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钠镁复盐吸收剂的简单可控合成及其CO2吸收性能研究
引用本文:杨丽霞,刘丹,尚亚宁,张鹏,刘成伟,桂建舟.钠镁复盐吸收剂的简单可控合成及其CO2吸收性能研究[J].燃料化学学报,2018,46(7):886-890.
作者姓名:杨丽霞  刘丹  尚亚宁  张鹏  刘成伟  桂建舟
作者单位:1. State Key Laboratory of Separation Membranes and Membrane Processes, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China; 2. School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
基金项目:国家自然科学基金(21576211),天津市高等学校创新团队(TD13-5031)和天津市131创新团队资助
摘    要:以羧甲基纤维素钠作为晶形导向剂,通过简单的物料混合法制备了一系列形貌可控的钠镁复盐CO2吸收材料,并采用XRD、SEM、TG进行表征,同时利用静态吸收和变温动态吸收-解吸循环实验方法研究了其CO2吸收性能和循环使用稳定性。均一的层状钠镁复盐吸收剂在添加0.3 g羧甲基纤维素钠时可得到,其饱和吸收量为22.8%(质量分数);同时经过20次瞬时变温动态吸收-解吸循环实验后CO2吸收量可以达到并保持9.7%(质量分数),显示了良好的循环稳定性。

关 键 词:可控制备  晶形导向  钠镁复盐  变温吸收  
收稿时间:2018-04-02

A simple and controllable preparation of double salt Na2MgCO3 as an efficient CO2 absorbent
YANG Li-xia,LIU Dan,SHANG Ya-ning,ZHANG Peng,LIU Cheng-wei,GUI Jian-zhou.A simple and controllable preparation of double salt Na2MgCO3 as an efficient CO2 absorbent[J].Journal of Fuel Chemistry and Technology,2018,46(7):886-890.
Authors:YANG Li-xia  LIU Dan  SHANG Ya-ning  ZHANG Peng  LIU Cheng-wei  GUI Jian-zhou
Abstract:A series of sodium-magnesium double-salt as CO2 absorption materials with controllable morphologies were prepared by simple mixing method using sodium carboxymethyl cellulose as morphology-directing agent, and then characterized by XRD, SEM and TG. Finally, their CO2 absorption capability was evaluated by both saturation absorption tests at fixed temperature and dynamic absorption-desorption cyclic experiments. A uniform nanosheet-assembled absorbent, with 0.3 g sodium carboxymethyl cellulose added during preparation, can be obtained with a saturated absorption capacity of 22.8%. Meanwhile, good recycling capacity has been maintained at about 9.7% without apparent changes even after 20 cycles of dynamic absorption-desorption experiment.
Keywords:controllable preparation  morphology-directing  sodium-magnesium double-salt  temperature-swing absorption  
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