A DFT+U study of the catalytic degradation of 1,2-dichloroethane over CeO2

Literature Information

Publication Date 2018-01-22
DOI 10.1039/C7CP08322J
Impact Factor 3.676
Authors

Guanzhong Lu


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Abstract

The catalytic degradation of 1,2-dichloroethane (DCE) at CeO2(111) was investigated using periodic density functional theory calculations corrected by on-site Coulomb interactions. From thorough calculations of possible elementary steps, we are able to identify the lowest energy reaction pathway for the catalytic oxidation of DCE at CeO2(111). It proceeds via two successive C–Cl bond breaking processes to form adsorbed CH2CH2 species, and after further dehydrogenation and C–C bond scission, the surface species are finally oxidized to CO2 and H2O. The surface oxygen vacancies were found to be important for the catalytic decomposition of DCE, by providing the adsorption sites, as well as for charge transfer to favor C–Cl bond breaking. We are also able to illustrate the effect of H2O on the catalytic activity of CeO2(111) for DCE oxidation.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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