Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene
Monolithic catalysts are widely used in industrial catalysis. However, in the preparation of a monolithic catalyst, the traditional methods have some drawbacks such as low washcoat uploading ratio and poor uniformity. In the present work, the effects of Pd/Ce loading and catalyst components on the c...
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MDPI AG
2022-02-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/2/225 |
| _version_ | 1797481917134667776 |
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| author | Wenjun Liang Xiujuan Shi Qinglei Li Sida Ren Guobin Yin |
| author_facet | Wenjun Liang Xiujuan Shi Qinglei Li Sida Ren Guobin Yin |
| author_sort | Wenjun Liang |
| collection | DOAJ |
| description | Monolithic catalysts are widely used in industrial catalysis. However, in the preparation of a monolithic catalyst, the traditional methods have some drawbacks such as low washcoat uploading ratio and poor uniformity. In the present work, the effects of Pd/Ce loading and catalyst components on the catalytic abatement of toluene were investigated. The acid treatment of the substrate, the particle size of the slurry and the dispersant on the uniformity of the washcoat and the catalytic performance were also explored. Characterisation was achieved via BET, SEM, zeta potential and laser grain-size analyses. The results showed that the catalytic activity of the catalyst increased with the increasing of the Ce content. It was found that the 0.2Pd-0.3Ce/γ-Al<sub>2</sub>O<sub>3</sub> catalysts had the best toluene catalytic activity. The pretreatment of the cordierite with 20% HCl could improve the properties of the cordierite. It was also found that reducing the particle size of the washcoat and adding dispersant PAA could effectively improve the stability of the suspension and the uniformity of the washcoat. When 20% HCl pretreatment was used, the toluene catalytic activity of the monolith catalyst prepared by cordierite increased, in which T<sub>10</sub> and T<sub>90</sub> decreased by about 5 °C. Decreasing the particle size and dispersant also promoted the efficiency of catalytic degradation. |
| first_indexed | 2024-03-09T22:21:25Z |
| format | Article |
| id | doaj.art-a6f3dcd7f1e54d8a981e66931deb4a87 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T22:21:25Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-a6f3dcd7f1e54d8a981e66931deb4a872023-11-23T19:13:23ZengMDPI AGCatalysts2073-43442022-02-0112222510.3390/catal12020225Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of TolueneWenjun Liang0Xiujuan Shi1Qinglei Li2Sida Ren3Guobin Yin4Key Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaMonolithic catalysts are widely used in industrial catalysis. However, in the preparation of a monolithic catalyst, the traditional methods have some drawbacks such as low washcoat uploading ratio and poor uniformity. In the present work, the effects of Pd/Ce loading and catalyst components on the catalytic abatement of toluene were investigated. The acid treatment of the substrate, the particle size of the slurry and the dispersant on the uniformity of the washcoat and the catalytic performance were also explored. Characterisation was achieved via BET, SEM, zeta potential and laser grain-size analyses. The results showed that the catalytic activity of the catalyst increased with the increasing of the Ce content. It was found that the 0.2Pd-0.3Ce/γ-Al<sub>2</sub>O<sub>3</sub> catalysts had the best toluene catalytic activity. The pretreatment of the cordierite with 20% HCl could improve the properties of the cordierite. It was also found that reducing the particle size of the washcoat and adding dispersant PAA could effectively improve the stability of the suspension and the uniformity of the washcoat. When 20% HCl pretreatment was used, the toluene catalytic activity of the monolith catalyst prepared by cordierite increased, in which T<sub>10</sub> and T<sub>90</sub> decreased by about 5 °C. Decreasing the particle size and dispersant also promoted the efficiency of catalytic degradation.https://www.mdpi.com/2073-4344/12/2/225PdCeO<sub>2</sub>monolithic catalystcatalytic performance |
| spellingShingle | Wenjun Liang Xiujuan Shi Qinglei Li Sida Ren Guobin Yin Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene Catalysts Pd CeO<sub>2</sub> monolithic catalyst catalytic performance |
| title | Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene |
| title_full | Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene |
| title_fullStr | Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene |
| title_full_unstemmed | Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene |
| title_short | Effect of Pd/Ce Loading and Catalyst Components on the Catalytic Abatement of Toluene |
| title_sort | effect of pd ce loading and catalyst components on the catalytic abatement of toluene |
| topic | Pd CeO<sub>2</sub> monolithic catalyst catalytic performance |
| url | https://www.mdpi.com/2073-4344/12/2/225 |
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