炭酸ガスの接触水素化によるメタノール合成に関する研究

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  • Methanol Synthesis by Catalytic Hydrogenation of Carbon Dioxide on CuO-ZnO-Al2O3 Catalysts.
  • タンサン ガス ノ セッショク スイソカ ニ ヨル メタノール ゴウセイ ニカ

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Methanol synthesis by catalytic hydrogenation of carbon dioxide is one of the most promising processes for conversion of carbon dioxide to valuable chemicals. The activities and durabilities of CuO-ZnO-Al2O3 catalysts for methanol synthesis were investigated using a microreactor and a bench-scale test plant. It was found that catalysts containing 5 wt% Al2O3 showed better durability than a catalyst containing 8 wt% Al2O3. It was supposed that the high durability was due to the high dispersion and the sintering suppression of active sites by XRD, TEM and CO adsorption measurements. Test results obtained in the bench-scale test plant showed that the conversion of carbon dioxide to methanol was over 90% at a pressure of 8 MPa, a temperature of 512 K and a recycling ratio of 4 m3N/m3N by recycling unconverted reactant.

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