Effects of substituting iron for aluminum on the low-temperature catalytic activity and sulfur resistance of hydrotalcite-derived LNT catalysts

Autor:	Yu Lyu, Gang Lyu, Yunqing Li, Bo Li, Ke Chen, Chonglin Song, Zhenguo Li, Suozhu Pan
Rok vydání:	2022
Předmět:	Environmental Engineering Magnesium Hydroxide Nitrates Health Toxicology and Mutagenesis Iron Public Health Environmental and Occupational Health Temperature Aluminum Hydroxide General Medicine General Chemistry Pollution Catalysis Environmental Chemistry Sulfur Aluminum
Zdroj:	Chemosphere. 304
ISSN:	1879-1298
Popis:	The storage and reduction of NOx on a series of Fe-modified hydrotalcite-based lean NOx trap catalysts were assessed, together with the product selectivity. The crystal structures and micromorphologies of these materials were characterized using X-ray diffraction and scanning electron microscopy, while in situ diffuse reflectance Fourier transform infrared spectroscopy was used to evaluate the evolution of transition state species. The introduction of Fe was found to improve the synergistic interaction between the Mg and Fe in the hydrotalcite structure, allowing these catalysts to work efficiently at low temperatures. In addition, both Pt/BaO/MgAlO and Pt/BaO/MgFeO catalysts exhibited better NOx adsorption and reduction performance compared with Pt/BaO/Al
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d706be05ea96aefd94bf71b5d2e5f23b https://pubmed.ncbi.nlm.nih.gov/35667506 Zobrazit plný text záznamu Full Text from ScienceDirect