Investigation of the Nox Storage Behavior and Sulfur-tolerance of the BaFeO3-x Perovskite Catalyst

摘要：

The BaFeO3-x perovskite catalysts were prepared by sol-gel method.For all of the catalyst,the optimized NOx storage capacity (NSC) was obtained at 400 ℃.The Ba-Fe-1 perovskite catalyst,containing mainly carbonate,spinel and perovskite phases,possessed large NSC.For the Ba-Fe-2 perovskite catalyst,only the perovskite phase and the small amount of the spinel phase were evidenced by XRD,and no carbonate existed.This catalyst had small NSC comparing with the Ba-Fe-1 perovskite catalyst.The results of the XRD and in situ DRIFT experiments demonstrate that the BaCO3 phase in the Ba-Fe-1 perovskite catalyst plays a key role to enhance the NOx storage ability,but it is more easily sulfated to the bulk BaSO4 during the sulfation.On the contrary,the Ba ions,which were located in the perovskite crystal lattice and surrounded by Fe ions,are hardly sulfated inducing the significantly improved sulfur-tolerance of the Ba-Fe-2 perovskite catalyst

关键词： Noble metal free:Perovskite:BaFeO3-x:NOx storage:Sulfur-tolerance:Iron

作者: Hui Xian Xingwen Zhang Xingang Li Lingyun Li Honghu Zou Ming Meng Noritatsu Tsubaki

作者单位: Tianjin Key Laboratory of Applied Catalysis Science and Technology,School of Chemical Engineering an Department of Applied Chemistry,School of Engineering,University of Toyama,Gofuku 3190,Toyama city,T

会议类型: 国际会议

会议名称: The 8th International Symposium on Gas Cleaning at High Temperatures(第八届国际高温气体净化技术研讨会 GCHT-8)

会议地点: 太原

会议语种:英文

页码: 357-369

在线出版日期: 2010-08-23（万方平台首次上网日期，不代表论文的发表时间）