Difunctional ceramic membrane for gas in-situ dry reforming and preparation method thereof
A dual-function, ceramic membrane technology, applied in the field of electrochemistry, can solve problems such as high energy consumption, achieve the effects of improving conversion efficiency, reducing cost and energy consumption, and preventing escape
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[0056] Example 1
[0057] In-situ dry reforming of carbon dioxide gas
[0058] 1. Preparation of bifunctional ceramic membranes
[0059] (1) Dissolve the nitrate precursor of perovskite oxide containing La, Sr, Fe, Ni ions in water, then add citric acid and EDTA to the solution, and adjust the pH value to 7-8 with ammonia water, and then stir until the solution is converted into a sol-gel state, and dried at 160-200°C for 4-6 hours to obtain a black precursor;
[0060] (2) calcining the obtained black precursor in air at 900-1000° C. for 3.5-4.5 hours to obtain catalyst La 0.7 Sr 0.3 Fe 0.8 Ni 0.2 O 3-δ (LSFN) powder;
[0061] (3) Mixing LSFN powder and SDC in a ratio of 3:7, and pressing the mixed LSFN-SDC powder into a shape, and calcining at a high temperature of 1100 °C to obtain a bifunctional ceramic membrane substrate;
[0062] (4) Cover the substrate with a layer of alkali metal carbonate (according to the ratio of the volume ratio of lithium carbonate and pota...
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