CO2 Adsorption Performance of Ionic Liquid [P66614][2-Op] Loaded onto Molecular Sieve MCM-41 Compared to Pure Ionic Liquid in Biohythane/Pure CO2 Atmospheres

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• 作者：Jun Cheng ; Yannan Li ; Leiqing Hu ; Junhu Zhou ; Kefa Cen
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：April 21, 2016
• 年：2016
• 卷：30
• 期：4
• 页码：3251-3256
• 全文大小：428K
• 年卷期：0
• ISSN：1520-5029

文摘

With the upgrading of fermentative biogas to produce gaseous transport fuel, ionic liquid (IL) [P₆₆₆₁₄][2-Op], which adsorbed CO₂ through multiple-site cooperative interactions, was loaded onto molecular sieve MCM-41 to adsorb CO₂ in a biohythane atmosphere (CH₄ + H₂ + CO₂). [P₆₆₆₁₄][2-Op] loaded onto MCM-41 exhibited a higher CO₂ adsorption rate than pure IL during the initial stage because of its larger reaction surface area. However, the CO₂ adsorption rate of [P₆₆₆₁₄][2-Op] loaded onto MCM-41 became lower than that of pure IL as the reaction continued because CO₂ was inaccessible to the IL blocked within the inner pores of MCM-41. The CO₂ adsorption rate of IL loaded onto the molecular sieve (MCM-41–50% IL) was (51.5 mg of CO₂ g^–1 of IL min^–1) 2.1 times higher than that of pure IL during the initial 1 min in a pure CO₂ atmosphere and was (24.6 mg of CO₂ g^–1 of IL min^–1) 2.2 times higher than that of pure IL during the initial 2 min in a biohythane atmosphere.