On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane
Six ceria supports synthesized by various synthesis methodologies were used to deposit cobalt oxide. The catalysts were thoroughly characterized, and their catalytic activity for complete methane oxidation was studied. The supports synthesized by direct calcination and precipitation with ammonia exh...
| Authors: | ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2022 |
| Country: | España |
| Institution: | Universidad del País Vasco |
| Repository: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/63971 |
| Online Access: | http://hdl.handle.net/10810/63971 |
| Access Level: | Open access |
| Keyword: | catalysts cobalt oxide ceria redox reactions |
| _version_ | 1878741205767946240 |
|---|---|
| author | Choya Atencia, Andoni |
| author2 | De Rivas Martín, Beatriz Gutiérrez Ortiz, José Ignacio López Fonseca, Rubén |
| author2_role | author author author |
| author_browse | Choya Atencia, Andoni De Rivas Martín, Beatriz Gutiérrez Ortiz, José Ignacio López Fonseca, Rubén |
| author_facet | Choya Atencia, Andoni De Rivas Martín, Beatriz Gutiérrez Ortiz, José Ignacio López Fonseca, Rubén |
| author_role | author |
| collection | Addi. Archivo Digital para la Docencia y la Investigación |
| description | Six ceria supports synthesized by various synthesis methodologies were used to deposit cobalt oxide. The catalysts were thoroughly characterized, and their catalytic activity for complete methane oxidation was studied. The supports synthesized by direct calcination and precipitation with ammonia exhibited the best textural and structural properties as well as the highest degree of oxidation. The remaining supports presented poorer textural properties to be employed as catalytic supports. The cobalt deposited over the first two supports presented a good dispersion at the external surface, which induced a significant redox effect that increased the number of Co3+ ions on their surface. Consequently, the presence of highly active lattice oxygen species on the surface of these catalysts was favored. Additionally, the optimal active catalyst (Co-DC) revealed a significant resistance to water vapor inhibition, owing to the high hydrophobicity of the ceria support. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_e109b506027074e79e5a2d9cccc10f8e |
| institution | Universidad del País Vasco |
| instname_str | Universidad del País Vasco |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:addi.ehu.eus:10810/63971 |
| publishDate | 2022 |
| publishDateSort | 2022 |
| publisher | ACS |
| publisherStr | ACS |
| reponame_str | Addi. Archivo Digital para la Docencia y la Investigación |
| spelling | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane Choya Atencia, Andoni De Rivas Martín, Beatriz Gutiérrez Ortiz, José Ignacio López Fonseca, Rubén catalysts cobalt oxide ceria redox reactions Six ceria supports synthesized by various synthesis methodologies were used to deposit cobalt oxide. The catalysts were thoroughly characterized, and their catalytic activity for complete methane oxidation was studied. The supports synthesized by direct calcination and precipitation with ammonia exhibited the best textural and structural properties as well as the highest degree of oxidation. The remaining supports presented poorer textural properties to be employed as catalytic supports. The cobalt deposited over the first two supports presented a good dispersion at the external surface, which induced a significant redox effect that increased the number of Co3+ ions on their surface. Consequently, the presence of highly active lattice oxygen species on the surface of these catalysts was favored. Additionally, the optimal active catalyst (Co-DC) revealed a significant resistance to water vapor inhibition, owing to the high hydrophobicity of the ceria support. Spanish Ministry of Science and Innovation (PID2019-107105RB-I00 AEI/FEDER, UE and PDC2022-133897-I00), Basque Government (IT1509-22), University of the Basque Country UPV/EHU (DOCREC21/23) ACS http://hdl.handle.net/10810/63971 |
| spellingShingle | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane Choya Atencia, Andoni catalysts cobalt oxide ceria redox reactions |
| title | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| title_full | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| title_fullStr | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| title_full_unstemmed | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| title_short | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| title_sort | On the Effect of the Synthesis Route of the Support in Co3O4/CeO2 Catalysts for the Complete Oxidation of Methane |
| topic | catalysts cobalt oxide ceria redox reactions |
| topic_facet | catalysts cobalt oxide ceria redox reactions |
| url | http://hdl.handle.net/10810/63971 |