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- W1971642012 abstract "Methanol (MeOH) conversion over a commercial Cu/ZnO/Al2O3 catalyst was investigated with different co-feed gas, namely, He, H2, H2O or O2 from 423 to 573 K. In-situ XRD results indicate that oxidic Cu was mostly reduced during the MeOH conversion reactions, except in the presence of O2, when the Cu state seems to depend on the pretreatment. The steady-state activity follows: MeOH + O2 > MeOH > MeOH + H2 > MeOH + H2O. In the presence of H2, a sequential H-abstraction of MeOH is indicated by the fact that formaldehyde (FAL) was produced at low MeOH conversion and CO dominated at high conversion. In the absence of H2, no FAL was produced while CO dominated and some methyl formate (MF) was observed. Oxygen and water in the feed promoted CO2 formation and suppressed the formation of CO and MF. A reaction scheme involving mainly H-abstraction and O-addition steps is proposed." @default.
- W1971642012 created "2016-06-24" @default.
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- W1971642012 date "2007-11-01" @default.
- W1971642012 modified "2023-09-27" @default.
- W1971642012 title "Effect of co-feed species on methanol conversion over Cu/ZnO/Al2O3 and its possible mechanism" @default.
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- W1971642012 doi "https://doi.org/10.1016/j.molcata.2007.07.035" @default.
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