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Difunctional Effects of Organo-Modified T-Type Zeolite Membranes for Dewatering from Organic Solution
Author NameAffiliationE-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 
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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Chinese Journal of Inorganic Chemistry