Coating of Pd/C catalysts with Lewis-acidic ionic liquids and liquid coordination complexes -- SCILL induced activity enhancement in arene hydrogenation

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Details zur Publikation

Autorinnen und Autoren: Lijewski M, Hogg JM, Swadzba-Kwasny M, Wasserscheid P, Haumann M
Zeitschrift: RSC Advances
Jahr der Veröffentlichung: 2017
Band: 7
Heftnummer: 44
Seitenbereich: 27558-27563
ISSN: 2046-2069


Abstract

New solid catalysts with ionic liquid layer (SCILLs) were prepared by the coating of heterogeneous Pd/C catalysts with a thin film of acidic liquid: a known chloroaluminate ionic liquid (IL), [BMIM]Cl/AlCl3, and a recently developed liquid coordination complex (LCC), urea/AlCl3. Both coatings improved the activity of Pd/C catalyst against toluene hydrogenation; at lower temperatures (40 °C) the IL-SCILL performed better, whereas at 80 °C the LCC-SCILL gave higher conversion. A thin film of ionic liquid proved to be sufficient to increase activity, while larger volumes of ionic liquid resulted in a decrease in activity due to pore blocking and hence mass transport limitations. Kinetic investigations in batch mode revealed a zero order with respect to toluene concentration, a first order in hydrogen pressure, and activation energy of 64.7 kJ mol$-$1 for the Pd/C catalyst. The SCILL catalysts had slightly lower values of 53.1 kJ mol$-$1 for [BMIM]Cl/AlCl3 and 61.4 kJ mol$-$1 for urea/AlCl3, respectively.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Haumann, Marco PD Dr.
Lehrstuhl für Chemische Reaktionstechnik
Lijewski, Martin
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Einrichtungen weiterer Autorinnen und Autoren

Queen's University


Forschungsbereiche

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Lijewski, M., Hogg, J.M., Swadzba-Kwasny, M., Wasserscheid, P., & Haumann, M. (2017). Coating of Pd/C catalysts with Lewis-acidic ionic liquids and liquid coordination complexes -- SCILL induced activity enhancement in arene hydrogenation. RSC Advances, 7(44), 27558-27563. https://dx.doi.org/10.1039/C7RA03295A

MLA:
Lijewski, Martin, et al. "Coating of Pd/C catalysts with Lewis-acidic ionic liquids and liquid coordination complexes -- SCILL induced activity enhancement in arene hydrogenation." RSC Advances 7.44 (2017): 27558-27563.

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Zuletzt aktualisiert 2019-16-03 um 10:10