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Cover Picture: Low‐Temperature CO Oxidation over Cu‐Based Metal–Organic Frameworks Monitored by using FTIR Spectroscopy (ChemCatChem 6/2012)
Author(s) -
Noei Heshmat,
Amirjalayer Saeed,
Müller Maike,
Zhang Xiaoning,
Schmid Rochus,
Muhler Martin,
Fischer Roland A.,
Wang Yuemin
Publication year - 2012
Publication title -
chemcatchem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201290016
Subject(s) - metal organic framework , adsorption , density functional theory , catalysis , fourier transform infrared spectroscopy , chemistry , molecule , infrared spectroscopy , spectroscopy , redox , yield (engineering) , metal , photochemistry , copper , inorganic chemistry , computational chemistry , materials science , chemical engineering , organic chemistry , physics , quantum mechanics , engineering , metallurgy
Low‐temperature CO Oxidation The cover picture shows the adsorption and oxidation of CO at Cu‐based metal‐organic frameworks (HKUST‐1 and MOF‐14). In their Communication on p. 755 ff., R. A. Fischer, Y. Wang et al. investigate the reaction mechanism of low‐temperature CO oxidation by using ultra‐high vacuum infrared spectroscopy (UHV‐FTIRS) combined with density functional theory (DFT) calculations. In their communication they provide direct spectroscopic evidence for the high catalytic activity of Cu‐based MOFs toward CO oxidation at 105 K. The high‐quality FTIRS data demonstrate that this reaction takes place on both intrinsic Cu 2+ CUS (coordinatively unsaturated sites) and minority Cu 2+ defect sites in the framework. A concerted mechanism was proposed, where the impinging O 2 molecule is activated in the presence of pre‐adsorbed CO and interacts simultaneously with two isocarbonyl species at neighboring CUS to yield two CO 2 molecules.