Enhanced C3H6/C3H8 Separation Performance On MOF ...

Enhanced C3H6/C3H8 separation performance on MOF membranes through blocking defects and hindering framework flexibility by silicone rubber coating†

Luqian Sheng,‡a Chongqing Wang,‡a Fan Yang,a Long Xiang,a Xiaojian Huang,a Jian Yu,a Lixiong Zhang,a Yichang Pan *a and Yanshuo Li *b Author affiliations

* Corresponding authors

a State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China E-mail: [email protected]

b The School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China E-mail: [email protected]

Abstract

The polydimethylsiloxane (PDMS) coating penetrated into the underneath ZIF-8 polycrystalline membrane not only blocking the inter-crystalline defects but also hindering the flexibility of the ZIF-8 framework, resulting in an unusual and highly desired increase in the separation selectivity of the C3H6/C3H8 mixture under high feeding pressures.

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