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Thermodynamic Analysis for Direct Synthesis of Dimethyl Ether from CO and/or CO_2 Hydrogenation
Tiefeng Wang
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Abstract
Thermodynamic analysis was carried out for the reaction system of dimethyl ether synthesis by CO and/or CO2 hydrogenation.The equilibrium yields of dimethyl ether were calculated for different initial feed gas compositions,temperature and pressure.The results showed that the equilibrium yield of dimethyl ether decreased with the increase of temperature,and increased with the increase of pressure or CO/(CO+CO2) molar ratio.The thermodynamic data for methanol synthesis by CO/CO2 mixed gas hydrogenation were also calculated out for comparison.