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Adsorption studies on molecular sieve zeolites

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COMPUTERISED

C O N T E N T S

Page CHAPTER - I : INTRODUCTION 1

Synthetic zeolite type A 2

Unit cell composition and

cation sites 3

Sorption properties 5

Zeolite voids 6

Thermal stability 7

Applications 9

CHAPTER - II : EXPERIMENTAL 11 Materials and ion exchange 11

Composition of zeolites 12

BET apparatus 14

Adsorption of water,

methanol and n-hexane 18

CHAPTER - III : RESULTS AND DISCUSSION 21 X-ray, thermal analysis

and stability of zeolites 21 Desorption of water from

zeolites 26

Hydrothermal stability of

zeolites 27

Adsorption of nitrogen 29

... (ii)

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- ii -

Page Langmuir, BET and

H-J equations 30

Surface area estimation 32

Free energy of sorption and

pore volume of zeolites 35

Sorption of water and

organic vapour 39

Site selectivity of cations

In zeolite A 41

REFERENCES 43

SUMMARY 47

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