Degradation of acetaldehyde by Ag/TiO2 photocatalyst coated on polyester air filter
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Author list: Sukitpong J., Chiarakorn S.
Publisher: Elsevier
Publication year: 2019
Journal: International Journal of Hydrogen Energy (0360-3199)
Volume number: 373
Issue number: 1
ISSN: 0360-3199
Languages: English-Great Britain (EN-GB)
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Abstract
A stainless steel micro-channel reactor was tailor-made to an in house-design for process intensification propose. The reactor was used for a two-step thermochemical cycles of H2O and CO2 co-splitting reaction, in the presence of La0.3Sr0.7Co0.7Fe0.3O3 (LSCF). LSCF was coated inside the reactor using wash-coat technique. Oxygen storage capacity of LSCF was determined at 4465 μmol/g, using H2-TPR technique. H2O-TPSR and CO2-TPSR results suggested that a formation of surface hydroxyl group was the cause of H2O splitting favorable behavior of LSCF. Optimal operating reduction/oxidation temperature was found at 700 °C, giving 2266 μmol/g of H2, 705 μmol/g of CO, and 67% of solid conversion, when the H2O and CO2 ratio was 1 to 1, and WSHV was 186,000 mL/g.h. Activation energy of H2O spitting and CO2 splitting was estimated at 87.33 kJ/mol, and 102.85 kJ/mol The pre-exponential factor of H2O splitting and CO2 splitting was 595.24 s−1 and 698.79 s−1, respectively. © 2019 Hydrogen Energy Publications LLC
Keywords
Kinetics, LSCF, Micro-channel reactor, Thermochemical cycles
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