Improved selectivity and decreased formation of overoxygenated byproducts were achieved by using a MeCN/H2O biphasic system for the iron‐catalyzed oxidation of benzene to phenol with H2O2. Under optimized reaction conditions with 5‐carboxy‐2‐methylpyrazine‐N‐oxide as the ligand for iron [Eq. (1)] a benzene conversion of 8.6 % and selectivities based on benzene and H2O2 of 97 and 88 %, respectively, were obtained.

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We investigated the 1,2-dichloroethane (DCE) adsorption process into an organophilic zeolite mordenite. A combined diffractometric, thermogravimetric and gas chromatographic approach enabled to obtain clear evidence of DCE adsorption in mordenite channels as well as to pinpoint the exact location of the organic species found in the structure. Rietveld refinement revealed the incorporation of 2.5 DCE molecules and approximately 4 water molecules within the mordenite channel system, in very good agreement with the weight loss given by TG analysis and the saturation capacity determined by the adsorption isotherm. This relevant incorporation of DCE molecules caused a remarkable increase in the dimension of the 12-ring, when compared to the parent zeolite. The distances between the oxygen atoms of the water molecules from the chlorine atoms of the organic molecule (W-Cl1 = 2.34 Å, W-Cl2 = 2.53 Å) suggest that different DCE molecules could be connected by means of hydrogen bonds through water, to form a DCE and water molecule complex. The isotherm adsorption model for organic compounds from an aqueous dilute solution was selected based on the results of the structural investigation. Graphical abstract 2 HighlightsEvidences of DCE adsorption into mordenite are reported. 2.5 DCE and 4 water molecules were adsorbed into the mordenite framework. The adsorption of DCE into mordenite caused distortions of the 12-ring channels.