(175c) Solar Thermochemical Splitting of H2o/CO2 Using Sol-Gel Derived Ferrite Materials

Authors: 
Bhosale, R., Qatar University
Takalkar, G., Qatar University
The drastic increase in the CO2 emission is due to the rapid industrialization and extreme consumption of fossil fuels. Conversion of captured CO2 into value added chemicals such as synthetic fuels via solar driven metal oxide based thermochemical H2O/CO2 splitting cycle is attractive and currently under investigation throughout the world. The syngas produced via the above-mentioned process can be directly converted into transportation fuels via catalytic Fischer-Tropsch (FT) technology. Hence, the solar driven thermochemical H2O/CO2 splitting process provides a sustainable alternative energy resource with the reduction in the dependency on petroleum products.

Among the various metal oxides investigated in past, Ni-ferrite and Co-ferrite are considered to be the best materials in the ferrite class for the production of H2 and CO via thermochemical H2O/CO2 splitting cycle. It was reported by various researchers (including us) that these ferrites are capable of producing higher levels of H2/CO in multiple thermochemical cycles as compared to other ferrite materials.

To investigate further, in this study we have synthesized Ni-Co-ferrite (combining Ni-ferrite and Co-ferrite) by using propylene oxide assisted sol-gel method. We believe that this combination will provide a chance to utilize the advantages of both Ni-ferrite and Co-ferrite towards splitting of H2O/CO2 in multiple cycles.