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Cited by 46 publications
(6 citation statements)
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“…At low Zn/Cr ratios (Fig. 5c, d) the peaks are broadened and shifted to higher values and the broad signals are probably due to the Cr 3+ species present in the catalyst [38]. The broad ESR signal of Cr 3+ can be due to CuCr 2 O 4 species [39], which is observed at low Zn/Cr ratios in XRD analysis.…”
Section: Electron Spin Resonance Analyses (Esr)mentioning
confidence: 86%
“…At low Zn/Cr ratios (Fig. 5c, d) the peaks are broadened and shifted to higher values and the broad signals are probably due to the Cr 3+ species present in the catalyst [38]. The broad ESR signal of Cr 3+ can be due to CuCr 2 O 4 species [39], which is observed at low Zn/Cr ratios in XRD analysis.…”
Section: Electron Spin Resonance Analyses (Esr)mentioning
confidence: 86%
“… 6 It is known from the literature that chromia is well dispersed, 5 and 15% of the total surface coverage is assumed for the model, which is consistent with the literature estimations and measurements. 47 , 48 With 4.457 chromium atoms per 1 nm 2 of the chromia surface, the model catalyst thus exhibits 222 μmol of exposed Cr active sites per 1 g (61.7 μmol/mL).…”
Section: Methodsmentioning
confidence: 99%
“…Chromium trioxide may begin to melt and decompose around 200°C and 250°C, respectively, giving rise to mixed valence species Cr 3 O 8 , Cr 2 O 5 , Cr 4+ in the form of CrO 2 , and lastly Cr 2 O 3 . At the final stage, the material would appear to be green . It is important to note that there is some disagreement as to the valence states of Cr 3 O 8 and Cr 2 O 5 , but based on previous work and the available literature, the authors attribute these species to mixed valence Cr 3+ and 6+ species …”
Section: Resultsmentioning
confidence: 99%