Amine-functionalized mesoporous ZSM-5 zeolite adsorbents for carbon dioxide capture

作者：Wang, Yisong; Du, Tao^*; Song, Yanli; Che, Shuai; Fang, Xin; Zhou, Lifeng

来源：Solid State Sciences, 2017, 73: 27-35.

DOI：10.1016/j.solidstatesciences.2017.09.004

• ZSM-5
• Tetraethylenepentamine (TEPA)
• Adsorbents
• CO2 adsorption

ZSM-5 type zeolite with mesoporous structure was prepared and then amine-functionalized with tetraethylenepentamine (TEPA) by wet impregnation method to form a series of CO2 adsorbents (ZTx). The structural properties of ZSM-5 and ZTx were characterized by XRD, FTIR, TGA/DTG, nitrogen adsorption/desorption, SEM and EDX techniques. The adsorption capacity of the adsorbents with different amine loading was measured at a temperature from 40 to 100 degrees C and the adsorption capacity of ZT7 was 1.80 mmol/g at 100 degrees C. The adsorption process and mechanism were studied by fitting the experimental data used the three adsorption kinetic models, and a complex physical and chemical mixing process was produced as the amine entered the surface and pore size of the zeolite. The high adsorption selectivity at 10% CO2 concentration and the stability of the five adsorption desorption cycles indicated that ZT7 is a suitable and promising CO2 adsorbent for the purification of industrial flue gas.

• 出版日期2017-11
• 单位东北大学