Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zurich, Switzerland.
Environ Sci Technol. 2011 Oct 15;45(20):9101-8. doi: 10.1021/es202223p. Epub 2011 Sep 26.
A novel amine-based adsorbent for CO₂ capture from air was developed, which uses biogenic raw materials and an environmentally benign synthesis route without organic solvents. The adsorbent was synthesized through freeze-drying an aqueous suspension of nanofibrillated cellulose (NFC) and N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane (AEAPDMS). At a CO₂ concentration of 506 ppm in air and a relative humidity of 40% at 25 °C, 1.39 mmol CO₂/g was absorbed after 12 h. Stability was examined for over 20 consecutive 2-h-adsorption/1-h-desorption cycles, yielding a cyclic capacity of 0.695 mmol CO₂/g.
开发了一种新型的胺基吸附剂，用于从空气中捕获 CO₂，该吸附剂使用生物基原料和环境友好的合成路线，不使用有机溶剂。吸附剂是通过冷冻干燥纳米原纤纤维素 (NFC) 和 N-(2-氨乙基)-3-氨丙基甲基二甲氧基硅烷 (AEAPDMS) 的水悬浮液合成的。在 25°C 时，空气中 CO₂浓度为 506 ppm，相对湿度为 40%，12 小时后吸收了 1.39 mmol CO₂/g。经过 20 多次连续的 2 小时吸附/1 小时解吸循环稳定性测试，得到的循环容量为 0.695 mmol CO₂/g。
