南京工业大学学报（自然科学版）2023，Vol.45Issue(6)：621-630,10.DOI:10.3969/j.issn.1671-7627.2023.06.004
掺杂MIL-53同源金属的氧化锆支撑体及膜的制备
Preparation of Zirconia supports and membranes doped with MIL-53 homologous metals
摘要
Abstract
The porous ceramic support was prepared by dry pressing method by using ZrO2 powder with an average particle size of 12.4 μm,adding Y2O3 with a molar fraction of 2.6％as a stabilizer and dopingα-Al2O3 with a molar fraction of 14.9％as a homolog(MIL-53)metal oxide.The α-Al2O3 in the support provides aluminum source to react with the organic ligand terephthalic acid on the surface of the support to synthesize the MIL-53 seed layer,and the dense MIL-53 film was prepared by seed-secondary growth method,and was used for the separation of C6 alkane isomers.Scanning electron microscopy(SEM),X-ray diffraction(XRD)and mercury injection were used to characterize the surface structure and properties of the support,MIL-53 seed layer and film layer.The results showed that the prepared support had good performance at 1 300 ℃,the porosity of the support was 30.1％,and the pure N2 flux reaches 1.17 × 10-7 m3/(m2·s·Pa).In addition,the synthesized MIL-53 membrane was continuous and dense,and the pervaporization results showed that the mass fraction of n-hexane and 3-methylpentane increased from 67.72％on the feedstock side to 74.67％on the permeable side,while the mass fraction of 2,2-dimethylbutane decreased from 32.28％to 25.33％.The total flux was as high as 1.56×103 g/(m2·h).Therefore,the prepared MIL-53 membrane had certain application value.关键词
ZrO2支撑体/同源金属掺杂/MIL-53/渗透汽化Key words
ZrO2 support/homologous metal doping/MIL-53/pervaporation分类
化学化工引用本文复制引用
王欢,王彦博,王世龙,侯如静,王重庆,潘宜昌..掺杂MIL-53同源金属的氧化锆支撑体及膜的制备[J].南京工业大学学报（自然科学版）,2023,45(6):621-630,10.基金项目
国家自然科学基金(22022807) （22022807）
江苏省自然科学基金(BK20200033) （BK20200033）
