Method for preparing Sm2O3 nano powder by microwave-hydrothermal method
A technology of microwave hydrothermal method and nano-powder, which is applied in chemical instruments and methods, rare earth metal compounds, inorganic chemistry, etc., can solve the problems of low utilization rate of raw materials, expensive equipment and equipment, and high equipment requirements, and achieve low cost and high particle size. The effect of uniformity and simple process equipment
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Embodiment 1
[0011] Example 1: First, analytically pure SmCl 3 ·6H 2 O was added to deionized water, stirred on a magnetic stirrer to dissolve, and Sm 3+ A transparent solution A with a concentration of 0.8mol / L; secondly, stir the transparent solution A at 55°C for 3 hours, and adjust the pH value of the solution to 5.4 to form a solution B with a mass percentage of 8% ammonia solution; then, the solution B is poured into the microwave hydrothermal reactor, the filling degree is controlled at 80%, the microwave hydrothermal kettle is sealed, and it is put into the MDS-8 temperature-pressure dual-control microwave hydrothermal reactor, and the hydrothermal temperature is controlled at 110°C. React for 4 hours, cool down to room temperature naturally after the reaction is over; finally, turn on the hydrothermal kettle, centrifuge the product at 4000 rpm, then wash 4 times with absolute ethanol to make the product particles indirect and loose, and place at 100°C Sm can be obtained after dr...
Embodiment 2
[0012] Example 2: First, analytically pure SmCl 3 ·6H 2 O was added to deionized water, stirred on a magnetic stirrer to dissolve, and Sm 3+ A transparent solution A with a concentration of 1.7mol / L; secondly, stir the transparent solution A at 48°C for 4 hours, and adjust the pH value of the solution to 5.6 by using a 5% ammonia solution by mass percentage to form a solution B; then, the solution B is poured into the microwave hydrothermal kettle, the filling degree is controlled at 75%, the microwave hydrothermal kettle is sealed, and it is put into the MDS-8 temperature-pressure dual-control microwave hydrothermal reactor, and the hydrothermal temperature is controlled at 180°C. React for 2 hours, cool down to room temperature naturally after the reaction is over; finally, turn on the hydrothermal kettle, centrifuge the product at 4000 rpm, then wash with isopropanol 4 times to make the product particles indirect and loose, and place at 80°C Sm can be obtained after dryin...
Embodiment 3
[0013] Example 3: First, analytically pure SmCl 3 ·6H 2 O was added to deionized water, stirred on a magnetic stirrer to dissolve, and Sm 3+ A transparent solution A with a concentration of 1.0 mol / L; secondly, stir the transparent solution A at 52° C. for 5 hours, and adjust the pH value of the solution to 5.9 with a mass percentage of 9% ammonia solution to form a solution B; then, the solution B is poured into a microwave hydrothermal kettle, the filling degree is controlled at 67%, the microwave hydrothermal kettle is sealed, and it is put into an MDS-8 temperature-pressure dual-control microwave hydrothermal reactor, and the hydrothermal temperature is controlled at 150°C. React for 3 hours, cool down to room temperature naturally after the reaction is over; finally, turn on the hydrothermal kettle, centrifuge the product at 4000 rpm, then wash 4 times with absolute ethanol to make the product particles indirect and loose, and place at 120°C Sm can be obtained after dry...
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