Studies on Cu-EDTA adsorbed Dealuminated Scolecite

Department of Chemistry, Dr. H. S. Gour University, Sagar-470 003

Manuscript received 10 April 1995, revised 18 March 1996, accepted 9 July 1996

Dealumination of natural zeolite scclecite has been done by strong HCI treatment. Aluminium is removed from the framework in soluble AI-EDTA form. Si/AI ratio Increases from 1.56 to 3.05. Interaction of metal (Cu) and ligand (EDTA) on dealuminated scolecite has been done at suitable pH yielding Cu-EDTA complex on dealuminated scolecite phase. Dealuminated scolecite shows improved thermal stability and reasonably good crystallinity with slight change in lattice parameters.