Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Konversi
Muhammad Fikri
Politeknik Negeri Sriwijaya
Education

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Conversion of CO₂ to methane in the methanation process using Ni/Al₂O₃ catalyst Muhammad Fikri; Erika Dwi Oktaviani; Didiek Hari Nugroho
Konversi Vol 15, No 2 (2026): OCTOBER 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v15i2.27345

Abstract

Carbon dioxide (CO₂) is a major greenhouse gas, with global emissions reaching 37.8 billion tons in 2024. CO₂ methanation via the Sabatier reaction offers a promising route for converting CO₂ into methane (CH₄) as a synthetic fuel. This study investigates the effect of reactor temperature (180–300°C) and operating time (60–180 minutes) on CO₂ conversion using a Ni/Al₂O₃ catalyst with a Zn promoter in a fixed-bed reactor integrated with a NaOH absorption unit. The novelty lies in the dual integration of NaOH, which is fed directly into the reactor and circulated to the post-reactor absorber, combined with a tray system for uniform gas distribution. Catalyst activation was performed using 4 M NaOH at 110°C for 2 hours, followed by calcination at 600°C. The process was conducted at 1 bar with a CO₂ flow rate of 0.05 L/min. Results showed that 260°C provided the best conversion, while 300°C decreased conversion due to equilibrium shifting toward reactants and excessive Zn consumption. An operating time of 120 minutes was optimal, while longer times reduced conversion due to limited Zn reductant. The optimal condition was achieved at 260°C and 120 minutes, yielding the highest CO₂ conversion of 65.59%, with a CH₄ concentration of 63.22% and residual CO₂ of 34.41%.
Co-Authors Didiek Hari Nugroho Erika Dwi Oktaviani