method, and takes ruthenium as an active ingredient and aluminum oxide as a carrier. The catalyst prepared by the method has the advantages that the catalyst preparation method is simple, the active ingredient is uniformly loaded, and the obtained catalyst has excellent performance; and by using the catalyst, CO and H2 in industrial CO gas carry out methanation reaction, and H2 content in the reaction tail gas is lower than 1000ppm, so that the purification problem of CO gas in oxo synthesis industry is effectively solved.

Description

technical field [0001] The invention relates to a catalyst for dehydrogenation and purification, in particular to a preparation method and application of a Ru catalyst for dehydrogenation and purification of high-concentration CO gas, and belongs to the field of catalysts. Background technique [0002] CO plus H 2 The synthesis of methane is a well-known heterogeneous catalytic gas phase reaction, and a lot of research has been carried out over the years. In 1902, Satatier and Senderenst first reported CO and H 2 It can be converted into methane under the action of nickel catalyst. In 1926, F.Fischer and H.Tropsch reported CO / H 2 Hydrocarbons and oxygenates of a wide range of molecular weights can be produced by catalytic conversion, which is known as Fischer-Tropsch synthesis. [0003] CO and H can be achieved with a suitable catalyst 2 Direct methanation reaction to remove a small amount of H in CO-rich gas 2 (or Rich H 2 A small amount of CO in the gas). At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46C01B31/18C01B32/40
Inventor 姚元根周张锋乔路阳崔国静宗珊珊潘鹏斌林凌覃业燕李兆基
Owner 贵州鑫醇科技发展有限公司
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