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Synthesis and pervaporation performance of high-reproducibility silicalite-1 membranes

机译:高重现性silicalite-1膜的合成和全蒸发性能

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High-reproducibility silicalite-1 membranes were synthesized on silica tubes by in-situ hydrothermal synthesis, and the relative standard deviation (R.S.D.) of average separation factor for eight membranes was only 7.5%. By using an effective method called "solution-filling (SF)", the average flux of membranes prepared with SF method was improved by about 49% compared to membranes prepared without SF method, and the highest flux of membrane prepared with SF method towards ethanol/H2O mixture at 80 degrees C was 1.49 kg/(m(2)center dot h). Pervaporation experiments showed that the fluxes of silicalite-1 membranes at 60 degrees C were 2.63, 0.87, 0.24, and 0.20 kg/(m(2)center dot h) towards methanol/H2O, ethanol/H2O, 2-propanol/H2O, and 1-propanol/H2O mixtures, respectively, and the corresponding separation factors were 22, 69, 81, and 159, respectively.
机译:通过原位水热合成在硅胶管上合成了高重现性的silicalite-1膜,八种膜的平均分离系数的相对标准偏差(R.S.D.)仅为7.5%。通过使用一种称为“溶液填充(SF)”的有效方法,与不使用SF方法制备的膜相比,使用SF方法制备的膜的平均通量提高了约49%,并且使用SF方法制备的膜对乙醇的通量最高。 / H2O混合物在80摄氏度下为1.49千克/(m(2)中心点h)。全蒸发实验表明,silicalite-1膜在60摄氏度时通向甲醇/ H2O,乙醇/ H2O,2-丙醇/ H2O的通量为2.63、0.87、0.24和0.20 kg /(m(2)中心点h),和1-丙醇/ H2O混合物的分离系数分别为22、69、81和159。

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