Premium
Fe,Pd Co‐Incorporated LaCoO 3 Perovskites: Modification of Thermal Stability and Catalytic Activity for Gasoline Vehicle Exhaust Purification
Author(s) -
Hu Lingjun,
Zhou Chen,
Wu Chunzheng,
Zhou Shenghu,
Wang Wei Guo,
Yin Hongfeng
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201403196
Subject(s) - catalysis , x ray photoelectron spectroscopy , chemistry , perovskite (structure) , thermal stability , powder diffraction , palladium , doping , transmission electron microscopy , nuclear chemistry , temperature programmed reduction , inorganic chemistry , chemical engineering , crystallography , materials science , nanotechnology , organic chemistry , optoelectronics , engineering
A series of LaCo 0.95– x Fe x Pd 0.05 O 3 ( x = 0, 0.1, 0.2, 0.3) perovskite‐type catalysts have been prepared by a modified sol–gel method. Their structures and physicochemical properties have been studied by powder X‐ray diffraction (PXRD), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), the Brunauer–Emmett–Teller (BET) isotherm technique, and temperature‐programmed reduction (TPR). Structural characterization showed that Fe had been successfully doped into the perovskite lattice and that Fe doping improves the stability of LaCo 0.95 Pd 0.05 O 3 . A study of the catalysts showed that aged samples maintain the perovskite structure. They all exhibited similar catalytic performance, which has been ascribed to the similar state of palladium at the surface of the catalysts. Of these as‐prepared catalysts, the Fe‐doped perovskites achieved better catalytic activities than LaCo 0.95 Pd 0.05 O 3 , and LaCo 0.65 Fe 0.3 Pd 0.05 O 3 showed the optimal catalytic performance for vehicle emission purification.