MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization
The most important factors in improving the stability of nickel-based catalysts for methane reforming with carbon dioxide (so-called methane dry reforming, MDR) lie both in suppressing carbon formation and in inhibiting metal sintering at the high operating temperatures of this process (typically ab...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
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American Chemical Society
2020
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| Subjects: |
| _version_ | 1826261097352527872 |
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| author | Li, W Jie, X Wang, C Dilworth, JR Xu, C Xiao, T Edwards, PP |
| author_facet | Li, W Jie, X Wang, C Dilworth, JR Xu, C Xiao, T Edwards, PP |
| author_sort | Li, W |
| collection | OXFORD |
| description | The most important factors in improving the stability of nickel-based catalysts for methane reforming with carbon dioxide (so-called methane dry reforming, MDR) lie both in suppressing carbon formation and in inhibiting metal sintering at the high operating temperatures of this process (typically above 700 °C). Many efforts have been made to overcome these challenges, for example, by enhancing metal catalyst–support interactions. In this work, we used microwaves as an energy source to drive the MDR reactions under mild conditions with an overall measured catalyst bed temperature of below 220 °C. A high CH4 conversion of ca. 94% and a 97% conversion of CO2 were achieved over manganese-oxide modified ZrO2-supported nickel catalysts, exhibiting excellent anticoking properties. Compared with Ni/ZrO2 and Mn/ZrO2 catalysts, the Ni–Mn bimetal catalytic system stabilizes the catalytic activity of MDR by suppressing carbon deposition with the mixed-valent Mn3+/Mn2+ chemical states enhancing the absorption and conversion of CO2 during the reactions. |
| first_indexed | 2024-03-06T19:16:13Z |
| format | Journal article |
| id | oxford-uuid:18778b38-a059-4b26-b9c0-3a0df2428346 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:16:13Z |
| publishDate | 2020 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:18778b38-a059-4b26-b9c0-3a0df24283462022-03-26T10:43:27ZMnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilizationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:18778b38-a059-4b26-b9c0-3a0df2428346Electromagnetic radiationTransition metalsOxidesHydrocarbonsCatalystsEnglishSymplectic ElementsAmerican Chemical Society2020Li, WJie, XWang, CDilworth, JRXu, CXiao, TEdwards, PPThe most important factors in improving the stability of nickel-based catalysts for methane reforming with carbon dioxide (so-called methane dry reforming, MDR) lie both in suppressing carbon formation and in inhibiting metal sintering at the high operating temperatures of this process (typically above 700 °C). Many efforts have been made to overcome these challenges, for example, by enhancing metal catalyst–support interactions. In this work, we used microwaves as an energy source to drive the MDR reactions under mild conditions with an overall measured catalyst bed temperature of below 220 °C. A high CH4 conversion of ca. 94% and a 97% conversion of CO2 were achieved over manganese-oxide modified ZrO2-supported nickel catalysts, exhibiting excellent anticoking properties. Compared with Ni/ZrO2 and Mn/ZrO2 catalysts, the Ni–Mn bimetal catalytic system stabilizes the catalytic activity of MDR by suppressing carbon deposition with the mixed-valent Mn3+/Mn2+ chemical states enhancing the absorption and conversion of CO2 during the reactions. |
| spellingShingle | Electromagnetic radiation Transition metals Oxides Hydrocarbons Catalysts Li, W Jie, X Wang, C Dilworth, JR Xu, C Xiao, T Edwards, PP MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title | MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title_full | MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title_fullStr | MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title_full_unstemmed | MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title_short | MnOx-promoted, coking-resistant nickel-based catalysts for microwave-initiated CO2 utilization |
| title_sort | mnox promoted coking resistant nickel based catalysts for microwave initiated co2 utilization |
| topic | Electromagnetic radiation Transition metals Oxides Hydrocarbons Catalysts |
| work_keys_str_mv | AT liw mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT jiex mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT wangc mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT dilworthjr mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT xuc mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT xiaot mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization AT edwardspp mnoxpromotedcokingresistantnickelbasedcatalystsformicrowaveinitiatedco2utilization |