Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes
In the present work, a simple soft chemistry method was employed to prepare cobalt mixed oxide (Co<sub>3</sub>O<sub>4</sub>) materials, which have shown remarkably high activity in the heterogeneously catalyzed total oxidation of low reactive VOCs such as the light alkanes pr...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-11-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/23/7120 |
| _version_ | 1797507589932580864 |
|---|---|
| author | Rut Sanchis Adrián García Francisco Ivars-Barceló Stuart H. Taylor Tomás García Ana Dejoz María Isabel Vázquez Benjamín Solsona |
| author_facet | Rut Sanchis Adrián García Francisco Ivars-Barceló Stuart H. Taylor Tomás García Ana Dejoz María Isabel Vázquez Benjamín Solsona |
| author_sort | Rut Sanchis |
| collection | DOAJ |
| description | In the present work, a simple soft chemistry method was employed to prepare cobalt mixed oxide (Co<sub>3</sub>O<sub>4</sub>) materials, which have shown remarkably high activity in the heterogeneously catalyzed total oxidation of low reactive VOCs such as the light alkanes propane, ethane, and methane. The optimal heat-treatment temperature of the catalysts was shown to depend on the reactivity of the alkane studied. The catalytic activity of the Co<sub>3</sub>O<sub>4</sub> catalysts was found to be as high as that of the most effective catalysts based on noble metals. The physicochemical properties, from either the bulk (using XRD, TPR, TPD-O<sub>2</sub>, and TEM) or the surface (using XPS), of the catalysts were investigated to correlate the properties with the catalytic performance in the total oxidation of VOCs. The presence of S1 low-coordinated oxygen species at the near surface of the Co<sub>3</sub>O<sub>4</sub>-based catalysts appeared to be linked with the higher reducibility of the catalysts and, consequently, with the higher catalytic activity, not only per mass of catalyst but also per surface area (enhanced areal rate). The co-presence of propane and methane in the feed at low reaction temperatures did not negatively affect the propane reactivity. However, the co-presence of propane and methane in the feed at higher reaction temperatures negatively affected the methane reactivity. |
| first_indexed | 2024-03-10T04:50:34Z |
| format | Article |
| id | doaj.art-a42253a4d0be41b0aaab115d5acb732f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:50:34Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a42253a4d0be41b0aaab115d5acb732f2023-11-23T02:38:32ZengMDPI AGMaterials1996-19442021-11-011423712010.3390/ma14237120Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of AlkanesRut Sanchis0Adrián García1Francisco Ivars-Barceló2Stuart H. Taylor3Tomás García4Ana Dejoz5María Isabel Vázquez6Benjamín Solsona7Departamento de Ingeniería Química, Universitat de València, C/Dr. Moliner 50, Burjassot, 46100 Valencia, SpainDepartamento de Ingeniería Química, Universitat de València, C/Dr. Moliner 50, Burjassot, 46100 Valencia, SpainDepartamento Química Inorgánica y Química Técnica, Faculty of Sciences, UNED, Av. Esparta s/n, Las Rozas, 28232 Madrid, SpainCardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UKInstituto de Carboquímica (ICB-CSIC), C/Miguel Luesma 4, 50018 Zaragoza, SpainDepartamento de Ingeniería Química, Universitat de València, C/Dr. Moliner 50, Burjassot, 46100 Valencia, SpainDepartamento de Ingeniería Química, Universitat de València, C/Dr. Moliner 50, Burjassot, 46100 Valencia, SpainDepartamento de Ingeniería Química, Universitat de València, C/Dr. Moliner 50, Burjassot, 46100 Valencia, SpainIn the present work, a simple soft chemistry method was employed to prepare cobalt mixed oxide (Co<sub>3</sub>O<sub>4</sub>) materials, which have shown remarkably high activity in the heterogeneously catalyzed total oxidation of low reactive VOCs such as the light alkanes propane, ethane, and methane. The optimal heat-treatment temperature of the catalysts was shown to depend on the reactivity of the alkane studied. The catalytic activity of the Co<sub>3</sub>O<sub>4</sub> catalysts was found to be as high as that of the most effective catalysts based on noble metals. The physicochemical properties, from either the bulk (using XRD, TPR, TPD-O<sub>2</sub>, and TEM) or the surface (using XPS), of the catalysts were investigated to correlate the properties with the catalytic performance in the total oxidation of VOCs. The presence of S1 low-coordinated oxygen species at the near surface of the Co<sub>3</sub>O<sub>4</sub>-based catalysts appeared to be linked with the higher reducibility of the catalysts and, consequently, with the higher catalytic activity, not only per mass of catalyst but also per surface area (enhanced areal rate). The co-presence of propane and methane in the feed at low reaction temperatures did not negatively affect the propane reactivity. However, the co-presence of propane and methane in the feed at higher reaction temperatures negatively affected the methane reactivity.https://www.mdpi.com/1996-1944/14/23/7120cobalt oxidetotal oxidationalkane oxidationheterogeneous catalysisvolatile organic compoundspropane |
| spellingShingle | Rut Sanchis Adrián García Francisco Ivars-Barceló Stuart H. Taylor Tomás García Ana Dejoz María Isabel Vázquez Benjamín Solsona Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes Materials cobalt oxide total oxidation alkane oxidation heterogeneous catalysis volatile organic compounds propane |
| title | Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes |
| title_full | Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes |
| title_fullStr | Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes |
| title_full_unstemmed | Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes |
| title_short | Highly Active Co<sub>3</sub>O<sub>4</sub>-Based Catalysts for Total Oxidation of Light C1–C3 Alkanes Prepared by a Simple Soft Chemistry Method: Effect of the Heat-Treatment Temperature and Mixture of Alkanes |
| title_sort | highly active co sub 3 sub o sub 4 sub based catalysts for total oxidation of light c1 c3 alkanes prepared by a simple soft chemistry method effect of the heat treatment temperature and mixture of alkanes |
| topic | cobalt oxide total oxidation alkane oxidation heterogeneous catalysis volatile organic compounds propane |
| url | https://www.mdpi.com/1996-1944/14/23/7120 |
| work_keys_str_mv | AT rutsanchis highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT adriangarcia highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT franciscoivarsbarcelo highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT stuarthtaylor highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT tomasgarcia highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT anadejoz highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT mariaisabelvazquez highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes AT benjaminsolsona highlyactivecosub3subosub4subbasedcatalystsfortotaloxidationoflightc1c3alkanespreparedbyasimplesoftchemistrymethodeffectoftheheattreatmenttemperatureandmixtureofalkanes |