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Partial Oxidation of Methane over CaO Decorated TiO<sub>2</sub> Nanocatalyst for Syngas Production in a Fixed Bed Reactor
oleh: Asif Hussain Khoja, Ahad Hussain Javed, Salman Raza Naqvi, Sehar Shakir, Israf Ud Din, Zafar Arshad, Umer Rashid, Umair Yaqub Qazi, Nida Naeem
Format: | Article |
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Diterbitkan: | MDPI AG 2022-09-01 |
Deskripsi
Syngas is a valuable entity for downstream liquid fuel production and chemical industries. The efficient production of syngas via catalytic partial oxidation of methane (CPOM) is an important process. In this study, partial oxidation of methane (POM) was carried out using CaO decorated TiO<sub>2</sub> catalysts. The catalysts were synthesized employing the sol-gel method, while the decoration of TiO<sub>2</sub> with CaO was achieved in an aqueous solution by wetness impregnation method. The prepared catalysts were characterized by employing XRD, Raman, TG-DTG, and SEM-EDX for structural and morphological analysis. On testing for POM, at 750 °C the catalysts demonstrate excellent CH<sub>4</sub> conversion of 83.6 and 79.5% for 2% and 3% CaO loaded TiO<sub>2</sub>, respectively. While the average H<sub>2</sub>/CO ratio for both 2% and 3% CaO loaded TiO<sub>2</sub>, 2.25 and 2.28, respectively, remained slightly above the theoretical value (H<sub>2</sub>/CO = 2.0) of POM. The improved POM performance is attributed to the optimally loaded CaO on the TiO<sub>2</sub> surface that promotes the reaction where TiO<sub>2</sub> support ensure less agglomerated particles, resulting into a fine distribution of the active catalytic sites.