Engineering well-defined rare earth oxide-based nanostructures for catalyzing C1 chemical reactions

Yuan, Kun; Zhang, Yawen

doi:10.1039/d0qi00750a

Cited by 17 publications

(6 citation statements)

References 135 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rare earth oxide surfaces play an important role in heterogeneous catalysis. Fields of applications include petroleum chemical industry, catalytic combustion, automotive emission control, and purification of industrial waste [ 2 , 3 , 4 , 5 ]. The catalytic activity of rare earth oxides stem from low energy spin and charge fluctuations [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Raaen

2021

Nanomaterials

View full text Add to dashboard Cite

Studies of adsorption of CO2 on nanoscopic surfaces are relevant for technological applications in heterogeneous catalysis as well as for sorption of this important greenhouse gas. Presently, adsorption of carbon dioxide on pure and oxidized thin samarium layers near mono-layer thickness on Ni(100) has been investigated by photoelectron spectroscopy and temperature programmed desorption. It is observed that very little CO2 adsorb on the metallic sample for exposures in the vacuum regime at room temperature. For the oxidized sample, a large enhancement in CO2 adsorption is observed in the desorption measurements. Indications of carbonate formation on the surface were found by C 1s and O 1s XPS. After annealing of the oxidized samples to 900 K very little CO2 was found to adsorb. Differences in desorption spectra before and after annealing of the oxidized samples are correlated with changes in XPS intensities, and with changes in sample work function which determines the energy difference between molecular orbitals and substrate Fermi level, and thus the probability of charge transfer between adsorbed molecule and substrate.

show abstract

Section: Introductionmentioning

confidence: 99%

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Raaen

2021

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…(Figure S18) They did not affect the WGSR performance directly. The dissociative adsorption of water into an oxygen vacancy was a strongly exothermic process, following that water dissociation for the WGSR tended to take place at the interface with an oxygen vacancy nearby. , Therefore, the concentration of oxygen vacancies was related with the water activation capability. Figure c shows the Ce 3+ -OH signal of four samples in in situ DRIFTS spectra, which was directly associated with the H 2 O activation process to generate hydroxyl species and then exhibited the same trend with the oxygen vacancy content.…”

Section: Resultsmentioning

confidence: 99%

Weakening the Metal–Support Interactions of M/CeO₂ (M = Co, Fe, Ni) Using a NH₃-Treated CeO₂ Support for an Enhanced Water–Gas Shift Reaction

et al. 2022

Self Cite

View full text Add to dashboard Cite

The metal–support interface plays a crucial role in heterogeneous catalysis. The modulation of the metal–support interaction (MSI) affords the possibility of promoting the catalytic efficiency per active site. Here, we report a strategy to modulate the interfacial interaction and then optimize the interfacial activity of Co/CeO2 catalysts for the water–gas shift reaction (WGSR) by a facile NH3 treatment process for the CeO2 support. The sample of Co/800N-CeO2 treated at 800 °C exhibited the highest reaction rate of 260 μmolCO/(gCo s), which was 23.8 times higher than the rate of the untreated Co/CeO2 sample. A combination of ex situ and in situ characterizations suggested that addition of the NH3 treatment process did not only weaken the metal–support interaction between the Co species and CeO2 support to strengthen CO adsorption and CO activation ability but also induced oxygen vacancy generation under reaction conditions to accelerate H2O activation. Both worked together in promoting the catalytic efficiency for the WGSR via the carboxyl pathway at a low temperature. It was worth mentioning that the N species of the CeO2 support introduced by the NH3 treatment was removed after changing the catalyst structure under reaction conditions. The interfacial structure was robust in a 60 h test at 400 °C due to the coexistence mechanism of carboxyl and formate pathways avoiding the poisoning effect of formate species on the active sites. The construction of active interfaces could be extended to Fe/CeO2 and Ni/CeO2 catalysts and could bring great promise in the design of the interfacial structure of supported catalysts in wide applications including chemical transformation reactions and industrial catalysis.

show abstract

“…[8][9][10] For example, at a fixed CO/H 2 ratio of 1/0.6, syngas can be used in the production of hydrocarbons, and methanol can be synthesized with a CO/H 2 ratio of 1/2. [11][12][13] Industrially, the production of syngas is mainly through the reformation of non-renewable fuels, such as coal and petroleum coke, 14,15 which consumes a large amount of energy. However, converting CO 2 into syngas can be realized under ambient temperature and pressure from the electrochemical reduction of CO 2 to CO and H 2 since the hydrogen evolution reaction (HER) cannot be completely avoided.…”

Section: Introductionmentioning

confidence: 99%

Efficient electroreduction of CO₂to syngas over ZIF-8 derived oxygen vacancy-rich ZnO nanomaterials

et al. 2023

View full text Add to dashboard Cite

show abstract

Engineering well-defined rare earth oxide-based nanostructures for catalyzing C1 chemical reactions

Abstract: C1 chemical reactions have attracted extensive attentions in recent decades due to their significant roles in energy transfer & utilization and environmental protection. Among various catalytic materials, rare earth oxide-based...

Cited by 17 publications

References 135 publications

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Weakening the Metal–Support Interactions of M/CeO₂ (M = Co, Fe, Ni) Using a NH₃-Treated CeO₂ Support for an Enhanced Water–Gas Shift Reaction

Efficient electroreduction of CO₂to syngas over ZIF-8 derived oxygen vacancy-rich ZnO nanomaterials

Contact Info

Product

Resources

About

Engineering well-defined rare earth oxide-based nanostructures for catalyzing C1 chemical reactions

Abstract: C1 chemical reactions have attracted extensive attentions in recent decades due to their significant roles in energy transfer & utilization and environmental protection. Among various catalytic materials, rare earth oxide-based...

Cited by 17 publications

References 135 publications

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Adsorption of Carbon Dioxide on Mono-Layer Thick Oxidized Samarium Films on Ni(100)

Weakening the Metal–Support Interactions of M/CeO2 (M = Co, Fe, Ni) Using a NH3-Treated CeO2 Support for an Enhanced Water–Gas Shift Reaction

Efficient electroreduction of CO2to syngas over ZIF-8 derived oxygen vacancy-rich ZnO nanomaterials

Contact Info

Product

Resources

About

Weakening the Metal–Support Interactions of M/CeO₂ (M = Co, Fe, Ni) Using a NH₃-Treated CeO₂ Support for an Enhanced Water–Gas Shift Reaction

Efficient electroreduction of CO₂to syngas over ZIF-8 derived oxygen vacancy-rich ZnO nanomaterials