Ⅰ.2H2(g)+CO(g) CH3OH(g) ΔH1=-90.8kJ∙mol-1
Ⅱ.2CH3OH(g) CH3OCH3(g)+H2O(g) ΔH2=-23.5kJ∙mol-1
Ⅲ.CO(g) +H2O(g) CO2(g)+H2(g) ΔH3=-41.3kJ∙mol-1