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Silver–Cobalt Oxides Derived from Silver Nanoparticles Deposited on Layered Double Hydroxides for Methane Combustion
Author(s) -
Zhao Shen,
Li Junhua
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500254
Subject(s) - layered double hydroxides , calcination , catalysis , nanosheet , methane , hydroxide , materials science , nanoparticle , cobalt , inorganic chemistry , chemical engineering , adsorption , coal , catalytic combustion , combustion , hydrotalcite , anaerobic oxidation of methane , nanomaterials , chemistry , nanotechnology , organic chemistry , engineering
Ag nanoparticles (Ag NPs) have been deposited successfully on CoAl‐layered double hydroxide (CoAl‐LDH) layers through a simple and facile self‐redox process to give Ag‐CoAl‐LDHs. Furthermore, the CoAl‐LDHs and the Ag‐CoAl‐LDHs are calcined in air at different temperatures (500, 600, and 700 °C) to give CoAlO‐X and Ag‐CoAlO‐X catalysts for methane combustion (X=500, 600, and 700). The catalytic and characterization results reveal that Ag‐CoAlO‐600 has the highest catalytic activity as it has the highest low‐temperature reducibility and the most abundant surface Co 3+ and surface adsorbed oxygen species. In addition, the Ag NP sizes on Ag‐CoAlO and the morphology changes of the CoAlO nanosheet supports affect the catalytic activity of methane combustion.