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Thermal Decomposition of Silver Oxide Monitored by Raman Spectroscopy: From AgO Units to Oxygen Atoms Chemisorbed on the Silver Surface
Author(s) -
Pettinger Bruno,
Bao Xinhe,
Wilcock Ian,
Muhler Martin,
Schlögl Robert,
Ertl Gerhard
Publication year - 1994
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199400851
Subject(s) - raman spectroscopy , formaldehyde , oxide , metal , catalysis , oxygen , methanol , decomposition , inorganic chemistry , thermal decomposition , chemistry , silver oxide , chemisorption , spectroscopy , atmosphere (unit) , analytical chemistry (journal) , materials science , organic chemistry , physics , quantum mechanics , optics , thermodynamics
When Ag 7 O 8 NO 3 is heated in an O 2 ‐free atmosphere between 300 and 930 K, its AgO units (300–480 K) are transformed into Ag 2 O units (480–580 K) and ultimately into metallic Ag. A strongly chemisorbed O γ species is found on the Ag surface at temperatures between 580 and 900 K which participates in the catalytic oxidation of methanol to give formaldehyde. The various O species were characterized by Raman spectroscopy.