Preparation method of mesoporous silica supported copper catalyst with central radial pore channels
A technology of mesoporous silica and copper catalysts is applied in the preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. High power consumption, increased by-products, etc., to achieve the effect of being suitable for large-scale industrial production, realizing automatic operation, and reducing environmental pollution
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Embodiment 1
[0030] A kind of center radial mesoporous silicon oxide nanosphere supported copper catalyst is prepared by the following method:
[0031] (1) 142.3g ether, 75.2g ethanol, 4.78g concentration are 28% ammoniacal liquor and 438.8g distilled water are mixed to become homogeneous solution, then add 4.20g cetyltrimethylammonium bromide (CTAB) at room temperature at rotating speed After stirring at 1000rpm for 1 hour, 20g of ethyl silicate (TEOS) was quickly added dropwise to the above mixture, stirred at 800rpm for 2 hours, and then heated to 50°C for 12 hours; a white precipitate was obtained;
[0032] (2) The white precipitate obtained in step (1) is filtered, washed and dried at 105°C for 24 hours, then raised to 500°C at a heating rate of 2°C / min and roasted for 6 hours to remove organic components, and obtain a radial channel with a center Mesoporous silica nanospheres (DMSNs), such as figure 1 shown;
[0033] (3) In 200ml of Cu(NO 3 ) 2 Add 5.0mol / L nitric acid solution t...
Embodiment 2
[0035] A kind of center radial mesoporous silicon oxide nanosphere supported copper catalyst is prepared by the following method:
[0036] (1) Mix 175.3g of ether, 96.8g of ethanol, 9.57g of 26% ammonia and 721.3g of distilled water to form a homogeneous solution, then add 4.04g of cetylpyridinium bromide and stir for 1 hour at room temperature at 1500rpm Finally, 20g of methyl silicate was quickly added dropwise to the above mixture, stirred at a rotation speed of 1500rpm for 2 hours, and then heated to 60°C for 6 hours to obtain a white precipitate;
[0037] (2) The white precipitate obtained in step (1) is filtered, washed and dried at 120°C for 12 hours, then raised to 550°C at a heating rate of 5°C / min and roasted for 4 hours to remove organic components, and obtain a radial channel with a center Mesoporous silica nanospheres (DMSNs);
[0038] (3) In 200ml of Cu(CH 3 COO) 2 Add 2.5 mol / L hydrochloric acid solution to the solution to adjust the pH value to 1.0, and add ...
Embodiment 3
[0040] A kind of center radial mesoporous silicon oxide nanosphere supported copper catalyst is prepared by the following method:
[0041] (1) 158.6g of ether, 91.3g of ethanol, 6.89g of 25% ammonia and 449.3g of distilled water are mixed to form a homogeneous solution, and then 3.63g of hexadecyltrimethylammonium chloride is added at room temperature at 1200rpm After stirring for 1 hour, 20 g of propyl silicate was quickly added dropwise to the above mixture, stirred at 1200 rpm for 2 hours, then heated to 60°C for 10 hours to obtain a white precipitate;
[0042] (2) The white precipitate obtained in step (1) is filtered, washed and dried at 120°C for 12 hours, then raised to 550°C at a heating rate of 2°C / min and roasted for 4 hours to remove organic components, and obtain a radial channel with a center Mesoporous silica nanospheres (DMSNs);
[0043] (3) In 200ml of Cu(NO 3 ) 2 Add 50wt% nitric acid solution to the solution to adjust the pH value to 1.0, add in step (2) t...
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