Carbon monoxide methanating catalyst and preparation method thereof

A methanation catalyst, carbon monoxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrocarbon production from carbon oxide, etc., can solve the problems of complex preparation process and high nickel content, Achieve high catalytic activity, concentrated pore size distribution, and simple preparation method

Inactive Publication Date: 2014-01-01
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned methanation catalysts either have high nickel content or have cost technical problems such as complicated preparation process

Method used

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  • Carbon monoxide methanating catalyst and preparation method thereof
  • Carbon monoxide methanating catalyst and preparation method thereof
  • Carbon monoxide methanating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh Ni(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O, Mn(NO 3 ) 2 , Zr(NO 3 ) 4 ·5H 2 O and dispersant A 3.613 g, 30.464 g, 1.112 g, 3.345 g, 0.3 g were made into a 200 mL solution, and sodium hydroxide was used as a precipitating agent, and co-current co-precipitation was carried out at 40 ° C, and the pH was controlled to be 8-10. Stirring was continued for 1 h after completion, and then left to age for 16 h. The resulting precipitate was filtered, dried at 90 °C for 12 h, and calcined at 700 °C for 4 h to obtain the catalyst.

Embodiment 2

[0035] Weigh Ni(NO 3 ) 2 6H 2 O, Al(NO 3 ) 3 9H 2 O, Fe(NO 3 ) 3 9H 2 O, Zr(NO 3 ) 4 5H 2 O and dispersant B 4.954g, 28.698g, 0.623g, 2.509g, 0.4g were made into a 200mL solution, and ammonium bicarbonate was used as a precipitating agent, and co-current co-precipitation was carried out at 60°C, and the pH was controlled to be 8-10. Stirring was continued for 1 h, and then aged for 16 h. The resulting precipitate was filtered, dried at 90°C for 12 h, and calcined at 800°C for 5 h to obtain the catalyst.

Embodiment 3

[0037] Weigh Ni(NO 3 ) 2 ·6H 2 O, Al(NO 3 ) 3 9H 2 O, Co(NO 3 ) 2 ·6H 2 O, Zr(NO 3 ) 4 ·5H 2 O and dispersant C 4.011 g, 30.464 g, 0.446 g, 0.836 g, 0.5 g were prepared into a 200 mL solution, and sodium carbonate was used as a precipitating agent, and co-current co-precipitation was carried out at 80°C, and the pH was controlled at 8-10, and the Stirring was continued for 1 h, and then aged for 16 h. The resulting precipitate was filtered, dried at 90°C for 12 h, and calcined at 800°C for 6 h to obtain the catalyst.

[0038] figure 1 It is the X-ray diffraction pattern after reduction of the catalyst (a) obtained in Example 2 of the present invention and the catalyst (b) obtained in Comparative Example 1. Depend on figure 1It can be seen that the catalyst designed in the present invention has no new diffraction peaks after adding additives, and the shape of each diffraction peak becomes diffuse, which promotes the dispersion of each component, and the grain size...

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Abstract

The invention discloses a carbon monoxide methanating catalyst with high hydrothermal stability and a preparation method thereof, and belongs to the technical field of preparation of catalysts. The carbon monoxide methanating catalyst is prepared mainly by a co-precipitation method according to the following steps: taking alumina (Al2O3) as a carrier and metal nickel as an active component, adding Zr and transition metals as additives, uniformly mixing salt solutions, precipitating, aging, performing suction filtration, washing, drying and calcining the mixture. The preparation method is simple; raw materials are easily available; the cost is low; and the prepared catalyst has the characteristics of high specific surface area, large pore volume and concentrated pore size distribution, is applicable to hydrogenation reactions, in particular to methanation reaction of high-concentration carbon monoxide, and has the advantages of wide using temperature range, high catalytic activity, high hydrothermal stability and the like.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a carbon monoxide methanation catalyst with high hydrothermal stability and a preparation method thereof. Background technique [0002] my country's energy pattern is characterized by "short of oil, less gas, and rich in coal". This resource structure has led to a serious contradiction between supply and demand in my country's natural gas market, and the development of coal-to-natural gas technology is of great significance to ensure my country's energy security. Many experts believe that the energy conversion rate of coal-to-natural gas is higher than that of coal-to-methanol, dimethyl ether, and coal-to-oil, and the water consumption is lower. The synthesis gas produced by coal gasification contains a large amount of carbon monoxide and hydrogen, and its methanation to produce methane gas is considered to be a simple and efficient way to produce high c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/889B01J35/10C07C9/04C07C1/04
Inventor 詹瑛瑛辜冬梅陈崇启郑起魏可镁林性怡
Owner FUZHOU UNIV
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