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Table 6 Key reactions for DME synthesis from syngas

From: The bioliq® bioslurry gasification process for the production of biosynfuels, organic chemicals, and energy

Reaction

Reaction equation

ΔrH

(kJ/mol)

ΔrG

(kJ/mol)

1. CH3OH synthesis

2 CO + 4 H2 2 CH3OHgas

-182

-58

2. CH3OH dehydratization

2 (CH3OH)gas DME + (H2O)gas

-24

-4

3. CO-shift reaction

CO + (H2O)gas H2 + CO2

-41

-29

4. DME synthesis

3 CO + 3 H2 DME + CO2

-247

-91

  1. DME, dimethyl ether; ΔrH, reaction enthalpy; ΔrG, Gibbs free energy.