Novel bimetallic 1%M-Fe/Al2O3-Cr2O3 (2:1) (M = Ru, Au, Pt, Pd) catalysts for Fischer-Tropsch synthesis

Mierczyński, Paweł, Dawid, Bartosz, Mierczynska-Vasilev, Agnieszka, Maniukiewicz, Waldemar, Witońska, Izabela, Vasilev, Krasimir, and Szynkowska-Jóźwik, Malgorzata I. (2022) Novel bimetallic 1%M-Fe/Al2O3-Cr2O3 (2:1) (M = Ru, Au, Pt, Pd) catalysts for Fischer-Tropsch synthesis. Catalysis Communications, 172. 106559.

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Abstract

The main objective of this work was to study the physicochemical and catalytic properties of bimetallic supported catalysts [1%M-Fe/Al2O3-Cr2O3 (2:1) (M = Ru, Au, Pt, Pd)] in Fischer-Tropsch synthesis. Furthermore, the study investigated the effect of noble metal addition to iron-supported catalysts on their physicochemical properties and reactivity. The physicochemical properties of the catalysts were studied using a range of characterization techniques such as X-ray diffraction (XRD), temperature-programmed reduction (TPR-H2), temperature-programmed desorption of ammonia (TPD-NH3) and BET (Brunauer – Emmett - Teller method). The activity tests were performed by Fischer-Tropsch synthesis in a high-pressure fixed-bed reactor using a gas mixture of H2 and CO with a molar ratio of 1:1. The correlation between the physicochemical properties of the investigated catalysts and their catalytic performance in CO hydrogenation was also investigated. The reactivity results showed that the most active system exhibited a high specific surface area, the highest total acidity and was the most reducible catalyst compared to the other catalysts tested. In addition, the Au–Fe system showed high selectivity towards liquid product formation during CO hydrogenation.

Item ID: 76988
Item Type: Article (Research - C1)
ISSN: 1873-3905
Keywords: Bimetallic catalysts, Binary oxide, Diesel production, Hydrogenation of CO, Iron catalyst, Syngas
Copyright Information: © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Date Deposited: 16 Mar 2023 03:44
FoR Codes: 34 CHEMICAL SCIENCES > 3406 Physical chemistry > 340601 Catalysis and mechanisms of reactions @ 100%
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