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- W2058869761 abstract "Deactivation mechanisms of copper chromite (CuCr2O4⋅CuO) catalyst for vapor-phase selective hydrogenation for furfuryl alcohol have been investigated using ex situ and in situ X-ray absorption fine structure (XAFS), X-ray photon spectroscopy (XPS), and Auger Electron Spectroscopy (AES). At 200 °C, the catalyst steadily deactivated. One of the dominant origins of catalyst deactivation is poisoning due to strong adsorption of polymeric species formed from the reactant and/or products. Metallic Cu is identified as the active site, while loss of active Cu(I) sites due to hydrogenation is not a deactivation cause, as opposed to previous literature reported. The copper chromite catalyst showed low activity at 300 °C process temperature. Under this condition, the Cu particle size does not change, but Cr/Cu ratio increases by 50%, suggesting that Cr coverage of Cu sites becomes an additional cause of catalyst deactivation at this temperature, along with the poisoning deactivation mechanism at 200 °C." @default.
- W2058869761 created "2016-06-24" @default.
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- W2058869761 date "2013-03-01" @default.
- W2058869761 modified "2023-10-02" @default.
- W2058869761 title "Deactivation mechanistic studies of copper chromite catalyst for selective hydrogenation of 2-furfuraldehyde" @default.
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- W2058869761 doi "https://doi.org/10.1016/j.jcat.2012.10.026" @default.
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