Nano-oxides washcoat for enhanced catalytic oxidation activity toward the perovskite-based monolithic catalyst
| العنوان: | Nano-oxides washcoat for enhanced catalytic oxidation activity toward the perovskite-based monolithic catalyst |
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| المؤلفون: | Tianchao Ai, Chunwang Lv, Haoka Fu, Mingjiang Hu, Hongwei Chen |
| المصدر: | Environmental Science and Pollution Research. 28:37142-37157 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Health, Toxicology and Mutagenesis, Nanoparticle, Cordierite, 010501 environmental sciences, engineering.material, 01 natural sciences, Catalysis, Adsorption, Environmental Chemistry, Monolith, 0105 earth and related environmental sciences, Perovskite (structure), Titanium, geography, geography.geographical_feature_category, Oxides, General Medicine, Calcium Compounds, Pollution, Toluene oxidation, Catalytic oxidation, Chemical engineering, engineering, Oxidation-Reduction |
| الوصف: | In order to explore a superior washcoat material to give full play to the catalytic activity of perovskite active components on the monolithic catalysts, three novel types of LaCoO3/washcoat/cordierite monolith catalysts were prepared by a facile two-step procedure which employed the cordierite honeycomb ceramic as the monolith substrate, the nano-oxides (ZrO2, ɤ-Al2O3, TiO2) as the washcoat, and the perovskite of LaCoO3 as the active components. The blank cordierite, powdered LaCoO3, semi-manufactured monolithic catalysts (washcoat/cordierite), and manufactured monolithic catalysts (LaCoO3/washcoat/cordierite) were characterized by XRD, SEM, XPS, N2 adsorption-desorption, H2-TPR, and ultrasonic test, and their catalytic activities and catalytic stability were evaluated by the toluene oxidation test. The research results indicate that the nanoparticles coated on the cordierite substrate as the washcoat can give full play to the catalytic ability of the LaCoO3 active components and also showed high catalytic stability. However, the catalytic properties of the monolithic catalysts vary notably with the species of nano-washcoat. Among all the catalysts, the porous honeycomb surface structure, uniform distribution, high ratio of surface adsorbed oxygen, and strong reducing ability together give the LaCoO3/ZrO2/cordierite monolithic catalyst the highest catalytic activity on the oxidation of toluene at low temperature, which could be attributed to the excellent interactions of perovskite and nano-ZrO2 washcoat. Therefore, the nano-oxides, especially the nano-ZrO2, have a broad practical application potential for toluene oxidation at low temperature as the washcoat of perovskite-based monolithic catalysts. |
| تدمد: | 1614-7499 0944-1344 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92010c29ac0785333c950e91b52cba5d https://doi.org/10.1007/s11356-021-13354-2 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....92010c29ac0785333c950e91b52cba5d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16147499 09441344 |
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