Synthesis and Characterization of Amorphous Nickel(II) Aluminosilicate

Abstract

Amorphous aluminosilicates containing about 12 wt.% nickel have been synthesized by cation exchange. Approximately 40 % of the nickel content is present in the form of octahedral [Ni(H20)6]2+ ions while the bulk of Ni2+ is coordinated both by H2O molecules and by oxygen atoms of the aluminosilicate framework. When the materials are heated in air at 350 oC, a change in the nickel coordination environment/geometry and possibly also a partial oxidation take place.

Amorfni aluminosilikati sa oko 12 mas. % nikla dobijeni su jonskom izmenom. Oko 40% nikla nalazi se u obliku oktaedarski koordiniranih jona [Ni(H20)6]2+, a preostali nikal koordiniran je sa molekulima vode i kiseonikovim atomima iz aluminosilikatne rešetke. Zagrevanjem na vazduhu, na oko 350 0C dolazi do promena u koordinaciji, odnosno geometriji nikla, a moguće je da dolazi i do delimične oksidacije nikla.