The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst
This work prepared an ISAPO-34/SAPO-18 intergrown zeolite using phosphate organoamine as the structure guiding agent. Physical-chemical characterizations by XRD, SEM, TG, and BET showed that the SAPO-34/SAPO-18 presents a cross-stacked cubic block-like microscopic morphology, with characteristic dif...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2022.1069824/full |
| _version_ | 1797986477827686400 |
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| author | Hongling Ye Kai Ren Pengfei Wang Lin Wang |
| author_facet | Hongling Ye Kai Ren Pengfei Wang Lin Wang |
| author_sort | Hongling Ye |
| collection | DOAJ |
| description | This work prepared an ISAPO-34/SAPO-18 intergrown zeolite using phosphate organoamine as the structure guiding agent. Physical-chemical characterizations by XRD, SEM, TG, and BET showed that the SAPO-34/SAPO-18 presents a cross-stacked cubic block-like microscopic morphology, with characteristic diffusive diffraction peaks at 2θ = 16–18° and 30–33° and a specific surface area of 557 m2 g−1. The series of copper-based catalysts prepared from SAPO-34/SAPO-18 showed a shift of the active temperature window to a lower temperature with increasing copper content. Moreover, the Brønsted acid site decreased significantly due to copper ion exchange and zeolite structure framework damage. Among them, the 1.2 wt% sample showed the widest active temperature window, with a T90 range of 175–435°C. After low-temperature hydrothermal aging treatment, the zeolite structure was eroded and the catalyst activity deteriorated significantly. |
| first_indexed | 2024-04-11T07:34:07Z |
| format | Article |
| id | doaj.art-85e6240bba48491b868c8a66158bd0fe |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-11T07:34:07Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-85e6240bba48491b868c8a66158bd0fe2022-12-22T04:36:48ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-11-011010.3389/fchem.2022.10698241069824The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalystHongling Ye0Kai Ren1Pengfei Wang2Lin Wang3School of Mechanical and Vehicle Engineering, Bengbu University, Bengbu, Anhui, ChinaSchool of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing, ChinaSchool of Mechanical and Vehicle Engineering, Bengbu University, Bengbu, Anhui, ChinaSchool of Mechanical and Vehicle Engineering, Bengbu University, Bengbu, Anhui, ChinaThis work prepared an ISAPO-34/SAPO-18 intergrown zeolite using phosphate organoamine as the structure guiding agent. Physical-chemical characterizations by XRD, SEM, TG, and BET showed that the SAPO-34/SAPO-18 presents a cross-stacked cubic block-like microscopic morphology, with characteristic diffusive diffraction peaks at 2θ = 16–18° and 30–33° and a specific surface area of 557 m2 g−1. The series of copper-based catalysts prepared from SAPO-34/SAPO-18 showed a shift of the active temperature window to a lower temperature with increasing copper content. Moreover, the Brønsted acid site decreased significantly due to copper ion exchange and zeolite structure framework damage. Among them, the 1.2 wt% sample showed the widest active temperature window, with a T90 range of 175–435°C. After low-temperature hydrothermal aging treatment, the zeolite structure was eroded and the catalyst activity deteriorated significantly.https://www.frontiersin.org/articles/10.3389/fchem.2022.1069824/fullintergrown structurecopper-based zeolite catalystselective catalytic reductionnitrogen oxideslow-temperature hydrothermal deactivation |
| spellingShingle | Hongling Ye Kai Ren Pengfei Wang Lin Wang The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst Frontiers in Chemistry intergrown structure copper-based zeolite catalyst selective catalytic reduction nitrogen oxides low-temperature hydrothermal deactivation |
| title | The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst |
| title_full | The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst |
| title_fullStr | The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst |
| title_full_unstemmed | The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst |
| title_short | The investigation of the NH3-SCR performance of a copper-based AEI-CHA intergrown zeolite catalyst |
| title_sort | investigation of the nh3 scr performance of a copper based aei cha intergrown zeolite catalyst |
| topic | intergrown structure copper-based zeolite catalyst selective catalytic reduction nitrogen oxides low-temperature hydrothermal deactivation |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2022.1069824/full |
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