Improving the catalytic activity in dry reforming reaction by enhancing the oxygen storage capacity of Ce0.8Zr0.2O2 support through hydrogen heat-treatment

Improving the Performance of a Co-CeO2 Catalyst for Hydrogen Production via Water Gas Shift Reaction by Addition of Transition Metal Oxides

“…The 3d 3/2 peaks were observed at 899.5, 900.3, 902.0, 907.1, and 916.1 eV, whereas the 3d 5/2 peaks were observed at 881.3, 882.1, 883.8, 888.9, and 897.9 eV. 55 The spin−orbital splitting energy difference was approximately 18.3 eV. The Ce 3+ state is related to the v 0 , v', u 0 , and u' peaks, whereas the Ce 4+ state is associated with the v, v″, v"', u, u", and u"' peaks.…”

“…The Ce 3d 3/2 states are labeled as u 0 , u, u’, u”, and u”’, and the Ce 3d 5/2 states are labeled as v 0 , v, v’, v”, and v”’. The 3d 3/2 peaks were observed at 899.5, 900.3, 902.0, 907.1, and 916.1 eV, whereas the 3d 5/2 peaks were observed at 881.3, 882.1, 883.8, 888.9, and 897.9 eV . The spin–orbital splitting energy difference was approximately 18.3 eV.…”

Recent advances in the design of high-performance cobalt-based catalysts for dry reforming of methane

“…The generation and migration of oxygen vacancies are vital properties for multivalent compounds such as ZrO 2 , CeO 2 and TiO 2 in promoting the redox cycle of the catalysts themselves. 178–180 These metal oxides release active oxygen under a reducing atmosphere and store oxygen under an oxidization atmosphere, resulting in the generation and filling of oxygen vacancies. The oxygen vacancy on the support or promoter surface is also a main site for the activation of CO 2 activation and the breaking of the C–O bond, which greatly improves the migration of oxygen.…”