Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
63280 | Journal of Catalysis | 2006 | 9 Pages |
Abstract
Cryptomelane-type manganese oxides (OMS-2) were synthesized in the presence of microwave heating at different microwave frequencies and also using variable-frequency heating. The materials were prepared using a two-step hydrothermal procedure. Catalytic activity of the materials was tested for the oxidation of 2-thiophenemethanol. OMS-2 prepared at a high-frequency limit of 5.5 GHz showed the highest conversion (50%) to the 2-thiophenecarboxaldehyde among all of the tested OMS-2 samples. The OMS-2 precursor showed remarkable conversion (89%) in the oxidation reaction. In addition, the OMS-2 materials and the precursor showed differences in oxygen evolution based on the thermal decomposition experiments, as well as differences in porosity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Kinga A. Malinger, Yun-Shuang Ding, Shanthakumar Sithambaram, Laura Espinal, Sinue Gomez, Steven L. Suib,