Low-Temperature Synthesis of Ruddlesden-Popper Type Layered Perovskite LaxCa3-xMn2O7 for Methane Combustion

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > OSSO国家重点实验室

	Low-Temperature Synthesis of Ruddlesden-Popper Type Layered Perovskite LaxCa3-xMn2O7 for Methane Combustion
	Du XR(杜晓蕊)1,2 ; Zou GJ(邹国军)1 ; Wang XL(王晓来)1
刊名	Catalysis Surveys from Asia
	2015
卷号	19 期号:1 页码:17-24
关键词	Ruddlesden-Popper type layered perovskite LaxCa3-xMn2O7 Methane Catalytic combustion
ISSN号	1571-1013
通讯作者	邹国军 ; 王晓来
英文摘要	In comparison to the conventional high temperature (≥300 ℃) preparation conditions, a series of Ruddlesden–Popper (R–P) type layered perovskite La_xCa₃_-xMn₂O₇ (x = 0.8, 1.0, 1.2, 1.5, 2.0, 2.5, and 3.0) were synthesized at 700 ℃ by an improved method based on the strategy involving the ‘‘inductive effect of Cl’’. XRD results revealed the unitary R–P type layered perovskite structure in the samples of x = 0.8, 1.0, 1.2, and 3.0. While in the samples of x = 1.5, 2.0, and 2.5, the layered perovskite phase and lanthanum oxide phase coexisted, which resulted in their poor redox properties. XPS and H₂-TPR results demonstrated that the redox properties of La_xCa₃_-xMn₂O₇ were correlated with its structural integrity and purity and influenced by the x value. The sample of x = 1.2 gave the highest methane combustion activity with T₅₀ = 449 ℃, and the sample of x = 2.0 showed the lowest activity with T₅₀ = 538 ℃, which was in accordance with the XPS and H₂-TPR results. The specific surface areas of La_xCa₃_-xMn₂O₇ depended on the x value monotonically, and the sample of x = 0.8 presented the highest surface area value (33.59 m² g^-1).
学科主题	物理化学与绿色催化
收录类别	SCI
语种	英语
WOS记录号	WOS:000348976700002
公开日期	2015-03-03
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/7143]
专题	兰州化学物理研究所_OSSO国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Du XR,Zou GJ,Wang XL. Low-Temperature Synthesis of Ruddlesden-Popper Type Layered Perovskite LaxCa3-xMn2O7 for Methane Combustion[J]. Catalysis Surveys from Asia,2015,19(1):17-24.
APA	Du XR,Zou GJ,&Wang XL.(2015).Low-Temperature Synthesis of Ruddlesden-Popper Type Layered Perovskite LaxCa3-xMn2O7 for Methane Combustion.Catalysis Surveys from Asia,19(1),17-24.
MLA	Du XR,et al."Low-Temperature Synthesis of Ruddlesden-Popper Type Layered Perovskite LaxCa3-xMn2O7 for Methane Combustion".Catalysis Surveys from Asia 19.1(2015):17-24.