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, easy industrial production, and cheap raw materials Easy to get effect
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Embodiment 1
[0041] (1) Mix 10g of alumina with 100mL of 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 100mL ethanol, stir for 30 minutes, then dry at 150°C for 15h, and then treat at 260°C for 4h;
[0043] (3) Mix the alumina obtained in step (2) with 20g of ferrous chloride and 100mL of deionized water, stir for 5h, then directly filter and separate, and then dry at 150°C for 15h;
[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 obtained sample number is CL1, and the basic properties of the obtained samples are shown in figure 1 , and other properties are shown in Table 1. from figure 1 It can be seen from Table 1 that 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 alk...
Embodiment 2
[0046] (1) Mix 10g of alumina with 90mL of deionized water, stir for 30 minutes, and then dry at 140°C for 15 hours;
[0047] (2) Mix the alumina obtained in step (1) with 90mL of ethanol, stir for 30 min, then dry at 140°C for 15h, then treat at 265°C for 4h;
[0048] (3) Mix alumina obtained in step (2), 15g of ferrous chloride, and 90mL 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 obtained sample number is CL2, and the physicochemical properties of the obtained sample are shown in Table 1.
Embodiment 3
[0051] (1) Mix 10g of alumina with 90mL of deionized water, stir for 30 minutes, and then dry at 140°C for 15 hours;
[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 h, and then treat at 260 °C for 4 h;
[0053] (3) Mix the alumina obtained in step (2) with 8g of ferrous chloride and 100mL of deionized water, stir for 6h, then directly filter and separate, and then dry at 150°C for 15h;
[0054] (4) Treat the substance obtained in step (3) at 450° C. for 6 hours in a nitrogen atmosphere, and finally obtain modified alumina. The obtained sample number is CL3, and the physicochemical properties of the obtained sample are shown in Table 1.
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Abstract
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