A kind of photocatalytic Fischer-Tropsch synthesis method and catalyst used
A technology of Tropsch synthesis and catalytic cost, which is applied in the field of photocatalytic Fischer-Tropsch synthesis using supported metal catalysts, which can solve the problems of high operating temperature and complex catalyst preparation process, and achieve the effects of high reaction rate, easy recovery and simple operation
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Embodiment 1
[0020] 0.72gFe(NO 3 ) 3 9H 2 After O was dissolved in 20 mL of distilled water, 1.9 g of graphene was dispersed in it, stirred at room temperature for 12 h, evaporated to dryness, and then dried at 110 °C for 12 h, and finally placed in a tube furnace at 500 °C with H 2 / Ar (volume ratio is 5:95) reduction for 5h, the gas flow rate is 20mL / min, can get 2g metal Fe catalyst with a loading capacity of 5wt% graphene, wherein the particle size of Fe nanoparticles is 5nm.
[0021] Disperse 2g of the above catalyst in an appropriate amount of water under stirring conditions to form a suspension, then transfer it to a high-pressure reactor with a quartz window to seal it, and after purging with an inert gas, fill it with 2.0MPa H 2 , CO(H at 1.0MPa 2 The molar ratio to CO is 2), under stirring conditions, heated to 150°C, at a strength of 0.5W / cm 2 React under the irradiation of artificial light source simulating sunlight for 8 hours. Measure the gas pressure in the system, calc...
Embodiment 2
[0023] 0.35gCo(NO 3 ) 2 ·6H 2 After O was dissolved in 20 mL of distilled water, 0.93 g of silicon carbide was dispersed in it, stirred at room temperature for 12 h, evaporated to dryness, and then dried at 110 °C for 12 h, and finally placed in a tube furnace at 500 °C with H 2 / Ar (volume ratio: 5:95) reduction for 5 h, the gas flow rate is 20 mL / min, 1 g of metal Co catalyst with a loading capacity of 7 wt % silicon carbide can be obtained, and the particle size of Co nanoparticles is 14 nm.
[0024] Disperse 1 g of the above catalyst in an appropriate amount of water under stirring conditions to form a suspension, then transfer it to a high-pressure reactor with a quartz window to seal it, and after purging with an inert gas, fill it with H 2 1.8MPa, CO1.2MPa(H 2 The molar ratio to CO is 1.5), under stirring conditions, heated to 200°C, under the light intensity of 3W / cm 2 The reaction was carried out under the irradiation of a mercury lamp for 15 hours. Measure the g...
Embodiment 3
[0026] 0.02gNi(NO 3 ) 2 ·6H 2 After O was dissolved in 20 mL of distilled water, 0.016 g of alumina was dispersed in it, stirred at room temperature for 12 h, evaporated to dryness, and then dried at 110 °C for 12 h, and finally placed in a tube furnace at 500 °C with H 2 / Ar (volume ratio: 5:95) reduction for 5h, gas flow rate is 20mL / min, can get 0.02g loading capacity of 20wt% aluminum oxide supported metal Ni catalyst, wherein the particle size of Ni nanoparticles is 30nm.
[0027] Disperse 0.02g of the above-mentioned catalyst in an appropriate amount of water under stirring conditions to form a suspension, then transfer it to a high-pressure reactor with a quartz window to seal it, and after purging with an inert gas, fill it with H 2 4.0MPa, CO1.5MPa(H 2 The molar ratio to CO is about 2.7), under stirring conditions, heated to 220 ° C, under the light intensity of 5W / cm 2 The reaction was carried out under the irradiation of a mercury lamp for 24 hours. Measure the...
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