Application of double perovskite type oxide oxygen carrier in hydrogen production of chemical chain and preparation method
A double perovskite and oxide technology, applied in the field of chemical chain hydrogen production, can solve the problems of low dispersion of metal oxides, large pressure drop in the reaction bed, small pore size of oxygen carriers, etc., to achieve rich structural defects and Oxygen vacancies, improved catalytic performance, and simple preparation methods
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[0019] Example 1
[0020] Take 16g Fe(NO 3 ) 3 ·9H 2 O, 11.5gNi(NO 3 ) 2 ·6H 2 Put O into a 500mL beaker, where the molar ratio of Fe to Ni is 1 / 1, add 100mL of distilled water, and then place the beaker in a water bath at 80°C at a stirring speed of 400rpm and stir until all is dissolved. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100 mL of distilled water, and stir until all is dissolved. Then, the lanthanum nitrate solution was added dropwise to the mixed solution of ferric nitrate and nickel nitrate, while stirring. Take 40g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 1.2:1, put it in a 100mL beaker and stir until all is dissolved. After the above mixed solution is stirred for 30 minutes, slowly add the citric acid solution while adding dropwise While stirring. After stirring for 5 hours, the brown solution was dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110°C and dried o...
Example Embodiment
[0021] Example 2
[0022] Take 16g Fe(NO 3 ) 3 ·9H 2 O, 11.5gNi(NO 3 ) 2 ·6H 2 Put O into a 500mL beaker, where the molar ratio of Fe to Ni is 1 / 1, add 100mL of distilled water, and then place the beaker in a water bath at 80°C at a stirring speed of 400rpm and stir until all is dissolved. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100 mL of distilled water, and stir until all is dissolved. Then, the lanthanum nitrate solution was added dropwise to the mixed solution of ferric nitrate and nickel nitrate, while stirring. Take 67g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 1.2:1, put it in a 100mL beaker and stir until all is dissolved. After the above mixed solution is stirred for 30 minutes, slowly add the citric acid solution while adding dropwise While stirring. After stirring for 5 hours, the brown solution was dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110°C and dried o...
Example Embodiment
[0023] Example 3
[0024] Take 16g Fe(NO 3 ) 3 ·9H 2 O, 11.5gNi(NO 3 ) 2 ·6H 2 Put O into a 500mL beaker, where the molar ratio of Fe to Ni is 1 / 1, add 100mL of distilled water, and then place the beaker in a water bath at 80°C at a stirring speed of 400rpm and stir until all is dissolved. Take 34.3g La(NO 3 ) 3 ·6H 2 O, put it in a beaker with 100 mL of distilled water, and stir until all is dissolved. Then, the lanthanum nitrate solution was added dropwise to the mixed solution of ferric nitrate and nickel nitrate, while stirring. Take 100g of citric acid, the molar ratio of citric acid to the total amount of metal ions is 3:1, put it in a 100mL beaker and stir until all is dissolved. After the above mixed solution is stirred for 30 minutes, slowly add the citric acid solution while adding dropwise While stirring. After stirring for 5 hours, the brown solution was dehydrated and turned into a viscous gel. The gel was taken out and placed in a drying oven at 110°C and dried ov...
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