Volume 133, Issue 48 pp. 25615-25622
Forschungsartikel

Single-Phase Formation of Rh2O3 Nanoparticles on h-BN Support for Highly Controlled Methane Partial Oxidation to Syngas

Younhwa Kim

Younhwa Kim

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Sungsu Kang

Sungsu Kang

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul, 08826 Republic of Korea

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Dohun Kang

Dohun Kang

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Kyung Rok Lee

Kyung Rok Lee

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Dr. Chyan Kyung Song

Dr. Chyan Kyung Song

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Jongbaek Sung

Jongbaek Sung

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Ji Soo Kim

Ji Soo Kim

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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Prof. Hyunjoo Lee

Prof. Hyunjoo Lee

Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701 Republic of Korea

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Prof. Jungwon Park

Corresponding Author

Prof. Jungwon Park

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

Center for Nanoparticle Research, Institute of Basic Science (IBS), Seoul, 08826 Republic of Korea

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Prof. Jongheop Yi

Corresponding Author

Prof. Jongheop Yi

School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul, 08826 Republic of Korea

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First published: 15 September 2021

Abstract

Single-phase formation of active metal oxides on supports has been vigorously pursued in many catalytic applications to suppress undesired reactions and to determine direct structure-property relationships. However, this is difficult to achieve in nanoscale range because the effect of non-uniform metal-support interfaces becomes dominant in the overall catalyst growth, leading to the nucleation of various metastable oxides. Herein, we develop a supported single-phase corundum-Rh2O3(I) nanocatalyst by utilizing controlled interaction between metal oxide and h-BN support. Atomic-resolution electron microscopy and first-principle calculation reveal that single-phase formation occurs via uniform and preferential attachment of Rh2O3(I) (110) seed planes on well-defined h-BN surface after decomposition of rhodium precursor. By utilizing the Rh/h-BN catalyst in methane partial oxidation, syngas is successfully produced solely following the direct route with keeping a H2/CO ratio of 2, which makes it ideal for most downstream chemical processes.

Conflict of interest

The authors declare no conflict of interest.

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