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首页> 外文期刊>Energy & fuels >CO2 and CH4 Sorption by Solid-State [P-4 44 4][NTf2] Ionic Liquid Based on Quartz Crystal Microbalance Experiments under Different Pressures
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CO2 and CH4 Sorption by Solid-State [P-4 44 4][NTf2] Ionic Liquid Based on Quartz Crystal Microbalance Experiments under Different Pressures

机译：固态[P-4 44 4] [NTf2]离子液体在不同压力下基于石英晶体微天平实验吸附CO2和CH4

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摘要

Using a quartz crystal microbalance (QCM) measurement system, CO2 and CH4 capacity trapped by a solid-state ionic liquid, tettabutylphosphonium bis(trifluoromethanesulfonyl)imide [P-4 4 4 4] [NTf2], which was coated on the surface of a.. quartz crystal under pressures from 0.1 to 3 MPa at 30 degrees C, was calculated on the basis of the Sauerbrey equation. The frequency data under the pressure of 4 MPa are not applicable for CO2 measurements, because the ionic liquid film was destroyed and the frequency signal was perturbed possibly as a result of the reduced evenness of the [P-4 4 4 4] [NTf2] film after CO2 absorption. Besides, it is shown that both the gas sorption and CO2/CH4 selectivity, especially the mass-ratio-based selectivity, increase with pressure in the case of this solid-state ionic liquid film. During the ambient pressure, CO2/CH4 selectivity in [P-4 4 4 4] [NTf2] was lower than those in some reported fluid room-temperature ionic liquids.;The advantage of solid-state ionic liquids is an improved selectivity when the pressure increases, which is distinct from the results by fluid ionic liquids, for which the gas selectivity usually only slightly fluctuates with the pressure.
机译：使用石英微天平（QCM）测量系统，固态离子液体双（三氟甲磺酰基）亚胺丁基丁基phosph [P-4 4 4 4] [NTf2]捕获的CO2和CH4容量被涂覆在根据Sauerbrey方程，在0.1至3MPa的压力下于30℃下计算出..石英晶体。在4 MPa压力下的频率数据不适用于CO2测量，因为[P-4 4 4 4] [NTf2]的均匀度降低可能会破坏离子液体膜并且会干扰频率信号。吸收二氧化碳后的薄膜。此外，显示出在该固态离子液体膜的情况下，气体吸附和CO 2 / CH 4选择性，特别是基于质量比的选择性均随压力而增加。在环境压力下，[P-4 4 4 4] [NTf2]中的CO2 / CH4选择性低于某些报道的流体室温离子液体。;固态离子液体的优势在于当压力增加，这与液体离子液体的结果截然不同，因为液体离子液体的气体选择性通常仅随压力而略微波动。

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  • 来源
    《Energy & fuels》 |2017年第4期|4179-4185|共7页
  • 作者

    Wang Lanyun; Xu Yongliang; Wang Shaokun; Wei Yanan;

  • 作者单位

    Henan Polytech Univ, Sch Safety Sci & Engn, Jiaozuo 454003, Henan, Peoples R China|Henan Polytech Univ, State Key Lab Cultivat Base Gas Geol & Gas Contro, Jiaozuo 454003, Henan, Peoples R China|Collaborat Innovat Ctr Coal Safety Prod Henan Pro, Jiaozuo 454003, Henan, Peoples R China;

    Henan Polytech Univ, Sch Safety Sci & Engn, Jiaozuo 454003, Henan, Peoples R China|Henan Polytech Univ, State Key Lab Cultivat Base Gas Geol & Gas Contro, Jiaozuo 454003, Henan, Peoples R China|Collaborat Innovat Ctr Coal Safety Prod Henan Pro, Jiaozuo 454003, Henan, Peoples R China;

    Henan Polytech Univ, Sch Safety Sci & Engn, Jiaozuo 454003, Henan, Peoples R China;

    Henan Polytech Univ, Sch Safety Sci & Engn, Jiaozuo 454003, Henan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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