Effects of Metal Doping on the Structure and Water–Gas Shift Reaction Performance of Copper–Manganese Catalysts
- 1Department of Chemical Engineering, Inner Mongolia Vocational College of Chemical Engineering, Hohhot 010070, China
- 2College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
Abstract
Cu-Mn catalysts modified with Zr, Ce, Fe, Al, and Zn were prepared by co-precipitation and evaluated for the water–gas shift reaction (WGSR) using a common conditioning and cooling protocol. Among the tested compositions, the 5 mol% Zr sample gave the highest reported mean CO conversion at 200 °C, 60.1%, compared with 23.1% for undoped CuMn. XRD, BET, H2-TPR, NH3-TPD, N2O-assisted surface reduction (s-TPR), and XPS were used to compare phase composition and surface properties. Within the Zr series, the 5 mol% sample also had the largest model-derived Cu surface area per catalyst mass, 44.1 m2 g−1, whereas the apparent fractional Cu dispersion was highest at 8 mol% Zr. CO conversion did not increase monotonically with Zr loading, and the higher-conversion 5 mol% sample had larger spent Cu crystallites than undoped CuMn. These comparisons distinguish nominal loading, fractional dispersion, and mass-specific Cu area as separate descriptors when relating composition to WGSR performance. Mechanistic interpretations and long-term durability require further evidence.
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BibTeX
@article{wu2026effects,
title = {{Effects of Metal Doping on the Structure and Water–Gas Shift Reaction Performance of Copper–Manganese Catalysts}},
author = {Fang Wu and Runxia He and Qianqian Hu and Gao Saishengtai},
journal = {Molecules},
year = {2026},
month = oct,
doi = {10.3390/molecules31203630},
url = {https://www.mdpi.com/1420-3049/31/20/3630},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Effects of Metal Doping on the Structure and Water–Gas Shift Reaction Performance of Copper–Manganese Catalysts
AU - Fang Wu
AU - Runxia He
AU - Qianqian Hu
AU - Gao Saishengtai
PY - 2026
DA - 2026/10/01
JO - Molecules
DO - 10.3390/molecules31203630
UR - https://www.mdpi.com/1420-3049/31/20/3630
AB - Cu-Mn catalysts modified with Zr, Ce, Fe, Al, and Zn were prepared by co-precipitation and evaluated for the water–gas shift reaction (WGSR) using a common conditioning and cooling protocol. Among the tested compositions, the 5 mol% Zr sample gave the highest reported mean CO conversion at 200 °C, 60.1%, compared with 23.1% for undoped CuMn. XRD, BET, H2-TPR, NH3-TPD, N2O-assisted surface reduction (s-TPR), and XPS were used to compare phase composition and surface properties. Within the Zr series, the 5 mol% sample also had the largest model-derived Cu surface area per catalyst mass, 44.1 m2 g−1, whereas the apparent fractional Cu dispersion was highest at 8 mol% Zr. CO conversion did not increase monotonically with Zr loading, and the higher-conversion 5 mol% sample had larger spent Cu crystallites than undoped CuMn. These comparisons distinguish nominal loading, fractional dispersion, and mass-specific Cu area as separate descriptors when relating composition to WGSR performance. Mechanistic interpretations and long-term durability require further evidence.
SN - 1420-3049
ER -