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离子液体浸渍ZIF-67捕获CO2的实验研究
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Abstract:
全球温室效应的加剧以及碳达峰碳中和的提出，进一步把二氧化碳(CO2)的捕集与封存推到了高潮。碳达峰、碳中和的提出把低碳减排进一步成为焦点。液体吸收剂的挥发性高，还容易腐蚀设备，这为吸附剂的发展创造了条件。为研究性能优良吸附剂，合成了新型的高CO2选择性吸附剂ZIF-N-0.75使得二氧化碳的吸附选择性高达16.0568。通过溶剂热的方法合成了ZIF-67以及ZIF-N-0.75，同时实现了对吸附剂孔结构的调控。离子液体为新型的二氧化碳吸收剂，其具有低挥发性、低腐蚀性等优点。且离子液体的吸收容量很大。本文将吸收剂与吸附剂结合合成新型吸附剂，来优化吸附剂性能。本研究合成了离子液体(四甲基铵甘氨酸盐([N1111][Gly])、1-丁基-3-甲基咪唑L赖氨酸盐([Bmim][Lys]))浸渍ZIF-67的新型CO2吸附剂(ZIF-N, ZIF-B)。实验结果表明浸渍之后的新型吸附剂提高了CO2的吸附选择性，从选择性10.294提升到23.087。这对于二氧化碳的捕集提供了好的思路。
The intensification of global greenhouse effect and the proposal of carbon peak carbon neutralization further push the capture and storage of carbon dioxide (CO2) to a climax. The proposal of carbon peak and carbon neutralization further becomes the focus of low-carbon emission reduction. Liquid absorbents are highly volatile and prone to corrosion of equipment, which creates conditions for the development of adsorbents. In order to study the adsorbent with excellent performance, a novel high CO2 selective adsorbent ZIF-N-0.75 was synthesized, which made the adsorption selectivity of carbon dioxide up to 16.0568. ZIF-67 and ZIF-N-0.75 were synthesized by solvothermal method, and the pore structure of adsorbent was regulated. Ionic liquid is a new type of carbon dioxide absorbent, which has the advantages of low volatility and low corrosion. And ionic liquid absorption capacity is very large. In this paper, a new type of adsorbent is synthesized by combining absorbent and adsorbent to optimize the performance of adsorbent. In this study, ZIF-N and ZIF-B were synthesized by impregnating ZIF-67 with ionic liquid (tetramylammonium glycine ([N1111][Gly]) and 1-butyl-3-methylimidazolium L lysine ([Bmim][Lys]). The experimental results show that the new adsorbent after impregnation improves the adsorption selectivity of CO2 from 10.294 to 23.087. This provides a good idea for CO2 capture.
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