Two-step water-splitting at 1273–1623K using yttria-stabilized zirconia-iron oxide solid solution via co-precipitation and solid-state reaction

Evaluation of nanoparticle zirconia supports in the thermochemical water splitting cycle over iron oxides

“…However, the data in Figure 2 reveal that particle growth in subsequent steps is limited and is only notable for the materials with the highest iron loadings. The hydrogen production values over these materials are similar [27,32] or even better [34] than previously reported values.…”

“…Although previous studies [10,20,[25][26][27][28][29][32][33][34] have investigated the reactivity of zirconiasupported and yttria-stabilized zirconia-supported iron oxides, no study has characterized these materials in detail and critically compared different zirconia supports to further the understanding of these materials in the production of hydrogen via thermochemical water splitting. In this study, nanoparticle zirconia supports were used in an attempt to increase the interaction between the iron oxide and the zirconia support, and the results were compared to iron oxide supported on a conventional zirconia support.…”

Syngas production from H2O and CO2 over Zn particles in a packed‐bed reactor

“…[8][9][10][11][12][13][14][15][16][17] Previous works have examined various chemical aspects of the second step, including identification of reaction [27][28][29][30][31][32][33] These configurations offered high Zn-to-ZnO conversions over short residence times due to augmented reaction kinetics and heat/mass transfer. However, the reactions primarily occurred heterogeneously outside the aerosol jet flow on surfaces with Zn deposition, making the ZnO recovery, process control and scaleup problematic.…”

A review on solar thermal syngas production via redox pair-based water/carbon dioxide splitting thermochemical cycles

“…Various ferrite powders synthesis techniques have been pursued from solid, liquid or gaseous precursors, among others co-precipitation [95], aerial oxidation of aqueous suspensions of Fe(II) hydroxide [96,97], sol-gel [98], atomic layer deposition [99,100], combustion synthesis [86,101] and spray pyrolysis [102]. Comparative testing of ferrite powders has identified the temperature ranges recommended for cyclic operation as well as the effects of process parameters on H 2 /O 2 yields [86,89,103].…”