N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3
Abstract A series of N-doped graphene (NG) and TiO2 supported MnOx–CeO2 catalysts were prepared by a hydrothermal method. The catalysts with different molar ratios of Mn/Ce (6: 1, 10: 1, 15: 1) were investigated for the low-temperature selective catalytic reduction (SCR) of NO x with NH3. The synthe...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2018-10-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | http://link.springer.com/article/10.1007/s40145-018-0271-7 |
| _version_ | 1797720351285706752 |
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| author | Chunlin Zhao Yanxia Wu Hailong Liang Xi Chen Jie Tang Xianzhong Wang |
| author_facet | Chunlin Zhao Yanxia Wu Hailong Liang Xi Chen Jie Tang Xianzhong Wang |
| author_sort | Chunlin Zhao |
| collection | DOAJ |
| description | Abstract A series of N-doped graphene (NG) and TiO2 supported MnOx–CeO2 catalysts were prepared by a hydrothermal method. The catalysts with different molar ratios of Mn/Ce (6: 1, 10: 1, 15: 1) were investigated for the low-temperature selective catalytic reduction (SCR) of NO x with NH3. The synthesized catalysts were characterized by HRTEM, SEM, XRD, BET, XPS, and NH3-TPD technologies. The characterization results indicated that manganese and cerium oxide particles dispersed on the surface of the TiO2–NG support uniformly, and that manganese and cerium oxides existed in different valences on the surface of the TiO2–NG support. At Mn element loading of 8 wt%, MnO x –CeO2(10: 1)/TiO2–1%NG displayed superior activity and improved SO2 resistance. On the basis of the catalyst characterization, excellent catalytic performance and SO2 tolerance at low temperature were attributed to the high content of manganese with high oxidation valence, extensive oxidation of NO into NO2 by CeO2 and strong NO adsorption capacity, and electron transfer of N-doped graphene. |
| first_indexed | 2024-03-12T09:18:07Z |
| format | Article |
| id | doaj.art-860fe879043a4ee7b461b8161cd40053 |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T09:18:07Z |
| publishDate | 2018-10-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-860fe879043a4ee7b461b8161cd400532023-09-02T14:40:45ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082018-10-017319720610.1007/s40145-018-0271-7N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3Chunlin Zhao0Yanxia Wu1Hailong Liang2Xi Chen3Jie Tang4Xianzhong Wang5Institute of Ceramic Science, China Building Material AcademyInstitute of Ceramic Science, China Building Material AcademyInstitute of Ceramic Science, China Building Material AcademyInstitute of Ceramic Science, China Building Material AcademyInstitute of Ceramic Science, China Building Material AcademyDepartment of Materials Science and Engineering, Pingxiang CollegeAbstract A series of N-doped graphene (NG) and TiO2 supported MnOx–CeO2 catalysts were prepared by a hydrothermal method. The catalysts with different molar ratios of Mn/Ce (6: 1, 10: 1, 15: 1) were investigated for the low-temperature selective catalytic reduction (SCR) of NO x with NH3. The synthesized catalysts were characterized by HRTEM, SEM, XRD, BET, XPS, and NH3-TPD technologies. The characterization results indicated that manganese and cerium oxide particles dispersed on the surface of the TiO2–NG support uniformly, and that manganese and cerium oxides existed in different valences on the surface of the TiO2–NG support. At Mn element loading of 8 wt%, MnO x –CeO2(10: 1)/TiO2–1%NG displayed superior activity and improved SO2 resistance. On the basis of the catalyst characterization, excellent catalytic performance and SO2 tolerance at low temperature were attributed to the high content of manganese with high oxidation valence, extensive oxidation of NO into NO2 by CeO2 and strong NO adsorption capacity, and electron transfer of N-doped graphene.http://link.springer.com/article/10.1007/s40145-018-0271-7low-temperatureselective catalytic reduction (SCR)N-doped grapheme (NG)manganese and cerium oxides |
| spellingShingle | Chunlin Zhao Yanxia Wu Hailong Liang Xi Chen Jie Tang Xianzhong Wang N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 Journal of Advanced Ceramics low-temperature selective catalytic reduction (SCR) N-doped grapheme (NG) manganese and cerium oxides |
| title | N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 |
| title_full | N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 |
| title_fullStr | N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 |
| title_full_unstemmed | N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 |
| title_short | N-doped graphene and TiO2 supported manganese and cerium oxides on low-temperature selective catalytic reduction of NO x with NH3 |
| title_sort | n doped graphene and tio2 supported manganese and cerium oxides on low temperature selective catalytic reduction of no x with nh3 |
| topic | low-temperature selective catalytic reduction (SCR) N-doped grapheme (NG) manganese and cerium oxides |
| url | http://link.springer.com/article/10.1007/s40145-018-0271-7 |
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