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A kind of preparation method of the catalyst that is used for methane carbon dioxide reforming to produce synthesis gas

A carbon dioxide and catalyst technology, applied in the field of catalyst preparation, can solve the problems of difficult process control, complex preparation process, complex preparation process, etc., and achieve the effects of high conversion rate, high catalytic activity and simple process

Inactive Publication Date: 2019-09-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of the catalyst is complicated, the process is not easy to control, and the activity still declines after being stable for 200 hours
[0006] Chinese patent CN 104383927 A discloses a method for preparing a catalyst for dry reforming of methane to synthesis gas. Modified activated carbon is made into an electrode, and the multi-metal active material Co-Ni-Zr-K-Mg Loaded on the surface of the carrier to prepare the methane dry reforming catalyst Co-Ni-Zr-K-Mg / AC, this method requires activated carbon to be made into an electrode, and the preparation process is complicated

Method used

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  • A kind of preparation method of the catalyst that is used for methane carbon dioxide reforming to produce synthesis gas
  • A kind of preparation method of the catalyst that is used for methane carbon dioxide reforming to produce synthesis gas
  • A kind of preparation method of the catalyst that is used for methane carbon dioxide reforming to produce synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Weigh 25.5798g Na 2 SiO 3 9H 2 O is added in the beaker that 84.4182g distilled water is housed, ultrasonic dissolves;

[0034] (2) then the analytically pure concentrated nitric acid (HNO 3 The content is 65%~68%, the same below) and distilled water are diluted by volume ratio 1:4, and then slowly dripped into the solution obtained in step (1), and magnetically stirred while adding (nitric acid is added to Na 2 SiO 3 The process in solution is to generate H 2 SiO 3 gel process), to solution pH=6;

[0035] (3) Weigh 2.9079gNi(NO 3 ) 2 ·6H 2 O is added in the beaker that 15.3711g distilled water is housed, ultrasonic dissolves;

[0036] (4) Slowly add the solution prepared in step (3) dropwise into the solution prepared in step (2), and magnetically stir while adding;

[0037] (5) Analytical pure concentrated ammonia water (NH 3 The content is 25%-28%, the same below) is diluted with distilled water at a volume ratio of 1:5, and 6ml of diluted ammonia wat...

Embodiment 2

[0050] (1) Weigh 27.0009gNa 2 SiO 3 9H 2 O is added in the beaker that 89.1081g distilled water is housed, ultrasonically dissolves;

[0051] (2) Dilute the analytically pure concentrated nitric acid and distilled water at a volume ratio of 1:4 and slowly drop them into the solution obtained in step (1), and magnetically stir while adding until the solution pH=6;

[0052] (3) Weigh 1.4540gNi(NO 3 ) 2 ·6H 2 O is added in the beaker that 7.6856g distilled water is housed, ultrasonic dissolves;

[0053] (4) Slowly add the solution prepared in step (3) dropwise into the solution prepared in step (2), and magnetically stir while adding;

[0054] (5) Dilute the analytically pure concentrated ammonia water and distilled water at a volume ratio of 1:5, slowly drip 3ml of diluted ammonia water into the solution prepared in step (4), and magnetically stir while dripping;

[0055] (6) Seal with plastic wrap, age at 90°C for 24h, filter, wash, dry the obtained solid at 180°C for 24...

Embodiment 3

[0059] (1) Weigh 11.3688gNa 2 SiO 3 9H 2 O is added in the beaker that 37.5192g distilled water is housed, ultrasonic dissolves;

[0060] (2) Slowly drop analytically pure concentrated nitric acid and distilled water into the solution obtained in step (1) after diluting the concentrated nitric acid and distilled water at a volume ratio of 1:4, and magnetically stir while adding until the solution pH=6;

[0061] (3) Weigh 2.9079gNi(NO 3 ) 2 ·6H 2 O is added in the beaker that 15.3711g distilled water is housed, ultrasonic dissolves;

[0062] (4) Slowly add the solution prepared in step (3) dropwise into the solution prepared in step (2), and magnetically stir while adding;

[0063] (5) Dilute the analytically pure concentrated ammonia water and distilled water at a volume ratio of 1:5, slowly drip 6ml of diluted ammonia water into the solution prepared in step (4), and magnetically stir while dripping;

[0064] (6) Seal with plastic wrap, age at 90°C for 24h, filter, was...

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Abstract

The invention provides a preparation method of a catalyst for preparing a synthesis gas through carbon dioxide reforming of methane. The catalyst is prepared by executing simple steps of precipitating, ageing, washing, drying, grinding, reducing and the like employing nickel as an active component, silicon dioxide as a carrier, and nickel nitrate, sodium silicate and dilute nitric acid as raw materials. The method is simple in process, the preparation process is easy to operate, high-temperature calcinations is not needed and a noble metal does not need to be loaded, so that the production cost is reduced. The prepared catalyst is high in catalytic activity and good in stability, accumulated carbon on active particles in the reaction process is basically eliminated, the conversion rates of CH4 and CO2 are greater than 90%, and the catalyst can be stable for 700h and is free of obvious inactivation.

Description

technical field [0001] The invention relates to the technical field of catalyst synthesis, in particular to a method for preparing a catalyst used for reforming methane and carbon dioxide to produce synthesis gas. Background technique [0002] my country has abundant natural gas resources and huge reserves. According to data from the Ministry of Land and Resources in 2014, my country's conventional natural gas resources are 68 trillion cubic meters, and a total of 12 trillion cubic meters have been proven. Not only that, methane, the main component of natural gas, can also be obtained on a large scale through anaerobic fermentation of abundant biomass. Natural gas occupies an important position in my country's energy structure. According to data from the National Bureau of Statistics, its proportion in total energy consumption increased from 4.0% in 2010 to 5.1% in 2013. As a high-quality and efficient clean energy and chemical raw material, natural gas is currently mainly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755
Inventor 李远志黄辉毛明杨陈俭杨懿
Owner WUHAN UNIV OF TECH