Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter
Zinc (Zn) and cerium (Ce) modified hierarchical ZSM-5 (HZ) catalysts were prepared by incipient wetness impregnation, and their catalytic performances in methanol to aromatics reaction were evaluated in a fixed-bed reactor operating at 400°C under 0.1 MPa and WHSV of 1.0 h−1. The structure, acidity,...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/7408284 |
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| author | Zhenhao Wei Yufan Ji Yiping Huang Jingjing Huang Yunguo Huang Changhai Yue Junzhou Li Mingwei Tang Yunfang Liu Hanfei Liu Hao Zhu Kai Zhu Fan Yang Xuedong Zhu |
| author_facet | Zhenhao Wei Yufan Ji Yiping Huang Jingjing Huang Yunguo Huang Changhai Yue Junzhou Li Mingwei Tang Yunfang Liu Hanfei Liu Hao Zhu Kai Zhu Fan Yang Xuedong Zhu |
| author_sort | Zhenhao Wei |
| collection | DOAJ |
| description | Zinc (Zn) and cerium (Ce) modified hierarchical ZSM-5 (HZ) catalysts were prepared by incipient wetness impregnation, and their catalytic performances in methanol to aromatics reaction were evaluated in a fixed-bed reactor operating at 400°C under 0.1 MPa and WHSV of 1.0 h−1. The structure, acidity, and state of Zn species of the Zn/Ce modified HZ catalysts were investigated via several characterization techniques, including XRD, NH3-TPD, H2-TPR, nitrogen adsorption, and XPS. The results showed that the aromatization activity of 2 wt% Zn-modified HZ (2% Zn/HZ) could be significantly enhanced by loading 0.6 wt% Ce, which was mainly attributed to the increase in surface ZnOH+ species. Moreover, it was found that Ce inhibited pore blockage caused by Zn. Consequently, compared to 2% Zn/HZ, 2% Zn-0.6% Ce/HZ exhibited higher aromatic selectivity and longer catalyst lifetime. |
| format | Article |
| id | doaj-art-b2c1c4ee4c3144f4bb28bc9d0611b79b |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-b2c1c4ee4c3144f4bb28bc9d0611b79b2025-02-03T01:06:50ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/7408284Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a PromoterZhenhao Wei0Yufan Ji1Yiping Huang2Jingjing Huang3Yunguo Huang4Changhai Yue5Junzhou Li6Mingwei Tang7Yunfang Liu8Hanfei Liu9Hao Zhu10Kai Zhu11Fan Yang12Xuedong Zhu13China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.China Construction Industrial & Energy Engineering Group Co. Ltd.School of Chemical EngineeringSchool of Chemical EngineeringZinc (Zn) and cerium (Ce) modified hierarchical ZSM-5 (HZ) catalysts were prepared by incipient wetness impregnation, and their catalytic performances in methanol to aromatics reaction were evaluated in a fixed-bed reactor operating at 400°C under 0.1 MPa and WHSV of 1.0 h−1. The structure, acidity, and state of Zn species of the Zn/Ce modified HZ catalysts were investigated via several characterization techniques, including XRD, NH3-TPD, H2-TPR, nitrogen adsorption, and XPS. The results showed that the aromatization activity of 2 wt% Zn-modified HZ (2% Zn/HZ) could be significantly enhanced by loading 0.6 wt% Ce, which was mainly attributed to the increase in surface ZnOH+ species. Moreover, it was found that Ce inhibited pore blockage caused by Zn. Consequently, compared to 2% Zn/HZ, 2% Zn-0.6% Ce/HZ exhibited higher aromatic selectivity and longer catalyst lifetime.http://dx.doi.org/10.1155/2022/7408284 |
| spellingShingle | Zhenhao Wei Yufan Ji Yiping Huang Jingjing Huang Yunguo Huang Changhai Yue Junzhou Li Mingwei Tang Yunfang Liu Hanfei Liu Hao Zhu Kai Zhu Fan Yang Xuedong Zhu Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter Advances in Materials Science and Engineering |
| title | Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter |
| title_full | Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter |
| title_fullStr | Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter |
| title_full_unstemmed | Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter |
| title_short | Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter |
| title_sort | methanol aromatization over zn and ce modified hierarchical zsm 5 catalysts effect of ce as a promoter |
| url | http://dx.doi.org/10.1155/2022/7408284 |
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