Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion
The unique structure and physical properties of perovskite-type catalysts make them highly promising for catalyzing efficient coal combustion. Mesoporous perovskite LaNi<sub>x</sub>Fe<sub>1−x</sub>O<sub>3</sub> (x = 0.2, 0.4, 0.6, 0.8) coal combustion catalysts we...
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MDPI AG
2023-07-01
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| Online Access: | https://www.mdpi.com/1996-1073/16/14/5432 |
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| author | Guohong Wang Shunli Zhang Zhuo Huang Xin Cui Zhengchang Song |
| author_facet | Guohong Wang Shunli Zhang Zhuo Huang Xin Cui Zhengchang Song |
| author_sort | Guohong Wang |
| collection | DOAJ |
| description | The unique structure and physical properties of perovskite-type catalysts make them highly promising for catalyzing efficient coal combustion. Mesoporous perovskite LaNi<sub>x</sub>Fe<sub>1−x</sub>O<sub>3</sub> (x = 0.2, 0.4, 0.6, 0.8) coal combustion catalysts were synthesized using the sol–gel method. The effects of the doping amount of B-site doped nickel on both the crystal structure and catalytic performance were investigated. X-ray diffraction, scanning electron microscopy, and nitrogen adsorption–desorption tests were used to characterize the catalyst samples. Thermogravimetric analysis (TG) and activation energy (E<sub>a</sub>) calculations were used to assess the catalyst’s activity for the catalytic combustion of anthracite coal (JF coal, originating from Shanxi, China). Results revealed that nickel doping created lattice distortion and Ni-Fe alloy interactions. The difference in nickel doping significantly affects the morphology and catalytic activity of perovskite. The addition of LaNi<sub>0.6</sub>Fe<sub>0.4</sub>O<sub>3</sub> (NI6) with a mass fraction of 5% resulted in the highest average burning rate value (v<sub>a</sub> = 4.52%/min) of JF coal among all synthesized catalysts. The E<sub>a</sub> of JF coal catalytic combustion, calculated using the Coats–Redfern method and the Doyle method, showed a good agreement with the TG curves. The LaNi<sub>x</sub>Fe<sub>1-x</sub>O<sub>3</sub> series catalysts were found to significantly decrease the E<sub>a</sub> of JF coal combustion, with a maximum reduction of 42% compared to the case without any catalyst added. Among the synthesized catalysts, NI6 exhibited a favorable catalytic combustion performance and is thus a promising candidate for the clean and efficient utilization of coal resources. |
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| language | English |
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| series | Energies |
| spelling | doaj.art-0a0e8d9cddad404db28710d462a51d102023-11-18T19:10:14ZengMDPI AGEnergies1996-10732023-07-011614543210.3390/en16145432Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal CombustionGuohong Wang0Shunli Zhang1Zhuo Huang2Xin Cui3Zhengchang Song4School of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Low-Carbon Energy and Power Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaThe unique structure and physical properties of perovskite-type catalysts make them highly promising for catalyzing efficient coal combustion. Mesoporous perovskite LaNi<sub>x</sub>Fe<sub>1−x</sub>O<sub>3</sub> (x = 0.2, 0.4, 0.6, 0.8) coal combustion catalysts were synthesized using the sol–gel method. The effects of the doping amount of B-site doped nickel on both the crystal structure and catalytic performance were investigated. X-ray diffraction, scanning electron microscopy, and nitrogen adsorption–desorption tests were used to characterize the catalyst samples. Thermogravimetric analysis (TG) and activation energy (E<sub>a</sub>) calculations were used to assess the catalyst’s activity for the catalytic combustion of anthracite coal (JF coal, originating from Shanxi, China). Results revealed that nickel doping created lattice distortion and Ni-Fe alloy interactions. The difference in nickel doping significantly affects the morphology and catalytic activity of perovskite. The addition of LaNi<sub>0.6</sub>Fe<sub>0.4</sub>O<sub>3</sub> (NI6) with a mass fraction of 5% resulted in the highest average burning rate value (v<sub>a</sub> = 4.52%/min) of JF coal among all synthesized catalysts. The E<sub>a</sub> of JF coal catalytic combustion, calculated using the Coats–Redfern method and the Doyle method, showed a good agreement with the TG curves. The LaNi<sub>x</sub>Fe<sub>1-x</sub>O<sub>3</sub> series catalysts were found to significantly decrease the E<sub>a</sub> of JF coal combustion, with a maximum reduction of 42% compared to the case without any catalyst added. Among the synthesized catalysts, NI6 exhibited a favorable catalytic combustion performance and is thus a promising candidate for the clean and efficient utilization of coal resources.https://www.mdpi.com/1996-1073/16/14/5432B-site doping perovskitecompositessol–gel chemistrycatalytic combustion |
| spellingShingle | Guohong Wang Shunli Zhang Zhuo Huang Xin Cui Zhengchang Song Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion Energies B-site doping perovskite composites sol–gel chemistry catalytic combustion |
| title | Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion |
| title_full | Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion |
| title_fullStr | Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion |
| title_full_unstemmed | Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion |
| title_short | Study of the Structure and Catalytic Activity of B-Site Doping Perovskite for an Inferior Anthracite Coal Combustion |
| title_sort | study of the structure and catalytic activity of b site doping perovskite for an inferior anthracite coal combustion |
| topic | B-site doping perovskite composites sol–gel chemistry catalytic combustion |
| url | https://www.mdpi.com/1996-1073/16/14/5432 |
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