聚乙烯亚胺型吸附纤维的制备及其对二氧化碳的吸附性能

Preparation and adsorption capacity for CO2 of polyethylenimine containing fibrous adsorbent for carbon dioxide capture

以玻璃纤维作为基质复合聚乙撑亚胺（PEI），制得含多胺基的复合型吸附纤维。表征了该吸附纤维的化学结构，评价了不同PEUEP比例、涂布质量以及吸附气体中CO2浓度对CO2吸附容量的影响。研究表明，在饱和水蒸汽环境中，CO2吸附量随PEUEP比例的增加而增加，对二氧化碳的吸附量最高可达89．11mgCO2／g-吸附纤维，相当于276．96mg CO2／g-PEI，但CO2吸附量随涂布质量的增加而降低。吸附气中CO2含量对CO2吸附容量的影响较大，随吸附气中CO2含量的增加，吸附纤维对CO2的吸附容量也增加。

A fibrous adsorbent for CO2 capture was prepared by coating ethylenimine polymers on glass fibers, using epoxy as the cross-linking agent. The chemical structures and the effect of PEI/EP ration, coating weight and CO2 concentration in the simulated flue gas were studied. The experimental results show that, in humid condition, CO2 adsorption capacity increases with increasing PEI/EP ratio, and the highest CO2 adsorption capacity can reach 89.11 mg CO2/g-adsorbent（equal to 276.96 mg CO2/g-PEI）,but as coating weight increase, CO2 adsorption capacity decreases. CO2 concentration in the simulated flue gas has a great affection to CO2 adsorption capacity, when CO2 concentration increases, the adsorption capacity increases.