Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1021/es802726v
Title (Primary) Highly active Pd-on-magnetite nanocatalysts for aqueous phase hydrodechlorination reactions
Author Hildebrand, H.; Mackenzie, K. ORCID logo ; Kopinke, F.-D.
Source Titel Environmental Science & Technology
Year 2009
Department TUCHEM
Volume 43
Issue 9
Page From 3254
Page To 3259
Language englisch
Abstract Nanoscale catalyst particles are already in focus as excellent tools in catalytic processes and intensive research is currently optimizing their performance. As known from nanosized metal particles, nanocatalysts have the potential of very high reaction rates due to their high specific surface areas and low mass transfer restrictions. In this study, we generated extremely active palladium catalysts on the basis of colloidal magnetic carriers. The most active catalyst contains only traces of Pd (0.15 wt %) on nanomagnetite as carrier. Pd-on-magnetite was successfully tested in batch experiments for the hydrodechlorination (HDC) of the chlorohydrocarbons trichloroethene (TCE) and chlorobenzene. For the HDC of TCE, second-order rate coefficients of approximately 1.6 × 104 L g-1 min-1 were measured. Such high activities have never been described before for Pd-containing catalysts in aqueous phase HDC reactions. The ferrimagnetism of the carrier enables a separation of the nanocatalyst from the treated water by means of magnetic separation. This allows the catalyst to be reused several times, which is an important advantage compared to other nanoscale catalytic systems such as pure Pd or Pd-on-Au colloids.
Persistent UFZ Identifier
Hildebrand, H., Mackenzie, K., Kopinke, F.-D. (2009):
Highly active Pd-on-magnetite nanocatalysts for aqueous phase hydrodechlorination reactions
Environ. Sci. Technol. 43 (9), 3254 - 3259 10.1021/es802726v