Journal
CATALYSIS TODAY
Volume 187, Issue 1, Pages 115-121Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2011.10.003
Keywords
Carbon catalyst; Chemical activation; Iron chloride; CWPO; Phenol; Stability
Funding
- Spanish Ministry of Science and Innovation (MICINN) [CTQ2008-03988/PPQ]
- Spanish MICINN for Juan de la Cierva post-doctoral grant
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Iron-on-activated carbon catalysts for CWPO have been prepared through FeCl3-activation of lignin isolated from alkaline-pulping black liquors. The purpose of the chemical activation with FeCl3 is twofold; (i) produce carbon catalysts with a well-developed porous structure and (ii) introduce stable iron in the carbon matrix that acts as active phase in CWPO processes avoiding, or substantially decreasing, the iron leaching at the reaction conditions. The carbon catalysts obtained are essentially microporous with a relatively low amount of iron (less than 1 wt%). The increase of the activation temperature up to 800 degrees C favors a more homogeneous iron distribution through the carbon particles. The carbons obtained show a fairly good catalytic activity but mainly a very high stability, with almost no iron leaching at the reaction conditions analyzed. (C) 2011 Elsevier B.V. All rights reserved.
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