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Journal : Journal of Chemical Engineering Research Progress

Effect of Temperature and Pressure Variation on CO₂ Methanation Performance in a PFR Reactor Using Ni/Al₂O₃ Catalyst Dwi Azzahra, Mutiara Sahita; Arifa, Adinda Anandyta; Clara Sirait, Angelica Ruth; Nurqolbi, Saskia Syifa; Ayun, Silviyana Rahma Qurrota; Dinata, Yusup Abdillah
Journal of Chemical Engineering Research Progress 2026: Just Accepted Manuscript and Article In Press 2026
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20714

Abstract

This study investigates the effect of feed temperature and pressure on the performance of CO₂ methanation using simulation results from Aspen HYSYS. The analysis focuses on the variation of CO and CH₄ mole fractions in the product stream under temperature ranges of 350–500°C and pressure ranges of 100–300 kPa. The results show that temperature has a minimal effect on both CO and CH₄ compositions, with only slight fluctuations observed, indicating that the system operates equilibrium conditions. In contrast, pressure exhibits a more noticeable influence, where increasing pressure leads to a gradual decrease in CO mole fraction and a corresponding increase in CH₄ mole fraction. These findings are consistent with the exothermic nature of the methanation reaction and Le Chatelier’s principle, confirming that higher pressure favors methane formation. Overall, the study highlights that pressure is a more significant operating parameter than temperature in enhancing CO₂ conversion to CH₄ under the investigated conditions.