The Role of Manganese in CeNi1−xMnxO₃ Nano-Crystalline Perovskites for Dry Reforming of Methane to Produce Syngas
Abstract
CeNiO3 catalyst and its modification with manganese were investigated for dry Reforming of methane (DRM) reaction. The experiments were performed at 700°C to examine the effect of manganese loading on catalyst activity and stability. A series of ternary perovskite-type oxides CeNi1−xMnxO₃ (x = 0, 0.2, 0.4, and 0.6) was synthesized by the self-combustion method. These samples were analyzed by several techniques, including X-ray diffraction (XRD), infrared spectroscopy (FTIR), N2 adsorption-desorption isotherm, scanning electron microscope (SEM - EDS), temperature programmed reduction(TPR )and thermogravimetric (TGA) analysis. The characterization results revealed the presence of the crystalline perovskite phase for all catalysts and an appropriate elemental composition. Catalytic activity decreased with increasing Mn content, with CeNiO₃ showing the highest conversion due to the high reducibility of Ni as indicated by the TPR analysis. While partial substitution of Ni by Mn was found to be highly beneficial in terms of stability. A carbon balance (Xc) equal to 100% was obtained over the substituted catalysts CeNi1−xMnxO₃ (x = 0.2, 0.4 and 0.6). This finding was further supported by thermogravimetric analysis (TGA) after 24 h of reaction, which revealed significant coke deposition (~25%) on the CeNiO₃ catalyst. In contrast, no carbon deposition was detected on the CeNi₀.4M0.6O3.
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BibTeX
@article{benlounes2026role,
title = {{The Role of Manganese in CeNi1−xMnxO₃ Nano-Crystalline Perovskites for Dry Reforming of Methane to Produce Syngas}},
author = {Ouarda Benlounes and Kahina Ikkour and Djamila Sellam and Mourad Halouane and Nora Yahi and Juliette Blanchard and Saremblé Kone Guira},
journal = {Catalysis Letters},
year = {2026},
month = sep,
doi = {10.1007/s10562-025-05270-8},
url = {https://hal.science/hal-05735004v1},
note = {CC BY-NC 4.0},
}
RIS
TY - JOUR
TI - The Role of Manganese in CeNi1−xMnxO₃ Nano-Crystalline Perovskites for Dry Reforming of Methane to Produce Syngas
AU - Ouarda Benlounes
AU - Kahina Ikkour
AU - Djamila Sellam
AU - Mourad Halouane
AU - Nora Yahi
AU - Juliette Blanchard
AU - Saremblé Kone Guira
PY - 2026
DA - 2026/09/02
JO - Catalysis Letters
DO - 10.1007/s10562-025-05270-8
UR - https://hal.science/hal-05735004v1
AB - CeNiO3 catalyst and its modification with manganese were investigated for dry Reforming of methane (DRM) reaction. The experiments were performed at 700°C to examine the effect of manganese loading on catalyst activity and stability. A series of ternary perovskite-type oxides CeNi1−xMnxO₃ (x = 0, 0.2, 0.4, and 0.6) was synthesized by the self-combustion method. These samples were analyzed by several techniques, including X-ray diffraction (XRD), infrared spectroscopy (FTIR), N2 adsorption-desorption isotherm, scanning electron microscope (SEM - EDS), temperature programmed reduction(TPR )and thermogravimetric (TGA) analysis. The characterization results revealed the presence of the crystalline perovskite phase for all catalysts and an appropriate elemental composition. Catalytic activity decreased with increasing Mn content, with CeNiO₃ showing the highest conversion due to the high reducibility of Ni as indicated by the TPR analysis. While partial substitution of Ni by Mn was found to be highly beneficial in terms of stability. A carbon balance (Xc) equal to 100% was obtained over the substituted catalysts CeNi1−xMnxO₃ (x = 0.2, 0.4 and 0.6). This finding was further supported by thermogravimetric analysis (TGA) after 24 h of reaction, which revealed significant coke deposition (~25%) on the CeNiO₃ catalyst. In contrast, no carbon deposition was detected on the CeNi₀.4M0.6O3.
SN - 1011-372X
SN - 1572-879X
ER -