复合型胺基吸附纤维及其对二氧化碳的吸附性能  

PREPARATION AND PROPERTY OF AMINE GROUP CONTAINING FIBROUS ADSORBENT FOR CARBON DIOXIDE CAPTURE

作　　者：李培源[1] 陈水挟[1] 张其坤[1] 张素娟[1] 潘俊健[1] 

机构地区：[1]中山大学材料科学研究所聚合物复合材料与功能材料教育部重点实验室,广州510275

出　　处：《离子交换与吸附》2008年第3期232-239,共8页Ion Exchange and Adsorption

基　　金：广东省自然科学基金(5003270);广州市科技计划攻关项目(2006Z2-E0081)

摘　　要：将聚乙撑亚胺固化在玻璃纤维上,制得胺基吸附纤维。系统考察了不同原料比例下该吸附纤维的化学结构性能、热稳定性能及交换容量,测定了该吸附纤维的吸水率,在饱和水蒸汽和干燥条件下对CO2的吸附性能,以及作为CO2气体吸附材料的重复使用及再生性能。研究表明,适当的交联剂用量可使该吸附纤维250℃左右仍保持热稳定。该吸附纤维具有较高的交换容量,最高可达到3mmol/g以上;在饱和水蒸汽环境中,该吸附纤维对二氧化碳的吸附量可达20wt%以上,但吸附量随着交联程度的提高而减低。该吸附纤维具有良好的重复使用及再生性能,经再生使用后,吸附纤维对湿态CO2的吸附量变化不大。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 thermal stability of the fibrous adsorbent and their adsorption characteristics for water, CO2 in dry or in humid environment were studied. The experimental results show that the properly cross-linked fibrous adsorbent can keep thermal stability of fibrous adsorbents at 250℃. The carbon dioxide adsorption capacity of this kind of fibrous adsorbent can reach over 20wt% in saturated water vapor at about 25℃. However, the carbon dioxide adsorption capacity will decrease with increasing cross-linked degree of the fibrous adsorbent. The fibrous adsorbent can be regenerated at 80℃, and it keeps its adsorption capacity very well.

关 键 词：复合型胺基吸附纤维 二氧化碳 吸附 

分 类 号：O647.3[理学—物理化学]