Chew Thiam Leng, Ding Sie Hao, Oh Pei Ching, Ahmad Abdul Latif, Ho Chii-Dong
Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia.
CO2 Research Centre (COSRES), Institute of Contaminant Management, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Perak, Malaysia.
Polymers (Basel). 2020 Oct 9;12(10):2312. doi: 10.3390/polym12102312.
The development of mixed matrix membranes (MMMs) for effective gas separation has been gaining popularity in recent years. The current study aimed at the fabrication of MMMs incorporated with various loadings (0-4 wt%) of functionalized KIT-6 (NHKIT-6) [KIT: Korea Advanced Institute of Science and Technology] for enhanced gas permeation and separation performance. NHKIT-6 was characterized by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and N adsorption-desorption analysis. The fabricated membranes were subjected to FESEM and FTIR analyses. The effect of NHKIT-6 loading on the CO permeability and ideal CO/CH selectivity of the fabricated membranes were investigated in gas permeation and separation studies. The successfulness of (3-Aminopropyl) triethoxysilane (APTES) functionalization on KIT-6 was confirmed by FTIR analysis. As observed from FESEM images, MMMs with no voids in the matrix were successfully fabricated at a low NHKIT-6 loading of 0 to 2 wt%. The CO permeability and ideal CO/CH selectivity increased when NHKIT-6 loading was increased from 0 to 2 wt%. However, a further increase in NHKIT-6 loading beyond 2 wt% led to a drop in ideal CO/CH selectivity. In the current study, a significant increase of about 47% in ideal CO/CH selectivity was achieved by incorporating optimum 2 wt% NHKIT-6 into the MMMs.
近年来，用于高效气体分离的混合基质膜（MMMs）的开发越来越受到关注。当前的研究旨在制备负载不同含量（0-4 wt%）功能化KIT-6（NHKIT-6）[KIT：韩国科学技术院]的混合基质膜，以提高气体渗透和分离性能。通过场发射扫描电子显微镜（FESEM）、X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）和N吸附-脱附分析对NHKIT-6进行了表征。对制备的膜进行了FESEM和FTIR分析。在气体渗透和分离研究中，考察了NHKIT-6负载量对制备膜的CO渗透率和理想CO/CH选择性的影响。通过FTIR分析证实了（3-氨丙基）三乙氧基硅烷（APTES）对KIT-6功能化的成功。从FESEM图像观察到，在0至2 wt%的低NHKIT-6负载量下成功制备了基质中无空隙的混合基质膜。当NHKIT-6负载量从0增加到2 wt%时，CO渗透率和理想CO/CH选择性增加。然而，NHKIT-6负载量进一步增加超过2 wt%会导致理想CO/CH选择性下降。在当前的研究中，通过在混合基质膜中加入最佳的2 wt% NHKIT-6，理想CO/CH选择性显著提高了约47%。
