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Abstract:
Cu(II)/MCM-41, Cu(I)/MCM-41 and Cu(0)/MCM-41 materials were prepared with Cu[OCHMeCH2NMe2](2)/MCM-41 as precursor under controlled conditions. The states of copper on the resulting samples were characterized by temperature programmed reduction (TPR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence spectroscopy (PL), infrared spectroscopy ( FTIR) of NO and CO adsorption, X-ray diffraction (XRD), and N-2 adsorption. It was shown that pure Cu(II)/MCM-41 can be acquired by calcining Cu[OCHMeCH2NMe2](2)/MCM-41 in pure oxygen at 573 K. Pure Cu(I)/MCM-41 can be obtained by reducing the as-prepared Cu(II)/MCM-41 in a CO/He atmosphere at 473 K, while pure Cu(0)/MCM-41 can be obtained via reduction of the Cu(II)/MCM-41 in a CO/He atmosphere at 673 K. The Cu(II)-O and Cu(I)-O species were showed to be highly dispersed on the surface of MCM-41 as isolated sites. The study provides an alternative method for the preparation of pure copper metal or copper oxide supported materials.
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NEW JOURNAL OF CHEMISTRY
ISSN: 1144-0546
Year: 2009
Issue: 10
Volume: 33
Page: 2044-2050
3 . 0 0 6
JCR@2009
2 . 7 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 33
SCOPUS Cited Count: 34
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: