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Zirconium-doped lanthanum manganites for catalytic deep oxidation of propene
Applied Catalysis A: General Số 02-Jan, năm 2010 (Tập 385, trang 163-169)
ISSN: 0926860X
ISSN: 0926860X
DOI: 10.1016/j.apcata.2010.07.008
Tài liệu thuộc danh mục: Scopus
Article
English
Từ khóa: Catalyst activity; Catalytic oxidation; Cermets; Lanthanum; Manganites; Perovskite; Propylene; Titration; Zirconium; Activity measurements; Catalytic deep oxidation; Cell volume; Deep oxidation; Lanthanum manganites; Self propagating high temperature synthesis; Temperature programmed techniques; Zirconium doped; Temperature programmed desorption
Tóm tắt tiếng anh
Powders of lanthanum manganite partially substituted on the lanthanum site by strontium and on the manganese site by zirconium were obtained by self-propagating high-temperature synthesis. The catalysts were characterized by XRD, BET and temperature-programmed techniques. The insertion of zirconium in the structure was verified by Mn titration and cell volume calculations. The obtained specific surface areas were between 11 and 16 m2 g -1 depending on the composition. Catalytic activity measurements were performed for the deep oxidation of propene. The activity decreased when increasing the amount of zirconium. This was linked to the reinforcement of the oxygen bound on the catalyst as demonstrated by temperature-programmed desorption techniques. � 2010 Elsevier B.V.
