@article{Tian2026, 
author = {Fuhou Tian and Zhiwei Zhao and Xiaogang Yu and Jialong Dai and Xueliang Sheng and Yuhong Xu and Dan Yang and Leonid M. Kustov and Fei Wei and Yanhui Yang and Yihu Dai},
title = {Enhanced performance of Ru catalysts on high-entropy rare earth oxide supports for dry reforming of methane},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {8},
pages = {94908643},
keywords = {heterogeneous catalysis, methane dry reforming, Ru catalyst, high-entropy oxide (HEO), diffuse reflectance infrared Fourier transform (DRIFT) spectra},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94908643},
doi = {10.26599/NR.2026.94908643},
abstract = {Dry reforming of methane (DRM) is a promising route for the resource utilization of greenhouse gases; however, catalyst deactivation due to carbon deposition remains a major challenge. In this work, Ru-based catalysts supported on rare-earth high-entropy oxide (HEO, LaPrSmEuNdOx), medium-entropy oxide (MEO, LaPrSmOx), and single-component La2O3 were synthesized to investigate the role of configurational entropy of oxide support in catalytic performance and mechanism towards DRM reaction. Ru/HEO, featuring a fluorite structure and highly dispersed Ru sites, demonstrated superior activity, H2/CO ratio, and 50-h coke-resistant stability at 650 °C compared to Ru/MEO and Ru/La2O3. Catalytic studies, temperature-programmed characterizations, and spectral evidence revealed that Ru/HEO selectively activates CH4 via partial dissociation to CHx* and facilitates CO2 activation by proper surface basicity and enhanced oxygen mobility and oxygen vacancy density. The in-situ diffuse reflectance infrared Fourier transform (DRIFT) spectra identified the key reaction intermediates, confirming a cooperative conversion pathway of CH4 and CO2 on Ru/HEO for boosted activity and stability. This work provides insights into the entropy effect-driven structure design of active and anti-coking metal catalysts and mechanistic understanding of DRM reaction pathways.}
}