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Research Article | Open Access | Just Accepted

Synthesis of methanol via CO2 hydrogenation catalyzed by La2O2CO3/Cu catalysts

Jun He1,2Chenglong Yu1,3Zhijuan Zhao4Bo Guan4Bin Zhang1Yanru Zhang1,3Longbo Zhang1,3Yanyan Wang1,3Ying Wang1Yahui Wu1Jia Guo1,3Yang Li1,3Tianbin Wu1Qingli Qian1,3( )Hongxing Wang2( )Buxing Han1,3,5( )

1 Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Center for Carbon Neutral Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

2 College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China

3 School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China

4 Center for Physicochemical Analysis Measurements, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

5 Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China

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Abstract

The development of efficient Cu-based heterogeneous catalysts for CO2 hydrogenation to methanol has been an appealing subject. Inspired by the concept of inverse catalysts, a series of La2O2CO3/Cu nanorod composites with varying Cu content (denoted as LOC/Cu-x, where x stands for the mass ratio of La and Cu in the catalysts) were prepared by combining coprecipitation and calcination processes. Remarkable composition-dependence of catalytic activity and selectivity were observed when different LOC/Cu-x (x=0.1, 0.2, 0.5, 1, 3, 5) were used to catalyze the CO2 hydrogenation. The predominant product shifted from methane to methanol with the increasing Cu content. The highest reaction rate (13.3 mmol gCu-1h-1) and methanol selectivity (85.5 %) were achieved when LOC/Cu-1 was tested at 200 oC. The LOC was not active for the reaction, while the Cu itself displayed poor catalytic performance. The Cu-LOC interactions significantly affected the nature of the catalysts, including mutual electron transfer, crystal structure, morphology, porosity, surface Cu valance and capability of adsorbing the reactant gases, etc., which account for the outstanding behavior of the LOC/Cu-1 catalyst. This work provides a new strategy for the design and optimization of Cu-based catalysts.

Nano Research
Cite this article:
He J, Yu C, Zhao Z, et al. Synthesis of methanol via CO2 hydrogenation catalyzed by La2O2CO3/Cu catalysts. Nano Research, 2024, https://doi.org/10.26599/NR.2025.94907130

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Received: 15 September 2024
Revised: 08 November 2024
Accepted: 13 November 2024
Available online: 14 November 2024

© The author(s) 2025

This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the original author(s) and the source, provide a link to the license, and indicate if changes were made.

See https://creativecommons.org/licenses/by/4.0/

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