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Soomin Lim,Edoardo Magnone,Min Chang Shin,강정원,이관영,Chang-Hun Jeong,Jung Hoon Park 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-
A phase-inversion approach was used to manufacture Al2O3 hollow fibre supports, which were then sinteredat 1723 K. The electroless plating technique is developed to prepare palladium-coated Al2O3 hollowfibre membranes for hydrogen separation. Three different scaling-up configurations were produced andtested: single membrane, membrane unit obtained by assembling three membranes, and advanced membranemodule obtained by assembling twelve replaceable membranes. The hydrogen flux was investigatedunder vacuum and without vacuum using a feed gas of pure H2 (100%) and a binary feed gasmixture of H2 (80%) and CO2 (20%) at different feed gas pressures (100–800 kPa), feed gas rate (0.2–6. 0 L min1), and temperature (673–723 K). The hydrogen flux increases from 0.2162 mol m2 s1 (feedgas pressure = 600 kPa, feed gas rate = 0.2 L min1) to 0.4487 mol m2 s1 (feed gas pressure = 800 kPa, feed gas rate = 6.0 L min1) under the binary gas mixture at 723 K by switching from a single to theadvanced membrane module, while the hydrogen purity remains above 97.5% throughout the experiment. Some aspects about the scalability of palladium-coated Al2O3 hollow fibre membranes for hydrogenseparation are discussed.