Yolk/shell type catalyst and its preparation method and catalytic hydrogen production application
A catalyst, coxcu1-xco2o4 technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve uncontrollable core-shell thickness, complex preparation process, experimental Avoid problems such as operational hazards, and achieve the effects of superior catalytic performance, simple process, and high operating safety factor
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Embodiment 1
[0034] A yolk / shell type Co x Cu 1-x co 2 o 4 @Co y Cu 1-y co 2 o 4 Catalyst, its preparation process is as follows:
[0035] Step S1, take 4.5mmol Co(NO 3 ) 2 ·6H 2 O, 2.25mmol C 6 h 12 N 4 , 1.5mmol Na 3 C 6 h 5 o 7 2H 2 O was dissolved in 35mL of water, stirring continuously until the mixture was dissolved;
[0036] Step S2, move the above mixed solution to a 100mL reactor, react at 100°C for 24h, and cool to room temperature after the reaction;
[0037] Step S3, washing with suction filtration to obtain the intermediate [Co(C 6 h 12 N 4 ) 2 ](NO 3 ) 2 The sediment was dried in a vacuum oven at 40°C;
[0038] Step S4, the obtained sample is heated from room temperature to 200°C at a heating rate of 10°C / min in a muffle furnace, and continuously calcined for 3 hours to obtain a yolk / shell type Co 3 o 4 , cooled to room temperature;
[0039] Step S5, take 0.1g Co 3 o 4 , 1.5mmol CuCl 2 , 0.75mmol C 7 h 5 NaO 3 Dissolve in 20mL deionized water...
Embodiment 2
[0043] A yolk / shell type Co x Cu 1-x co 2 o 4 @Co y Cu 1-y co 2 o 4 Catalyst, its preparation process is as follows:
[0044] Step S1, take 3mmol Co(NO 3 ) 2 ·6H 2 O, 1.5mmol C 6 h 12 N 4 , 1 mmol Na 3 C 6 h 5 o 7 2H 2 O was dissolved in 30mL of water, stirring continuously until the mixture was dissolved;
[0045] Step S2, move the above mixed solution to a 100mL reactor, react at 100°C for 24h, and cool to room temperature after the reaction;
[0046] Step S3, washing with suction filtration to obtain the intermediate [Co(C 6 h 12 N 4 ) 2 ](NO 3 ) 2 The sediment was dried in a vacuum oven at 40°C;
[0047] Step S4, the obtained sample is heated from room temperature to 200°C at a heating rate of 10°C / min in a muffle furnace, and continuously calcined for 3 hours to obtain a yolk / shell type Co 3 o 4 , cooled to room temperature;
[0048] Step S5, take 0.1g Co 3 o4 , 1.5mmol CuCl 2 , 0.75mmol C 7 h 5 NaO 3 Dissolve in 20mL deionized water and k...
Embodiment 3
[0052] A yolk / shell type Co x Cu 1-x co 2 o 4 @Co y Cu 1-y co 2 o 4 Catalyst, its preparation process is as follows:
[0053] Step S1, take 4mmol Co(NO 3 ) 2 ·6H 2 O, 2 mmol C 6 h 12 N 4 , 1.33mmol Na 3 C 6 h 5 o 7 2H 2 O was dissolved in 50mL of water, stirring continuously until the mixture was dissolved;
[0054] Step S2, move the above mixed solution to a 100mL reactor, react at 100°C for 24h, and cool to room temperature after the reaction;
[0055] Step S3, washing with suction filtration to obtain the intermediate [Co(C 6 h 12 N 4 ) 2 ](NO 3 ) 2 The sediment was dried in a vacuum oven at 40°C;
[0056] Step S4, the obtained sample is heated from room temperature to 200°C at a heating rate of 10°C / min in a muffle furnace, and continuously calcined for 3 hours to obtain a yolk / shell type Co 3 o 4 , cooled to room temperature;
[0057] Step S5, take 0.1g Co 3 o 4 , 1.5mmol CuCl 2 , 0.75mmol C 7 h 5 NaO 3 Dissolve in 20mL deionized water an...
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