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Methane carbon dioxide reforming catalyst and preparation method thereof

A reforming catalyst, carbon dioxide technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of weakening catalyst carbon deposition and achieve the cost of raw materials Low cost, simple preparation method and high stability

Pending Publication Date: 2022-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Perovskite oxides (e.g. LaNiO 3 , La 0.9 Ce 0.1 NiO 3 ) is used as a catalyst for methane carbon dioxide reforming reaction, which shows excellent catalytic performance, and the carbon deposition phenomenon of the catalyst is relatively weakened during the reaction process, especially in the form of alkali metal or alkaline earth metal doped in its crystal structure. The ability to resist carbon deposition is more obvious, but the anti-carbon deposition ability of perovskite catalysts still has a high room for improvement

Method used

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  • Methane carbon dioxide reforming catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 0.12mol of citric acid and pour it into deionized water, mix well to form a solution. Take 0.1 mol of lanthanum nitrate and 0.1 mol of nickel nitrate and dissolve them in deionized water, then drop them into the aqueous solution of citric acid, and mix well to form a sol. Afterwards, the sol was heated to 80° C. to evaporate water, so that it gradually turned into a gel. Afterwards, the gel was dried at 80°C. The solid obtained by drying is roasted at a temperature of 900°C to obtain LaNiO 3 .

[0026] Get 0.073g of sodium nitrate and dissolve it in deionized water, mix the sodium nitrate solution with 20g of the obtained LaNiO 3 Mix to obtain a suspension, and rotate the suspension on a rotary evaporator to slowly evaporate the water to dryness, so that the alkali metal can be evenly dispersed in the LaNiO 3 surface. The solid obtained after evaporation to dryness was dried at 120°C and calcined at 450°C to obtain Na / LaNiO 3 catalyst.

[0027] The mass cont...

Embodiment 2

[0029] Take 0.12mol of citric acid and pour it into deionized water, mix well to form a solution. Take 0.09mol of lanthanum nitrate, 0.01mol of cerium nitrate, and 0.1mol of nickel nitrate and dissolve them in deionized water, then drop them into the aqueous solution of citric acid, and mix well to form a sol. Afterwards, the sol was heated to 80° C. to evaporate water, so that it gradually turned into a gel. Afterwards, the gel was dried at 90°C. The solid obtained by drying is roasted at a temperature of 800°C to obtain La 0.9 Ce 0.1 NiO 3 .

[0030] Get 0.072g Potassium Nitrate and be dissolved in the middle of deionized water, Potassium Nitrate solution and 20g obtained La 0.9 Ce 0.1 NiO 3 Mix to obtain a suspension, and carry out rotary evaporation on a rotary evaporator, so that the water is slowly evaporated to dryness, so that the potassium ions can be evenly dispersed into the La 0.9 Ce 0.1 NiO 3 surface. The solid obtained after evaporation to dryness was ...

Embodiment 3

[0033] Take 0.12mol of citric acid and pour it into deionized water, mix well to form a solution. Take 0.07mol of lanthanum nitrate, 0.03mol of cerium nitrate, and 0.1mol of nickel nitrate and dissolve them in deionized water, then drop them into the aqueous solution of citric acid, and mix well to form a sol. Afterwards, the sol was heated to 80° C. to evaporate water, so that it gradually turned into a gel. Afterwards, the gel was dried at 100°C. The solid obtained by drying is roasted at a temperature of 600°C to obtain La 0.7 Ce 0.3 NiO 3 .

[0034] Get 0.37g magnesium nitrate and dissolve in the middle of the deionized water, the magnesium nitrate solution and the La obtained by 20g 0.7 Ce 0.3 NiO 3Mix to obtain a suspension, and carry out rotary evaporation on a rotary evaporator, so that the water is slowly evaporated to dryness, so that the magnesium ions can be evenly dispersed into the La 0.7 Ce 0.3 NiO 3 surface. The solid obtained after evaporating to dr...

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Abstract

The invention relates to a methane and carbon dioxide reforming catalyst and a preparation method thereof, and belongs to the technical field of reforming catalysts. The structure of the methane and carbon dioxide reforming catalyst disclosed by the invention is A / LaxCe1-xNiO3. Wherein A is alkali metal or alkaline earth metal, 0 < = x < = 1. The methane and carbon dioxide reforming catalyst disclosed by the invention can be used for effectively avoiding generation of carbon deposition in a methane and carbon dioxide reaction process, and meanwhile, the stability is relatively high, and inactivation is effectively avoided; the invention also provides a simple and feasible preparation method.

Description

technical field [0001] The invention relates to a methane carbon dioxide reforming catalyst and a preparation method thereof, belonging to the technical field of reforming catalysts. Background technique [0002] carbon dioxide (CO 2 ) and methane (CH 4 ) as a greenhouse gas is generally considered to be the culprit for the current problem of the greenhouse effect. Global warming can be slowed by reducing dependence on fossil fuels and minimizing greenhouse gas emissions into the environment. Hydrogen is one of the most promising alternative energy sources due to its ability to reduce NO x and CO x The advantage of emissions, and that water is a by-product of combustion. Carbon dioxide reforming of methane is an important method for industrial hydrogen production, and it is also an effective way to realize the rational utilization of two greenhouse gases, carbon dioxide and methane. Carbon dioxide reforming of methane can produce synthesis gas with a suitable H / C ratio...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J37/03B01J37/08C01B3/40
CPCB01J23/83B01J23/002B01J37/036B01J37/088C01B3/40B01J2523/00C01B2203/0238C01B2203/1058C01B2203/1241B01J2523/3706B01J2523/3712B01J2523/847B01J2523/12B01J2523/13B01J2523/22B01J2523/25B01J2523/24Y02P20/52
Inventor 王民余汉涛赵庆鲁白志敏王昊姜建波薛红霞
Owner CHINA PETROLEUM & CHEM CORP
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