Preparation method of lithium zirconate material for absorbing carbon dioxide at high temperature
A technology of lithium zirconate and high temperature, applied in chemical instruments and methods, separation methods, lithium compounds, etc., can solve the problems of long reaction time, complicated preparation process, high energy consumption, etc., and achieve excellent absorption performance, simple process, and preparation The effect of low temperature
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[0010] Example 1
[0011] Weigh ZrO with a particle size of 20nm 2 23.81g and Li with a particle size of 0.3μm 2 CO 3 Put 25.79g into the beaker together, add the ethanol solution into the beaker, and make a jelly under stirring. Treated in a microwave oven with a power of 500W for 120min, calcined at 700°C for 6h, ground and sieved to obtain a lithium zirconate material with an average particle size of 2.4μm. Put the synthesized lithium zirconate material at 500℃, 20% CO 2 (80% air) is kept at a constant temperature for a period of time, and the absorption capacity reaches 19.28wt% after the absorption equilibrium is reached.
Example Embodiment
[0012] Example 2
[0013] Weigh ZrO with a particle size of 120nm 2 25.41g and Li with a particle size of 0.3um 2 CO 3 Put 22.53g into a beaker together, add a mixed solution of methanol and ethanol into the beaker, and make a jelly under stirring. Treated in a microwave oven with a power of 2500W for 10 minutes, calcined at 550°C for 6 hours, ground and sieved to obtain a lithium zirconate material with an average particle size of 4.1 μm. Put the synthesized lithium zirconate material at 500℃, 20% CO 2 (80% air) is kept at a constant temperature for a period of time, and the absorption capacity reaches 20.67wt% after the absorption equilibrium is reached.
Example Embodiment
[0014] Example 3
[0015] Weigh ZrO with a particle size of 100nm 2 27.21g and Li with a particle size of 0.3um 2 CO 3 16.68g is put into a beaker together, and a mixed solution of ethanol and formic acid is added to the beaker, and a small amount of acetic acid and acetone are added, and a jelly is made under stirring. It was processed in a microwave oven with a power of 1800W for 30 minutes, calcined at 700°C for 2h, ground and sieved to obtain a lithium zirconate material with an average particle size of 3.3μm. Put the synthesized lithium zirconate material at 500℃, 20% CO 2 (80% air) is kept at a constant temperature for a period of time, and the absorption capacity reaches 25.61wt% after the absorption equilibrium is reached. At 500℃, 20% CO 2 (80% air) under the constant temperature for 3h, 700℃ under the air atmosphere for 1h, the lithium zirconate absorbs CO under the test procedure 2 Cyclic absorption performance test, after 25 absorption cycles, the absorption capacity a...
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