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

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

Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-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. 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

收稿日期:2007-10-01 修回日期:2008-03-25 出版日期:2008-06-28 发布日期:2008-06-28
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)

Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-δ for Dimethyl Ether Combustion

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

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)

摘要/Abstract

摘要： Catalytic combustion of dimethyl ether(DME)over hexaaluminate catalyst BaNi_0.2Mn_0.8Al₁₁O_19-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 BaNi_0.2Mn_0.8Al₁₁O_19-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 BaNi_0.2Mn_0.8Al₁₁O_19-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.T_10% 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

Abstract: Catalytic combustion of dimethyl ether(DME)over hexaaluminate catalyst BaNi_0.2Mn_0.8Al₁₁O_19-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 BaNi_0.2Mn_0.8Al₁₁O_19-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 BaNi_0.2Mn_0.8Al₁₁O_19-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.T_10% of DME had decreased by 45℃,about 90% conversion of diemthyl ether at 380℃.

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

余倩, 余林, 王苑娜, 张绮旎, 孙明, 黄应敏, 卢业玉, 戈早川. Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-δ for Dimethyl Ether Combustion[J]. , 2008, 16(3): 389-393.

YU Qian, YU Lin, WANG Yuanna, ZHANG Qini, SUN Ming, HUANG Yingmin, LU Yeyu, GE Zaochuan. Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-δ for Dimethyl Ether Combustion[J]. , 2008, 16(3): 389-393.

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Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-δ for Dimethyl Ether Combustion

Effect of Preparation Methods on Activation of Catalysts BaNi_0.2Mn_0.8Al₁₁O_19-δ for Dimethyl Ether Combustion

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