Method for removing CO
A removal and substrate technology, applied in the field of CO removal, can solve the problems of reduced utilization of active metals, low catalyst reactivity, and low treatment efficiency
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[0016] According to the present invention, in the polymer containing imidazole side groups, the molecular chain of the polymer includes repeating structural units, and each repeating unit may include an imidazole group to form a side chain of the entire molecule. In the present invention, the polymer containing imidazole side groups is not particularly limited, as long as the carbon support can be formed by carbonization. Preferably, the polymer containing imidazole side groups is selected from polyvinylimidazole or a copolymer of vinylimidazole and divinylbenzene. According to one embodiment, the polymer containing imidazole side groups is polyvinylimidazole. The polyvinylimidazole can be prepared by methods well known in the art, and can also be obtained commercially. Generally, the degree of polymerization (Xn) of the polyvinylimidazole can be 1000-10000, for example, with AIBN as the initiator and toluene as the solvent, react in a hydrothermal kettle at 60°C to obtain a ...
preparation example 1
[0038] Take 20 mL of methanol solution with polyvinylimidazole (Xn=2000) concentration of 0.05 g / mL, and 10 mL of methanol solution with nickel nitrate concentration of 0.05 g / mL; into the methanol solution of polyvinylimidazole, and then kept stirring for 4 hours to form a precipitate; the stirred product was filtered, and the obtained solid was washed with methanol for 3 times, and then vacuum-dried at 80°C for 4 hours to obtain a solid powder; Calcined at 400°C for 4h in a nitrogen atmosphere to obtain a N-Ni / C-1 matrix with a nickel loading of 54wt%.
[0039] Take 50g of the N-Ni / C-1 substrate, and treat it with hydrogen at 450°C for 8 hours, and place the reduced substrate in 500mL Ru 3+ Aqueous solution (Ru 3+ 1×10 -4 g / mL ruthenium nitrate aqueous solution) for 24 hours, through adsorption and displacement reaction, Ru is loaded on the substrate, filtered, and washed with deionized water until nearly neutral, to obtain a loaded catalyst containing 0.1wt% Ru. Stored i...
preparation example 2
[0041] Take 20 mL of methanol solution with polyvinylimidazole (Xn=2000) concentration of 0.05 g / mL, and 10 mL of methanol solution with nickel nitrate concentration of 0.05 g / mL; into the methanol solution of polyvinylimidazole, and kept stirring for 3 hours to form a precipitate; the stirred product was filtered, and the obtained solid was washed with methanol for 3 times, then vacuum-dried at 80°C for 4 hours to obtain a solid powder; Calcined at 600°C for 3 hours in a nitrogen atmosphere to obtain a N-Ni / C-2 matrix with a nickel loading of 58 wt%.
[0042] Take 50g of N-Ni / C-2 substrate, reduce it with hydrogen at 500°C for 4 hours, place it in 500mL Ru 3+ Aqueous solution (Ru 3+ 3×10 -4 g / mL of ruthenium nitrate aqueous solution) for 30 hours, through adsorption and displacement reaction, Ru is loaded on the substrate, filtered, and washed with deionized water until nearly neutral, to obtain a loaded catalyst containing 0.3wt% Ru. Stored in deionized water, the catalys...
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