SELECTIVITY FOR CONSECUTIVE GAS-SOLID CATALYTIC REACTION

Gas-Solid Catalytic Reactions

The outline of this chapter is as follows: *.1 will show some application areas together with the number of types of reactors available for carrying out gas-solid catalyzed reactions. Section *.2 will focus on the kinetic models suitable for describing these reactions. Section *.3 will show how to set up the reactor models and will also show the mass transport interactions need to be modeled. T...

High-Temperature Membrane Reactor for Catalytic Gas-Solid Reactions

A mathematical model, based on the dusty-gas model extended with surface diffusion, is presented that describes mass transport owing to molecular diffusion and viscous flow, as well as an instantaneous reversible reaction inside a membrane reactor. The reactants are fed to opposite sides of the membrane, considering masstransfer resistances in the gas phase outside the membrane. The Claus react...

Travelling Waves for Solid-gas Reaction-diffusion Systems

We study a two-species reaction-diffusion problem described by a system consisting of a semilinear parabolic equation and a first order ordinary differential equation, endowed with suitable conditions. We prove the existing of a unique traveling wave profile and give necessary conditions and sufficient conditions for the occurrence of penetration and conversion fronts.

Mathematical Modeling of Fluorination Reaction of Uranium Dioxide and Evaluation of Existing Gas-Solid Reaction Models

Transport Efects in Heterogeneous Catalytic Systems Gas-solid and Liquid-solid Systems: a Primer 1. Introduction

In homogeneous systems reaction occurs in a single phase such as gas or liquid. The rate of reaction of say reactant A, which may be the result of a sequence of mechanistic elementary steps that all occur in the single phase present, then quantifies how many moles of A react per unit time and unit volume of the system as a function of the local composition (concentrations) and temperature. For ...