Effective oxidative transformation of toluene into valuable products was achieved under solvent-free reaction conditions with as-prepared nickel nanoparticles as heterogeneous catalysts in liquid phase. The crystalline structure and size the were confirmed by X-ray diffractometry (XRD) dynamic light scattering (DLS). catalytic implications different forms (face-centred cubic: fcc; hexagonal clo...

As a typical spinel ferrite, NiFe2O4 is suitable for use in gas sensors. Herein, we report the fabrication of porous, tremella-like assembled using ultrathin nanosheets via coordination Ni2+ and Fe2+ with 1,4-phenylenediboronic acid. The optical band gap estimated to be about 1.7 eV. Furthermore, sensor annealed at 400 °C exhibits low detection limit 50 ppb, fast response/recovery time (11.6 s/...

Au/CeO₂ solids were prepared by two methods: deposition-precipitation (DP) and impregnation (Imp). The prepared solids were calcined under air at 400°C. Both types of catalysts have been tested in the total oxidation of propylene, toluene, carbon monoxide, and carbon black. Au/CeO₂-DP solids were the most reactive owing to the high number of gold nanoparticles and Au⁺ species and the low concen...

Red mud waste from the aluminium industry was modified by leaching using hydrochloric acid or oxalic with additives, followed precipitation evaporation. The prepared catalysts were characterized in detail and tested for toluene total oxidation. samples of leachate adding a base gave much better performance catalytic oxidation than ones just evaporating leachate. These improved performances can ...