Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation
Several Cu and Ni samples, supported over Pr-promoted ceria, were characterized and tested as water gas shift (WGS) catalysts in the temperature range 250–450 °C. Three metal loadings were studied, 5, 10 and 20 wt%. Redox (TPR) and textural (XRD and BET) properties were correlated with the observed...
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todo:paper_18785190_v121_n2_p607_PoggioFraccari2023-10-03T16:34:19Z Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation Poggio-Fraccari, E. Giunta, P. Baronetti, G. Mariño, F. Copper nickel catalysts Hydrogen purification Reactor design Water gas shift Air purification Catalyst activity Catalysts Chemical shift Fischer-Tropsch synthesis Hydrogenation Kinetics Metals Methanation Nickel Surface segregation Copper nickels Hydrogen purification Kinetic expression Lower temperatures Reactor designs Reactor simulation Water gas shift (WGS) reaction Water gas shift catalysts Water gas shift Several Cu and Ni samples, supported over Pr-promoted ceria, were characterized and tested as water gas shift (WGS) catalysts in the temperature range 250–450 °C. Three metal loadings were studied, 5, 10 and 20 wt%. Redox (TPR) and textural (XRD and BET) properties were correlated with the observed catalytic behavior. The activity clearly increased with metal loading (Cu or Ni) from 5 to 10 wt%, but no major changes were observed between mid and high metal loading samples, 10 and 20 wt%. This might be due to appreciable metal segregation over support surface as Cu or Ni content increases. For Ni-containing samples, CH4 was found at the reactor outlet stream, showing that CO methanation also takes place. For 10 wt% total metal content, kinetic expressions for monometallic Cu and Ni catalysts, and a bimetallic CuNi were proposed and fitted simultaneously for both WGS and the CO methanation reaction. Then, the kinetic expressions were used to model a reactor scheme where the main goal was the minimization of the required catalyst mass for a given CO conversion. It can be concluded that the most promissory scheme consists of two reactors, the first operating with the CuNi catalyst at high temperature and the second with the Cu catalyst at a lower temperature. © 2017, Akadémiai Kiadó, Budapest, Hungary. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_18785190_v121_n2_p607_PoggioFraccari |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Copper nickel catalysts Hydrogen purification Reactor design Water gas shift Air purification Catalyst activity Catalysts Chemical shift Fischer-Tropsch synthesis Hydrogenation Kinetics Metals Methanation Nickel Surface segregation Copper nickels Hydrogen purification Kinetic expression Lower temperatures Reactor designs Reactor simulation Water gas shift (WGS) reaction Water gas shift catalysts Water gas shift |
| spellingShingle |
Copper nickel catalysts Hydrogen purification Reactor design Water gas shift Air purification Catalyst activity Catalysts Chemical shift Fischer-Tropsch synthesis Hydrogenation Kinetics Metals Methanation Nickel Surface segregation Copper nickels Hydrogen purification Kinetic expression Lower temperatures Reactor designs Reactor simulation Water gas shift (WGS) reaction Water gas shift catalysts Water gas shift Poggio-Fraccari, E. Giunta, P. Baronetti, G. Mariño, F. Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| topic_facet |
Copper nickel catalysts Hydrogen purification Reactor design Water gas shift Air purification Catalyst activity Catalysts Chemical shift Fischer-Tropsch synthesis Hydrogenation Kinetics Metals Methanation Nickel Surface segregation Copper nickels Hydrogen purification Kinetic expression Lower temperatures Reactor designs Reactor simulation Water gas shift (WGS) reaction Water gas shift catalysts Water gas shift |
| description |
Several Cu and Ni samples, supported over Pr-promoted ceria, were characterized and tested as water gas shift (WGS) catalysts in the temperature range 250–450 °C. Three metal loadings were studied, 5, 10 and 20 wt%. Redox (TPR) and textural (XRD and BET) properties were correlated with the observed catalytic behavior. The activity clearly increased with metal loading (Cu or Ni) from 5 to 10 wt%, but no major changes were observed between mid and high metal loading samples, 10 and 20 wt%. This might be due to appreciable metal segregation over support surface as Cu or Ni content increases. For Ni-containing samples, CH4 was found at the reactor outlet stream, showing that CO methanation also takes place. For 10 wt% total metal content, kinetic expressions for monometallic Cu and Ni catalysts, and a bimetallic CuNi were proposed and fitted simultaneously for both WGS and the CO methanation reaction. Then, the kinetic expressions were used to model a reactor scheme where the main goal was the minimization of the required catalyst mass for a given CO conversion. It can be concluded that the most promissory scheme consists of two reactors, the first operating with the CuNi catalyst at high temperature and the second with the Cu catalyst at a lower temperature. © 2017, Akadémiai Kiadó, Budapest, Hungary. |
| format |
JOUR |
| author |
Poggio-Fraccari, E. Giunta, P. Baronetti, G. Mariño, F. |
| author_facet |
Poggio-Fraccari, E. Giunta, P. Baronetti, G. Mariño, F. |
| author_sort |
Poggio-Fraccari, E. |
| title |
Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| title_short |
Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| title_full |
Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| title_fullStr |
Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| title_full_unstemmed |
Cu and/or Ni catalysts over CePr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| title_sort |
cu and/or ni catalysts over cepr oxide for the water gas shift reaction: an experimental study, kinetic fitting and reactor simulation |
| url |
http://hdl.handle.net/20.500.12110/paper_18785190_v121_n2_p607_PoggioFraccari |
| work_keys_str_mv |
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| _version_ |
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