SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (3): 389-393.

• SPECIAL ISSUE OF THE FIRST INTERNATIONAL SYMPOSIUM ON SUSTAINABLE CHEMICAL PRODUCT AND PROCESS ENGINEERING • Previous Articles     Next Articles

Effect of Preparation Methods on Activation of Catalysts BaNi0.2Mn0.8Al11O19-δ for Dimethyl Ether Combustion

YU Qian1, YU Lin1, WANG Yuanna1, ZHANG Qini1, SUN Ming1, HUANG Yingmin1, LU Yeyu1, GE Zaochuan2   

  1. 1. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;
    2. Shenzhen Specialized Functional Material Laboratory, Shenzhen University, Shenzhen 518060, China
  • Received:2007-10-01 Revised:2008-03-25 Online:2008-06-28 Published:2008-06-28
  • Supported by:
    Project of Science and Technology of Guangdong Province (2004B33401003,2005B10201053);the Natural Science Foundation of Guangdong Province (04205301,06021468);the Special Functional Material Foundation of Shenzhen University (0602)

Effect of Preparation Methods on Activation of Catalysts BaNi0.2Mn0.8Al11O19-δ for Dimethyl Ether Combustion

余倩1, 余林1, 王苑娜1, 张绮旎1, 孙明1, 黄应敏1, 卢业玉1, 戈早川2   

  1. 1. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China;
    2. Shenzhen Specialized Functional Material Laboratory, Shenzhen University, Shenzhen 518060, China
  • 通讯作者: YU Lin,E-mail:yuqgdut@126.com
  • 基金资助:
    Project of Science and Technology of Guangdong Province (2004B33401003,2005B10201053);the Natural Science Foundation of Guangdong Province (04205301,06021468);the Special Functional Material Foundation of Shenzhen University (0602)

Abstract: Catalytic combustion of dimethyl ether(DME)over hexaaluminate catalyst BaNi0.2Mn0.8Al11O19-δ has been investigated.The catalysts were prepared with the sol-gel method and reverse microemulsion method respectively and characterized by thermogravimetry-differential thermal analysis,X-ray diffraction and transimission electron microscope.It was found that the formation of Mn,Ni modified hexaaluminate was a relatively slow process via two solid state reactions and spinel structure was a transition phase.At the same calcined temperature and time,the catalyst prepared with the reverse microemulsion method could form the hexaaluminate phase more easily than that prepared with the sol-gel method.The catalyst BaNi0.2Mn0.8Al11O19-δ prepared with the reverse micro-emulsion method appeared a plate-like morphology,while it appeared a needle-like morphology when using the sol-gel method.The catalytic activities of catalysts BaNi0.2Mn0.8Al11O19-δ prepared with two different methods for DME combustion were tested.It showed that catalyst prepared with the reverse microemulsion method had better catalytic activity,i.e.T10% of DME had decreased by 45℃,about 90% conversion of diemthyl ether at 380℃.

Key words: dimethyl ether, hexaaluminate catalyst, reverse microemulsion, catalytic combustion

摘要: Catalytic combustion of dimethyl ether(DME)over hexaaluminate catalyst BaNi0.2Mn0.8Al11O19-δ has been investigated.The catalysts were prepared with the sol-gel method and reverse microemulsion method respectively and characterized by thermogravimetry-differential thermal analysis,X-ray diffraction and transimission electron microscope.It was found that the formation of Mn,Ni modified hexaaluminate was a relatively slow process via two solid state reactions and spinel structure was a transition phase.At the same calcined temperature and time,the catalyst prepared with the reverse microemulsion method could form the hexaaluminate phase more easily than that prepared with the sol-gel method.The catalyst BaNi0.2Mn0.8Al11O19-δ prepared with the reverse micro-emulsion method appeared a plate-like morphology,while it appeared a needle-like morphology when using the sol-gel method.The catalytic activities of catalysts BaNi0.2Mn0.8Al11O19-δ prepared with two different methods for DME combustion were tested.It showed that catalyst prepared with the reverse microemulsion method had better catalytic activity,i.e.T10% of DME had decreased by 45℃,about 90% conversion of diemthyl ether at 380℃.

关键词: dimethyl ether, hexaaluminate catalyst, reverse microemulsion, catalytic combustion