Preparation method of CO catalytic material

A technology of catalytic materials and co-catalysts, applied in the direction of catalyst activation/preparation, chemical instruments and methods, separation methods, etc., can solve the problems of unavailable gold-loaded catalytic materials, inability to play an effective role, and difficult catalytic materials. Achieve the effect of simple process, good strength and high feasibility

Inactive Publication Date: 2012-05-30
NO 63971 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the pretreatment is more complicated, and at room temperature, it cannot play an effective role
However, if gold is supported on a single carrier Al 2 o 3 In general, supported gold catalytic materials with low-temperature activity are generally not available. If gold is supported on a single transition metal oxide, the prepared catalytic materials generally have considerable difficulties in the process of industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Soak 1.0 g of spherical alumina in an aqueous solution of cobalt nitrate of a given concentration, immerse in an equal volume, keep for 3 hours, then dry at 110°C for 6 hours, and roast at 600°C for 1 hour to obtain a cocatalyst-containing alumina composite carrier. Take 0.5mL of 0.1M chloroauric acid solution, add it to distilled water, and wash with 0.5M Na 2 CO 3 The solution was adjusted to pH 7.0. Heating and maintaining the system temperature at 70°C. Take 1.0 g of the formed composite oxide carrier, add it to the solution, and then pass it into steam, keep it in the steam environment for 10 hours, age, filter, wash, dry at 90°C for 12 hours, and then bake at 400°C, That is, Au:Co:Al can be obtained 2 o 3 Catalytic materials in a weight ratio of 1:10:100. The finished product is in the shape of small balls, uniform black, and the strength is greater than 60N / piece.

[0021] The raw gas composition is CO: 1.5%, O 2 : 21%, N 2 : 78.5% (volume percentage), g...

Embodiment 2

[0023] Take 1.0 mL of 0.1M chloroauric acid solution, add it into distilled water, and adjust the pH value to 7.5 with 0.5M ammonia solution under strong stirring. Heating and maintaining the system temperature at 70°C. Take 1.0 g of the composite carrier described in Example 1, add it to the solution, and then pass it into steam, keep it in the steam environment for 10 hours, age, filter, wash, dry at 90°C for 12 hours, and then bake at 400°C. That is, Au:Co:Al can be obtained 2 o 3 Catalytic materials in a weight ratio of 1:10:100. The finished product is in the form of small balls with a uniform black color. .

[0024] When using the feed gas and gas volume space velocity described in Example 1, the catalytic material catalyzes that CO is completely converted into CO 2 The allowable minimum reaction temperature is below 38°C.

Embodiment 3

[0026] Take 1.0 mL of 0.1 M chloroauric acid solution, add it into distilled water, and adjust the pH value to 7.5 with 4 g of urea solution under vigorous stirring. Heating and maintaining the system temperature at 80°C. Iron-containing composite carrier Al prepared as described in Example 1 2 o 3 1.0g was added to the solution, and then steamed, kept in the steam environment for 6 hours, aged, filtered, washed, dried at 90°C for 12 hours, and then calcined at 400°C to obtain Au:Fe: al 2 o 3 Au / NiO with a weight ratio of 1:10:50 x / Al 2 o 3 catalytic material. The finished product is in the shape of small balls and is uniformly iron red.

[0027] When using the feed gas and gas volume space velocity described in Example 1, the catalytic material catalyzes that CO is completely converted into CO 2 The allowable minimum reaction temperature is below -30°C.

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Abstract

A catalyst for removing CO is composed of Au as active component, the co-catalyst chosen from Co, Fe, Mn, Cu, Zn, Ti, Sn, Mg, Li, Ce and Zr, and the porous carrier chosen from alumina, silicon oxide, molecular sieve, cellular ceramics and iron wire mesh. Its preparing process is also disclosed.

Description

technical field [0001] The invention is a new preparation method, and the corresponding catalytic material prepared by the preparation method can purify CO in the environment at low temperature or even normal temperature. Its application scope includes anti-CO coal mine self-rescuer, high-rise building escape mask, or other devices used to protect CO, CO 2 Lasers, CO sensors, and CO purification in some special or closed environments. Background technique [0002] The CO purification catalyst material used for a long time in the past is Hopcalite (Hopcalite agent). It was jointly invented by Johns Hopkins University and the University of California in 1919. It is a catalytic material made of active manganese dioxide and copper oxide in a certain proportion. Usually the preparation method of Hopcalite catalytic material is sulfuric acid method. The first step is to make active manganese dioxide, which is to mix manganese sulfate fine powder (below 70 mesh) with a small amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/52B01J37/02B01J32/00B01J35/10B01J23/66B01D53/62
Inventor 王东辉史喜成程代云董同欣
Owner NO 63971 TROOPS PLA
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