Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol
Mitigation of anthropogenic CO<sub>2</sub> emissions possess a major global challenge for modern societies. Herein, catalytic solutions are meant to play a key role. Among the different catalysts for CO<sub>2</sub> conversion, Cu supported molybdenum carbide is receiving incr...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-10-01
|
| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/10/10/1213 |
| _version_ | 1797550447758671872 |
|---|---|
| author | Ana Belén Dongil Qi Zhang Laura Pastor-Pérez Tomás Ramírez-Reina Antonio Guerrero-Ruiz Inmaculada Rodríguez-Ramos |
| author_facet | Ana Belén Dongil Qi Zhang Laura Pastor-Pérez Tomás Ramírez-Reina Antonio Guerrero-Ruiz Inmaculada Rodríguez-Ramos |
| author_sort | Ana Belén Dongil |
| collection | DOAJ |
| description | Mitigation of anthropogenic CO<sub>2</sub> emissions possess a major global challenge for modern societies. Herein, catalytic solutions are meant to play a key role. Among the different catalysts for CO<sub>2</sub> conversion, Cu supported molybdenum carbide is receiving increasing attention. Hence, in the present communication, we show the activity, selectivity and stability of fresh-prepared β-Mo<sub>2</sub>C catalysts and compare the results with those of Cu/Mo<sub>2</sub>C, Cs/Mo<sub>2</sub>C and Cu/Cs/Mo<sub>2</sub>C in CO<sub>2</sub> hydrogenation reactions. The results show that all the catalysts were active, and the main reaction product was methanol. Copper, cesium and molybdenum interaction is observed, and cesium promoted the formation of metallic Mo on the fresh catalyst. The incorporation of copper is positive and improves the activity and selectivity to methanol. Additionally, the addition of cesium favored the formation of Mo<sup>0</sup> phase, which for the catalysts Cs/Mo<sub>2</sub>C seemed to be detrimental for the conversion and selectivity. Moreover, the catalysts promoted by copper and/or cesium underwent redox surface transformations during the reaction, these were more obvious for cesium doped catalysts, which diminished their catalytic performance. |
| first_indexed | 2024-03-10T15:29:26Z |
| format | Article |
| id | doaj.art-490dc2a46bfa4d76810e446c29fd95ec |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T15:29:26Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-490dc2a46bfa4d76810e446c29fd95ec2023-11-20T17:44:38ZengMDPI AGCatalysts2073-43442020-10-011010121310.3390/catal10101213Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to MethanolAna Belén Dongil0Qi Zhang1Laura Pastor-Pérez2Tomás Ramírez-Reina3Antonio Guerrero-Ruiz4Inmaculada Rodríguez-Ramos5Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, SpainDepartment of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UKDepartment of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UKDepartment of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UKDpto. Química Inorgánica y Técnica, Facultad de Ciencias UNED, Senda del Rey 9, 28040 Madrid, SpainInstituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, SpainMitigation of anthropogenic CO<sub>2</sub> emissions possess a major global challenge for modern societies. Herein, catalytic solutions are meant to play a key role. Among the different catalysts for CO<sub>2</sub> conversion, Cu supported molybdenum carbide is receiving increasing attention. Hence, in the present communication, we show the activity, selectivity and stability of fresh-prepared β-Mo<sub>2</sub>C catalysts and compare the results with those of Cu/Mo<sub>2</sub>C, Cs/Mo<sub>2</sub>C and Cu/Cs/Mo<sub>2</sub>C in CO<sub>2</sub> hydrogenation reactions. The results show that all the catalysts were active, and the main reaction product was methanol. Copper, cesium and molybdenum interaction is observed, and cesium promoted the formation of metallic Mo on the fresh catalyst. The incorporation of copper is positive and improves the activity and selectivity to methanol. Additionally, the addition of cesium favored the formation of Mo<sup>0</sup> phase, which for the catalysts Cs/Mo<sub>2</sub>C seemed to be detrimental for the conversion and selectivity. Moreover, the catalysts promoted by copper and/or cesium underwent redox surface transformations during the reaction, these were more obvious for cesium doped catalysts, which diminished their catalytic performance.https://www.mdpi.com/2073-4344/10/10/1213carbon dioxidemolybdenum carbidemethanolcopperalkalidopant |
| spellingShingle | Ana Belén Dongil Qi Zhang Laura Pastor-Pérez Tomás Ramírez-Reina Antonio Guerrero-Ruiz Inmaculada Rodríguez-Ramos Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol Catalysts carbon dioxide molybdenum carbide methanol copper alkali dopant |
| title | Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol |
| title_full | Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol |
| title_fullStr | Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol |
| title_full_unstemmed | Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol |
| title_short | Effect of Cu and Cs in the β-Mo<sub>2</sub>C System for CO<sub>2</sub> Hydrogenation to Methanol |
| title_sort | effect of cu and cs in the β mo sub 2 sub c system for co sub 2 sub hydrogenation to methanol |
| topic | carbon dioxide molybdenum carbide methanol copper alkali dopant |
| url | https://www.mdpi.com/2073-4344/10/10/1213 |
| work_keys_str_mv | AT anabelendongil effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol AT qizhang effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol AT laurapastorperez effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol AT tomasramirezreina effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol AT antonioguerreroruiz effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol AT inmaculadarodriguezramos effectofcuandcsinthebmosub2subcsystemforcosub2subhydrogenationtomethanol |