Carbon dioxide reforming of methane over co-precipitated Ni-Ce-ZrO2 catalysts

H. S. Potdar; Hyun Seog Roh; Ki Won Jun; Min Ji; Zhong Wen Liu

doi:10.1023/A:1021036920308

Carbon dioxide reforming of methane over co-precipitated Ni-Ce-ZrO₂ catalysts

H. S. Potdar, Hyun Seog Roh, Ki Won Jun, Min Ji, Zhong Wen Liu

Division of Environmental Engineering

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

79 Citations (Scopus)

Abstract

An active and relatively stable Ni-Ce-ZrO₂ catalyst has been designed and prepared conveniently by a novel one-step co-precipitation/digestion method. This catalyst exhibited higher stability compared with a catalyst having the same composition but prepared using the conventional impregnation method. It was found that 15% Ni (w/w) co-precipitated with Ce-ZrO₂ making the cubic phase of Ce_0.8Zr_0.2O₂ gave synthesis gas with CH₄ conversion more than 97% at 800°C and that the activity was maintained for 100 h during the reaction. The higher activity, conversion and stability of these catalysts are mainly related to the nano-crystalline nature of cubic Ce_1-xZr_xO₂ producing strong interaction with finely dispersed nano-sized NiO_x crystallites.

Original language	English
Pages (from-to)	95-100
Number of pages	6
Journal	Catalysis Letters
Volume	84
Issue number	1-2
DOIs	https://doi.org/10.1023/A:1021036920308
Publication status	Published - 2002 Nov

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

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abstract = "An active and relatively stable Ni-Ce-ZrO2 catalyst has been designed and prepared conveniently by a novel one-step co-precipitation/digestion method. This catalyst exhibited higher stability compared with a catalyst having the same composition but prepared using the conventional impregnation method. It was found that 15% Ni (w/w) co-precipitated with Ce-ZrO2 making the cubic phase of Ce0.8Zr0.2O2 gave synthesis gas with CH4 conversion more than 97% at 800°C and that the activity was maintained for 100 h during the reaction. The higher activity, conversion and stability of these catalysts are mainly related to the nano-crystalline nature of cubic Ce1-xZrxO2 producing strong interaction with finely dispersed nano-sized NiOx crystallites.",

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AU - Potdar, H. S.

AU - Roh, Hyun Seog

AU - Jun, Ki Won

AU - Ji, Min

AU - Liu, Zhong Wen

PY - 2002/11

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N2 - An active and relatively stable Ni-Ce-ZrO2 catalyst has been designed and prepared conveniently by a novel one-step co-precipitation/digestion method. This catalyst exhibited higher stability compared with a catalyst having the same composition but prepared using the conventional impregnation method. It was found that 15% Ni (w/w) co-precipitated with Ce-ZrO2 making the cubic phase of Ce0.8Zr0.2O2 gave synthesis gas with CH4 conversion more than 97% at 800°C and that the activity was maintained for 100 h during the reaction. The higher activity, conversion and stability of these catalysts are mainly related to the nano-crystalline nature of cubic Ce1-xZrxO2 producing strong interaction with finely dispersed nano-sized NiOx crystallites.

AB - An active and relatively stable Ni-Ce-ZrO2 catalyst has been designed and prepared conveniently by a novel one-step co-precipitation/digestion method. This catalyst exhibited higher stability compared with a catalyst having the same composition but prepared using the conventional impregnation method. It was found that 15% Ni (w/w) co-precipitated with Ce-ZrO2 making the cubic phase of Ce0.8Zr0.2O2 gave synthesis gas with CH4 conversion more than 97% at 800°C and that the activity was maintained for 100 h during the reaction. The higher activity, conversion and stability of these catalysts are mainly related to the nano-crystalline nature of cubic Ce1-xZrxO2 producing strong interaction with finely dispersed nano-sized NiOx crystallites.

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Carbon dioxide reforming of methane over co-precipitated Ni-Ce-ZrO₂ catalysts

Abstract

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