2007
DOI: 10.1590/s0100-40422007000300021
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Redução catalítica seletiva de óxidos de nitrogênio sobre hematita contendo cobre

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“…Magnetite (Fe3O4) and maghemite (γ-Fe2O3) have similar spinel-like crystallographic structures, so it is not possible to differentiate them by diffractogram (OLIVEIRA; FABRIS; PEREIRA, 2013). However, according to other authors (SCHWERTMANN, 2000), maghemite (γ-Fe2O3) is a dark brown solid while magnetite (Fe3O4) is black (FERREIRA et al, 2007). Figure 3 shows the color of samples obtained by different methods.…”
Section: Resultsmentioning
confidence: 89%
“…Magnetite (Fe3O4) and maghemite (γ-Fe2O3) have similar spinel-like crystallographic structures, so it is not possible to differentiate them by diffractogram (OLIVEIRA; FABRIS; PEREIRA, 2013). However, according to other authors (SCHWERTMANN, 2000), maghemite (γ-Fe2O3) is a dark brown solid while magnetite (Fe3O4) is black (FERREIRA et al, 2007). Figure 3 shows the color of samples obtained by different methods.…”
Section: Resultsmentioning
confidence: 89%