Kim Young-Ki, Mo Yong-Hwan, Lee Jun, You Hyo-Sang, Yi Chang-Keun, Park Young Cheol, Park Sang-Eon
Laboratory of Nano-Green Catalysis and Nano Center for Fine Chemical Fusion Technology, Department of Chemistry, Inha University, Incheon 402-751, Republic of Korea.
J Nanosci Nanotechnol. 2013 Apr;13(4):2703-7. doi: 10.1166/jnn.2013.7412.
Tetraethylenepentamine (TEPA) embedded zeolite A crystals were synthesized by using TEPA and the preformed zeolite A precursor under the microwave irradiation. The presence of TEPA in zeolite A crystal was confirmed by TG analysis and FTIR, Raman spectra. The CO2 adsorptive behavior of TEPA embedded zeolite A samples was investigated by CO2 isotherms measured at 25 degrees C comparing with zeolite A. The optimum CO2 sorption capacity was found in the case of 7.5% TEPA embedded zeolite A, which showed 3.75 mmol g(-1) where as the zeolite A showed less CO2 adsorption capacity of 2.88 mmol g(-1). The adsorption capacity of TEPA embedded Zeolite A was sustained up to 90% during 4 cycles of temperature swing adsorption (TSA) from 40 degrees C to 140 degrees C, indicating that the TEPA embedded Zeolite A was found to be useful as one of the application to solid amine adsorbent for CO2.
采用四乙烯五胺（TEPA）和预制的A型沸石前驱体，在微波辐射下合成了负载TEPA的A型沸石晶体。通过热重分析（TG）以及傅里叶变换红外光谱（FTIR）和拉曼光谱证实了A型沸石晶体中TEPA的存在。通过在25℃下测量二氧化碳等温线，与A型沸石进行比较，研究了负载TEPA的A型沸石样品对二氧化碳的吸附行为。发现在负载7.5%TEPA的A型沸石的情况下，二氧化碳吸附容量最佳，为3.75 mmol g⁻¹，而A型沸石的二氧化碳吸附容量较低，为2.88 mmol g⁻¹。在40℃至140℃的4次变温吸附（TSA）循环中，负载TEPA的A型沸石的吸附容量保持高达90%，这表明负载TEPA的A型沸石可作为固体胺吸附剂用于二氧化碳吸附的应用之一。
