A thermal reduction of CO using a graphene-based catalyst 2 The method of synthesizing co
An alkenyl catalyst, CO2 technology, applied in the field of thermal catalysis
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Embodiment 1
[0019] WO 3 Preparation: Weigh 3g of sodium tungstate and 0.01g of cetyltrimethylammonium bromide (CTAB), and dissolve them in 10mL of deionized water. After stirring for 0.5 h, the pH of the solution was adjusted to 0.3 with 3 mol / L HCl. Continue to stir for 1 hour, transfer to a reaction kettle filled with 80%, and place in a constant temperature drying oven at 120° C. for 24 hours. After centrifugation, the obtained precipitate was washed repeatedly with distilled water and acetone, and dried at 60°C for 10 hours. Finally, it was burned in a muffle furnace at 300°C for 3 hours to obtain WO 3 powder.
[0020] The specific process for preparing graphite oxide by the Hummers method is as follows: The preparation method of graphene composite titanium dioxide-based nanomaterials is as follows: assemble a 1L beaker in an ice-water bath, and add 115mL of concentrated sulfuric acid. A solid mixture of 5 g flake graphite and 2.5 g sodium nitrate was added under continuous stirri...
Embodiment 2
[0023] Preparation of ZnO: Weigh 3.67g of zinc nitrate and 0.1g of cetyl ammonium bromide solution in 50ml of deionized water, then add 50ml of sodium carbonate solution (0.25mol / L). Stirring was continued for 2h to fully react the two solutions. Centrifuge, wash, and dry at 60°C to obtain basic zinc carbonate. Finally, the ZnO samples were calcined in a muffle furnace at 600°C for 2.5h.
[0024] All the other experimental conditions and steps are the same as in Example 1.
[0025] A brief description of the accompanying drawings is given below:
[0026] figure 1 Indicating the successful preparation of WO 3 , graphene and WO 3 / graphene catalyst.
[0027] figure 2 Show pure WO 3 Thermal catalytic reduction of CO 2 The activity of synthesizing CO is very low, only 0.155 μmol CO is produced. After 32 hours of reaction, pure graphene produced 1.03 μmol of CO. For compounded samples, 20% WO 3 / graphene exhibited the highest thermocatalytic activity, with 4.53 μmol of...
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