Reaction rate oscillation of CO oxidation on Pt(210)

Reaction Rate Oscillations during Catalytic Co Oxidation- a Brief Overview

INTRODUCTION It is not our intent here to present a comprehensive review of the dynamic behavior of the catalytic oxidation of CO. This reaction is one of the most widely studied in the field of catalysis. A review paper by Engel and Ertl [ l ] has examined the basic kinetic and mechanistic aspects, and a comprehensive paper by Razon and Schmitz [2 ’J was recently devoted to its dynamic behavio...

Local reaction kinetics by imaging: CO oxidation on polycrystalline platinum.

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هدف از آزمایش اول بررسی اثر سطوح مختلف سریسین [0 (control), 0.1, 0.5, 1.0, 2.5 %] افزوده شده به محیط , ivm بر cumulus cell expansion، بلوغ هسته و توسعه متوالی جنین، در گوسفندان نژاد سنجابی در فصل تولید مثلی می باشد. از سرگیری میوز به وسیله خارج شدن اولین پولار بادی اندازه گیری و هم چنین درصد رسیدن جنین های دو سلولی به مرحله کلیواژ و بلاستوسیت نیز به عنوان نشانه ای از میزان شایستگی توسعه اولیه ج...

Chemical diffusion of CO in mixed CO + O adlayers and reaction-front propagation in CO oxidation on Pd(100).

Within the framework of a realistic atomistic lattice-gas model, we present the theoretical formulation and simulation procedures for precise analysis of the chemical diffusion flux of highly mobile CO within a nonuniform interacting mixed CO + O adlayer on a Pd(100) surface. The approach applies in both regimes of relatively immobile unequilibrated and fairly mobile near-equilibrated O adlayer...

Boundary effects in a surface reaction model for CO oxidation

The surface reaction model of Ziff, Gulari, and Barshad (ZGB) is investigated on finite systems with “hard” oxygen boundary conditions. The rate of production of CO2 is calculated as a function of y and system size. When the rate of CO adsorption y is above the firstorder transition value y,, the reactive region is found to extend into the system a distance 6 which scales as (y-yz) -o.4o when y...