化工学报2017，Vol.68Issue(2)：716-722,7.DOI:10.11949/j.issn.0438-1157.20160926
微波辅助二次生长法合成SAPO-34分子筛膜与关键影响因素
Synthesis of SAPO-34 membranes and critical influence factors in microwave-assisted secondary growth
摘要
Abstract
SAPO-34 membranes for separation of CO2/CH4 gas mixture were fabricated on porous α-Al2O3 substrates by seeded growth under microwave irradiation. Effects of synthesis conditions, including heating mode, seed size, aging and synthesis time, on membrane morphology and structure were investigated in order to manufacture dense and thin SAPO-34 membranes. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) were used to characterize SAPO-34 membranes. 1.5μm-thick defect-free SAPO-34 membrane could be obtained with high reproducibility at condition of 0.4μm-sized seed, 24 h aging, and 4 h microwave heating. The new membrane demonstrated an average CO2/CH4 separation selectivity at 81 and high CO2 permeability at 6.6×10−7 mol·m−2·s−1·Pa−1.关键词
天然气/SAPO-34分子筛膜/微波辅助加热/CO2/CH4分离Key words
natural gas/SAPO-34 membrane/microwave-assisted heating/CO2/CH4 separation分类
化学化工引用本文复制引用
郝阿辉,刘晓红,刘秀凤,张宝泉..微波辅助二次生长法合成SAPO-34分子筛膜与关键影响因素[J].化工学报,2017,68(2):716-722,7.基金项目
国家自然科学基金项目（21476171）。 （）
