The Synthesis of Iron Oxides with Different Phases or Exposure Crystal Planes and Their Catalytic Property for Propene Oxidation

摘要：

Maghemite(γ-Fe2O3)and hematite(α-Fe2O3)nanoparticles with various dominant exposure crystal planes were prepared by several different methods.The structure and the reducibility of these materials were investigated by XRD,Raman and H2-TPR technologies,and their catalytic performance for propene oxidation was also discussed.The maghemite(γ-Fe2O3)showed a better reducibility than hematite(α-Fe2O3),but its activity for propene oxidation is relatively lower.The exposure crystal plane of hematite has a significant influence on its catalytic activity for propene oxidation.Among the prepared four samples,the hematite-1 sample showed the best activity.The selective growth of any planes with a relative low density of Fe atoms for the αFe2O3 catalyst would lead to an obvious decrease in the catalytic activity.

关键词： α-Fe2O3 γ-Fe2O3 Crystal planes Phase propene oxidation

作者: Kongzhai Li Masaaki Haneda Masakuni Ozawa

作者单位: Ceramics Research Laboratory,Nagoya Institute of Technology,10-6-29 Asahigaoka,Tajimi,Gifu 507-0071,Japan

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)

会议地点: 成都

会议语种:英文

页码: 189-193

在线出版日期: 2012-01-07（万方平台首次上网日期，不代表论文的发表时间）