TY - JOUR

T1 - Ultrafast Semi-Solid Processing of Highly Durable ZIF-8 Membranes for Propylene/Propane Separation

AU - Ma, Qiang

AU - Mo, Kai

AU - Gao, Shushu

AU - Xie, Yafang

AU - Wang, Jinzhao

AU - Jin, Hua

AU - Feldhoff, Armin

AU - Xu, Shutao

AU - Lin, Jerry Y.S.

AU - Li, Yanshuo

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (No. 21808113), National Natural Science Foundation of Zhejiang (No. LR18B060002), Major Special Projects of the Plan “Science and Technology Innovation 2025” in Ningbo (No. 2018B10016) and the K. C. Wong Magna Fund in Ningbo University. Gratefully acknowledged is funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—FE928/15‐1.

PY - 2020/11/24

Y1 - 2020/11/24

N2 - ZIF-8 membranes have emerged as the most promising candidate for propylene/propane (C3H6/C3H8) separation through its precise molecular sieving characteristics. The poor reproducibility and durability, and high cost, thus far hinder the scalable synthesis and industrial application of ZIF-8 membranes. Herein, we report a semi-solid process featuring ultrafast and high-yield synthesis, and outstanding scalability for reproducible fabrication of ZIF-8 membranes. The membranes show excellent C3H6/C3H8 separation performance in a wide temperature and pressure range, and remarkable stability over 6 months. The ZIF-8 membrane features dimethylacetamide entrapped ZIF-8 crystals retaining the same diffusion characteristics but offering enhanced adsorptive selectivity for C3H6/C3H8. The ZIF-8 membrane was prepared on a commercial flat-sheet ceramic substrate. A prototypical plate-and-frame membrane module with an effective membrane area of about 300 cm2 was used for efficient C3H6/C3H8 separation.

AB - ZIF-8 membranes have emerged as the most promising candidate for propylene/propane (C3H6/C3H8) separation through its precise molecular sieving characteristics. The poor reproducibility and durability, and high cost, thus far hinder the scalable synthesis and industrial application of ZIF-8 membranes. Herein, we report a semi-solid process featuring ultrafast and high-yield synthesis, and outstanding scalability for reproducible fabrication of ZIF-8 membranes. The membranes show excellent C3H6/C3H8 separation performance in a wide temperature and pressure range, and remarkable stability over 6 months. The ZIF-8 membrane features dimethylacetamide entrapped ZIF-8 crystals retaining the same diffusion characteristics but offering enhanced adsorptive selectivity for C3H6/C3H8. The ZIF-8 membrane was prepared on a commercial flat-sheet ceramic substrate. A prototypical plate-and-frame membrane module with an effective membrane area of about 300 cm2 was used for efficient C3H6/C3H8 separation.

KW - membranes

KW - plate-and-frame module

KW - propylene/propane separation

KW - semi-solid processing

KW - ZIF-8

UR - http://www.scopus.com/inward/record.url?scp=85091610605&partnerID=8YFLogxK

U2 - 10.1002/ange.202008943

DO - 10.1002/ange.202008943

M3 - Article

C2 - 32844513

AN - SCOPUS:85091610605

VL - 59

SP - 21909

EP - 21914

JO - Angewandte Chemie

JF - Angewandte Chemie

SN - 1433-7851

IS - 49

ER -