Please use this identifier to cite or link to this item:
Title: A promising catalyst for the dehydrogenation of perhydro-dibenzyltoluene: Pt/Al2 O3 prepared by supercritical CO2 deposition
Authors: Modisha, Phillimon
Garidzirai, Rudaviro
Güneş, Hande
Bozbağ, Selmi Erim
Rommel, Sarshad
Uzunlar, Erdal
Aindow, Mark
Erkey, Can
Bessarabov, Dmitri
Keywords: Dehydrogenation
Wet impregnation
Publisher: MDPI
Abstract: Pt/Al2 O3 catalysts prepared via supercritical deposition (SCD), with supercritical CO2, wet impregnation (WI) methods and a selected benchmark catalyst, were evaluated for the dehydrogenation of perhydro-dibenzyltoluene (H18-DBT) at 300◦ C in a batch reactor. After ten dehydrogenation runs, the average performance of the catalyst prepared using SCD was the highest compared to the benchmark and WI-prepared catalysts. The pre-treatment of the catalysts with the product (dibenzyltoluene) indicated that the deactivation observed is mainly due to the adsorbed H0-DBT blocking the active sites for the reactant (H18-DBT). Furthermore, the SCD method afforded a catalyst with a higher dispersion of smaller sized Pt particles, thus improving catalytic performance towards the dehydrogenation of H18-DBT. The particle diameters of the SCD-and WI-prepared catalysts varied in the ranges of 0.6–2.2 nm and 0.8–3.4 nm and had average particle sizes of 1.1 nm and 1.7 nm, respectively. Energy dispersive X-ray spectroscopy analysis of the catalysts after ten dehydrogenation runs revealed the presence of carbon. In this study, improved catalyst performance led to the production of more liquid-based by-products and carbon material compared to catalysts with low catalytic performance.
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
catalysts-12-00489.pdfArticle (Makale)3 MBAdobe PDFView/Open
Show full item record

CORE Recommender


checked on Jun 28, 2024


checked on Jun 29, 2024

Page view(s)

checked on Jul 1, 2024


checked on Jul 1, 2024

Google ScholarTM



Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.