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Molecules 2016, 21(3), 394;

Preparation of Pd-Loaded Hierarchical FAU Membranes and Testing in Acetophenone Hydrogenation

Department of Environmental and Chemical Engineering, University of Calabria, cubo 44A, Via Pietro BUCCI, 87036 Rende (CS), Italy
National Research Council—Institute for Membrane Technology (ITM–CNR) c/o University of Calabria, cubo 17C, Via Pietro BUCCI, 87036 Rende (CS), Italy
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 9 February 2016 / Revised: 17 March 2016 / Accepted: 18 March 2016 / Published: 22 March 2016
(This article belongs to the Special Issue Membrane Catalysis)
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Pd-loaded hierarchical FAU (Pd-FAU) membranes, containing an intrinsic secondary non-zeolitic (meso)porosity, were prepared and tested in the catalytic transfer hydrogenation of acetophenone (AP) to produce phenylethanol (PE), an industrially relevant product. The best operating conditions were preliminarily identified by testing different solvents and organic hydrogen donors in a batch hydrogenation process where micron-sized FAU seeds were employed as catalyst support. Water as solvent and formic acid as hydrogen source resulted to be the best choice in terms of conversion for the catalytic hydrogenation of AP, providing the basis for the design of a green and sustainable process. The best experimental conditions were selected and applied to the Pd-loaded FAU membrane finding enhanced catalytic performance such as a five-fold higher productivity than with the unsupported Pd-FAU crystals (11.0 vs. 2.2 mgproduct gcat−1·h−1). The catalytic performance of the membrane on the alumina support was also tested in a tangential flow system obtaining a productivity higher than that of the batch system (22.0 vs. 11.0 mgproduct gcat−1·h−1). View Full-Text
Keywords: catalysis; ketone hydrogenation; zeolite membranes; secondary porosity; sustainable chemistry catalysis; ketone hydrogenation; zeolite membranes; secondary porosity; sustainable chemistry

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Molinari, R.; Lavorato, C.; Mastropietro, T.F.; Argurio, P.; Drioli, E.; Poerio, T. Preparation of Pd-Loaded Hierarchical FAU Membranes and Testing in Acetophenone Hydrogenation. Molecules 2016, 21, 394.

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