Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming
<p dir="ltr">Mg-doped LaNiO<sub>3</sub> perovskite nanoparticles, denoted as LaNi<sub>x</sub>Mg<sub>1-x</sub>O<sub>3</sub> (0 ≤x ≤ 1), were prepared via the solution combustion technique and evaluated for dry reforming of methane. The r...
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| المؤلف الرئيسي: | |
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| منشور في: |
2024
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| _version_ | 1864513552631463936 |
|---|---|
| author | Parisa Ebrahimi (14152392) |
| author2 | Anand Kumar (24122) Mohammed J. Al-Marri (1400581) |
| author2_role | author author |
| author_facet | Parisa Ebrahimi (14152392) Anand Kumar (24122) Mohammed J. Al-Marri (1400581) |
| author_role | author |
| dc.creator.none.fl_str_mv | Parisa Ebrahimi (14152392) Anand Kumar (24122) Mohammed J. Al-Marri (1400581) |
| dc.date.none.fl_str_mv | 2024-12-27T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.jgsce.2024.205530 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Impact_of_magnesium_substitution_on_the_structural_stability_and_catalytic_performance_of_LaNiO_sub_sub_perovskites_for_methane_dry_reforming/28112999 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Nanotechnology Dry-reforming of methane Carbon deposition Perovskites Cation substitution |
| dc.title.none.fl_str_mv | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Mg-doped LaNiO<sub>3</sub> perovskite nanoparticles, denoted as LaNi<sub>x</sub>Mg<sub>1-x</sub>O<sub>3</sub> (0 ≤x ≤ 1), were prepared via the solution combustion technique and evaluated for dry reforming of methane. The results suggest that at 750 °C, a nickel content 0.57 achieved optimal conversion rates of 86% for CO<sub>2</sub> and 77% for CH<sub>4</sub>, as determined by the Design of Experiment (DOE) analysis. These findings were subsequently experimentally confirmed through the synthesis of LaNi<sub>0.5</sub>Mg<sub>0.5</sub>O<sub>3</sub>. The TPR analysis revealed that partially substituting Ni with Mg raised the reduction peak temperatures, indicating a more stable perovskite structure that is harder to reduce compared to LaNiO<sub>3</sub>. Notably, all catalysts, except LaMgO<sub>3</sub>, demonstrated high activity for generating syngas in the DRM reaction, the replacement of Ni with Mg did not significantly enhance the catalytic efficiency of LaNi<sub>0.5</sub>Mg<sub>0.5</sub>O<sub>3</sub>; however, the samples showed enhanced stability with the inclusion of Mg. The XRD patterns of the synthesized LaNi<sub>x</sub>Mg<sub>1-x</sub>O<sub>3</sub> solids indicated that with higher concentrations of Mg, the development of the perovskite phase was hindered; instead, spinel (La<sub>2</sub>NiO<sub>4</sub>) and oxide phases (MgO and NiO) appeared on the surface of the sample.</p><h2>Other Information</h2><p dir="ltr">Published in: Gas Science and Engineering<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.jgsce.2024.205530" target="_blank">https://dx.doi.org/10.1016/j.jgsce.2024.205530</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_16d320ce93ea87de767813764851a5c8 |
| identifier_str_mv | 10.1016/j.jgsce.2024.205530 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/28112999 |
| publishDate | 2024 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reformingParisa Ebrahimi (14152392)Anand Kumar (24122)Mohammed J. Al-Marri (1400581)EngineeringChemical engineeringNanotechnologyDry-reforming of methaneCarbon depositionPerovskitesCation substitution<p dir="ltr">Mg-doped LaNiO<sub>3</sub> perovskite nanoparticles, denoted as LaNi<sub>x</sub>Mg<sub>1-x</sub>O<sub>3</sub> (0 ≤x ≤ 1), were prepared via the solution combustion technique and evaluated for dry reforming of methane. The results suggest that at 750 °C, a nickel content 0.57 achieved optimal conversion rates of 86% for CO<sub>2</sub> and 77% for CH<sub>4</sub>, as determined by the Design of Experiment (DOE) analysis. These findings were subsequently experimentally confirmed through the synthesis of LaNi<sub>0.5</sub>Mg<sub>0.5</sub>O<sub>3</sub>. The TPR analysis revealed that partially substituting Ni with Mg raised the reduction peak temperatures, indicating a more stable perovskite structure that is harder to reduce compared to LaNiO<sub>3</sub>. Notably, all catalysts, except LaMgO<sub>3</sub>, demonstrated high activity for generating syngas in the DRM reaction, the replacement of Ni with Mg did not significantly enhance the catalytic efficiency of LaNi<sub>0.5</sub>Mg<sub>0.5</sub>O<sub>3</sub>; however, the samples showed enhanced stability with the inclusion of Mg. The XRD patterns of the synthesized LaNi<sub>x</sub>Mg<sub>1-x</sub>O<sub>3</sub> solids indicated that with higher concentrations of Mg, the development of the perovskite phase was hindered; instead, spinel (La<sub>2</sub>NiO<sub>4</sub>) and oxide phases (MgO and NiO) appeared on the surface of the sample.</p><h2>Other Information</h2><p dir="ltr">Published in: Gas Science and Engineering<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.jgsce.2024.205530" target="_blank">https://dx.doi.org/10.1016/j.jgsce.2024.205530</a></p>2024-12-27T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.jgsce.2024.205530https://figshare.com/articles/journal_contribution/Impact_of_magnesium_substitution_on_the_structural_stability_and_catalytic_performance_of_LaNiO_sub_sub_perovskites_for_methane_dry_reforming/28112999CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/281129992024-12-27T03:00:00Z |
| spellingShingle | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming Parisa Ebrahimi (14152392) Engineering Chemical engineering Nanotechnology Dry-reforming of methane Carbon deposition Perovskites Cation substitution |
| status_str | publishedVersion |
| title | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| title_full | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| title_fullStr | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| title_full_unstemmed | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| title_short | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| title_sort | Impact of magnesium substitution on the structural stability and catalytic performance of LaNiO<sub>₃</sub> perovskites for methane dry reforming |
| topic | Engineering Chemical engineering Nanotechnology Dry-reforming of methane Carbon deposition Perovskites Cation substitution |