Catalyst deactivation and regeneration in low temperature ethanol steam reforming with Rh/CeO2-ZrO2 catalysts

Hyun Seog Roh; Alexandru Platon; Yong Wang; David L. King

doi:10.1007/s10562-006-0082-2

Catalyst deactivation and regeneration in low temperature ethanol steam reforming with Rh/CeO₂-ZrO₂ catalysts

Hyun Seog Roh, Alexandru Platon, Yong Wang, David L. King

Division of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

93 Citations (Scopus)

Abstract

Rh/CeO₂-ZrO₂ catalysts with various CeO ₂/ZrO₂ ratios have been applied to H₂ production from ethanol steam reforming at low temperatures. The catalysts all deactivated with time on stream (TOS) at 350°C. The addition of 0.5% K has a beneficial effect on catalyst stability, while 5% K has a negative effect on catalytic activity. The catalyst could be regenerated considerably even at ambient temperature and could recover its initial activity after regeneration above 200°C with 1% O₂. The results are most consistent with catalyst deactivation due to carbonaceous deposition on the catalyst.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Catalysis Letters
Volume	110
Issue number	1-2
DOIs	https://doi.org/10.1007/s10562-006-0082-2
Publication status	Published - 2006 Aug

Bibliographical note

Funding Information:
This work was supported by Department of Energy’s Office of Hydrogen, Fuel Cells, and Infrastructure Technologies. Most of work was performed in the Environmental Molecular Science Laboratory, a national scientific user facility sponsored by the U.S. Department of Energy’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory in Richland, WA.

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

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title = "Catalyst deactivation and regeneration in low temperature ethanol steam reforming with Rh/CeO2-ZrO2 catalysts",

abstract = "Rh/CeO2-ZrO2 catalysts with various CeO 2/ZrO2 ratios have been applied to H2 production from ethanol steam reforming at low temperatures. The catalysts all deactivated with time on stream (TOS) at 350°C. The addition of 0.5% K has a beneficial effect on catalyst stability, while 5% K has a negative effect on catalytic activity. The catalyst could be regenerated considerably even at ambient temperature and could recover its initial activity after regeneration above 200°C with 1% O2. The results are most consistent with catalyst deactivation due to carbonaceous deposition on the catalyst.",

author = "Roh, {Hyun Seog} and Alexandru Platon and Yong Wang and King, {David L.}",

note = "Funding Information: This work was supported by Department of Energy{\textquoteright}s Office of Hydrogen, Fuel Cells, and Infrastructure Technologies. Most of work was performed in the Environmental Molecular Science Laboratory, a national scientific user facility sponsored by the U.S. Department of Energy{\textquoteright}s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory in Richland, WA.",

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AU - Roh, Hyun Seog

AU - Platon, Alexandru

AU - Wang, Yong

AU - King, David L.

N1 - Funding Information: This work was supported by Department of Energy’s Office of Hydrogen, Fuel Cells, and Infrastructure Technologies. Most of work was performed in the Environmental Molecular Science Laboratory, a national scientific user facility sponsored by the U.S. Department of Energy’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory in Richland, WA.

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AB - Rh/CeO2-ZrO2 catalysts with various CeO 2/ZrO2 ratios have been applied to H2 production from ethanol steam reforming at low temperatures. The catalysts all deactivated with time on stream (TOS) at 350°C. The addition of 0.5% K has a beneficial effect on catalyst stability, while 5% K has a negative effect on catalytic activity. The catalyst could be regenerated considerably even at ambient temperature and could recover its initial activity after regeneration above 200°C with 1% O2. The results are most consistent with catalyst deactivation due to carbonaceous deposition on the catalyst.

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