Fig. 4: Control experiment.
From: Constructing multiple active sites in iron oxide catalysts for improving carbonylation reactions

a The linear relationship between the content of Ovac and yield; (b) Recycling experiment; (c) Quasi in situ 1H NMR spectra of the aminocarbonylation of iodobenzene; (d) In situ DRIFT spectra for the aminocarbonylation of iodobenzene over 1.0 Fe2O3-Ovac.