东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (2): 251-253.DOI: -

• 论著 • 上一篇    下一篇

直接合成二甲醚催化剂Cu-Zn-Al-Fe/HZSM-5的研究

王明华;王凤栾;黎潮;翟玉春;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-01-17
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(51074205)

Cu-Zn-Al-Fe/HZSM-5 catalyst for direct synthesis of dimethyl ether

Wang, Ming-Hua (1); Wang, Feng-Luan (1); Li, Chao (1); Zhai, Yu-Chun (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-01-17
  • Contact: Wang, M.-H.
  • About author:-
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摘要： 采用水热法合成Cu-Zn-Al-Fe催化剂,使用HZSM-5作载体,考察了硝酸盐溶液浓度、老化温度、Fe含量对催化剂的影响.对制备的催化剂进行了SEM,BET,FT-IR和XRD检测.在4MPa,260℃,H2和CO2体积分数比为3的条件下,由二氧化碳加氢直接合成二甲醚(DME).结果表明:硝酸盐质量分数为10%,老化温度为150℃时制备的催化剂粒径最小,约500 nm,比表面积达200.6m2/g.在Fe的质量分数为5%时CO2的转化率达41.4%,DME的选择性达45.2%.

关键词: CO2加氢, 二甲醚, Cu-Zn-Al-Fe/HZSM-5, 水热法, 转化率

Abstract: Cu-Zn-Al-Fe catalyst was prepared by the hydrothermal method, using HZSM-5 as a support. The influence of nitrate content, aging temperature and Fe content on the catalyst was investigated. SEM, BET, FT-IR and XRD were applied to the characterization of the catalyst. Dimethyl ether (DME) was synthesized by feeding CO2 and H2 into a reactor under the pressure of 4 MPa, the temperature of 260°C and the H2/CO2 ratio (volume fraction) of 3. The results showed that when the mass fraction of nitrate is 10% and the aging temperature is 150°C, the particle size of the catalyst is the minimum (about 500 nm) and the specific surface area is 200.6 m2/g. During synthesizing DME, the catalyst with 5%Fe shows the best effect, with CO2 conversion ratio of 41.4% and DME selectivity of 45.2% obtained.

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