File Name : figure s1.tif Caption : fig. s1. characterization of bz-ac/nh₃ and bz-af/nh₃ samples: (a), xrd patterns, (b) ar adsorption isotherms, and sem images of (c) bz-ac/nh₃ and (d) bz-af/nh₃. the isotherms were offset vertically by 200 cm³ g^-1 stp. File Name : figure s2.tif Caption : fig. s2. pore size distributions of (a)mz-ac and (b) mz-af, calculated by non-linear density functional theory method. File Name : figure s3.tif Caption : fig. s3. regeneration of the mz-af and bz-af catalysts in beckmann rearrangement of cyclohexanone oxime (cho). (a) conversion of cho and (b) selectivity to ε-caprolactam (cl) over mz-af as a function of the time-on-stream. (c) cho conversion and (d) cl selectivity over bz-af. reaction conditions: 0.884 m oxime in ethanol; whsv = 3.4 h^-1; temp = 350 °c; n₂ flow rate = 15 cm³ min^-1. the catalysts were heated in an air flow (flow rate: 50 cm³ min^-1) for their regeneration at the denoted temperatures, and then cooled down to the reaction temperature.