Iron-cobalt-potassium-loading zirconium dioxide catalyst, preparation method and applications thereof
A technology of zirconium dioxide and iron cobalt potassium, which is applied in the field of selective reduction of carbon dioxide to ethylene, can solve the problems of low conversion rate and poor activity, achieve good catalytic performance, maintain catalytic performance, excellent ethylene selectivity and The effect of carbon dioxide conversion
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Embodiment 1
[0025] Fe 3.33 co 1.67 K 5 / ZrO 2 The catalyst was prepared by a one-step hydrothermal method, and Fe(NO 3 ) 3 9H 2 O, Co(NO 3 ) 3 ·6H 2 O. KNO 3 and ZrO 2 (The mass ratio is 5:2:5:100) were dissolved in deionized water together, and stirred for 12 hours to obtain a mixed precursor solution. Pour the mixed precursor solution into the reaction kettle, hydrothermally react at 140°C for 12h, centrifuge, and dry at 110°C to obtain Fe 3.33 co 1.67 K 5 / ZrO 2 catalyst.
Embodiment 2
[0031] Preparation of FeCoK with total Fe and Co loadings of 0, 1, 3, 5, 7, 9 wt% 5 / ZrO 2 catalyst. In the same method as in Example 1, different mass ratios of Fe(NO 3 ) 3 9H 2 O and Co(NO 3 ) 3 ·6H 2 O dissolved.
Embodiment 3
[0033]Preparation of FeCoK / ZrO with K loadings of 0, 1, 3, 5, 7, 10 wt% 2 catalyst. In the same way as in Example 1, change KNO 3 the dissolution quality.
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