Parameters Expediting the Thermal Conversion of Ba-Exchanged Zeolite A to Monoclinic Celsian

Table 2

Composition of the products.

Sample	Na (meq/g)	x^aNa	Na2O w.%^b	Chemical formula^b,c
1	0.27	0.05	0.84	Ba0.950Na0.100Al2Si2O8
2	0.43	0.08	1.33	Ba0.921Na0.158Al2Si2O8
3	0.58	0.10	1.80	Ba0.894Na0.212Al2Si2O8
4	0.74	0.13	2.29	Ba0.866Na0.268Al2Si2O8

^aequivalent fraction.
^bafter thermal treatment at 950°C for 2 hours.
^cchemical formula of the product celsian.