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Method for preparing dual-perovskite type methyl hydride combustion catalyst containing titanium

A double-perovskite, methane combustion technology, applied in fuel, gas fuel, petroleum industry, etc., can solve the rare earth double-layer perovskite oxide rare and other problems

Inactive Publication Date: 2008-10-29
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

But so far, the application of other types of double-layer perovskite composite oxides in the catalytic combustion of methane has not been reported, and the use of rare earth double-layer perovskite oxides as methane combustion catalysts is even rarer.

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  • Method for preparing dual-perovskite type methyl hydride combustion catalyst containing titanium
  • Method for preparing dual-perovskite type methyl hydride combustion catalyst containing titanium
  • Method for preparing dual-perovskite type methyl hydride combustion catalyst containing titanium

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Embodiment Construction

[0016] The present invention will be further described with a specific example below: 10 mL of butyl titanate is added to 10 mL of 95% ethanol that is constantly stirred to produce a white precipitate, to which 0.5 mL of concentrated nitric acid is added dropwise until the precipitate is completely dissolved to obtain Transparent solution; weigh 25.997 grams of lanthanum nitrate and 7.6939 grams of magnesium nitrate, dissolve the above-mentioned lanthanum nitrate and magnesium nitrate in 200 mL of deionized water, then add 25.00 grams of glucose and dissolve in the above-mentioned deionized aqueous solution to make it fully form a complex solution , then stirred at a constant temperature in a water bath at 70°C, evaporated water, and formed a gel within 24 hours, dried the obtained colloid to obtain dry glue, and roasted in air at 500°C, 800°C and 1100°C for 3 hours to obtain La 2 MgTiO 6 catalyst.

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Abstract

The present invention relates to a preparation method of titanium-containing double perovskite type methane combustion catalyst. The process is characterized in that a certain amount of butyl titanate is added into ethanol to produce white sediment; concentrated nitric acid is added until the sediment is totally dissolved and transparent solution is obtained; lanthanum nitrate and magnesium nitrate are weighed and dissolved in the deionized water and a certain amount of dextrose is added, thus completely forming composition solution; then gel is formed by constant-temperature stirring and evaporation; the gel obtained is dried and sintered at the temperature of 500 DEG C, 800 DEG C and 1,100 DEG C in the air for three hours to obtain the catalyst La2MgTiO6. The present invention is characterized in that the Sol-Gel Preparation Method with the dextrose as the complexing agent is adopted and the single-phase double layer perovskite type composite oxide catalyst is prepared at lower temperature. The preparation method is simple and low in cost. The catalyst used in methane catalytic combustion reaction has the characteristics of low initiation temperature and low whole transformation temperature.

Description

technical field [0001] The invention relates to a preparation method of a methane combustion catalyst, in particular to a preparation method of a titanium-containing double perovskite type methane combustion catalyst. Background technique [0002] At present, many large-scale natural gas fields with abundant reserves have been proven across the country, and five of them have reserves exceeding 100 billion cubic meters. The research and development of new technologies and processes using natural gas as fuel combustion has become the focus of attention. At present, the main method of burning natural gas as a fuel is flame combustion, which has many disadvantages, such as low energy efficiency and utilization, and produces a large amount of nitrogen oxides to pollute the environment. Therefore, catalytic combustion is considered to be the most effective way to solve this problem. Compared with the traditional flame combustion reaction, the catalytic combustion reaction has th...

Claims

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Application Information

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IPC IPC(8): B01J23/10C10L3/00
Inventor 胡瑞生杨忠苹白雅琴
Owner INNER MONGOLIA UNIVERSITY
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