Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst

Song Ho Cho; Jong Soo Park; Wang Lai Yoon; Ho Tae Lee; Seung Hoon Choi; Shin Kun Ryi; Sung Hyun Kim

doi:10.1016/j.catcom.2005.08.007

Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst

Song Ho Cho, Jong Soo Park, Wang Lai Yoon, Ho Tae Lee, Seung Hoon Choi, Shin Kun Ryi, Sung Hyun Kim

* Honorary professors

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

4 Citations (Scopus)

Abstract

The activities of Rh-Mg/Al₂O₃, Pt/ZrO₂ and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh-Mg/Al₂O₃ was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh-Mg/Al₂O₃ and Pt/ZrO₂ which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO₂ at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh-Mg/Al₂O₃ catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.

Original language	English
Pages (from-to)	42-46
Number of pages	5
Journal	Catalysis Communications
Volume	7
Issue number	1
DOIs	https://doi.org/10.1016/j.catcom.2005.08.007
Publication status	Published - 2006 Jan

Keywords

Autothermal reforming
Hysterisis
Physically mixed catalyst
Pt/ZrO
Rh-Mg/AlO

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Process Chemistry and Technology

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10.1016/j.catcom.2005.08.007

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title = "Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst",

abstract = "The activities of Rh-Mg/Al2O3, Pt/ZrO2 and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh-Mg/Al2O3 was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh-Mg/Al2O3 and Pt/ZrO2 which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO2 at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh-Mg/Al2O3 catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.",

keywords = "Autothermal reforming, Hysterisis, Physically mixed catalyst, Pt/ZrO, Rh-Mg/AlO",

author = "Cho, {Song Ho} and Park, {Jong Soo} and Yoon, {Wang Lai} and Lee, {Ho Tae} and Choi, {Seung Hoon} and Ryi, {Shin Kun} and Kim, {Sung Hyun}",

note = "Funding Information: The research was performed for the Carbon Dioxide Reduction and Sequestration R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.",

year = "2006",

month = jan,

doi = "10.1016/j.catcom.2005.08.007",

language = "English",

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AU - Cho, Song Ho

AU - Park, Jong Soo

AU - Yoon, Wang Lai

AU - Lee, Ho Tae

AU - Choi, Seung Hoon

AU - Ryi, Shin Kun

AU - Kim, Sung Hyun

N1 - Funding Information: The research was performed for the Carbon Dioxide Reduction and Sequestration R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.

PY - 2006/1

Y1 - 2006/1

N2 - The activities of Rh-Mg/Al2O3, Pt/ZrO2 and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh-Mg/Al2O3 was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh-Mg/Al2O3 and Pt/ZrO2 which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO2 at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh-Mg/Al2O3 catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.

AB - The activities of Rh-Mg/Al2O3, Pt/ZrO2 and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh-Mg/Al2O3 was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh-Mg/Al2O3 and Pt/ZrO2 which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO2 at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh-Mg/Al2O3 catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.

KW - Autothermal reforming

KW - Hysterisis

KW - Physically mixed catalyst

KW - Pt/ZrO

KW - Rh-Mg/AlO

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DO - 10.1016/j.catcom.2005.08.007

M3 - Article

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SN - 1566-7367

VL - 7

SP - 42

EP - 46

JO - Catalysis Communications

JF - Catalysis Communications

IS - 1

ER -

Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst

Abstract

Keywords

ASJC Scopus subject areas

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