Synthesis of high performance mordenite membranes from fluoride-containing dilute solution under microwave-assisted heating
Synthesis of high performance mordenite membranes from fluoride-containing dilute solution under microwave-assisted heating
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微波辅助加热含氟稀溶液合成高性能丝光沸石膜
DOI：
10.1016/j.memsci.2016.03.056
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发表时间：
2016-08
影响因子：
9.5
通讯作者：
Jinqu Wang
中科院分区：
文献类型：
--
作者：
Liangqing Li;Jianhua Yang;Jiajia Li;Pan Han;Jinqu Wang
在微波辅助加热下，以含氟稀溶液为原料，在短时间内合成了高性能丝光沸石膜。系统研究了结晶温度、氟离子和铝源对渗透蒸发法醋酸脱水膜形态和分离性能的影响。采用不同的铝源，以SiO2: 0.06Al2O3:0.24Na2O:0.3NaF:120H2O的稀溶液，在165℃下反应4 h，可制得厚度约为5µm的高性能丝光沸石膜。这些丝光沸石膜具有0.87±0.06 kg m−2h−1的高通量和出色的选择性，即在75°C下对90%的乙酸水混合物脱水时，只有纯水在渗透侧被检测到。微波辅助加热含氟稀溶液，丝光沸石膜的重现性高，在醋酸水溶液优先分离方面具有广阔的工业应用前景。
High performance mordenite membranes were successfully prepared in a short synthesis time from fluoride-containing dilute solution without organic template under microwave-assisted heating. The effects of crystallization temperature, fluoride ion and aluminum source on the membrane morphology and separation performance for dehydration of acetic acid by pervaporation were systematically investigated. High performance mordenite membranes with a thickness about 5 µm could be prepared from dilute solution with composition of SiO2: 0.06Al2O3:0.24Na2O:0.3NaF:120H2O at 165 °C for 4 h using various aluminum sources. These mordenite membranes exhibited high fluxes of 0.87±0.06 kg m−2h−1and excellent selectivities, that is only pure water was detected in the permeate side for dehydration of 90 wt% acetic acid aqueous mixtures at 75 °C. The reproducibility of mordenite membranes was high, using the fluoride-containing dilute solution under microwave-assisted heating, which forebodes a promising prospect for industrial applications in preferential separation of water from acetic acid aqueous solutions.
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影响因子：
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