Catalytic combustion of propane over Zr-modified Co3O4 catalysts: An experimental and theoretical study

Effect of Calcination Conditions on Co3O4 Catalysts in the Total Oxidation of Toluene and Propane

“…Moreover, the Co 3 O 4 catalysts that performed better than Co-350D were mostly prepared by hydrothermal or hard-templating methods, using surfactants, and consuming much energy. Regarding propane oxidation, it is clear that Co-350D precedes Co 3 O 4 -C100-550 [12], C-350 [13], CoDP [14], Co 3 O 4 -H [15], Mic-Co 3 O 4 [16], Co 3 O 4 -AC [18] Co 4 Zr 1 [19], and Ca-Co 3 O 4 -Ac [20], while it keeps pace with Co-SAS 10% water [17]. The comparison results further proved the superiority of Co-350D in the total oxidation of toluene and propane.…”

“…However, viewing from an economic and sustainable perspective, transition metal oxides that exhibit comparable activity to noble metals could be a better choice. Among transition metal oxides, Co 3 O 4 nanocatalysts have been proven to be very active in the total oxidation of toluene [3][4][5][6][7][8][9][10][11] and propane [12][13][14][15][16][17][18][19][20], two representative model VOCs. According to the well-accepted redox reaction mechanisms [21], the activity of Co 3 O 4 is mainly governed by its reducibility and oxygen mobility, and these redox properties are generally related to the crystallite size, strain, structural defects, and surface cobalt oxidation state of Co 3 O 4 .…”

Improving the Discharge Rate of Co3O4-Based Thermochemical Energy Storage Material with Eutectic Doping of Zr

“…30 The presence of Zr ions in a highvalent state often changes the surface electronic structure and the formation of surface defects. 31,32 The reported interaction between Co and Zr in other fields has inspired its potential use in TCES systems. In this study, a series of TCES media with varying Co/Zr ratios were synthesized.…”

“…In the field of catalysis, the eutectic doping of Zr into Co-based oxides has been shown to increase the concentration of Co ions and surface-active oxygen species, thereby enhancing cobalt catalysis activation . The presence of Zr ions in a high-valent state often changes the surface electronic structure and the formation of surface defects. , The reported interaction between Co and Zr in other fields has inspired its potential use in TCES systems. In this study, a series of TCES media with varying Co/Zr ratios were synthesized.…”