Effect of aluminium acetyl acetonate on the hydrogen and nitrogen permeation of carbon molecular sieves membranes
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2022-04-15
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Abstract
With a growing interest in hydrogen as energy carrier, the efficient purification of hydrogen from gaseous mixtures is very important. This paper addresses the separation of hydrogen using Carbon Molecular Sieves Membranes (CMSM), which show an attractive combination of high permeability, selectivity and stability. Supported CMSM containing various amounts of aluminium have been prepared from novolac and aluminium acetyl acetonate (Al(acac)3) as carbon and alumina precursors. The thickness of the CMSM layers depend on the content of Al(acac)3 in the dipping solution, which also has influence in the pore size and pore size distribution of the membranes. The permeation properties of the membranes against the Al content in the membrane follows a volcano shape, where the membrane containing 4 wt (%) of Al(acac)3 has the best properties and was stable during 720 h for hydrogen at 150 °C and 6 bar pressure difference. All the CMSM have permeation properties well above the Robeson Upper limit.
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Publisher Copyright: © 2022 The Author(s)
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Carbon membranes , Hydrogen separation , Novolac resin , Supported carbon membranes , Carbon membranes , Hydrogen separation , Novolac resin , Supported carbon membranes , Renewable Energy, Sustainability and the Environment , Fuel Technology , Condensed Matter Physics , Energy Engineering and Power Technology , Funding Info , The research has been carried out within the TTW Perspectief Programme “Microsync” project number P16-10. , The research has been carried out within the TTW Perspectief Programme “Microsync” project number P16-10.
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Rahimalimamaghani , A , Pacheco Tanaka , D A , Llosa Tanco , M A , Neira D'Angelo , F & Gallucci , F 2022 , ' Effect of aluminium acetyl acetonate on the hydrogen and nitrogen permeation of carbon molecular sieves membranes ' , International Journal of Hydrogen Energy , vol. 47 , no. 32 , pp. 14570-14579 . https://doi.org/10.1016/j.ijhydene.2022.02.198