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Forced unsteady state operation for hydrogen separation through Pd-Ag membrane after start-up
Budhi Y.W.a, Rionaldo H.a, Padama A.A.B.b, Kasai H.b,c, Noezar I.a
a Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Department of Precision Science and Technology and Applied Physics, Suita Campus, Osaka University, Suita City, Osaka, 565-0871, Japan
c President of National Institute of Technology, Akashi College, Akashi, Hyogo, 974-8501, Japan
d Institute of Industrial Science, University of Tokyo, Komaba, Meguro, Tokyo, 153-8505, Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2015 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.A steady state hydrogen separation through a Pd-Ag membrane from a gas mixture like synthesis gas may encounter a rapid decrease of hydrogen permeation due to interaction of hydrogen and nitrogen, which blocks the palladium surface. In this study, a dedicated composition modulation for enabling unsteady state operation of the feed gas was proposed to control the process of hydrogen permeation and improve the stability of the Pd-Ag membrane. The investigated parameters were focused on hydrogen recovery and deactivation time as influence of varying the switching time. The application of the unsteady state operation on Pd75-Ag25 membrane obviously showed the influence of the dynamic operation on the performance of H2 permeation, which decreased or increased, depending on the switching times. The unsteady operation with switching times 1 and 5 min resulted in the H2 recovery of 27% and 24%, respectively, without showing any deactivation times. It has also been observed during experiment that the unsteady state operation of the Pd75-Ag25 membrane for hydrogen separation could show better performance compared to steady state operation if proper transient operation procedure could be developed.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Composition modulations,Hydrogen permeation,Hydrogen separation,Steady-state operation,Switching time,Transient operation,Unsteady state,Unsteady-state operation[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Hydrogen permeation,Membrane,Palladium,Switching time,Unsteady state[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The financial support provided by Overseas Research Collaboration and International Publication ( 081/SP2H/PL/Dit.Litabmas/II/2015 ), Directorate General of Higher Education, Republic of Indonesia, year 2015, is gratefully acknowledged.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.ijhydene.2015.05.182[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]