ChemInform Abstract: Ethylene Epoxidation on Ag(110): The Role of Subsurface Oxygen.

ChemInform ◽  
1989 ◽  
Vol 20 (48) ◽  
Author(s):  
P. J. VAN DEN HOEK ◽  
E. J. BAERENDS ◽  
R. A. VAN SANTEN
Keyword(s):  
Ethylene Epoxidation ◽  
Subsurface Oxygen

Ethylene epoxidation on silver(110): the role of subsurface oxygen

1989 ◽  
Vol 93 (17) ◽  
pp. 6469-6475 ◽  
Author(s):  
P. J. Van den Hoek ◽  
E. J. Baerends ◽  
R. A. Van Santen
Keyword(s):  
Ethylene Epoxidation ◽  
Subsurface Oxygen

Dynamic Isotope Tracing: Role of Subsurface Oxygen in Ethylene Epoxidation on Silver

1999 ◽  
Vol 184 (1) ◽  
pp. 224-235 ◽  
Author(s):  
Christopher J. Bertole ◽  
Charles A. Mims
Keyword(s):  
Isotope Tracing ◽  
Ethylene Epoxidation ◽  
Subsurface Oxygen

The role of subsurface oxygen in the local oxidation of zirconium and zirconium nitride thin films

2004 ◽  
Vol 447-448 ◽  
pp. 468-473 ◽  
Author(s):  
N. Farkas ◽  
G. Zhang ◽  
K.M. Donnelly ◽  
E.A. Evans ◽  
R.D. Ramsier ◽  
...  
Keyword(s):  
Thin Films ◽  
Zirconium Nitride ◽  
Local Oxidation ◽  
Subsurface Oxygen

Revisit the Role of Chlorine in Selectivity Enhancement of Ethylene Epoxidation

2019 ◽  
Vol 58 (47) ◽  
pp. 21403-21412 ◽  
Author(s):  
Haoxiang Xu ◽  
Lin Zhu ◽  
Yang Nan ◽  
Yuan Xie ◽  
Daojian Cheng
Keyword(s):  
Ethylene Epoxidation

scholarly journals CO2 reduction on pure Cu produces only H2 after subsurface O is depleted: Theory and experiment

2021 ◽  
Vol 118 (23) ◽  
pp. e2012649118
Author(s):  
Guiji Liu ◽  
Michelle Lee ◽  
Soonho Kwon ◽  
Guosong Zeng ◽  
Johanna Eichhorn ◽  
...  
Keyword(s):  
Ethylene Production ◽  
Density Functional ◽  
Co2 Reduction ◽  
Density Functional Theory Method ◽  
Subsurface Oxygen ◽  
Prolonged Reaction Time ◽  
Cu Catalysts ◽  
Pure Cu

We elucidate the role of subsurface oxygen on the production of C2 products from CO2 reduction over Cu electrocatalysts using the newly developed grand canonical potential kinetics density functional theory method, which predicts that the rate of C2 production on pure Cu with no O is ∼500 times slower than H2 evolution. In contrast, starting with Cu2O, the rate of C2 production is >5,000 times faster than pure Cu(111) and comparable to H2 production. To validate these predictions experimentally, we combined time-dependent product detection with multiple characterization techniques to show that ethylene production decreases substantially with time and that a sufficiently prolonged reaction time (up to 20 h) leads only to H2 evolution with ethylene production ∼1,000 times slower, in agreement with theory. This result shows that maintaining substantial subsurface oxygen is essential for long-term C2 production with Cu catalysts.

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