scholarly journals Ambient Pressure Photoemission Spectroscopy Reveals the Mechanism of Carbon Soot Oxidation in Ceria-Based Catalysts

ChemCatChem ◽  
2016 ◽  
Vol 8 (17) ◽  
pp. 2748-2751 ◽  
Author(s):  
Lluís Soler ◽  
Albert Casanovas ◽  
Carlos Escudero ◽  
Virginia Pérez-Dieste ◽  
Eleonora Aneggi ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Soot Oxidation ◽  
Photoemission Spectroscopy ◽  
Carbon Soot

scholarly journals Cover Picture: Ambient Pressure Photoemission Spectroscopy Reveals the Mechanism of Carbon Soot Oxidation in Ceria-Based Catalysts (ChemCatChem 17/2016)

ChemCatChem ◽  
2016 ◽  
Vol 8 (17) ◽  
pp. 2733-2733
Author(s):  
Lluís Soler ◽  
Albert Casanovas ◽  
Carlos Escudero ◽  
Virginia Pérez-Dieste ◽  
Eleonora Aneggi ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Soot Oxidation ◽  
Photoemission Spectroscopy ◽  
Carbon Soot

scholarly journals Ambient Pressure Photoemission Spectroscopy Reveals the Mechanism of Carbon Soot Oxidation in Ceria-Based Catalysts

ChemCatChem ◽  
2016 ◽  
Vol 8 (17) ◽  
pp. 2735-2735 ◽  
Author(s):  
Lluís Soler ◽  
Albert Casanovas ◽  
Carlos Escudero ◽  
Virginia Pérez-Dieste ◽  
Eleonora Aneggi ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Soot Oxidation ◽  
Photoemission Spectroscopy ◽  
Carbon Soot

scholarly journals Prospects for the expansion of standing wave ambient pressure photoemission spectroscopy to reactions at elevated temperatures

2022 ◽  
Vol 40 (1) ◽  
pp. 013207
Author(s):  
Osman Karslıoğlu ◽  
Lena Trotochaud ◽  
Farhad Salmassi ◽  
Eric M. Gullikson ◽  
Andrey Shavorskiy ◽  
...  
Keyword(s):  
Standing Wave ◽  
Elevated Temperatures ◽  
Ambient Pressure ◽  
Photoemission Spectroscopy

Near ambient pressure photoemission spectroscopy of metal and semiconductor surfaces

2015 ◽  
Vol 12 (3) ◽  
pp. 259-262 ◽  
Author(s):  
Iain D. Baikie ◽  
Angela Grain ◽  
James Sutherland ◽  
Jamie Law
Keyword(s):  
Ambient Pressure ◽  
Photoemission Spectroscopy ◽  
Semiconductor Surfaces

scholarly journals Potential of Ceria-Zirconia-Based Materials in Carbon Soot Oxidation for Gasoline Particulate Filters

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 768
Author(s):  
Eleonora Aneggi ◽  
Alessandro Trovarelli
Keyword(s):  
Oxygen Vacancies ◽  
Mixed Oxides ◽  
Direct Injection ◽  
Soot Oxidation ◽  
Operating Conditions ◽  
Gasoline Direct Injection ◽  
Low Oxygen ◽  
Engine Exhaust ◽  
Partial Pressures ◽  
Carbon Soot

ZrO2 and Ce0.8Zr0.2O2 mixed oxides were prepared and tested in the oxidation of carbon soot at different oxygen partial pressures and degrees of catalyst/soot contact to investigate their activity under typical gasoline direct injection (GDI) operating conditions. Under reductive atmospheres, generation of oxygen vacancies occurs in Ce0.8Zr0.2O2, while no reduction is observed on ZrO2. Both materials can oxidize carbon under high oxygen partial pressures; however, at low oxygen partial pressures, the presence of carbon can contribute to the reduction of the catalyst and formation of oxygen vacancies, which can then be used for soot oxidation, increasing the overall performance. This mechanism is more efficient in Ce0.8Zr0.2O2 than ZrO2, and depends heavily on the interaction and the degree of contact between soot and catalyst. Thus, the ability to form oxygen vacancies at lower temperatures is particularly helpful to oxidize soot at low oxygen partial pressures, and with higher CO2 selectivity under conditions typically found in GDI engine exhaust gases.

scholarly journals In situ environmental HRTEM discloses low temperature carbon soot oxidation by ceria–zirconia at the nanoscale

2019 ◽  
Vol 55 (27) ◽  
pp. 3876-3878 ◽  
Author(s):  
Eleonora Aneggi ◽  
Jordi Llorca ◽  
Alessandro Trovarelli ◽  
Mimoun Aouine ◽  
Philippe Vernoux
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Low Temperature ◽  
Room Temperature ◽  
Soot Oxidation ◽  
Environmental Transmission ◽  
Transmission Electron ◽  
Carbon Soot ◽  
Environmental Transmission Electron Microscopy

In situ environmental transmission electron microscopy discloses room temperature carbon soot oxidation by ceria–zirconia at the nanoscale.

Observation of in situ oxidation dynamics of vanadium thin film with ambient pressure X-ray photoemission spectroscopy

2016 ◽  
Vol 120 (20) ◽  
pp. 205305 ◽  
Author(s):  
Geonhwa Kim ◽  
Joonseok Yoon ◽  
Hyukjun Yang ◽  
Hojoon Lim ◽  
Hyungcheol Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Ambient Pressure ◽  
Photoemission Spectroscopy ◽  
In Situ Oxidation ◽  
X Ray

STRUCTURAL AND ELECTRICAL PROPERTIES OF DIAMOND-LIKE CARBON THIN FILMS PREPARED IN INERT GAS CONDITION

2005 ◽  
Vol 12 (05n06) ◽  
pp. 691-696 ◽  
Author(s):  
M. RUSOP ◽  
T. SOGA ◽  
T. JIMBO ◽  
M. UMENO ◽  
M. SHARON
Keyword(s):  
Thin Films ◽  
Electrical Resistivity ◽  
Electrical Properties ◽  
Ambient Pressure ◽  
Diamond Like Carbon ◽  
Spectroscopic Techniques ◽  
Optical Gap ◽  
Structural And Electrical Properties ◽  
Carbon Soot ◽  
Carbon Thin Films

The effects of ambient helium gas pressure on the optical, structural and electrical properties of the diamond-like carbon thin films from camphoric carbon soot target, deposited by pulsed laser deposition have been studied. Optical gap and electrical resistivity are found to increase initially at low ambient pressure of 0.008 Torr. With further increase in ambient pressure up to 2.6 Torr, optical gap and electrical resistivity are found to decrease. The films are characterized for their structural properties using different spectroscopic techniques such as, XPS, Raman, and FTIR spectroscopy, and surface morphological techniques like SEM and AFM, and their electrical properties using four-probe resistance measurement.

scholarly journals In situ observation of wet oxidation kinetics on Si(100) via ambient pressure x-ray photoemission spectroscopy

2008 ◽  
Vol 103 (4) ◽  
pp. 044104 ◽  
Author(s):  
Massimiliano Rossi ◽  
Bongjin S. Mun ◽  
Yoshiharu Enta ◽  
Charles S. Fadley ◽  
Ki-Suk Lee ◽  
...  
Keyword(s):  
Oxidation Kinetics ◽  
Ambient Pressure ◽  
Photoemission Spectroscopy ◽  
In Situ Observation ◽  
Wet Oxidation ◽  
X Ray
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