Enhancement of CO2 adsorption on oxygen-functionalized epitaxial graphene surface under near-ambient conditions

2018 ◽  
Vol 20 (29) ◽  
pp. 19532-19538 ◽  
Author(s):  
Susumu Yamamoto ◽  
Kaori Takeuchi ◽  
Yuji Hamamoto ◽  
Ro-Ya Liu ◽  
Yuichiro Shiozawa ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Co2 Adsorption ◽  
Ambient Pressure ◽  
Epitaxial Graphene ◽  
Functionalized Graphene ◽  
Ambient Conditions ◽  
Graphene Surface ◽  
Ambient Pressure Xps

Enhancement of CO2 adsorption on functionalized graphene with epoxy oxygen was found by ambient pressure XPS, and supported by DFT calculations that include vdW interactions.

Detailed Characterization of MoOx-Modified Rh Metal Particles by Ambient-Pressure XPS and DFT Calculations

2021 ◽  
Vol 125 (8) ◽  
pp. 4540-4549
Author(s):  
Ryo Toyoshima ◽  
Jumpei Kawai ◽  
Kazuhisa Isegawa ◽  
Hiroshi Kondoh ◽  
Anchalee Junkaew ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Ambient Pressure ◽  
Metal Particles ◽  
Detailed Characterization ◽  
Ambient Pressure Xps

scholarly journals Experimental and Computational Investigation of binary drop collisions under elevated pressure

2017 ◽  
Author(s):  
Jan Breitenbach ◽  
Louis Maximilian Reitter ◽  
Muyuan Liu ◽  
Kuan-Ling Huang ◽  
Dieter Bothe ◽  
...  
Keyword(s):  
Relative Velocity ◽  
Computational Study ◽  
Ambient Pressure ◽  
Experimental System ◽  
Elevated Pressure ◽  
Computational Investigation ◽  
Ambient Conditions ◽  
Influencing Parameters ◽  
Gas Layer ◽  
The Impact

Spray systems often operate under extreme ambient conditions like high pressure, which can have a significant influence on important spray phenomena. One of these phenomena is binary drop collisions. Such collisions, depending on the relative velocity and the impact parameter (eccentricity of the collision), can lead to drop bouncing, coalescence or breakup. This experimental and computational study is focused on the description of the phenomenon of drop bouncing, which is caused by a thin gas layer preventing the drops coalescence. To identify the main influencing parameters of this phenomenon, experiments on binary drop collisions are performed in a pressure chamber. This experimental system allows us to investigate the effect of an ambient pressure (namely the density and viscosity of the surrounding gas) on the bouncing/coalescence threshold.DOI: http://dx.doi.org/10.4995/ILASS2017.2017.4758

Dehydration Pathway for the Dissociation of Gas-Phase Formic Acid on Pt(111) Surface Observed via Ambient-Pressure XPS

2018 ◽  
Vol 122 (4) ◽  
pp. 2064-2069 ◽  
Author(s):  
Beomgyun Jeong ◽  
Hongrae Jeon ◽  
Ryo Toyoshima ◽  
Ethan J. Crumlin ◽  
Hiroshi Kondoh ◽  
...  
Keyword(s):  
Formic Acid ◽  
Gas Phase ◽  
Ambient Pressure ◽  
Ambient Pressure Xps

Investigation of gas sensing mechanism of SnO2 based chemiresistor using near ambient pressure XPS

2018 ◽  
Vol 677 ◽  
pp. 284-290 ◽  
Author(s):  
M. Vorokhta ◽  
I. Khalakhan ◽  
M. Vondráček ◽  
D. Tomeček ◽  
M. Vorokhta ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Ambient Pressure ◽  
Sensing Mechanism ◽  
Ambient Pressure Xps ◽  
Near Ambient Pressure Xps

Hard Italian cheese, by near-ambient pressure XPS

2019 ◽  
Vol 26 (1) ◽  
pp. 014015 ◽  
Author(s):  
Tuhin Roychowdhury ◽  
Stephan Bahr ◽  
Paul Dietrich ◽  
Michael Meyer ◽  
Andreas Thißen ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Ambient Pressure Xps ◽  
Near Ambient Pressure Xps

Spray dynamics simulations for pulsatile injection at different ambient pressure and temperature conditions

2019 ◽  
Vol 234 (4) ◽  
pp. 500-519
Author(s):  
Anandteerth Muddapur ◽  
Sahu Srikrishna ◽  
T Sundararajan
Keyword(s):  
Numerical Study ◽  
Ambient Pressure ◽  
Operating Conditions ◽  
Discrete Phase Model ◽  
Ambient Conditions ◽  
Fuel Temperature ◽  
Shape Distortion ◽  
Penetration Length ◽  
Droplet Shape ◽  
System Pressure

A numerical study on the transient characteristics of a pulsatile, iso-octane spray issuing from a pressure-swirl atomizer is presented. The effects of system pressure and temperature, as well as the initial fuel temperature on spray dispersion and evaporation, are highlighted. The computations were carried out using ANSYS FLUENT-15.0, assuming the spray dispersion to be axisymmetric. Gas phase turbulence is simulated using the renormalized group k- ε model, while the discrete phase model is used for tracking fuel droplets. The linear instability sheet atomization model is adopted for the primary breakup of the liquid sheet, and the Taylor Analogy Breakup and Wave Breakup models are adopted for the secondary breakup, depending upon the operating conditions. The drag force on the droplet is evaluated, after incorporating the effects of evaporation and neighbouring droplets, along with droplet shape distortion. The significance of droplet collision on the evolution of droplet size distribution is examined. The local mean drop sizes and spray penetration length are in agreement with the experimental results of the literature. The predicted results indicate that the spray is narrower and penetrates less at higher ambient pressure. In this respect, the additional force on droplets due to local static pressure gradient is examined in detail. The effect of ambient conditions on the spray evaporation process is studied based on the spatio-temporal evolution of the equivalence ratio of the mixture of fuel vapour and air.

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