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Synthesis of methanol via CO <sub>2</sub> hydrogenation catalyzed by La <sub>2</sub>O <sub>2</sub>CO <sub>3</sub>/Cu catalysts

Jun HeCollege of Chemical Engineering and Materials Science,CHINA. Tianjin University of Science and Technology,CHINA. Key Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAChenglong YuKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Zhijuan ZhaoCenter for Physicochemical Analysis Measurements,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINABo GuanCenter for Physicochemical Analysis Measurements,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINABin ZhangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAYanru ZhangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Longbo ZhangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Yanyan WangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAYing WangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAYahui WuKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAJia GuoKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Li YangKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Tianbin WuKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINAQingli QianKey Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,Hongxing WangCollege of Chemical Engineering and Materials Science,CHINA. Tianjin University of Science and Technology,CHINABuxing HanShanghai Key Laboratory of Green Chemistry and Chemical Processes,CHINA. School of Chemistry and Molecular Engineering,CHINA. East China Normal University, 200062,CHINA. Key Laboratory of Colloid and Interface and Thermodynamics Department,CHINA. Institute of Chemistry, Chinese Academy of Sciences, 100190,CHINA. School of chemical sciences, University of Chinese Academy of Sciences,
Nano Researchjournal2024en
ABI

Abstract

The development of efficient Cu-based heterogeneous catalysts for CO<sub>2</sub> hydrogenation to methanol has been an appealing subject. Inspired by the concept of inverse catalysts, a series of La<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/Cu nanorod composites with varying Cu contents (denoted as LOC/Cu-<i>x</i>, where <i>x</i> 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-<i>x</i> (<i>x</i> = 0.1, 0.2, 0.5, 1, 3 and 5) were used to catalyze the CO<sub>2</sub> hydrogenation. The predominant product shifted from methane to methanol with the increasing Cu content. The highest reaction rate (13.3 mmol·g<sub>Cu</sub><sup>−1</sup>·h<sup>−1</sup>) and methanol selectivity (85.5%) were achieved when LOC/Cu-1 was tested at 200 °C. 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 valence 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.

Topics

Catalysts for Methane ReformingCatalytic Processes in Materials ScienceCarbon dioxide utilization in catalysis

Identifiers

DOI
10.26599/nr.2025.94907130

Citations and references

Cited by 054 references
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