Frontiers of Chemical Science and Engineering
>> 2008,
Volume 2,
Issue 2
doi:
10.1007/s11705-008-0036-x
Characterization and catalytic properties of
mesoporous CuO/SBA-16 prepared by different impregnation methods
Key Laboratory of Functional Materials, Education Office of Heilongjiang Province, School of Chemistry and Materials Science, Heilongjiang University;
Available online: 2008-06-05
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Abstract
CuO/SBA-16 catalysts were prepared by two different routes – the conventional impregnation method and the modified impregnation method with pH adjustment. These catalysts were characterized by X-ray diffraction (XRD), atomic absorption spectrometry (AAS), N physisorption and hydrogen temperature programmed reduction (H-TPR) measurements which reveal that the cubic cage-like () pore structure of the parent SBA-16 molecule sieves was well maintained throughout the synthesis. After introduction of Cu, a different CuO dispersion exists on these catalysts. The CuO/SBA-16 prepared by modified impregnation method has a single highly dispersed CuO which is considered as a highly efficient species for hydroxylation of phenol with HO. CuO/SBA-16 prepared by the conventional impregnation method shows the presence of bulk CuO species which is undesirable for this reaction.
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