Selective catalytic reduction of NO by Fe-Mn nanocatalysts: effect of structure type
| Autor: | Mohammad Hasan Eikani, Seyed Mahdi Latifi, Alireza Salehirad, Mehdi Ardjmand, Vahid Zabihi |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Health Toxicology and Mutagenesis Spinel Temperature Selective catalytic reduction General Medicine 010501 environmental sciences engineering.material Bixbyite 01 natural sciences Pollution Catalysis Nanomaterial-based catalyst Chemical engineering Ammonia Specific surface area engineering Environmental Chemistry Crystallite Oxidation-Reduction 0105 earth and related environmental sciences Perovskite (structure) |
| Zdroj: | Environmental Science and Pollution Research. 28:39159-39167 |
| ISSN: | 1614-7499 0944-1344 |
| Popis: | One of the most prominent features of selective catalytic reduction (SCR) of NOx is using a well-structured catalyst to advance the reaction in a desirable condition. At the present work, various crystal structures of Fe-Mn nanocatalysts, FeMn2O4 spinel, FeMnO3 perovskite and Fe2O3 (hematite)/Mn2O3 (bixbyite) nanocatalysts fabricated by co-precipitation method were evaluated for selective catalytic reduction of NO by NH3 (NH3-SCR). The studies specified that the crystal structure type had a high impact on structural properties and thereby the catalytic performance of the samples. The physicochemical characteristics of the nanocatalysts including molar ratio of metals, phase composition, crystallite size, particle size distribution, specific surface area, average pore diameter, pore volume, agglomeration degree, and amount and strength of the acidic site on the catalysts surfaces have been distinguished. From the catalytic activity evaluation, it was identified that the perovskite nanocatalyst had the best performance in NH3-SCR reaction. |
| Databáze: | OpenAIRE |
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