Modeling of carbon monoxide oxidation on the catalytic surface in the two-dimensional case

2018 ◽  
pp. 96-102
Author(s):  
Iryna Ryzha ◽  
Keyword(s):  
Carbon Monoxide ◽  
Carbon Monoxide Oxidation ◽  
Dimensional Case ◽  
Two Dimensional ◽  
Catalytic Surface

scholarly journals Modeling of carbon monoxide oxidation on the catalytic surface in the two-dimensional case

2017 ◽  
pp. 83-89
Author(s):  
Iryna Ryzha
Keyword(s):  
Carbon Monoxide ◽  
Co Oxidation ◽  
Stability Region ◽  
Pt Catalyst ◽  
Dimensional Case ◽  
Two Dimensional ◽  
Catalytic Surface ◽  
One Dimensional ◽  
Co Oxidation Reaction ◽  
The Stability

A two-dimensional model of carbon monoxide (CO) catalytic oxidation on a platinum (Pt) surface for the Langmuir-Hinshelwood mechanism is investigated. The adsorbate-driven (1×1)-(1×2) structural phase transition of Pt(110) and the formation of new crystal planes on the catalytic surface (faceting) as well as the effect of the substrate temperature are taken into account. It is shown that the stability region for CO oxidation reaction changes when two dimensions are taken into account. Similarly to the one-dimensional case, the reaction of CO oxidation on Pt-catalyst surface is periodic in the stability region. Mixed-mode oscillations (MMO) for CO and oxygen (O) surface coverages as well as the fraction of the surface in the non-reconstructed (1×1)-state were found. Such behavior cannot be predicted by one-dimensional models when the equation for the change of degree of faceting is not taken into account.

Room temperature carbon monoxide oxidation based on two-dimensional gold-loaded mesoporous iron oxide nanoflakes

2018 ◽  
Vol 54 (61) ◽  
pp. 8514-8517 ◽  
Author(s):  
Yusuf Valentino Kaneti ◽  
Shunsuke Tanaka ◽  
Yohei Jikihara ◽  
Tsuruo Nakayama ◽  
Yoshio Bando ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Iron Oxide ◽  
Room Temperature ◽  
Carbon Monoxide Oxidation ◽  
Two Dimensional

A room-temperature catalyst for carbon monoxide oxidation based on gold-loaded mesoporous maghemite nanoflakes has been developed.

The formation of gas hydrates under shock wave impact on the bubble media (two-dimensional case)

2010 ◽  
Vol 7 ◽  
pp. 90-97
Author(s):  
M.N. Galimzianov ◽  
I.A. Chiglintsev ◽  
U.O. Agisheva ◽  
V.A. Buzina
Keyword(s):  
Shock Wave ◽  
Gas Hydrates ◽  
Hydrate Formation ◽  
Dimensional Case ◽  
Two Dimensional ◽  
Wave Impact ◽  
Bubble Liquid ◽  
One Dimensional ◽  
Bubble Media ◽  
Main Factors

Formation of gas hydrates under shock wave impact on bubble media (two-dimensional case) The dynamics of plane one-dimensional shock waves applied to the available experimental data for the water–freon media is studied on the base of the theoretical model of the bubble liquid improved with taking into account possible hydrate formation. The scheme of accounting of the bubble crushing in a shock wave that is one of the main factors in the hydrate formation intensification with increasing shock wave amplitude is proposed.

Regions-based Two-dimensional Continua: The Euclidean Case

2018 ◽  
Author(s):  
Geoffrey Hellman ◽  
Stewart Shapiro
Keyword(s):  
Mathematical Induction ◽  
Dimensional Case ◽  
Two Dimensional ◽  
Entire Space ◽  
Euclidean Case ◽  
Free Basis ◽  
One Dimensional ◽  
Archimedean Property ◽  
The One

This chapter develops a Euclidean, two-dimensional, regions-based theory. As with the semi-Aristotelian account in Chapter 2, the goal here is to recover the now orthodox Dedekind–Cantor continuum on a point-free basis. The chapter derives the Archimedean property for a class of readily postulated orientations of certain special regions, what are called “generalized quadrilaterals” (intended as parallelograms), by which the entire space is covered. Then the chapter generalizes this to arbitrary orientations, and then establishes an isomorphism between the space and the usual point-based one. As in the one-dimensional case, this is done on the basis of axioms which contain no explicit “extremal clause”, and we have no axiom of induction other than ordinary numerical (mathematical) induction.

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