Abstract:
Immobilized titania (TiO 2 ) nanoparticles semiconductor on stainless steel mesh was used for photocatalytic conversion of CO 2 and CH 4 . This study utilized experimental design and process optimization tools to maximize the desired response using response surface methodology (RSM) with central composite rotatable design (CCRD). The experimental parameters were stainless steel mesh size, titania nanoparticles loading, calcination temperature, UV light power and initial ratios of CO 2 :CH 4 :N 2 in feed. The optimal conditions were determined as follows: stainless steel mesh size of 140, 4g of coated titania nanoparticles on mesh, calcination temperature of 600°C, UV light power of 250W and 10% of CO 2 in feed to achieve a maximum CO 2 conversion of 37.87%. Correspondingly, the selectivity of products were 4.66%, 4.28%, 3.97% and 87.09%, for ethane, acetic acid, formic acid and methyl acetate, respectively.
- Saeed Delavarai and NorAishah Saidina Amin (2015) Photocatalytic conversion of CO2 and CH4 over immobilized titania nanoparticles coated on mesh: Optimization and kinetic study, Applied Energy, 162, 1171-1185. DOI: https://doi.org/10.1016/j.apenergy.2015.03.125
