Catalyst capable of reducing nitric oxides and eliminating soot particle simultaneously and application thereof
A technology of soot particles and nitrogen oxides, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical/physical process, etc., can solve the corrosion reaction pipeline, incomplete secondary, Easy to leak reaction and other problems, to achieve good anti-poisoning performance, good anti-sulfur dioxide, good application effect
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Embodiment 1
[0021] Example 1Cu / C-CeO 2 Catalyst preparation
[0022] Here, Cu / C-CeO with a copper content of 5% (weight percentage) and a weight ratio of activated carbon to cerium oxide of 1:10 2 The preparation process of the catalyst used in the present invention is generally described by way of example. Activated carbon is commercially available coconut shell activated carbon, CeO 2 It is obtained by decomposition of cerium nitrate.
[0023] (1) The activated carbon used was washed with concentrated nitric acid at 70°C for 1 hour, then washed with water until neutral, and finally dried at 110°C for 12 hours for later use;
[0024] (2) The catalyst carrier CeO 2 3.000 gram and above-mentioned 0.3000 gram of activated carbon mechanically stirred and mixed 10 minutes, catalyst active component Cu was impregnated on the carrier with equal volume impregnation method, and the impregnation time was 5 hours, and the precursor of Cu was the nitrate of Cu, then Heat and stir in a water ba...
Embodiment 2
[0026] Example 2Cu / C-CeO 2 Catalyst preparation
[0027] The difference from Example 1 is that
[0028] (2) The catalyst carrier CeO 23.000 gram and above-mentioned 0.3000 gram of activated carbon that have been treated were mechanically stirred and mixed for 10 minutes, and the catalyst active component Cu was impregnated on the carrier with an equal volume impregnation method, and the impregnation time was 3 hours, and the precursor of Cu was the nitrate of Cu, and then Heat and stir in a water bath at 80°C for 3 hours, then dry at 100°C for 10 hours;
[0029] (3) Finally, calcining in a nitrogen atmosphere at 450° C. for 1 hour, and finally pressing the catalyst into tablets and pulverizing it, and then sieving to obtain 60-80 mesh particles for future use.
Embodiment 3
[0030] Embodiment 3Cu / C-CeO 2 Catalyst preparation
[0031] The difference from Example 1 is that
[0032] (2) The catalyst carrier CeO 2 3.000 gram and above-mentioned 0.3000 gram of activated carbon that have been treated were mechanically stirred and mixed for 10 minutes, and the catalyst active component Cu was impregnated on the carrier with an equal volume impregnation method, and the impregnation time was 6 hours, and the precursor of Cu was the nitrate of Cu, and then Heat and stir in a water bath at 75°C for 1 hour, then dry at 105°C for 9 hours;
[0033] (3) Finally, roast at 550° C. in a nitrogen atmosphere for 2 hours, and finally press the catalyst into tablets and pulverize it, and then sieve it to obtain granules of 60 to 80 meshes for use.
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