An Organophilic Pervaporation Membrane Derived from Metal–Organic Framework Nanoparticles for Efficient Recovery of Bio‐Alcohols

Abstract

Dynamische Öffnungen und eine superhydrophobe Oberfläche begründen die außergewöhnliche Fähigkeit des Metall‐organischen Gerüsts ZIF‐8 zur selektiven Adsorption von Alkoholen. In eine Polymermatrix eingebettete ZIF‐8‐Nanopartikel wirken als bevorzugte Permeationspfade für organische Verbindungen, was in der effizienten Gewinnung von Bioalkoholen aus Fermentationsgemischen genutzt werden kann (siehe Bild).

Pervaporation and membrane reactor performance of polyimide based mixed matrix membranes containing MOF HKUST-1

“…In addition, MOF-5 has been used for organic solvent PV, showing separation of liquid organic molecules based on a molecular sieving effect (Kasik and Lin, 2014). Regarding ZIF-8 based membranes for PV, the performance of silicone rubber membranes has been improved for isobutanol (Liu et al, 2011) and furfural (Liu et al, 2013b) recovery from water by introducing ZIF-8 nanoparticles. ZIF-8 showed an exceptionally high capacity for these organic compounds, creating preferential pathways.…”

Enhanced pervaporation performance of MIL-101 (Cr) filled polysiloxane hybrid membranes in desulfurization of model gasoline

“…Zeolite imidazole frameworks (ZIFs, a subfamily of MOFs, Hayashi et al, 2007) have been used to fabricate hybrid membranes for pervaporation due to their outstanding stability and hydrophobicity. ZIF-8 and ZIF-71 were employed to improve the performance of poly (methyl phenyl) siloxane (PMPS, Liu et al, 2011), Pebax ™ (Liu et al, 2013b) and PDMS (Bai et al, 2013;Fan et al, 2014) membranes on separating ethanol and butanol from the fermentation broth of biofuel, since these two ZIFs have extraordinary hydrophobicity and consequently enhanced the preferential permeation of organic alcohols. Moreover, ZIF-7 was used to fabricate chitosan (CS)-based homogeneous hybrid membranes for dehydration of ethanol (Kang et al, 2013).…”

Thermodynamic and mechanistic studies on recovering phenol crystals from dilute aqueous solutions using pervaporation–crystallization coupling (PVCC) system

“…In addition, the phenol flux may be further improved by using composite membranes comprising of a dense, non-porous skin layer supported on a porous support. Recently, ultrathin and modified organophilic membranes (e.g., filled with zeolitic imidazolate frameworks nanoparticles) have attracted attention (Liu et al, 2011(Liu et al, , 2013Wang et al, 2013;Fan et al, 2014), which are expected to produce high fluxes while retaining a high selectivity. It is planned to develop ultrathin composite membranes for phenol separation, which will further improve the practicability of the PVCC process for industrial applications.…”