Abstract
This research involved carrying out a unique micro-mesoporous carbon particle incorporation into P84 co-polyimide membrane for improved gas separation performance. The carbon filler was prepared using a hard template method from zeolite and known as zeolite-templated carbon (ZTC). This research aims to study the loading amount of ZTC into P84 co-polyimide toward the gas separation performance. The ZTC was prepared using simple impregnation method of sucrose into hard template of zeolite Y. The SEM result showing a dispersed ZTC particle on the membrane surface and cross-section. The pore size distribution (PSD) of ZTC revealed that the particle consists of two characteristics of micro and mesoporous region. It was noted that with only 0.5 wt% of ZTC addition, the permeability was boosted up from 4.68 to 7.06 and from 8.95 to 13.15 barrer, for CO2 and H2 respectively when compared with the neat membrane. On the other hand, the optimum loading was at 1 wt%, where the membrane received thermal stability boost of 10% along with the 62.4 and 35% of selectivity boost of CO2/CH4 and H2/CH4, respectively. It was noted that the position of the filler on the membrane surface was significantly affecting the gas transport mechanism of the membrane. Overall, the results demonstrated that the addition of ZTC with proper filler position is a potential candidate to be applicable in the gas separation involving CO2 and H2.
Highlights
This article has been edited by the Royal Society of Chemistry, including the commissioning, peer review process and editorial aspects up to the point of acceptance
The results demonstrated that the addition of zeolite-templated carbon (ZTC) with proper filler position is a potential candidate to be applicable in the gas separation involving CO2 and H2
This research has conducted the effect of ZTC loading towards the gas separation performance of P84 copolyimide membrane
Summary
This article has been edited by the Royal Society of Chemistry, including the commissioning, peer review process and editorial aspects up to the point of acceptance. Polymeric membrane for gas separation has a lot of drawbacks, especially in the trade-off between permeability and selectivity [13,14] To overcome those drawbacks, many researchers tried to fix that by blending polymers [15] and preparing composite membrane [12,16]. Increasing or limiting the diffusion of gases in the membrane should improve the permeability and selectivity Nanoporous material such as silica [19,20], zeolites [21,22], metal-organic framework (MOF) [23], graphene [24,25,26,27] and carbon nanotube [28,29] have been reported to form composite membrane. There are still technical challenges to be met such as avoiding pinhole formation and incompatibility issues with a polymer precursor
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