Membrane adsorber with metal organic frameworks for sulphur removal

Abstract

Sulphur removal is significant for fuels used as hydrogen sources for modern fuel cell applications. A high performance membrane adsorber with metal organic frameworks (MOFs) has been fabricated. The architecture of the three-dimensional membrane channels provided multiple functional sites and an efficient method of incorporating [Cu 3 (BTC) 2 ] particles into a polyimide (PI) matrix. The properties of the MOF-based membrane adsorber, including the adsorption contribution, regeneration behavior and effect of fuel species, have been investigated. In all cases, the inlet fuel can be desulfurized to below 0.1 mg L 21 , which means that the outlet fuel can be used as a sulphur-free hydrogen source for fuel cell applications. The related discussions can propose some general suggestions for the separation of organic-organic mixtures involved in current energy and environmental problems. The desulfurization capabilities of the membrane adsorber are likely to play an influential role in the reduction of motor vehicle pollution and the development of fuel cells.

Highly permeable poly(4-methyl-1-pentyne)/NH2-MIL 53 (Al) mixed matrix membrane for CO2/CH4 separation

“…29 The main advantage of modied time lag method compared to time lag one (were D ¼ L 2 /6q) is that this method considers the effect of ller phase on gas diffusion in MMMs. It is worthwhile to mention that L 2 /6q can be derivate from eqn (5) for the case of neat membrane. In neat membrane, V d (the volume fraction of ller) equals to zero and eqn (5) gives time lag method equation.…”

“…It is worthwhile to mention that L 2 /6q can be derivate from eqn (5) for the case of neat membrane. In neat membrane, V d (the volume fraction of ller) equals to zero and eqn (5) gives time lag method equation.…”

“…4 However, the impact of novel materials such as metal organic frameworks (MOFs) on the performance of MMMs has not comprehensively studied. 5 MOFs are specic categories of materials which are composed of metal ions as connectors and organic bridging ligands as linkers. 5 Creating the non-selective voids at the llerpolymer interface caused that recent studies have turned to the usage of llers with higher affinity to polymer matrix.…”

“…5 MOFs are specic categories of materials which are composed of metal ions as connectors and organic bridging ligands as linkers. 5 Creating the non-selective voids at the llerpolymer interface caused that recent studies have turned to the usage of llers with higher affinity to polymer matrix. MOFs with broad functionalized ligands interact with polymer chain properly leading to prevention of non-selective voids in MOF and polymer interface.…”

Enhanced CO 2 /CH 4 separation properties of asymmetric mixed matrix membrane by incorporating nano-porous ZSM-5 and MIL-53 particles into Matrimid ® 5218

“…The existence of these organic linkages improves compatibility and adhesion between polymer and particles (Abedini et al, 2014b;Dorosti et al, 2011). Moreover, high adsorption properties of these materials make them a proper adsorbent for various applications (Lin et al, 2013). Ordonez et al (2010) fabricated Matrimid/ZIF-8 mixed matrix membrane with high MOF loading.…”