Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media
Publication type: Journal Article
Publication date: 2011-03-01
scimago Q1
wos Q1
SJR: 5.180
CiteScore: 38.4
Impact factor: 21.1
ISSN: 09263373, 18733883
Catalysis
Process Chemistry and Technology
General Environmental Science
Abstract
Hydrodechlorination of 4-chlorophenol using Pd/A2O3 as catalyst at mild conditions (30 °C, 1 atm) was carried out in plain water, buffered (CH3COOH/NaCH3COO, NaH2PO4/Na2HPO4 and NaHCO3/Na2CO3) and alkaline NaOH media at different pH. The highest reaction rate was achieved when the process was carried out at alkaline NaOH solution of pH = 8.5. Continuous long term experiments (τ: 5.4 kgcat h/mol) were performed in plain water and alkaline medium using Pd/Al2O3 and Pd/AC as catalysts. The former showed an appreciable loss of activity upon time on stream, which was associated with the formation of palladium chloride complexes. However, a residual activity remained practically stable, reaching very similar 4-chlorophenol conversion (36%) in both reaction media. The Pd/AC catalyst maintained a constant activity at a 70% 4-chlorophenol conversion once the steady state was reached. This suggests that the AC supported catalyst is less susceptible to the chloride poisoning produced during the reaction.
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De Pedro Z. M. et al. Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media // Applied Catalysis B: Environmental. 2011. Vol. 103. No. 1-2. pp. 128-135.
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De Pedro Z. M., Díaz E., Mohedano A., Casas J., Rodriguez J. Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media // Applied Catalysis B: Environmental. 2011. Vol. 103. No. 1-2. pp. 128-135.
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TY - JOUR
DO - 10.1016/j.apcatb.2011.01.018
UR - https://doi.org/10.1016/j.apcatb.2011.01.018
TI - Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media
T2 - Applied Catalysis B: Environmental
AU - De Pedro, Zahara M
AU - Díaz, Elena
AU - Mohedano, A.F.
AU - Casas, Jose.A.
AU - Rodriguez, Juan
PY - 2011
DA - 2011/03/01
PB - Elsevier
SP - 128-135
IS - 1-2
VL - 103
SN - 0926-3373
SN - 1873-3883
ER -
Cite this
BibTex (up to 50 authors)
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@article{2011_De Pedro,
author = {Zahara M De Pedro and Elena Díaz and A.F. Mohedano and Jose.A. Casas and Juan Rodriguez},
title = {Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media},
journal = {Applied Catalysis B: Environmental},
year = {2011},
volume = {103},
publisher = {Elsevier},
month = {mar},
url = {https://doi.org/10.1016/j.apcatb.2011.01.018},
number = {1-2},
pages = {128--135},
doi = {10.1016/j.apcatb.2011.01.018}
}
Cite this
MLA
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De Pedro, Zahara M., et al. “Compared activity and stability of Pd/Al2O3 and Pd/AC catalysts in 4-chlorophenol hydrodechlorination in different pH media.” Applied Catalysis B: Environmental, vol. 103, no. 1-2, Mar. 2011, pp. 128-135. https://doi.org/10.1016/j.apcatb.2011.01.018.