Method for preparing methyl hydride combustion catalyst

A methane combustion and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve the effects of high thermal stability, low cost and simple operation

Inactive Publication Date: 2008-10-29
INNER MONGOLIA UNIVERSITY
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  • Method for preparing methyl hydride combustion catalyst
  • Method for preparing methyl hydride combustion catalyst
  • Method for preparing methyl hydride combustion catalyst

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[0019] The present invention will be further described with a specific example below: take by weighing 3.56g Sn powder and be dissolved in 12mL mass fraction and be 32.5% nitric acid, take by weighing 6.30g citric acid and be mixed with the aqueous solution of 0.5mol / L, both mix, in Stir and reflux at 100°C for 2 hours; weigh 25.98g La(NO 3 ) 3 ·6H 2 O and 10.74g mass percent are 50% Mn(NO 3 ) 2The aqueous solution was mixed and dissolved in deionized water to make its concentration 0.5mol / L, and 18.90g of citric acid was weighed to prepare a 0.5mol / L aqueous solution, and the La(NO 3 ) 3 and Mn(NO 3 ) 2 The mixed aqueous solution was added to the citric acid solution to form a metal ion citric acid complex solution; the complex solution was added to the above-mentioned tin-containing citric acid solution, continued to stir and reflux for 4 hours, and transferred to a beaker in a constant temperature water bath at 70°C to evaporate into a wet The gel is dried in an infr...

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Abstract

The present invention discloses a preparation method of methane combustion catalyst. The major preparation process includes: Sn powder is dissolved in nitric acid and added into citric acid solution for stirring and refluxing at the temperature of 90 DEG C to 100 DEG C; La(NO3)3 and Mn(NO3)2 are weighed and confected into metal-ion citric acid complexing solution; the complexing solution is added into the stannum-containing citric acid solution for further stirring and refluxing; the solution is transferred to a beaker for constant-temperature water bath at the temperature of 70 DEG C and evaporation so as to become wet gel and the wet gel is placed in an infrared drying box and dried into dry gel; after grinding, decomposition by a muffle furnace and sintering by a high-temperature furnace, LaMn0.8O3/La2Sn2O7 catalyst is obtained. The preparation method is simple and the prepared catalyst has the characteristics of novel structure, stability, low cost, low methane initiation temperature and low whole transformation temperature.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a methane combustion catalyst. Background technique [0002] With the increasing demand for energy around the world, the requirements for safe, efficient and low-pollution combustion of natural gas are very important. The traditional natural gas combustion method is flame combustion, and its combustion temperature can reach 1773K ~ 2273K. At this high temperature, nitrogen in the air can be converted into NOx, causing serious pollution to the environment. Compared with the traditional flame combustion reaction, the catalytic combustion reaction of natural gas has the characteristics of low ignition temperature, high energy utilization rate, and environmental friendliness. The main component of natural gas is methane. The successful development and utilization of methane catalytic combustion materials is of great significance to solve current environme...

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Application Information

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IPC IPC(8): B01J23/34B01J23/10B01J23/14C10L3/00
Inventor 胡瑞生戴莹莹白雅琴
Owner INNER MONGOLIA UNIVERSITY
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