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›› 2011, Vol. 11 ›› Issue (3): 497-502.

• 材料工程专栏 • 上一篇    下一篇

流化床甲醇合成催化剂的制备及其性能

汪国高 左宜赞 韩明汉 王金福   

  1. 清华大学化工系 清华大学化工系 清华大学化工系 清华大学化工系
  • 收稿日期:2011-03-01 修回日期:2011-04-19 出版日期:2011-06-20 发布日期:2011-06-20
  • 通讯作者: 汪国高

Preparation of Cu-based Catalysts for Methanol Synthesis in a Fluidized Bed Reactor and Their Performance

WANG Guo-gao ZUO Yi-zan HAN Ming-han WANG Jin-fu   

  1. Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University
  • Received:2011-03-01 Revised:2011-04-19 Online:2011-06-20 Published:2011-06-20
  • Contact: WANG Guo-gao

摘要: 采用碳酸钠共沉淀法制备了5种不同组成的铜基甲醇合成催化剂,并对其进行了活性评价和形貌及抗磨损性能表征. 结果表明,氧化锆可使催化剂的耐磨损强度显著提高,磨损指数(AJI)可达0.056;催化剂的活性和稳定性较好,CO转化率约40%,260℃高温下长达50 h基本不失活. 氧化铝与铜锌发生复合使催化剂的活性显著下降,CO转化率仅有10%,对催化剂的强度提高作用不明显,AJI值达0.103. 组成为铜锌锆的催化剂较适用于流化床中甲醇的合成.

关键词: 氧化锆, 氧化铝, 流化床, 甲醇合成, 铜基催化剂

Abstract: Five Cu-based catalysts were prepared by sodium carbonate coprecipitation with different promoter contents. These catalysts were evaluated and characterized by SEM, XRD, particle size distribution and attrition jet index (AJI). It was found that the incorporation of ZrO2 gave the catalyst higher attrition resistance AJI value reached 0.056, the catalyst showed relative good activity and stability, CO conversion rate was about 40% and no remarkable deactivation was seen after 260℃ reaction for 50 h. Al2O3 drastically decreased catalytic activity by reacting with copper and zinc compounds in catalyst, CO conversion rate was only 10%, the enhancement of attrition resistance was much less, with an AJI value 0.103. The catalyst with Cu, Zn, Zr as main components was suitable for methanol synthesis in a fluidized bed reactor due to its high activity, long time stability and good attrition resistance.

Key words: ZrO2, Al2O3, fluidized bed, methanol synthesis, Cu-based catalyst

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