Activated carbons containing TiO_(2): Characterization and influence of a preparation method on the state of TiO_(2) supported

摘要

In this study preparation procedure and characterization of coal-based activated carbons supporting TiO_(2) is presented. Decomposition of titanium organic complex introduced into three raw coals of a different composition is described and illustrated by XRD patterns taken at different stages of the preparations. Influence of a coal rank and titanium supported on coals on the development of a mesoporous structure is shown. Titanium revealed a positive influence on the formation of mesopores in activated carbons. Titanium contents were higher in those carbons activated for a longer time. Loss of some part of Ti supported was observed during preparation and the loss remained in a straight relation with the activation time. As confirmed by TEM, size of TiO_(2) particles supported on the activated carbons increased with the activation time. Distribution of the particles was irregular. Rutile was the only crystalline form of TiO_(2) found in Ti-loaded activated carbons.