Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature
The critical need to enhance the quality of indoor air leads to the improvement of catalyst activity for the removal of formaldehyde. Sepiolite can be utilized in catalytic reactions for its unique structure, composition and high surface area. The adhesion between sepiolite fibers and the blocked mi...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/11/1299 |
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| author | Yidi Zhou Xin Min Lijuan Wang Yajing Zhao Bozhi Yang Xiaoxian Wu Dan Zhang Xifeng Hou Yan’gai Liu Minghao Fang Zhaohui Huang |
| author_facet | Yidi Zhou Xin Min Lijuan Wang Yajing Zhao Bozhi Yang Xiaoxian Wu Dan Zhang Xifeng Hou Yan’gai Liu Minghao Fang Zhaohui Huang |
| author_sort | Yidi Zhou |
| collection | DOAJ |
| description | The critical need to enhance the quality of indoor air leads to the improvement of catalyst activity for the removal of formaldehyde. Sepiolite can be utilized in catalytic reactions for its unique structure, composition and high surface area. The adhesion between sepiolite fibers and the blocked microporous channel (by impurities) demands the activation of natural sepiolite through acid treatment. This treatment successfully produces acid-modified sepiolite Pt-supported samples. The impacts of different acid concentrations, Pt loading content and calcination temperature on catalytic activity for formaldehyde (HCHO) oxidation are studied. The catalytic activity of HCHO is characterized and evaluated by techniques including specific surface area, X-ray diffraction, Fourier transform infrared spectrum, X-ray photoelectron spectroscopy and transmission electron microscopy. The results show the maximum specific area of sepiolite at the optimized 0.06 M acid concentration. Among all the prepared samples, the 0.02Pt/Sep catalyst calcined at 500 °C exhibits the highest catalytic activity for the oxidation of HCHO. |
| first_indexed | 2024-03-09T19:12:28Z |
| format | Article |
| id | doaj.art-b028a6882412411fa1e7d59c03429511 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T19:12:28Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-b028a6882412411fa1e7d59c034295112023-11-24T04:05:04ZengMDPI AGCatalysts2073-43442022-10-011211129910.3390/catal12111299Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient TemperatureYidi Zhou0Xin Min1Lijuan Wang2Yajing Zhao3Bozhi Yang4Xiaoxian Wu5Dan Zhang6Xifeng Hou7Yan’gai Liu8Minghao Fang9Zhaohui Huang10Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaEngineering Research Center of Non-Metallic Minerals of Zhejiang Province, Hangzhou 310007, ChinaState Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallurgy, Beijing 100070, ChinaTongLing Boya Duye New Material Technology Co., Ltd., Tongling 244000, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaThe critical need to enhance the quality of indoor air leads to the improvement of catalyst activity for the removal of formaldehyde. Sepiolite can be utilized in catalytic reactions for its unique structure, composition and high surface area. The adhesion between sepiolite fibers and the blocked microporous channel (by impurities) demands the activation of natural sepiolite through acid treatment. This treatment successfully produces acid-modified sepiolite Pt-supported samples. The impacts of different acid concentrations, Pt loading content and calcination temperature on catalytic activity for formaldehyde (HCHO) oxidation are studied. The catalytic activity of HCHO is characterized and evaluated by techniques including specific surface area, X-ray diffraction, Fourier transform infrared spectrum, X-ray photoelectron spectroscopy and transmission electron microscopy. The results show the maximum specific area of sepiolite at the optimized 0.06 M acid concentration. Among all the prepared samples, the 0.02Pt/Sep catalyst calcined at 500 °C exhibits the highest catalytic activity for the oxidation of HCHO.https://www.mdpi.com/2073-4344/12/11/1299HCHOsepioliteacid-modifiedPt nanoparticles |
| spellingShingle | Yidi Zhou Xin Min Lijuan Wang Yajing Zhao Bozhi Yang Xiaoxian Wu Dan Zhang Xifeng Hou Yan’gai Liu Minghao Fang Zhaohui Huang Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature Catalysts HCHO sepiolite acid-modified Pt nanoparticles |
| title | Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature |
| title_full | Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature |
| title_fullStr | Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature |
| title_full_unstemmed | Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature |
| title_short | Acid-Modified Sepiolite-Supported Pt (Noble Metal) Catalysts for HCHO Oxidation at Ambient Temperature |
| title_sort | acid modified sepiolite supported pt noble metal catalysts for hcho oxidation at ambient temperature |
| topic | HCHO sepiolite acid-modified Pt nanoparticles |
| url | https://www.mdpi.com/2073-4344/12/11/1299 |
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