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Cover Feature: Spatially‐Resolved Insights Into Local Activity and Structure of Ni‐Based CO 2 Methanation Catalysts in Fixed‐Bed Reactors (ChemCatChem 13/2021)
Author(s) -
Serrer MarcAndré,
Stehle Matthias,
Schulte Mariam L.,
Besser Heino,
Pfleging Wilhelm,
Saraҫi Erisa,
Grunwaldt JanDierk
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202100806
Subject(s) - methanation , bimetallic strip , catalysis , selectivity , chemistry , chemical engineering , materials science , organic chemistry , engineering
The Cover Feature illustrates the gradients in structure and activity along a catalytic fixed‐bed reactor during CO 2 ‐methanation. In the focus of this study are Ni‐based catalysts. In their Full Paper, by combining spatial activity profiling and complementary structural X‐ray absorption spectroscopic studies, M.‐A. Serrer, M. Stehle et al. uncovered relationships between the course of the reaction including gas phase concentration and the structure of the catalysts. In case of a bimetallic Ni‐Fe‐catalyst, a strong correlation between Fe oxidation state and the amount of water in the gas atmosphere was found. An oxidation of Fe under formation of FeO x species is able to protect the active Ni 0 centers from oxidation and can offer an alternative CO 2 activation pathway. Compared to a conventional Ni‐based catalyst, this results in higher activity and selectivity. More information can be found in the Full Paper by M.‐A. Serrer, M. Stehle et al.