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Catalyst irontrioxide for carbon monoxide oxidation reaction and its preparing method

An oxidation reaction, carbon monoxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of poor catalyst recycling performance, high cost, synthesis Complicated technology and other issues, to achieve good recycling performance, low cost, and simple process

Inactive Publication Date: 2005-10-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to propose a catalyst Fe for carbon monoxide oxidation reaction 2 o 3 and preparation method thereof, to overcome defects such as poor recycling performance, complex synthesis technology and high cost in existing catalysts

Method used

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  • Catalyst irontrioxide for carbon monoxide oxidation reaction and its preparing method
  • Catalyst irontrioxide for carbon monoxide oxidation reaction and its preparing method
  • Catalyst irontrioxide for carbon monoxide oxidation reaction and its preparing method

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Add 2.5 mmol ferrous chloride (FeCl 2 ) and ligand 7.5mmol o-phenanthroline (1,10-phenanthroline), then add 50ml of water, and keep the temperature at 10°C for 24 hours; the filtered product is washed twice with water, placed in a vacuum oven and dried at 60°C for 3 hours. 0.05 g of intermediate product β-FeOOH powder was obtained. The aqueous solution that stays after filtering, according to the weight 0.05g (0.56mmol) of gained product, calculates that remaining iron protochloride content is 1.94mmol in the solution, then replenishes 0.56mmol ferrous chloride in the aqueous solution that stays after filtering Iron, continue to react again, let the utilization rate of o-phenanthroline reach 100%. Heat the obtained β-FeOOH powder to 520°C in a vacuum environment and keep it for 16 hours to obtain α-Fe 2 o 3 Products, the vacuum degree is 99.99%.

Embodiment 2

[0020] Add 2.5 mmol ferrous chloride (FeCl 2 ) and ligand 7.5mmol o-phenanthroline (1,10-phenanthroline), then add 50ml of water, and keep the temperature at 15°C for 18 hours; the filtered product is washed twice with water, placed in a vacuum drying oven at 40°C and dried for 5 hours. 0.05 g of intermediate product β-FeOOH powder was obtained. The aqueous solution that stays after filtering, according to the weight 0.05g (0.56mmol) of gained product, calculates that remaining iron protochloride content is 1.94mmol in the solution, then replenishes 0.56mmol ferrous chloride in the aqueous solution that stays after filtering Iron continues to react, allowing the utilization rate of o-phenanthroline to reach 100%. Heat the obtained β-FeOOH powder to 530°C in a vacuum environment for 14 hours to obtain α-Fe 2 o 3 The product, the vacuum degree is 99.99%.

Embodiment 3

[0022] Add 2.5 mmol ferrous chloride (FeCl 2 ) and ligand 7.5mmol o-phenanthroline (1,10-phenanthroline), then add 50ml of water, and keep the temperature at 25°C for 12 hours; the filtered product is washed twice with water, placed in a vacuum drying oven at 80°C and dried for 1 hour. 0.05 g of intermediate product β-FeOOH powder was obtained. The aqueous solution that stays after filtering, utilizes the remaining ferrous chloride content in the detection solution of fluorometer to also be 1.94mmol, then replenishes 0.56mmol ferrous chloride in the aqueous solution that stays after filtering, continues reaction, allows o-dinitrogen The utilization rate of Fei reached 100%. Heat the obtained β-FeOOH powder to 540°C in a vacuum environment for 12 hours to obtain α-Fe 2 o3 The product, the vacuum degree is 99.99%.

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Abstract

The present invention belongs to a gas-phase reaction catalyst and its preparation technique. In particular, it relates to a catalyst Fe2O3 for CO oxidation reaction and its preparation method. The matter phase of said catalyst is alpha-Fe2O3, its microstructure is nano line which contains 10-20 nano mesopore and whose outer diameter is 40-60 nano. Besides, said invention also provides the concrete steps of its preparation technique.

Description

technical field [0001] The invention belongs to the technical field of catalysts used in gas phase reactions and their preparation, in particular to catalyst Fe for carbon monoxide oxidation reactions 2 o 3 and its preparation method. Background technique [0002] The catalytic oxidation process of carbon monoxide gas has high practical value in eliminating environmental pollution, purifying air, closed internal circulation carbon dioxide laser, carbon monoxide gas sensor, carbon monoxide gas mask and the elimination of carbon monoxide in a closed system. Selection of a suitable catalyst is very important for the oxidation of carbon monoxide. Low cost, high conversion efficiency, and excellent recycling performance are considerations for selecting catalysts. There are many kinds of catalysts for the oxidation reaction of carbon monoxide, which can be basically divided into catalysts for low-temperature conversion and high-temperature conversion. Catalysts for low-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/62B01D53/86B01J23/745
CPCY02A50/20
Inventor 谢毅熊宇杰李正全
Owner UNIV OF SCI & TECH OF CHINA
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