Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts
This study focuses on evaluating the volumetric hydrogen content in the gaseous mixture released from the steam catalytic gasification of <i>n</i>-C<sub>7</sub> asphaltenes and resins II at low temperatures (<230 °C). For this purpose, four nanocatalysts were selected: CeO...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/11/5/1301 |
| _version_ | 1797534049139425280 |
|---|---|
| author | Oscar E. Medina Jaime Gallego Sócrates Acevedo Masoud Riazi Raúl Ocampo-Pérez Farid B. Cortés Camilo A. Franco |
| author_facet | Oscar E. Medina Jaime Gallego Sócrates Acevedo Masoud Riazi Raúl Ocampo-Pérez Farid B. Cortés Camilo A. Franco |
| author_sort | Oscar E. Medina |
| collection | DOAJ |
| description | This study focuses on evaluating the volumetric hydrogen content in the gaseous mixture released from the steam catalytic gasification of <i>n</i>-C<sub>7</sub> asphaltenes and resins II at low temperatures (<230 °C). For this purpose, four nanocatalysts were selected: CeO<sub>2</sub>, CeO<sub>2</sub> functionalized with Ni-Pd, Fe-Pd, and Co-Pd. The catalytic capacity was measured by non-isothermal (from 100 to 600 °C) and isothermal (220 °C) thermogravimetric analyses. The samples show the main decomposition peak between 200 and 230 °C for bi-elemental nanocatalysts and 300 °C for the CeO<sub>2</sub> support, leading to reductions up to 50% in comparison with the samples in the absence of nanoparticles. At 220 °C, the conversion of both fractions increases in the order CeO<sub>2</sub> < Fe-Pd < Co-Pd < Ni-Pd. Hydrogen release was quantified for the isothermal tests. The hydrogen production agrees with each material’s catalytic activity for decomposing both fractions at the evaluated conditions. CeNi1Pd1 showed the highest performance among the other three samples and led to the highest hydrogen production in the effluent gas with values of ~44 vol%. When the samples were heated at higher temperatures (i.e., 230 °C), H<sub>2</sub> production increased up to 55 vol% during catalyzed <i>n</i>-C<sub>7</sub> asphaltene and resin conversion, indicating an increase of up to 70% in comparison with the non-catalyzed systems at the same temperature conditions. |
| first_indexed | 2024-03-10T11:24:07Z |
| format | Article |
| id | doaj.art-9bedd14dd1654be2ac527e4ee9f71c68 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:24:07Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-9bedd14dd1654be2ac527e4ee9f71c682023-11-21T19:48:15ZengMDPI AGNanomaterials2079-49912021-05-01115130110.3390/nano11051301Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based NanocatalystsOscar E. Medina0Jaime Gallego1Sócrates Acevedo2Masoud Riazi3Raúl Ocampo-Pérez4Farid B. Cortés5Camilo A. Franco6Grupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, ColombiaQuímica de Recursos Energéticos y Medio Ambiente, Instituto de Química, Universidad de Antioquia UdeA, Medellín 050010, ColombiaFacultad de Ciencias, Escuela de Química, Universidad Central de Venezuela, Caracas 1040, VenezuelaEnhanced Oil Recovery Research Center, IOR-EOR Research Institute, Shiraz University, Shiraz 7193616511, IranCentro de Investigación y Estudios de Posgrado, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, MexicoGrupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, ColombiaGrupo de Investigación en Fenómenos de Superficie—Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, ColombiaThis study focuses on evaluating the volumetric hydrogen content in the gaseous mixture released from the steam catalytic gasification of <i>n</i>-C<sub>7</sub> asphaltenes and resins II at low temperatures (<230 °C). For this purpose, four nanocatalysts were selected: CeO<sub>2</sub>, CeO<sub>2</sub> functionalized with Ni-Pd, Fe-Pd, and Co-Pd. The catalytic capacity was measured by non-isothermal (from 100 to 600 °C) and isothermal (220 °C) thermogravimetric analyses. The samples show the main decomposition peak between 200 and 230 °C for bi-elemental nanocatalysts and 300 °C for the CeO<sub>2</sub> support, leading to reductions up to 50% in comparison with the samples in the absence of nanoparticles. At 220 °C, the conversion of both fractions increases in the order CeO<sub>2</sub> < Fe-Pd < Co-Pd < Ni-Pd. Hydrogen release was quantified for the isothermal tests. The hydrogen production agrees with each material’s catalytic activity for decomposing both fractions at the evaluated conditions. CeNi1Pd1 showed the highest performance among the other three samples and led to the highest hydrogen production in the effluent gas with values of ~44 vol%. When the samples were heated at higher temperatures (i.e., 230 °C), H<sub>2</sub> production increased up to 55 vol% during catalyzed <i>n</i>-C<sub>7</sub> asphaltene and resin conversion, indicating an increase of up to 70% in comparison with the non-catalyzed systems at the same temperature conditions.https://www.mdpi.com/2079-4991/11/5/1301adsorptionasphaltene-resins mixtureshydrogen productionnanocatalystssteam catalytic gasification |
| spellingShingle | Oscar E. Medina Jaime Gallego Sócrates Acevedo Masoud Riazi Raúl Ocampo-Pérez Farid B. Cortés Camilo A. Franco Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts Nanomaterials adsorption asphaltene-resins mixtures hydrogen production nanocatalysts steam catalytic gasification |
| title | Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts |
| title_full | Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts |
| title_fullStr | Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts |
| title_full_unstemmed | Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts |
| title_short | Catalytic Conversion of <i>n</i>-C<sub>7</sub> Asphaltenes and Resins II into Hydrogen Using CeO<sub>2</sub>-Based Nanocatalysts |
| title_sort | catalytic conversion of i n i c sub 7 sub asphaltenes and resins ii into hydrogen using ceo sub 2 sub based nanocatalysts |
| topic | adsorption asphaltene-resins mixtures hydrogen production nanocatalysts steam catalytic gasification |
| url | https://www.mdpi.com/2079-4991/11/5/1301 |
| work_keys_str_mv | AT oscaremedina catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT jaimegallego catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT socratesacevedo catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT masoudriazi catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT raulocampoperez catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT faridbcortes catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts AT camiloafranco catalyticconversionofinicsub7subasphaltenesandresinsiiintohydrogenusingceosub2subbasednanocatalysts |