Abstract: Influence of reaction temperature, pressure and space velocity on the direct synthesis of
dimethyl ether (DME) from syngas is studied in an isothermal fixed-bed reactor. The
catalyst is a physical mixture of C30 copper-based methanol (MeOH) synthesis catalyst and
ZSM-5 dehydration catalyst. The experimental results show that the chemical synergy between
methanol synthesis reaction and methanol dehydration reaction is evident. The conversion of
carbon monoxide is over 90%.

Key words: dimethyl ether, chemical synergy, methanol dehydration, syngas

摘要： Influence of reaction temperature, pressure and space velocity on the direct synthesis of
dimethyl ether (DME) from syngas is studied in an isothermal fixed-bed reactor. The
catalyst is a physical mixture of C30 copper-based methanol (MeOH) synthesis catalyst and
ZSM-5 dehydration catalyst. The experimental results show that the chemical synergy between
methanol synthesis reaction and methanol dehydration reaction is evident. The conversion of
carbon monoxide is over 90%.

关键词: 合成气;化工生产;二甲醚;反应过程;协同作用;甲醇脱水;化学合成