Assignment 1 adsorption of zeolites 2013

Laurentian University
Engineering program
Pollution Control
Prof. Ashley Scott

Assignment#1

Zeolites

Name: Marciel Gaier February, 2013

SUMARY

1. Introduction 4
2. Structures of Zeolites for Selective Adsorption 9
3. Isotherms used to model the Adsorption Capacity Of Zeolites 10
3.1 Factors to Consider for Isotherms in Zeolites 13
4. Industrial Processes that Utilize Zeolites 14
4.1 Industrial Application: Gas Drying 15
4.2 Industrial Application: Production of Hydrogen from SMR Off-Gas 17
4.3 Industrial Application: Production of Methane and Carbon Dioxide From Landfill Gas 19
4.4 Industrial Application: Extra comments about the Industrial Process 20
5. Conclusion 20
6. References 21

ABSTRACT

A zeolite membranehave some properties (temperature stability, solvent resistance) with a perfect shape selectivity. Due to their ``molecular sieve'' function, zeolite membranes can discriminate the components of gaseous or liquid mixtures dependent on their molecular size and the other factors. This molecular sieving principle requires a pinhole- and crack-free zeolite membrane. All these factors change the ishoterms and affect they properties. Many structures specify the type of adsorption as polarity, pore size, temperature, components and others. The most useful applications for adsorband zeolites in the industry and that we abord in the assignmet are Gas Drying, Production of Methane and Carbon Dioxide From Landfill and Gas Production of Hydrogen from SMR Off-Gas.

1. Introduction
Little definition: Zeolites are microporous crystalline solids with well-defined structures. Commum contain silicon, aluminium and oxygen in their framework and some cations, water aor other molecules. There are zeolites that occur naturally as minerals, and are synthetic made commercially for specific uses, like adsorband.
Zeolites are used in many applications because of their porous properties. The