CO2 Separation in a Flow System by Silica Microhoneycombs Loaded with an Ionic Liquid Prepared by the Ice-Templating Method
CO2 Separation in a Flow System by Silica Microhoneycombs Loaded with an Ionic Liquid Prepared by the Ice-Templating Method
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DOI：
10.1021/acs.iecr.6b05001
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发表时间：
2017-03
影响因子：
4.2
通讯作者：
S. Yoshida;Kazuya Takahashi;S. Kudo;Shinichiroh Iwamura;I. Ogino;S. Mukai
中科院分区：
文献类型：
--
作者：
S. Yoshida;Kazuya Takahashi;S. Kudo;Shinichiroh Iwamura;I. Ogino;S. Mukai
通过用带有氨基的离子液体三己基（十四烷基）丙酸鏻（[P66614][Ala]）浸渍SMH，成功合成了负载离子液体（IL）的二氧化硅微蜂窝（SMH）（IL-SMH）。 SMH 可以掺入至少 50 wt% 的 [P66614][Ala]，而其直通道不会被堵塞，如 He 通过材料时的低压降所证明的那样。含有 50 wt% [P66614][Ala] 的 IL-SMH 在 303 K 的 CO2 33%–N2 67% 气氛中显示出 ~0.26 mmol-CO2·g–1 的 CO2 容量。IL-SMH 可以通过在 393 K 下加热来轻松再生，并且可以重复使用至少 3 次而不会失去 CO2 吸收能力。 IL-SMH 还可以在流动系统中有效分离 CO2。未使用的床的长度很短（仅19毫米）。这些结果表明 IL-SMH 在流动系统中用于有效 CO2 分离的巨大潜力。
Silica microhoneycombs (SMHs) loaded with an ionic liquid (IL) (IL-SMHs) were successfully synthesized by impregnating SMHs with an IL bearing an amino group, trihexyl(tetradecyl)phosphonium alanate ([P66614][Ala]). SMHs can incorporate at least 50 wt % [P66614][Ala] without its straight channels being clogged as demonstrated by a low pressure drop when He was passed through the material. The IL-SMH containing 50 wt % [P66614][Ala] shows a CO2 capacity of ∼0.26 mmol-CO2·g–1 in a CO2 33%–N2 67% atmosphere at 303 K. IL-SMHs can be readily regenerated by heating them at 393 K and can be reused at least three times without losing the CO2 absorption ability. IL-SMH can also effectively separate CO2 in a flow system. The length of unused bed was very short (only 19 mm). These results demonstrate the high potential of IL-SMHs to be used for effective CO2 separation in flow systems.