Cobalt-load cerium manganese oxide catalyst and preparation method thereof
A technology of oxides and catalysts, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of pollutant enrichment, etc., and achieve simple and excellent processes Oxygen storage and release capacity, low cost effect
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[0015] Example 1:
[0016] Weigh 1.48 g of manganese chloride and 6.51 g of cerium nitrate and dissolve them in 100 ml of deionized water to form solution 1. 1.52 g of potassium permanganate was weighed and dissolved in 60 ml of deionized water to form solution 2. Add solution 2 dropwise to solution 1, continue stirring at room temperature for 24 hours, filter, wash, and dry the obtained solid in an oven at 50 °C overnight, and then calcinate at 300 °C for 3 hours to obtain cerium manganese oxide, denoted as Ce1- Mn-O x .
[0017] Weigh 0.120 g of cobalt nitrate and dissolve it in 2.80 ml of deionized water to form a cobalt solution, then add the cobalt solution dropwise to 1.00 g of Ce1-Mn-O x After immersion in an equal volume for 24 hours, it was placed in an oven at 60-80 °C to dry overnight, and then calcined at 300 °C for 3 hours to obtain a cobalt-supported cerium-manganese oxide catalyst, denoted as Co / Ce1-Mn-O x .
[0018] Weigh 0.200 g of the catalyst obtained ...
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[0019] Example 2:
[0020] Compared with Example 1, the difference is that the quality of manganese chloride is 1.98 grams, the quality of cerous nitrate is 4.34 grams, and other material consumption and operating conditions are the same as Example 1, to obtain Co / Ce2-Mn-O x catalyst. The results of the activity test are: the purification rate reaches 92%, and the conversion rate remains above 70% within 290 minutes.
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[0021] Example 3:
[0022] Compared with Example 1, the difference is that the quality of manganese chloride is 2.23 grams, the quality of cerous nitrate is 3.26 grams, other material consumption and operating conditions are the same as Example 1, and obtain Co / Ce3-Mn-O x catalyst. The results of the activity test are: the purification rate reaches 96%, and the conversion rate remains above 70% within 480 minutes.
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