Hello Dears
Is there relation between performance and properties of zeolites for different catalysis process?
For example for catalytic converter, zeolite should investigate in terms of TPD test.
Are properties of zeolites general or for each process different?
With regards
dear Amanj.
it's pretty obvious that there is a relation between performance and properties of zeolite but it doesn't mean in all processes have the same performance. in the chemical process, its function strongly dependent on the conditions (temperature, pressure and etc). for example in the pyrolysis process which is carried out at Higher temperature, zeolite as a catalyst drives the reaction towards Aromatization Reactions but in moderate temperature can act as surface catalysts for the ketonization reaction.
it would be better if you explained a little about the process that you are considered. but, as far as I know, the characterizations is not limited to just TPD. in addition to the acidity of catalyst, it is important that you investigate the dispersion of active phase over the zeolite through H2 chemisorption or TEM and also if you modify the zeolite, you can check the changes that happen during modification. for instance, investigation of changes in surface area, metal dispersion and also particle size.
finally, It is my pleasure if I can help you.
Good luck
Selection of zeolites for various types of reactions are based mainly on the following two properties (a) Pore size and (b) Acidity.
A vast pool of literature is available in the form of published literature on zeolites. You may find them out through an appropriate search engine.
You may search for published literature from Dr. Jagannath Das. He has published many patents and papers on this subject.
Zeolites are highly porous crystalline alumino -silicates .They have good catalytic performance in petroleum industry as a versatile material. . Proton-exchanged zeolites are used in the petrochemical industry for cracking crude oil fractions . Zeolites are useful as industrial water-softeners and find applications in the removal of radioactive Cs+ and Sr2+ cations from liquid nuclear waste .Toxic anions such as arsenic, chromium ,, cyanide and radioactive iodide can be removed by adsorption into the zeolites
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