Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis
Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalysts are extensively utilized in methanol synthesis from CO and CO<sub>2</sub>, which is a vital industrial process and a promising strategy for mitigating CO<sub>2</sub> emissions when renewable green hydrogen i...
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MDPI AG
2023-08-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/13/8/1190 |
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| author | Lirong Zhao Lunjia Zhang Zhaoxuan Wu Chaojie Huang Kuncheng Chen Hui Wang Fan Yang |
| author_facet | Lirong Zhao Lunjia Zhang Zhaoxuan Wu Chaojie Huang Kuncheng Chen Hui Wang Fan Yang |
| author_sort | Lirong Zhao |
| collection | DOAJ |
| description | Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalysts are extensively utilized in methanol synthesis from CO and CO<sub>2</sub>, which is a vital industrial process and a promising strategy for mitigating CO<sub>2</sub> emissions when renewable green hydrogen is employed. Despite the considerable efforts to study CO<sub>2</sub> hydrogenation over Cu/ZnO, understanding the structure of active sites on Cu/ZnO has remained a major challenge. We studied a series of Cu/ZnO catalysts with various Cu particle sizes and found a volcano-like pattern in methanol selectivity with respect to the Cu particle size. TEM, XPS, and TPD measurements demonstrated the migration of ZnO<sub>x</sub> species onto the Cu particle surface and showed a correlation between the ZnO<sub>x</sub>-Cu interface and methanol yield. The size of supported Cu particles affects the migration of Zn species onto Cu particle surfaces. Our study has thus explicated the role of the ZnO<sub>x</sub>-Cu interface in catalyzing CO<sub>2</sub> hydrogenation to methanol. |
| first_indexed | 2024-03-11T00:03:29Z |
| format | Article |
| id | doaj.art-8ca2998fd2ea4dbd9ab28dbb9d0002e6 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-11T00:03:29Z |
| publishDate | 2023-08-01 |
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| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-8ca2998fd2ea4dbd9ab28dbb9d0002e62023-11-19T00:35:30ZengMDPI AGCatalysts2073-43442023-08-01138119010.3390/catal13081190Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol SynthesisLirong Zhao0Lunjia Zhang1Zhaoxuan Wu2Chaojie Huang3Kuncheng Chen4Hui Wang5Fan Yang6School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaCAS Key Laboratory of Low-Carbon Conversion Science & Engineering, Chinese Academy of Sciences, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaCAS Key Laboratory of Low-Carbon Conversion Science & Engineering, Chinese Academy of Sciences, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaCu/ZnO/Al<sub>2</sub>O<sub>3</sub> catalysts are extensively utilized in methanol synthesis from CO and CO<sub>2</sub>, which is a vital industrial process and a promising strategy for mitigating CO<sub>2</sub> emissions when renewable green hydrogen is employed. Despite the considerable efforts to study CO<sub>2</sub> hydrogenation over Cu/ZnO, understanding the structure of active sites on Cu/ZnO has remained a major challenge. We studied a series of Cu/ZnO catalysts with various Cu particle sizes and found a volcano-like pattern in methanol selectivity with respect to the Cu particle size. TEM, XPS, and TPD measurements demonstrated the migration of ZnO<sub>x</sub> species onto the Cu particle surface and showed a correlation between the ZnO<sub>x</sub>-Cu interface and methanol yield. The size of supported Cu particles affects the migration of Zn species onto Cu particle surfaces. Our study has thus explicated the role of the ZnO<sub>x</sub>-Cu interface in catalyzing CO<sub>2</sub> hydrogenation to methanol.https://www.mdpi.com/2073-4344/13/8/1190CO<sub>2</sub> hydrogenationmethanol synthesisZnO<sub>x</sub>-Cu interfacesize effect |
| spellingShingle | Lirong Zhao Lunjia Zhang Zhaoxuan Wu Chaojie Huang Kuncheng Chen Hui Wang Fan Yang Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis Catalysts CO<sub>2</sub> hydrogenation methanol synthesis ZnO<sub>x</sub>-Cu interface size effect |
| title | Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis |
| title_full | Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis |
| title_fullStr | Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis |
| title_full_unstemmed | Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis |
| title_short | Size Effect of Cu Particles on Interface Formation in Cu/ZnO Catalysts for Methanol Synthesis |
| title_sort | size effect of cu particles on interface formation in cu zno catalysts for methanol synthesis |
| topic | CO<sub>2</sub> hydrogenation methanol synthesis ZnO<sub>x</sub>-Cu interface size effect |
| url | https://www.mdpi.com/2073-4344/13/8/1190 |
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