Influence of precipitation and aging temperature on the performance of CuO/ZnO/Al<sub>2</sub>O<sub>3</sub> catalyst for methanol synthesis in slurry reactor

LI Zhong; ZHANG Xiao-bing; GUO Qi-hai; LIU Yan; ZHENG Hua-yan

Volume 40 Issue 05

May 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(05): 569-575

LI Zhong, ZHANG Xiao-bing, GUO Qi-hai, LIU Yan, ZHENG Hua-yan. Influence of precipitation and aging temperature on the performance of CuO/ZnO/Al2O3 catalyst for methanol synthesis in slurry reactor[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 569-575.

Citation:

LI Zhong, ZHANG Xiao-bing, GUO Qi-hai, LIU Yan, ZHENG Hua-yan. Influence of precipitation and aging temperature on the performance of CuO/ZnO/Al₂O₃ catalyst for methanol synthesis in slurry reactor[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 569-575.

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Influence of precipitation and aging temperature on the performance of CuO/ZnO/Al₂O₃ catalyst for methanol synthesis in slurry reactor

1.
Key Laboratory of Coal Science & Technology of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;
2.
Technical Centre, Taiyuan Coal Gasification (Group) Corporation, Taiyuan 030024, China

Funds: 国家重点基础研究发展规划(973计划,2012CB723105)。

Received Date: 2011-07-19
Rev Recd Date: 2011-10-26
Publish Date: 2012-05-31

Abstract

Abstract

The influence of the temperature of precipitation and aging on the performance of the CuO/ZnO/Al₂O₃ catalyst used for methanol synthesis was studied in a slurry reactor. The catalysts and precursors were characterized through XRD, BET, FT-IR and XPS. The results show that the phases of the precursors are mainly consisted of malachite (Cu₂(CO₃)(OH)₂) and zinc malachite ((Cu,Zn)₂(CO₃)(OH)₂), the crystallinity degree of the precursor that precipitated at 70 ℃ and aged at 80 ℃ is proper, and the performance of the catalyst from the precursor is optimal, with its CuO phase dispersing homogeneously, the electron binding energy of Cu element shifting the largest and the electron binding energy of Zn element shifting the minimum. Its space time yield and deactivation rate reach 153.3 g/(kg_cat·h) and 1.44%/d respectively.
- slurry reactor,
- CuO/ZnO/Al₂O₃ catalyst,
- stability,
- precipitation temperature,
- aging temperature

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References(24)

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