By extended X-ray absorption fine structural (EXAFS) spectroscopy, copper oxide clusters with a square-plane structure are found in the channels of mesoporous molecular sieve MCM-41. Bond distances of Cu-O and Cu-Cu are 1.90 and 2.80 Å, respectively. Oxidation of naphthalene at 723 K for 4 h in MCM-41 leads to structural perturbation of the clusters (e.g., Cu-O: -0.02 Å and Cu-Cu: +0.02 Å) with little change in their coordination numbers.
|Number of pages||4|
|Journal||Radiation Physics and Chemistry|
|Issue number||11 SPEC. ISS.|
|Publication status||Published - 2006 Nov|
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