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Citation: JIA Ruokun, ZHAO Guangyu, LIN Songzhu, JIN Juncan. Preparation of CuO-ZnO/Al₂O₃ Catalysts by Azeotropic Distillation Method and Its Influence on the Catalytic Performance[J]. Chinese Journal of Applied Chemistry, ;2015, 32(5): 570-575. doi: 10.11944/j.issn.1000-0518.2015.05.140295 shu

Preparation of CuO-ZnO/Al₂O₃ Catalysts by Azeotropic Distillation Method and Its Influence on the Catalytic Performance

1.
College of Chemical Engineering, Northeast Dianli University, Jilin, Jilin 132012, China

Corresponding author: JIA Ruokun,
Received Date: 25 August 2014
Available Online: 7 January 2015

The CuO-ZnO/Al₂O₃ catalysts were successfully prepared using the coprecipitation-azeotropic distillation method using isobutyl alcohol as the azeotropic solvent.The catalysts were characterized by X-ray diffraction and thermogravimetry/differential thermal analysis and scanning electron microscopy.The results show that azeotropic distillation can effectively remove free water in the precursor sol to inhibit particle agglomeration and partial sintering caused by the heating process.At the same time combination of isobutanol and polyethylene glycol inhibits theOstwald ripening of particles to obtain uniform particle size distribution and excellent dispersion of CuO components in catalyst particles.Direct hydrogenation of CO₂ to methanol was carried out in a fixed bed flow reactor.The experiments show that the catalysts prepared by the azeotropic distillation have better catalytic performance and stability than those the direct drying method.
- azeotropic distillation method,
- CuO-ZnO/Al₂O₃catalysts,
- CO₂ hydrogenation,
- methanol synthesis
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通讯作者: 陈斌, bchen63@163.com

Preparation of CuO-ZnO/Al₂O₃ Catalysts by Azeotropic Distillation Method and Its Influence on the Catalytic Performance