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Open AccessArticle

Preparation of a Pd/Al2O3 Catalyst with Microwave-Induced Plasma Jet Irradiation under Atmospheric Pressure

Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan
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Nanomaterials 2019, 9(12), 1734; https://doi.org/10.3390/nano9121734
Received: 18 October 2019 / Revised: 23 November 2019 / Accepted: 2 December 2019 / Published: 5 December 2019
(This article belongs to the Special Issue Nanocatalysts in Chemistry: Synthesis and Applications)
Microwave-induced plasma under atmospheric pressure is an effective technique for catalyst preparation. A Pd/Al2O3 catalyst was prepared using a fixed bed with microwave plasma irradiation. The activity of the catalyst was compared with that of catalysts made using the plasma spouted bed and the conventional furnace. From the results of X-ray powder diffraction (XRD) spectra and transmission electron microscopy (TEM) images, plasma treatment induced a rapid reduction process (PdO→Pd). Moreover, the plasma treatment derived the growth of a different facet from Pd (111) to Pd (100). A different kind of phase transition behavior was observed with plasma-treated alumina. H2 chemisorption analysis confirmed that the plasma treatment had a positive effect on the dispersion of Pd metal on the support. These improvements to the properties of the catalyst resulted in excellent performance in hydrogenation of acetylene. View Full-Text
Keywords: microwave-induced plasma; Pd/Al2O3 catalyst; acetylene hydrogenation microwave-induced plasma; Pd/Al2O3 catalyst; acetylene hydrogenation
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Chung, J.Y.; Kodama, S.; Sekiguchi, H. Preparation of a Pd/Al2O3 Catalyst with Microwave-Induced Plasma Jet Irradiation under Atmospheric Pressure. Nanomaterials 2019, 9, 1734.

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