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Author(s): Frederico Relvas
Roger D. Whitley
Carlos Silva
Adélio Mendes
Title: Single-Stage Pressure Swing Adsorption for Producing Fuel Cell Grade Hydrogen
Issue Date: 2018
Abstract: High-purity hydrogen is needed for the growing market of hydrogen-based technologies, in particular for the automotive industry. Thus, efforts are needed to enhance the PSA performance to fulfill the needs of this emerging market. In the present work, a selective adsorbent for carbon monoxide was developed from a commercial activated carbon by wet impregnation of CuCl2 center dot 2H(2)O. Several samples were prepared and characterized concerning adsorption isotherms for H-2, CO2, CH4, and CO. The CO capacity was increased from 0.35 mol kg(ads)(-1) in the commercial sample to 1.25 mol kg(ads)(-1) in Cu-AC-2, at 40 degrees C and 1 bar. To attest the Cu-AC-2 performance, fixed-bed experiments were conducted namely mono- and multicomponent breakthrough. Finally, the adsorbent was tested in a 4-column lab-scale PSA unit for purifying a synthetic reformate mixture of 70% H-2, 25% CO2, 4% CH4, and 1% CO. After optimization, hydrogen with a purity +99.97% was obtained with a CO content of 0.17 ppm at a recovery of 76.2%. Such results meet the requirements for automotive industry regarding CO impurities.
Related Information: info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020 - Programas doutorais/NORTE-08-5369-FSE-000028/Programa de Doutoramento em Engenharia Química e Biológica (PDEQB)/PDEQB
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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