Preparation method and application of copper/silicon oxide xerogel catalyst
A technology of dry gel catalyst and silicon oxide, which is applied in the preparation of organic compounds, chemical instruments and methods, preparation of amino hydroxyl compounds, etc., to achieve the effects of improved catalytic activity, low equipment requirements, and good stability
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Embodiment 1
[0042] (1) At room temperature, weigh 7.9172g of zirconium oxychloride octahydrate and add it to 9mL of absolute ethanol, stir and mix well to obtain mixed solution A;
[0043] (2) Weigh 0.76g of copper nitrate trihydrate and add it to 3mL of deionized water, stir until uniform to obtain mixed solution B;
[0044] (3) The mixed solution B was slowly added dropwise to the mixed solution A, and after reacting for 8 hours under magnetic stirring, the stirring was stopped to obtain the mixed solution C;
[0045] (4) Measure 1 mL of nitric acid and slowly add it to the mixed solution C drop by drop, stir for 5 minutes, stop stirring, and wait for gelation at room temperature;
[0046] (5) The wet gel obtained in step (4) was aged in the air for 10 hours, then dried in a vacuum oven at 60°C for 24 hours, and then dried at normal pressure: first dried at 60°C for 4 hours, then at 80°C for 2 hours, and finally at 120°C Dry at ℃ for 2h;
[0047] (6) Calcinate the massive solid obtain...
Embodiment 2
[0055] (1) At room temperature, weigh 8.709g of zirconium oxychloride octahydrate and add it to 9mL of absolute ethanol, stir and mix well to obtain mixed solution A;
[0056] (2) Weigh 0.076g of copper nitrate trihydrate and add it to 3mL of deionized water, stir until uniform to obtain mixed solution B;
[0057] (3) The mixed solution B was slowly added dropwise to the mixed solution A, and after reacting for 8 hours under magnetic stirring, the stirring was stopped to obtain the mixed solution C;
[0058] (4) Measure 1 mL of nitric acid and slowly add it to the mixed solution C drop by drop, stir for 3 minutes, stop stirring, and wait for gelation at room temperature;
[0059] (5) The wet gel obtained in step (4) was aged in the air for 10 hours, then dried in a vacuum oven at 45°C for 24 hours, and then dried at normal pressure: first dried at 60°C for 4 hours, then at 80°C for 2 hours, and finally at 120°C Dry at ℃ for 2h;
[0060] (6) Calcinate the massive solid obtain...
Embodiment 3
[0062] (1) At room temperature, weigh 7.4774g of zirconium oxychloride octahydrate and add it to 9mL of absolute ethanol, stir and mix well to obtain mixed solution A;
[0063] (2) Weigh 0.8048g cupric chloride dihydrate and add it to 5mL deionized water, stir until uniform to obtain mixed solution B;
[0064] (3) The mixed solution B was slowly added dropwise to the mixed solution A, and after reacting for 10 h under magnetic stirring, the stirring was stopped to obtain the mixed solution C;
[0065] (4) Measure 1.5mL of nitric acid and slowly add it to the mixed solution C dropwise, stir for 5min, stop stirring, and wait for gelation at room temperature;
[0066] (5) The wet gel obtained in step (4) was aged in the air for 12 hours, then dried in a vacuum oven at 60°C for 24 hours, and then dried at normal pressure: first dried at 60°C for 4 hours, then at 80°C for 2 hours, and finally at 120°C Dry at ℃ for 2h;
[0067] (6) Calcinate the massive solid obtained in step (5) ...
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