Results
Title

Single‐Phase Formation of Rh<sub>2</sub>O<sub>3</sub> Nanoparticles on h‐BN Support for Highly Controlled Methane Partial Oxidation to Syngas.

Authors

Kim, Younhwa; Kang, Sungsu; Kang, Dohun; Lee, Kyung Rok; Song, Chyan Kyung; Sung, Jongbaek; Kim, Ji Soo; Lee, Hyunjoo; Park, Jungwon; Yi, Jongheop

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.

Subjects

PARTIAL oxidation; CHEMICAL processes; SYNTHESIS gas; CATALYSTS; METALLIC oxides; STEAM reforming; NANOPARTICLES; METHANE

Publication

Angewandte Chemie, 2021, Vol 133, Issue 48, p25615

ISSN

0044-8249

Publication type

Academic Journal

DOI

10.1002/ange.202110292