The document provides information on a methanation catalyst and the aMDEA process for CO2 removal. The methanation catalyst is a solid consisting of nickel, nickel oxide, and alumina used to catalyze the conversion of carbon monoxide and hydrogen into methane and water. The aMDEA process uses a solvent containing 37% MDEA and 3% piperazine to efficiently absorb CO2 from synthesis gas with low energy consumption and corrosion. It produces very low CO2 slippage and is safer than other CO2 removal processes as it is non-corrosive and non-toxic.