ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

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Some Influencing Factor for CO2 Absorption Cycle-Ability of Lithium Zirconate

WANG Yinjie1, QI Lu2, JIANG Weijun2   

  • Received:2005-07-20 Online:2006-03-20 Published:2006-03-20

Abstract: With nanometer-sized monoclinic ZrO2, lithium carbonate, and potassium carbonate as starting materials, according to n(Li2CO3) : n(ZrO2) : n(K2CO3) = 1 : 1 : 0.03, potassium-doped lithium zirconate absorbents were prepared by high-temperature solid-state reaction. Their CO2-absorption cycle-properties were measured with a thermogravimetric analyzer. The crystal structure of the re-prepared absorbents was studied by comparison of their XRD patterns. The microscopic morphologies of re-prepared absorbents were viewed by a sanning electron microscopy. The experimental results showed, after absorption of CO2, the material could be re-prepared, whose performance of absorbing CO2 for the second time is affected by the temperature and air flux during re-preparation. When the temperature is 750℃ and the air flux is 100mL/min, the re-prepared material has good cycle ability to absorb CO2.