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https://hdl.handle.net/10216/103870
Author(s): | Miguel N. Moreira Ana M. Ribeiro Adelino F. Cunha Alírio E. Rodrigues Maxim Zabilskiy Petar Djinovic Albin Pintar |
Title: | Copper based materials for water-gas shift equilibrium displacement |
Issue Date: | 2016 |
Abstract: | Water-gas shift reaction and sorption enhanced water-gas shift were studied over Cu-CeO2 and Cu-HTlc catalysts in the temperature range between 125 and 295 degrees C. The catalysts were characterized by N-2 sorption, XRD, H-2-TPR and SEM techniques. Among the tested catalysts, copper supported on polyhedral ceria nanoparticles showed the highest activity, achieving 87.6% CO conversion. High dispersion of copper was identified as a catalyst property required for high WGS activity. During SE-WGS tests using either a multilayer arrangement of Cu-CeO2 catalyst and K-HTlc sorbent, or Cu promoted hydrotalcite hybrid catalyst, nearly 70 mol% H-2 was obtained in the product gas stream during the initial transient period. Elevated pressure and surplus of steam in the feed increased the sorption capacity of K-HTlc, resulting in delayed CO2 breakthrough. On the other hand, dilution of feed stream with inert gas (He) resulted in a dramatic decrease of sorbent's capacity leading to an early CO2 breakthrough. |
URI: | https://hdl.handle.net/10216/103870 |
Related Information: | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/50020/2013- POCI-01-0145-FEDER-006984/Laboratório de Processos de Separação e Reação - Laboratório de Catálise e Materiais/LSRE-LCM |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
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189591.pdf Restricted Access | 1.9 MB | Adobe PDF | Request a copy from the Author(s) |
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