Extrapolation of the Clausius-Clapeyron plot for estimating the CO₂ adsorption capacities of zeolites at moderate temperature conditions

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• 作者：Yu-Ri Lee ; Seung-Hwan Hong ; Wha-Seung Ahn
• 关键词：Zeolites ; CO2 Adsorption ; Clausius ; Clapeyron Equation ; TGA ; Breakthrough
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：34
• 期：1
• 页码：37-40
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Industrial Chemistry/Chemical Engineering; Catalysis; Materials Science, general; Biotechnology;
• 出版者：Springer US
• ISSN：1975-7220
• 卷排序：34

文摘

CO₂ adsorption capacity of zeolite 13X and Na+-chabazite at 473 K was estimated by extrapolating the CO₂ adsorption isotherm data measured in the temperature range of 298 to 373 K by employing the Clausius-Clapeyron equation, and compared with those by gravimetric measurements using a TGA unit and by the breakthrough curves obtained using a gas mixture (CO₂ 30% in N₂ balance) in a fixed bed adsorption unit. All three methods produced comparable CO₂ adsorption capacities, and justified the suggested experimental approach of the extrapolation procedure using the low temperature isotherm data for estimating gas adsorption capacity at high temperature conditions.