A review on roles of pretreatment atmospheres for the preparation of efficient Ni-based catalysts

Synthesis of well dispersed and strongly interacted Ni-based catalysts benefits the catalytic performances in high-temperature reactions. Significant works have been reported on roles calcination environments. During catalyst precursors (pretreatment or activation other cases), type atmospheres greatly affects size, metal-support interaction (MSI) surface properties catalysts, influencing performances. In this review, it is first time to comprehensively summarize influences three categories – oxidative (air, O2 CO2), inert (N2, Ar) reductive (H2, NO, N2O CO) gases, physiochemical which provides a facile general strategy optimize formation metal nanoparticles supports.