Ce promoted lanthana-zirconia supported Ni catalyst system: A ternary redox system for hydrogen production

Hydrogen production from dry reforming of methane (DRM) over chief Ni-based catalyst is cutting edge research area due to environmental consciousness about reducing global warming gases (CH4 and CO2) greener route synthesis. Herein, ceria promoted lanthanum-zirconia supported Ni system (5NixCe/LaZr; x = 0, 1, 1.5, 2, 2.5, 3, 5 wt.%) prepared by the wet impregnation method. It further characterized using X-ray diffraction, infrared spectroscopy, ultraviolet temperature-programmed cyclic experiments. 2.5 wt.% lanthana-zirconia (5Ni2.5Ce/LaZr) has thermally stabilized support, wide Ni-LaZr interface for CH4 decomposition, basic surfaces (La2O3-ZrO2) CO2 interaction, coordinated La+3 sites (as La2O2CO3 species), low band gap oxygen vacancy carrying mobile (which replenished CO2). Altogether, it produces more than 87 % hydrogen yield. This thorough study fine correlation will help design industrially suitable through DRM.