Polymer-based spherical activated carbon as catalytic support for hydrodechlorination reactions

Munoz M, Kolb V, Lamolda A, de Pedro ZM, Modrow A, Etzold BJ, Rodriguez JJ, Casas JA (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Applied Catalysis B-Environmental Elsevier

Book Volume: 218

Pages Range: 498-505

DOI: 10.1016/j.apcatb.2017.07.001

Abstract

In this work, polymer-based spherical activated carbon (PBSAC) (dp = 500 μm) has been used as support to synthesize several Pd/PBSAC (1% wt.) catalysts. These catalysts have been tested in the hydrodechlorination (HDC) of 4‐chlorophenol (4-CP) in aqueous phase under ambient-like conditions (30 °C, 1 atm) at [4-CP]0 = 3.9 mmol L−1; [catalyst]0 = 1 g L−1 and 50 N mL H2 min−1. A sequential calcination (200 °C, air atmosphere) − reduction (80 °C, H2 atmosphere) treatment was required to obtain active HDC catalysts with a convenient proportion of zero-valent and electrodefficient Pd species. This catalyst allowed to achieve complete conversion of 4-CP in 90 min reaction time, giving rise to phenol as main reaction product. An expanded kinetic model accounting for both consecutive reaction and sorption processes was used to successfully fit the experimental data. The values obtained for the effective rate constant of 4-CP disappearance (3.26–10.88 × 10−4 s−1) and apparent activation energy (31.6 kJ mol−1) were close to the previously reported for powdered supported Pd catalysts. Remarkably, the catalyst showed a high stability in long-term continuous application (100 h on stream).

Authors with CRIS profile

Veronika Kolb Professur für Katalytische Materialien Bastian Etzold

Involved external institutions

Universidad Autónoma de Madrid (UAM) ES Spain (ES) BLÜCHER GmbH DE Germany (DE) Technische Universität Darmstadt DE Germany (DE)

How to cite

APA:

Munoz, M., Kolb, V., Lamolda, A., de Pedro, Z.M., Modrow, A., Etzold, B.J.,... Casas, J.A. (2017). Polymer-based spherical activated carbon as catalytic support for hydrodechlorination reactions. Applied Catalysis B-Environmental, 218, 498-505. https://doi.org/10.1016/j.apcatb.2017.07.001

MLA:

Munoz, Macarena, et al. "Polymer-based spherical activated carbon as catalytic support for hydrodechlorination reactions." Applied Catalysis B-Environmental 218 (2017): 498-505.

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