Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction

Liu, Shicheng; Hu, Yinjie; Zhang, Qian; Tan, Xia; Cui, Haonan; Li, Fei; Lei, Huibin; Zhuo, Ou

doi:10.3390/catal15060546

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Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction

by

Shicheng Liu

¹,

Yinjie Hu

¹,

Qian Zhang

¹,

Xia Tan

¹,

Haonan Cui

¹,

Fei Li

^1,2,

Huibin Lei

^1,2 and

Ou Zhuo

^1,2,*

¹

College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China

²

Hunan Province Key Laboratory of Mineral Cleaner Production and Green Functional Materials, Jishou University, Jishou 416000, China

^*

Author to whom correspondence should be addressed.

Catalysts 2025, 15(6), 546; https://doi.org/10.3390/catal15060546 (registering DOI)

Submission received: 5 May 2025 / Revised: 26 May 2025 / Accepted: 29 May 2025 / Published: 30 May 2025

(This article belongs to the Special Issue Sustainable Catalysis for Green Chemistry and Energy Transition)

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Abstract

Cu-based layered double hydroxides (LDH) have been extensively employed as catalyst precursors. However, due to the Jahn–Teller effect of copper ions, it is a challenge to synthesize well-crystallized LDH with a high Cu content, which usually contains considerable CuO impurity. By adding competitive ligands during the coprecipitation process, such as glycine, a well-crystallized Cu-rich LDH with less CuO impurity was successfully synthesized. The Cu-Mg-Al mixed oxides derived from the well-crystallized Cu-rich LDH have relatively high S_BET, large pore volume, and well dispersion of Cu nanoparticles. The derived catalyst exhibited unexpectedly high catalytic activity in the water–gas shift (WGS) reaction, and the mass-specific reaction rate was reached as high as 33.5 μmol_CO·g−1 cat·s⁻¹ at 200 °C. The high catalytic activity of this catalyst may originate from the high S_BET and well dispersion of Cu particles and metal oxides. Moreover, the derived catalyst also displayed outstanding long-term stability in the WGS reaction, which should benefit from the enhanced metal–support interaction.

Keywords: water-gas shift reaction; layered double hydroxides; Cu catalyst

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MDPI and ACS Style

Liu, S.; Hu, Y.; Zhang, Q.; Tan, X.; Cui, H.; Li, F.; Lei, H.; Zhuo, O. Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction. Catalysts 2025, 15, 546. https://doi.org/10.3390/catal15060546

AMA Style

Liu S, Hu Y, Zhang Q, Tan X, Cui H, Li F, Lei H, Zhuo O. Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction. Catalysts. 2025; 15(6):546. https://doi.org/10.3390/catal15060546

Chicago/Turabian Style

Liu, Shicheng, Yinjie Hu, Qian Zhang, Xia Tan, Haonan Cui, Fei Li, Huibin Lei, and Ou Zhuo. 2025. "Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction" Catalysts 15, no. 6: 546. https://doi.org/10.3390/catal15060546

APA Style

Liu, S., Hu, Y., Zhang, Q., Tan, X., Cui, H., Li, F., Lei, H., & Zhuo, O. (2025). Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction. Catalysts, 15(6), 546. https://doi.org/10.3390/catal15060546

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Synthesis of Well-Crystallized Cu-Rich Layered Double Hydroxides and Improved Catalytic Performances for Water–Gas Shift Reaction

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