Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite
The development of efficient Pt-supported zeolite catalysts with tunable micro/mesopore structures for the removal of volatile organic compounds (VOCs) presents a major challenge. Herein, hierarchical Pt/Y zeolites with tunable mesopores are fabricated by varying the etching time before the surfacta...
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MDPI AG
2022-06-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/6/622 |
| _version_ | 1797489083232026624 |
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| author | Min-Ryeong Kim Suhan Kim |
| author_facet | Min-Ryeong Kim Suhan Kim |
| author_sort | Min-Ryeong Kim |
| collection | DOAJ |
| description | The development of efficient Pt-supported zeolite catalysts with tunable micro/mesopore structures for the removal of volatile organic compounds (VOCs) presents a major challenge. Herein, hierarchical Pt/Y zeolites with tunable mesopores are fabricated by varying the etching time before the surfactant-templated crystal rearrangement method and used as catalyst supports for VOC oxidation. The hierarchical Pt/Y zeolites provided an excellent environment for Pt nanoparticle loading with abundant accessible acidic sites. The catalytic performance of the obtained hierarchical Pt/Y zeolites is analyzed using toluene oxidation, with the modified zeolites exhibiting improved catalytic activities. The hierarchical Pt/Y zeolites exhibited higher catalytic toluene oxidation activities than non-hierarchical Pt/Y zeolites. Pt/Y-6h demonstrated the highest catalytic toluene oxidation activity of the prepared catalysts, with a T<sub>90</sub> of 149 °C, reaction rate of 1.15 × 10<sup>−7</sup> mol g<sub>cat</sub><sup>−1</sup> s<sup>−1</sup>, turnover frequency of 1.20 × 10<sup>−2</sup> s<sup>−1</sup>, and an apparent activation energy of 66.5 kJ mol<sup>−1</sup> at 60,000 mL g<sup>−1</sup> h<sup>−1</sup> at a toluene concentration of 1000 ppm. This study will facilitate the fine-tuning of hierarchically porous materials to improve material properties and achieve higher catalytic performance toward VOC oxidation. |
| first_indexed | 2024-03-10T00:11:28Z |
| format | Article |
| id | doaj.art-c6c7a4d54dd44b18bbf608fd7562e999 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T00:11:28Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-c6c7a4d54dd44b18bbf608fd7562e9992023-11-23T15:59:29ZengMDPI AGCatalysts2073-43442022-06-0112662210.3390/catal12060622Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y ZeoliteMin-Ryeong Kim0Suhan Kim1Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, KoreaGreen Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan 44413, KoreaThe development of efficient Pt-supported zeolite catalysts with tunable micro/mesopore structures for the removal of volatile organic compounds (VOCs) presents a major challenge. Herein, hierarchical Pt/Y zeolites with tunable mesopores are fabricated by varying the etching time before the surfactant-templated crystal rearrangement method and used as catalyst supports for VOC oxidation. The hierarchical Pt/Y zeolites provided an excellent environment for Pt nanoparticle loading with abundant accessible acidic sites. The catalytic performance of the obtained hierarchical Pt/Y zeolites is analyzed using toluene oxidation, with the modified zeolites exhibiting improved catalytic activities. The hierarchical Pt/Y zeolites exhibited higher catalytic toluene oxidation activities than non-hierarchical Pt/Y zeolites. Pt/Y-6h demonstrated the highest catalytic toluene oxidation activity of the prepared catalysts, with a T<sub>90</sub> of 149 °C, reaction rate of 1.15 × 10<sup>−7</sup> mol g<sub>cat</sub><sup>−1</sup> s<sup>−1</sup>, turnover frequency of 1.20 × 10<sup>−2</sup> s<sup>−1</sup>, and an apparent activation energy of 66.5 kJ mol<sup>−1</sup> at 60,000 mL g<sup>−1</sup> h<sup>−1</sup> at a toluene concentration of 1000 ppm. This study will facilitate the fine-tuning of hierarchically porous materials to improve material properties and achieve higher catalytic performance toward VOC oxidation.https://www.mdpi.com/2073-4344/12/6/622hierarchical Pt/Y zeolitetoluene oxidationtunable mesoporesurfactant-templatedheterogeneous catalysis |
| spellingShingle | Min-Ryeong Kim Suhan Kim Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite Catalysts hierarchical Pt/Y zeolite toluene oxidation tunable mesopore surfactant-templated heterogeneous catalysis |
| title | Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite |
| title_full | Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite |
| title_fullStr | Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite |
| title_full_unstemmed | Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite |
| title_short | Enhanced Catalytic Oxidation of Toluene over Hierarchical Pt/Y Zeolite |
| title_sort | enhanced catalytic oxidation of toluene over hierarchical pt y zeolite |
| topic | hierarchical Pt/Y zeolite toluene oxidation tunable mesopore surfactant-templated heterogeneous catalysis |
| url | https://www.mdpi.com/2073-4344/12/6/622 |
| work_keys_str_mv | AT minryeongkim enhancedcatalyticoxidationoftolueneoverhierarchicalptyzeolite AT suhankim enhancedcatalyticoxidationoftolueneoverhierarchicalptyzeolite |