Conversion of CO2 to Methane (CH4) using Ni-Al Based Catalyst and Mg as Promoter via Methanation Process

Abstract

The increase of CO2 gas in the atmosphere, which can cause climate change, is one of the reasons for converting it into value-added chemicals and renewable fuels. One way to reduce CO2 in the atmosphere is to capture and store CO2. The conversion of CO2 into chemical fuels can be a method to reduce the problem of global warming and provide alternative chemical fuels.The purpose of this research is to obtain methane gas through the CO2 methanation process. Methane gas is produced using nickel-alumina based catalyst and Mg as promoter. The CO2 methanation process is carried out in a 500ml Erlenymeyer flask with CO2 gas flowing from the CO2 tube as the raw material in the process. In this research, the amount of catalyst is adjusted by varying the ratio of Nickel-Alumina catalyst 1:1, 1:2, and 1:3, 2:1, 3:1. Analysis of the methane content was used a Multi Gas Detector Analyzer and for catalyst used X-Ray Diffractionmeter. It is obtained from the research result that the most optimum variation of the Nickel-Alumina catalyst ratio is at the ratio of 3:1. The CO2 conversion to CH4 from the methanation process by using 3:1 Nickel-Alumina ratio also has a significant percentage of 1.82% for the methane content and 0.2% for the CO2 content.