SELECTIVITY OF 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...

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

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...

Catalytic Aerobic Oxidation of Alkenes by Ag@Metal Organic Framework with High Catalytic Activity and Selectivity

By coupling of Fe2O3@SiO2 particles with metal organic Framework (MOF) the magnetic MOF structure was fabricated. Precipitation and hydrothermal methods were applied for synthesis of core and MOF. Silver nanoparticles were deposited on nickel based metal organic framework surface and magnetic Fe2O3@SiO2@MOF@Ag was obtained. Because of strong coupling between silver nanoparticles and metal organ...

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 ...