Pt-Ce0.9Cu0.1O2/activated carbon as highly active and stable HI decomposition catalyst

Wachirapun Punkrawee; Azusa Yamanaka; Junko Matsuda; Yukiko Mitoma; Noriko Nishiyama; Tatsumi Ishihara

doi:10.1002/er.3903

Pt-Ce_0.9Cu_0.1O₂/activated carbon as highly active and stable HI decomposition catalyst

Wachirapun Punkrawee, Azusa Yamanaka, Junko Matsuda, Yukiko Mitoma, Noriko Nishiyama, Tatsumi Ishihara

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

2 Citations (Scopus)

Abstract

Effects of additives to Pt-CeO₂/activated carbon (M563) catalysts on HI decomposition were studied. Among the additives studied, it was found that the addition of Cu to Pt-CeO₂ is the most effective for increasing the catalytic activity to HI decomposition. On this catalyst, almost the equilibrium hydrogen iodide (HI) conversion was achieved at temperature higher than 573 K. Cu addition increased Pt dispersion by anchoring effects. Therefore, in spite of decreased Brunauer-Emmett-Teller surface area of the catalyst, dispersion of Pt was much increased by addition of Cu resulting in the increased HI decomposition activity and stability. Because formed I₂ adsorbed on the catalyst at initial ca 20 hours, HI conversion was higher than that of the equilibrium one; however, after 20 hours, stable HI decomposition conversion that was almost the same with equilibrium conversion was achieved in the examined temperature range.

Original language	English
Pages (from-to)	1088-1097
Number of pages	10
Journal	International Journal of Energy Research
Volume	42
Issue number	3
DOIs	https://doi.org/10.1002/er.3903
Publication status	Published - Mar 10 2018

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/er.3903

Cite this

@article{f7add102b8dc45e69f6277f515ce6fc5,

title = "Pt-Ce0.9Cu0.1O2/activated carbon as highly active and stable HI decomposition catalyst",

abstract = "Effects of additives to Pt-CeO2/activated carbon (M563) catalysts on HI decomposition were studied. Among the additives studied, it was found that the addition of Cu to Pt-CeO2 is the most effective for increasing the catalytic activity to HI decomposition. On this catalyst, almost the equilibrium hydrogen iodide (HI) conversion was achieved at temperature higher than 573 K. Cu addition increased Pt dispersion by anchoring effects. Therefore, in spite of decreased Brunauer-Emmett-Teller surface area of the catalyst, dispersion of Pt was much increased by addition of Cu resulting in the increased HI decomposition activity and stability. Because formed I2 adsorbed on the catalyst at initial ca 20 hours, HI conversion was higher than that of the equilibrium one; however, after 20 hours, stable HI decomposition conversion that was almost the same with equilibrium conversion was achieved in the examined temperature range.",

author = "Wachirapun Punkrawee and Azusa Yamanaka and Junko Matsuda and Yukiko Mitoma and Noriko Nishiyama and Tatsumi Ishihara",

note = "Funding Information: This work was supported by the Council for Science, Technology, and Innovation (CSTI), Cross‐ministerial Strategic Innovation Promotion Program (SIP), and “Energy Carriers” (Funding agency JST). Publisher Copyright: Copyright {\textcopyright} 2017 John Wiley & Sons, Ltd.",

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doi = "10.1002/er.3903",

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T1 - Pt-Ce0.9Cu0.1O2/activated carbon as highly active and stable HI decomposition catalyst

AU - Punkrawee, Wachirapun

AU - Yamanaka, Azusa

AU - Matsuda, Junko

AU - Mitoma, Yukiko

AU - Nishiyama, Noriko

AU - Ishihara, Tatsumi

N1 - Funding Information: This work was supported by the Council for Science, Technology, and Innovation (CSTI), Cross‐ministerial Strategic Innovation Promotion Program (SIP), and “Energy Carriers” (Funding agency JST). Publisher Copyright: Copyright © 2017 John Wiley & Sons, Ltd.

PY - 2018/3/10

Y1 - 2018/3/10

N2 - Effects of additives to Pt-CeO2/activated carbon (M563) catalysts on HI decomposition were studied. Among the additives studied, it was found that the addition of Cu to Pt-CeO2 is the most effective for increasing the catalytic activity to HI decomposition. On this catalyst, almost the equilibrium hydrogen iodide (HI) conversion was achieved at temperature higher than 573 K. Cu addition increased Pt dispersion by anchoring effects. Therefore, in spite of decreased Brunauer-Emmett-Teller surface area of the catalyst, dispersion of Pt was much increased by addition of Cu resulting in the increased HI decomposition activity and stability. Because formed I2 adsorbed on the catalyst at initial ca 20 hours, HI conversion was higher than that of the equilibrium one; however, after 20 hours, stable HI decomposition conversion that was almost the same with equilibrium conversion was achieved in the examined temperature range.

AB - Effects of additives to Pt-CeO2/activated carbon (M563) catalysts on HI decomposition were studied. Among the additives studied, it was found that the addition of Cu to Pt-CeO2 is the most effective for increasing the catalytic activity to HI decomposition. On this catalyst, almost the equilibrium hydrogen iodide (HI) conversion was achieved at temperature higher than 573 K. Cu addition increased Pt dispersion by anchoring effects. Therefore, in spite of decreased Brunauer-Emmett-Teller surface area of the catalyst, dispersion of Pt was much increased by addition of Cu resulting in the increased HI decomposition activity and stability. Because formed I2 adsorbed on the catalyst at initial ca 20 hours, HI conversion was higher than that of the equilibrium one; however, after 20 hours, stable HI decomposition conversion that was almost the same with equilibrium conversion was achieved in the examined temperature range.

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