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Organic silicon waste contact body borne nickel-based methanation catalyst and preparation method therefor

A technology of organosilicon waste contact body and methanation catalyst is applied in the field of nickel-based methanation catalyst supported by organosilicon waste contact body and its preparation field, which can solve the problems of added value of secondary pollution products, complicated treatment process, etc. The effect of resisting carbon deposition, inhibiting agglomeration and sintering, and improving thermal conductivity

Active Publication Date: 2015-08-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a lot of research has been done on the treatment of waste contacts, there are still problems such as complicated treatment process, serious secondary pollution and low added value of products.

Method used

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  • Organic silicon waste contact body borne nickel-based methanation catalyst and preparation method therefor
  • Organic silicon waste contact body borne nickel-based methanation catalyst and preparation method therefor
  • Organic silicon waste contact body borne nickel-based methanation catalyst and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Pretreatment of silicone waste contacts:

[0078] 1) Place the organic silicon waste body in a muffle furnace, calcinate at 300°C for 5 hours, then crush and sieve the samples with a particle size of 0.5-100 μm for use;

[0079] 2) Put 10 g of the sieved organic silicon waste contact body in a beaker, add 30 mL of 2mol / L nitric acid, put it on a magnetic stirrer, stir at 20°C for 12 hours, pour the supernatant into a waste liquid bottle, After that, wash repeatedly with water until the washing solution is neutral, then filter, and dry the obtained sample in an oven at 100°C for 24 hours; put the dried sample on a ball mill for 12 hours, and the obtained silicon waste contact body is named WCM, and stored for future use.

[0080] Catalyst preparation: 3.20g WCM was placed in a round-bottomed flask of 50mL deionized water, stirred rapidly in a water bath at 60°C for 0.5h, and 3.10g Ni(NO 3 ) 2·6H 2 O, 0.21g La(NO 3 ) 3 ·6H 2 O was dissolved in 50mL water respectivel...

Embodiment 2

[0090] Pretreatment of the waste organosilicon contact body: the same treatment steps as in Example 1, except that the calcination temperature of the pretreated silicon waste contact body was changed to 400° C., and the acid used was replaced by HCl.

[0091] Catalyst preparation: 2.72g WCM was placed in a round-bottomed flask of 50mL deionized water, stirred rapidly in a water bath at 40°C for 0.5h, and 3.10g Ni(NO 3 ) 2 ·6H 2 O, 2.94g Al(NO 3 ) 3 9H 2 O, 0.33g 50wt% Mn(NO 3 ) 2 Dissolve in 50g of water respectively, and prepare 0.2mol / L NaOH solution, then add the above 4 kinds of solutions into the round bottom flask in parallel, use a pH meter to detect the pH value during the dropping process, and control the pH at about 9 After stirring in a water bath at 40°C for 8h, the sample was filtered and washed until the pH was about 7, and the obtained sample was dried at 100°C for 12h. The obtained samples were calcined at 500 °C for 4 h in an air atmosphere with a heati...

Embodiment 3

[0094] Pretreatment of the waste organosilicon contact body: the same treatment steps as in Example 1, except that the calcination temperature of the pretreated organosilicon waste contact body was changed to 700° C., and the acid used was replaced by sulfuric acid.

[0095] Catalyst preparation: 2.72g WCM was placed in a round bottom flask with 50mL deionized water, stirred rapidly in a water bath at 90°C for 0.5h, and 3.10g Ni(NO 3 ) 2 ·6H 2 O, 2.55g Mg(NO 3 ) 2 ·6H 2 O, 0.2gCe(NO 3 ) 3 ·6H 2 Dissolve O in 50g of water respectively, and configure 0.2mol / L KOH solution, then add the above four kinds of solutions into the round-bottomed flask in parallel, use a pH meter to detect the pH value during the dropping process, and control the pH at about 8 After stirring in a water bath at 90° C. for 8 hours, it was filtered and washed until the pH was about 7, and the obtained sample was dried at 100° C. for 12 hours. The obtained sample was calcined at 700°C for 2 hours in...

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Abstract

The invention belongs to the field of methanation catalysis, and relates to an organic silicon waste contact body borne nickel-based methanation catalyst and a preparation method therefor. The catalyst comprises a carrier, an active component, a modifier and an auxiliary agent, wherein the carrier is an organic silicon waste contact body, the modifier is a porous inorganic oxide, the active component is Ni, and the auxiliary agent is a transition metal oxide. By using the porous inorganic oxide modifier in the invention, on one hand, the interacting force between the active component and the carrier is enhanced, and the dispersibility of the active component is improved; on the other hand, the inorganic oxide dispersed in the active component further serves as a physical barrier, and suppresses agglomeration and sintering of Ni particles. The catalyst obtained in the invention is high in catalytic activity, high in anti-carbon deposition and anti-sintering performance and low in cost, and particularly suitable for methanation reaction systems of high-concentration CO.

Description

technical field [0001] The invention belongs to the field of methanation catalysis. Specifically, the invention relates to a nickel-based methanation catalyst supported by organosilicon waste contacts and a preparation method thereof. Background technique [0002] my country is a country rich in coal, poor in oil, and low in gas. Coal occupies a major position in my country's primary energy consumption structure. However, about 80% of the coal consumption is converted directly through combustion, which results in a low utilization rate of heat energy and discharges a large amount of pollutants at the same time. Therefore, it is of great significance to develop high-efficiency, low-carbon and clean coal resource utilization technologies. [0003] The gas obtained by pyrolysis and gasification of coal or biomass mainly contains H 2 and CO, the main components of coke oven gas in the coking industry are also H 2 and CO, these CO-containing mixed gases can be converted and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/83B01J23/847B01J27/22C07C1/04C07C9/04
Inventor 苏发兵刘庆古芳娜
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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