A kind of modified aluminum oxide and preparation method thereof
A technology of alumina modification, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as weak alkalinity, achieve lower alkalinity, low production cost, and easy industrialization The effect of production
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Embodiment 1
[0041] (1) Mix 10g alumina with 100mL deionized water, stir for 30 minutes, and then dry at 150°C for 15 hours;
[0042] (2) Mix the alumina obtained in step (1) with 100 mL of ethanol, stir for 30 min, then dry at 150°C for 15 hours, and then treat it at 260°C for 4 hours;
[0043] (3) Mix the alumina obtained in step (2) with 20 g of ferrous chloride and 100 mL of deionized water, stir for 5 hours, then directly filter and separate, and then dry at 150°C for 15 hours;
[0044] (4) Treat the material obtained in step (3) at 500°C for 6 hours in a nitrogen atmosphere, and finally obtain modified alumina. The sample number is CL1, the alkaline quality of the sample is shown in figure 1 , Other properties are shown in Table 1. From figure 1 As shown in Table 1, the alkali content of the modified alumina is 29.2% of the original alumina, and the surface area is 208m 2 / g, indicating that the method of the present invention can effectively reduce the alkalinity of alumina without basica...
Embodiment 2
[0046] (1) Mix 10g alumina with 90mL deionized water, stir for 30 min, and then dry at 140°C for 15h;
[0047] (2) Mix the alumina obtained in step (1) with 90 mL of ethanol, stir for 30 min, then dry at 140°C for 15 hours, and then treat it at 265°C for 4 hours;
[0048] (3) Mix the alumina obtained in step (2), 15 g of ferrous chloride, and 90 mL of deionized water, stir for 4 hours, then directly filter and separate, and then dry at 150°C for 15 hours;
[0049] (4) Treat the material obtained in step (3) at 500°C for 5 hours in a nitrogen atmosphere, and finally obtain modified alumina. The sample number is CL2, and the physical and chemical properties of the sample are shown in Table 1.
Embodiment 3
[0051] (1) Mix 10g alumina with 90mL deionized water, stir for 30 min, and then dry at 140°C for 15h;
[0052] (2) Mix the alumina obtained in step (1) with 90 mL of ethanol, stir for 30 min, then dry at 140°C for 15 hours, and then treat it at 260°C for 4 hours;
[0053] (3) Mix the alumina obtained in step (2) with 8 g of ferrous chloride and 100 mL of deionized water, stir for 6 hours, then directly filter and separate, and then dry at 150°C for 15 hours;
[0054] (4) Treat the material obtained in step (3) at 450°C for 6 hours in a nitrogen atmosphere, and finally obtain modified alumina. The sample number is CL3, and the physical and chemical properties of the sample are shown in Table 1.
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