Application and preparation of perovskite structure composite oxide in chemical looping circulation hydrogen production
A technology of perovskite structure and composite oxide, applied in the field of chemical chain hydrogen production, can solve the problems of high reaction temperature, limited oxygen carrying rate, low cyclic reactivity, etc. simple method effect
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Embodiment 1
[0018] Take 23g Ni(NO 3 ) 2 ·6H 2 O, put it into a 500mL beaker, add 100mL of distilled water, and then place the beaker in a water bath at 80°C with a stirring speed of 400rpm. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100mL distilled water, stir until it is completely dissolved. Then add the lanthanum nitrate solution dropwise into the nickel nitrate solution, and stir while adding dropwise. Take 40g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 1.2:1, put it into a 100mL beaker and stir until it is completely dissolved. After the above mixed solution is stirred for 30 minutes, slowly add the citric acid solution, while adding While stirring. After stirring for 5 hours, the solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried perovskite precursor, place it in a muffle furnace, raise the temperature from room...
Embodiment 2
[0020] Take 23g Ni(NO 3 ) 2 ·6H 2 O, put it into a 500mL beaker, add 100mL of distilled water, and then place the beaker in a water bath at 80°C with a stirring speed of 400rpm. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100mL distilled water, stir until it is completely dissolved. Then add the lanthanum nitrate solution dropwise into the nickel nitrate solution, and stir while adding dropwise. Take 67g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 2:1, put it into a 100mL beaker and stir until it is completely dissolved. After the above mixed solution is stirred for 30 minutes, slowly add the citric acid solution, while adding While stirring. After stirring for 5 hours, the solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried perovskite precursor, place it in a muffle furnace, raise the temperature from room t...
Embodiment 3
[0022] Take 23g Ni(NO 3 ) 2 ·6H 2O, put it into a 500mL beaker, add 100mL of distilled water, and then place the beaker in a water bath at 80°C with a stirring speed of 400rpm. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100mL distilled water, stir until it is completely dissolved. Then add the lanthanum nitrate solution dropwise into the nickel nitrate solution, and stir while adding dropwise. Take 100g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 3:1, put it into a 100mL beaker and stir until completely dissolved, after stirring the above mixed solution for 30 minutes, slowly add the citric acid solution, dropwise While stirring. After stirring for 5 hours, the solution had been dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110° C. to dry overnight. Then take out the dried perovskite precursor, place it in a muffle furnace, raise the temperature from room temperature t...
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