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Difunctional Effects of Organo-Modified T-Type Zeolite Membranes for Dewatering from Organic Solution |
Author Name | Affiliation | E-mail | CUI Xue | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | ZHANG Yu-Ping | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | GUI Tian | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | HE Ming-Liang | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | ZHANG Fei | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | fzhang@jxnu.edu.cn | HU Na | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | LI Yu-Qin | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | | CHEN Xiang-Shu | IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China | cxs66cn@jxnu.edu.cn |
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Abstract: 3-aminopropyltriethoxysilane (APTES) was introduced to modify the surface of T-type zeolite membranes. Characterizations, such as X-ray diffraction, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy and FT-IR, demonstrated that APTES was successfully modified on the membrane surface by chemical bonding. The modified APTES plays two roles:one is to improve the membrane hydrophilicity and the other is to reduce the defects of membrane layer. The modified membranes showed a high separation factor and water flux for the dewatering of a 90% isopropyl alcohol solution at 348 K. This method showed good reproducibility, and five modified membranes demonstrated an increased separation factor by about 8 times (from 359±23 to 2 934±183), and a slightly decreased total flux from (3.52±0.10) kg·m-2·h-1 to (3.06±0.14) kg·m-2·h-1 (a decrease of 13.07%). At 363 K, during 100 h of continuous testing, the modified membrane was very stable, and the permeation side retained a high-water content above 99.50% with a feed solution of 90% isopropyl alcohol. |
Keywords: T-type zeolite membrane 3-aminopropyltriethoxysilane hydrophilic defects |
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CUI Xue,ZHANG Yu-Ping,GUI Tian,HE Ming-Liang,ZHANG Fei,HU Na,LI Yu-Qin,CHEN Xiang-Shu.Difunctional Effects of Organo-Modified T-Type Zeolite Membranes for Dewatering from Organic Solution[J].Chinese Journal of Inorganic Chemistry,2021,37(11):2068-2078. |
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