Preparation method and application of polyethylene glycol modified ferrocobalt composite oxide supported palladium catalyst
A polyethylene glycol modification and composite oxide technology, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., to achieve simple process and small particle size , the effect of developed pore structure
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Embodiment 1
[0022] (1), weigh 0.0266gPdCl 2 Dissolve in 50mL deionized water, heat at 45°C and stir for 20min to obtain Pd salt solution A, denoted as 0.6%Pd;
[0023] (2), weigh 2.17gCo(NO 3 ) 3 ·6H 2 O and 8.08gFe(NO 3 ) 3 9H 2 O was placed in a three-necked flask, and 300 mL of deionized water was added, and mechanically stirred for 15 min at 40°C to obtain a soluble metal salt solution B;
[0024] (3), obtain mixed metal salt solution C after above-mentioned A and B solution are fully mixed;
[0025] (4) Stir in the above solution C at 45°C in a water bath, add polyethylene glycol (PEG, relative molecular weight 600) and stir for 20 minutes, the amount of polyethylene glycol added is 1.5g per liter of mixed metal salt solution C. Add the NaOH solution drop by drop, adjust the pH to 9, obtain a milky white precipitate, continue to stir for 1 h, transfer the solution to a reaction kettle with a polytetrafluoroethylene liner, seal it, and place it in an oven at 180 ° C for 6 h. T...
Embodiment 2
[0027] (1), weigh 0.0266gPdCl 2 Dissolve in 50mL deionized water, heat at 45°C and stir for 20min to obtain Pd salt solution A, denoted as 0.6%Pd;
[0028] (2), weigh 4.34gCo(NO 3 ) 3 ·6H 2 O and 6.06gFe(NO 3 ) 3 9H 2 O was placed in a three-necked flask, and 300 mL of deionized water was added, and mechanically stirred for 15 min at 40°C to obtain a soluble metal salt solution B;
[0029] (3), obtain mixed metal salt solution C after above-mentioned A and B solution are fully mixed;
[0030] (4) Stir in the above solution C at 45°C in a water bath, add polyethylene glycol (PEG, relative molecular weight 600) and stir for 20 minutes, the amount of polyethylene glycol added is 1.5g per liter of mixed metal salt solution C. Add the NaOH solution drop by drop, adjust the pH to 10, and obtain a milky white precipitate, continue to stir for 1 h, transfer the solution to a reaction kettle with a polytetrafluoroethylene liner, seal it, and place it in an oven at 180 ° C for 6 ...
Embodiment 3
[0032] (1), weigh 0.0266gPdCl 2 Dissolve in 50 mL of deionized water, heat at 45°C and stir for 20 min to obtain Pd salt solution A, denoted as 0.6% Pd.
[0033] (2), weigh 6.45gCo(NO 3 ) 3 ·6H 2 O and 4.04gFe(NO 3 ) 3 9H 2 O was placed in a three-necked flask, and 300 mL of deionized water was added, and mechanically stirred for 15 min at 40°C to obtain a soluble metal salt solution B;
[0034] (3), obtain mixed metal salt solution C after above-mentioned A and B solution are fully mixed;
[0035] (4) Stir in the above solution C at 45°C in a water bath, add polyethylene glycol (PEG, relative molecular weight 600) and stir for 20 minutes, the amount of polyethylene glycol added is 1.5g per liter of mixed metal salt solution C. Add the NaOH solution drop by drop, adjust the pH to 10, and obtain a milky white precipitate, continue to stir for 1 h, transfer the solution to a reaction kettle with a polytetrafluoroethylene liner, seal it, and place it in an oven at 180 ° C ...
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