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MWNT/titania nanocomposites were prepared by an impregnation method and subsequent heat treatment at 400°C. Precursor compounds such as titanium (IV) propoxide and titanium (IV) ethoxide were used to cover the surface of CNTs under solution conditions. Electron microscopy and X-ray diffraction techniques were carried out to characterize the as-prepared titania layers.
Catalytic decomposition of acetylene was studied under reduced pressure in a batch reactor over catalyst samples, which previously showed outstanding activity and selectivity in carbon nanotube formation in a fixed-bed flow reactor under atmospheric pressure. It was found that activity depends on the nature of the catalyst sample at lower acetylene pressure. Characterization of the samples was carried...
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