Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10244545 | Journal of Catalysis | 2005 | 11 Pages |
Abstract
A two-dimensional microporous dinuclear copper(II) trans-1,4-cyclohexanedicarboxylate, [CuII,II2(OOCC6H10COO)2]Â â
 H2O (1), can act as a heterogeneous catalyst for selective oxidations of various alcohols with hydrogen peroxide. Complex 1 catalyzed the selective oxidations of 2-propanol, cyclohexanol, benzyl alcohol, 2-octanol, and 1-octanol with >99% selectivities in a heterogeneous system. A green-colored active intermediate, H2[CuII,II2(OOCC6H10COO)2(O2)] â
 H2O (2), observed in the reaction of 1 with a 20-fold excess H2O2 in acetonitrile was characterized by elemental analysis, TG/DTA, magnetic susceptibility, FT-IR, diffuse reflectance UV-vis, EPR, X-ray powder diffraction (XRPD), resonance Raman spectra, BET surface area, pore size distribution, and nitrogen occlusion measurements. The molecular structure of 2 was determined from XRPD data and refined by the Rietveld method. The microporous structure of 2 was constructed by intramolecular bridging of μ-1,2-trans CuOOCu species between two-dimensional [Cu2(O2CC6H10CO2)] layers. The complex 2 was the first example of the microporous copper(II) peroxo complex for heterogeneous oxidation catalysis.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Chika Nozaki Kato, Mari Hasegawa, Tomohiko Sato, Akira Yoshizawa, Tomonori Inoue, Wasuke Mori,