화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.26, 243-250, June, 2015
DOI10.1016/j.jiec.2014.12.001  Export Citation
The facile preparation of Cu-Zn-Al oxide composite catalysts with high stability and performance for the production of dimethyl ether using modified aluminum alkoxide
Peng Wang1, 2, Wei Huang1, 3, †, GuangZhi Zhang1, 3, ZhiHua Gao1, 3, Yu Tang1, 3, Kai Sun1, 3, and XiaoYu Zhang1, 3
  • 1Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
  • 2State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
  • 3, China
E-mail:
Modified aluminum alkoxide prepared by alcoholysis was used as an aluminum source in the complete liquid-phase technology for the preparation of slurry catalysts. The use of the modified aluminum alkoxide afforded control over the rate of the hydrolysis/condensation reactions during the preparation of the catalyst precursors, thereby generating catalysts with a fine nano-structured active metal and metallic oxide particles. Four types of Cu?Zn?Al (molar ratio is 2:1:4) catalysts were prepared using different procedures. These catalysts were tested for CO hydrogenation at 553 K, 4.0 MPa and H2/CO = 1.0 in a kettle with a mechanical agitator. The results indicated that the activity of the catalysts was greatly dependent on the rate of the hydrolysis/condensation reactions, and the catalyst with the best catalytic performance was obtained by controlling the hydrolysis/alcoholysis rate during catalyst synthesis by pre-alcoholysis of AIP as the aluminum source, over which the CO conversion and dimethyl ether selectivity could reach 62.6% and 62.5%, respectively.
Keywords:Dimethyl ether;Syngas;Cu-based catalyst;Complete liquid-phase technology;Slurry reactor
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