Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C
Operating chemical looping process at mid-temperatures (550–750 °C) presents exciting potential for the stable production of hydrogen. However, the reactivity of oxygen carriers is compromised by the detrimental effect of the relatively low temperatures on the redox kinetics. Although the reactivity...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-10-01
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| Series: | Green Energy & Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468025720300844 |
| _version_ | 1818439950915338240 |
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| author | Yu Qiu Li Ma Qingfeng Kong Min Li Dongxu Cui Shuai Zhang Dewang Zeng Rui Xiao |
| author_facet | Yu Qiu Li Ma Qingfeng Kong Min Li Dongxu Cui Shuai Zhang Dewang Zeng Rui Xiao |
| author_sort | Yu Qiu |
| collection | DOAJ |
| description | Operating chemical looping process at mid-temperatures (550–750 °C) presents exciting potential for the stable production of hydrogen. However, the reactivity of oxygen carriers is compromised by the detrimental effect of the relatively low temperatures on the redox kinetics. Although the reactivity at mid-temperature can be improved by the addition of noble metals, the high cost of these noble metal containing materials significantly hindered their scalable applications. In the current work, we propose to incorporate earth-abundant metals into the iron-based spinel for hydrogen production in a chemical looping scheme at mid-temperatures. Mn0.2Co0.4Fe2.4O4 shows a high hydrogen production performance at the average rate of ∼0.62 mmol g−1 min−1 and a hydrogen yield of ∼9.29 mmol g−1 with satisfactory stability over 20 cycles at 550 °C. The mechanism studies manifest that the enhanced hydrogen production performance is a result of the improved oxygen-ion conductivity to enhance reduction reaction and high reactivity of reduced samples with steam. The performance of the oxygen carriers in this work is comparable to those noble-metal containing materials, enabling their potential for industrial applications. |
| first_indexed | 2024-12-14T18:04:37Z |
| format | Article |
| id | doaj.art-17786a3e1fd740c2868fbd5972acee85 |
| institution | Directory Open Access Journal |
| issn | 2468-0257 |
| language | English |
| last_indexed | 2024-12-14T18:04:37Z |
| publishDate | 2021-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Green Energy & Environment |
| spelling | doaj.art-17786a3e1fd740c2868fbd5972acee852022-12-21T22:52:23ZengKeAi Communications Co., Ltd.Green Energy & Environment2468-02572021-10-0165780789Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °CYu Qiu0Li Ma1Qingfeng Kong2Min Li3Dongxu Cui4Shuai Zhang5Dewang Zeng6Rui Xiao7Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaKey Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaCorresponding authors.; Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaCorresponding authors.; Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, 210096, ChinaOperating chemical looping process at mid-temperatures (550–750 °C) presents exciting potential for the stable production of hydrogen. However, the reactivity of oxygen carriers is compromised by the detrimental effect of the relatively low temperatures on the redox kinetics. Although the reactivity at mid-temperature can be improved by the addition of noble metals, the high cost of these noble metal containing materials significantly hindered their scalable applications. In the current work, we propose to incorporate earth-abundant metals into the iron-based spinel for hydrogen production in a chemical looping scheme at mid-temperatures. Mn0.2Co0.4Fe2.4O4 shows a high hydrogen production performance at the average rate of ∼0.62 mmol g−1 min−1 and a hydrogen yield of ∼9.29 mmol g−1 with satisfactory stability over 20 cycles at 550 °C. The mechanism studies manifest that the enhanced hydrogen production performance is a result of the improved oxygen-ion conductivity to enhance reduction reaction and high reactivity of reduced samples with steam. The performance of the oxygen carriers in this work is comparable to those noble-metal containing materials, enabling their potential for industrial applications.http://www.sciencedirect.com/science/article/pii/S2468025720300844Chemical loopingMid-temperatureEarth-abundant metalsSpinelHydrogen production |
| spellingShingle | Yu Qiu Li Ma Qingfeng Kong Min Li Dongxu Cui Shuai Zhang Dewang Zeng Rui Xiao Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C Green Energy & Environment Chemical looping Mid-temperature Earth-abundant metals Spinel Hydrogen production |
| title | Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C |
| title_full | Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C |
| title_fullStr | Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C |
| title_full_unstemmed | Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C |
| title_short | Earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °C |
| title_sort | earth abundant spinel for hydrogen production in a chemical looping scheme at 550 °c |
| topic | Chemical looping Mid-temperature Earth-abundant metals Spinel Hydrogen production |
| url | http://www.sciencedirect.com/science/article/pii/S2468025720300844 |
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