Experimental evaluation of graphene oxide/TiO2-alumina nanocomposite membranes performance for hydrogen separation |
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| Affiliation: | 1. Faculty of Chemical Engineering, Urmia University of Technology, Urmia, Iran;2. Institute on Membrane Technology of the Italian National Research Council (CNR-ITM), via P. Bucci cubo 17/C, 87036 Rende (CS), Italy;1. Institute of Science and Technology for Ceramics, National Council of Research (ISTEC-CNR), Via Granarolo 64, 48018, Faenza, Italy;2. Instituto de Tecnología Química (Universitat Politècnica de València-Consejo Superior de Investigaciones Cientifícas), Av. Los Naranjos s/n, E-46022, Valencia, Spain;1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, South Puzhu Road 30, Nanjing 211816, China;2. GaoQ Functional Materials Co., Ltd., Kechuang Avenue 9, Jiangbei New Area, Nanjing 211505, China;3. Sinopec Nanjing Chemical Research Institute Co., Ltd, Geguan Road 699, Nanjing 210048, China;1. Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor Darul Takzim, Malaysia;2. Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia;3. Department of Chemical Engineering, Faculty of Engineering, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia;1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China;2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300350, PR China |
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| Abstract: | In recent years, graphene oxide membranes showed interesting performances in terms of high permeating flux and perm-selectivity in several applications of gas separation because of their inherent properties combined to a low energy consumption. In this paper, a graphene oxide layer is coated on modified TiO2-alumina tubular substrate in order to prepare graphene oxide nanocomposite membranes useful for hydrogen separation. Nanocomposite graphene oxide membrane samples were obtained by using vacuum deep coating method, depositing the graphene oxide solution as single layers on TiO2-alumina substrate. Temperature and pressure variations were evaluated to achieve high H2 permeance, high H2/CO2 selectivity and membrane performance stability during the experimental tests. Furthermore, it was found that the temperature increase causes a perm-selectivity (H2/N2 and H2/CO2) decrease, while the transmembrane pressure increase involves a general improvement of the perm-selectivity. |
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| Keywords: | Hydrogen separation Nanocomposite graphene oxide membrane |
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