Composite metal oxide catalyst for one-step preparation of isobutyl isobutyrate from isobutyraldehyde, and preparation method of composite metal oxide catalyst
A technology of isobutyl isobutyrate and composite metal, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, aldehyde redox preparation, catalyst activation/preparation, etc. Replaced by hydroxyl groups, deactivated and other problems, to achieve the effect of improving stability and service life, good surface distribution, and high loading capacity
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[0020]Example 1
[0021](1) Preparation of carrier
[0022]Weigh 9.0 g of copper nitrate and 3.0 g of cerium nitrate, and dissolve them in 120 ml of water after they are evenly mixed to prepare a metal salt mixed solution. Dry 3.6g of carbon black at 150°C for 24 hours, and then fully impregnate the carbon black with ethanol. After the ethanol is evaporated, the carbon black is used for surface activity treatment to increase the adsorption capacity. Then disperse the pretreated carbon black in an alkali solution with a concentration of 0.1 mol / L TPAOH, add dropwise the prepared metal salt mixed solution into it, and stir at room temperature for 5 hours. Then add 1.2g of F127, and add dropwise 2mol / L ammonium hydroxide solution to it under stirring conditions until the pH is 10. It was then placed in an autoclave and crystallized at 180°C for 6 hours in a microwave system. Then the product was filtered, washed several times with distilled deionized water, and dried in an oven at 80°C for 2...
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[0029]Example 2
[0030]In step (3), 0.3 g of aluminum isobutoxide was changed to 0.6 g of aluminum isobutoxide, and the other operations were the same as in Example 1.
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[0031]Example 3
[0032]In step (3), 0.3 g of aluminum isobutoxide was changed to 0.9 g of aluminum isobutoxide, and the other operations were the same as in Example 1.
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