Shiyue Li , Robert Pestman , A. Iulian Dugulan , Zhuowu Men , Peng Wang , Emiel J.M. Hensen
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引用次数: 0
Abstract
The removal of carbon deposits from carburized Fe-based Fischer–Tropsch catalysts is a critical aspect of their performance. In this study, a method is presented to remove carbon deposits from freshly prepared χ-Fe5C2. The method involves successive passivation and reduction steps, which do not affect the bulk structure of the χ-Fe5C2 catalyst. The passivation step transforms the carbonaceous deposits from a graphitic structure to a disordered oxygen-functionalized structure, facilitating its removal by a reduction step in hydrogen. This results in a higher initial activity of the catalyst and substantially shortens the induction period observed without such pretreatment. The findings underscore the possibility of improving catalytic performance of Fe-carbides by changing the structure and reactivity of carbonaceous deposits.
期刊介绍：
The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes.
The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods.
The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.
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