[Zurück]

J. Lizarazu, O. Sanz, O. Amorrortu, N. Barrabés-Rabanal, G. Rupprechter, M. Montes:
"STUDY OF NI CLUSTERS ON Al2O3 FOR SABATIER REACTION";
in: "Vienna Young Scientists Symposium", Book-of-Abstracts.com / D.I. Krebs, Gumpoldskirchen, 2019, ISBN: 978-3-9504017-9-0, S. 110 - 111.

One of the most promising approaches in carbon capture and utilization is the Sabatier reaction,
leading to the removal of carbon dioxide pollution and at the same time converting it in energy. The
Sabatier reaction produces methane from carbon dioxide and hydrogen
(4H2 + CO2 → CH4 + 2H2O)[1]. Ni-based catalysts are the most widely investigated materials for
Sabatier reaction due to their high activity, high selectivity and low cost. The main drawback of Nibased
catalysts is carbon formation that is strongly influenced by temperature and operating
pressure [2]. Nickel particle size or nickel dispersion are frequently discussed as factors influencing
the CO/CH4 selectivity of CO2 hydrogenation. Nanosized metal clusters have demonstrated
exceptional properties and play an important role in many
catalytic applications.
In this work, we evaluated the influence of particle size in
the catalytic behavior of Ni/Al2O3 catalysts in the Sabatier
reaction. Four different preparation routes are explored,
from the conventional incipient wetness impregnation or
deposition-precipitation to the preparation of Ni
nanoclusters.