In Situ FMR Study of the Selective H2S-Oxidation Stability of ε-Fe2O3/SiO2 Catalysts

Topotactic transformation of metal–organic frameworks to iron-based catalysts for the direct hydrogenation of CO2 to olefins

“…3d, Table S3 †). 59,60 The results indicate that the addition of metal additives lead to a phase transition of MFe/C. The addition of Ni has a negligible influence on the phase, while it has an effecton the content of tetrahedral sites and octahedral sites of Fe 3 O 4 .…”

Reactivation of Ni‐TiO2 catalysts in hydrogen flow and in supercritical 2‐propanol—Comparative study by electron spin resonance in situ

“…The high sensitivity of the electron spin resonance (ESR) method, especially in the case of ferromagnetic samples under study (ferromagnetic resonance), allowed the authors to study ε-Fe 2 O 3 nanoparticles formation 31 and their sulfidation under H 2 S atmosphere. 32 The ESR method has been successfully applied to study the formation of Co nanoparticles in Co/Al 2 O 3 catalyst during reduction in hydrogen flow 33 as well as in supercritical 2-PrOH. ESR is sensitive to the magnetic structure of the sample, which makes it suitable for studying nanoparticle formation, 34 the structure and magnetic ordering changes of the dispersed samples, 35 and reactions on the surface of nanoparticles due to their high surface-to-volume ratio.…”

“…In the work of Cherniavsky et al, 30 the advantages of magnetometry combined with thermally programmed reduction (TPR) were reported for the samples of cobalt and iron oxide nanoparticles. The high sensitivity of the electron spin resonance (ESR) method, especially in the case of ferromagnetic samples under study (ferromagnetic resonance), allowed the authors to study ε‐Fe 2 O 3 nanoparticles formation 31 and their sulfidation under H 2 S atmosphere 32 . The ESR method has been successfully applied to study the formation of Co nanoparticles in Co/Al 2 O 3 catalyst during reduction in hydrogen flow 33 as well as in supercritical 2‐PrOH.…”