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Although mechanisms for the methane formation in the carbon-hydrogen reaction (C + 2H2 → CH4) have been proposed from molecular modeling, there is still no compelling evidence about their kinetic feasibility. In this work, we provide evidence about mechanisms for the methane formation in the carbon-hydrogen reaction from a kinetic point of view. Kinetic parameters for all elementary steps were explored...
Methane is the main product in the reaction between molecular hydrogen and carbonaceous materials such as char, graphene and graphite. Although, pathways for the formation of methane in the carbon-hydrogen reaction have been proposed attending to experimental and molecular modeling results, there is not compelling evidence of the elementary character of the steps in such pathways. In this work we...
Graphene sheets can be regarded as base structure of many carbon nanostructures, and atomic arrangements and variations in the atomic structure have a drastic impact on their unique properties. Using a single/double layer graphene model structure, we present a strategy to “see” single carbon atoms in 3-D. In high-resolution transmission electron microscopy, exit-wave images are essential to obtain...
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