Affordable Access

A comparative study on the thermal decomposition of lanthanide biscitrato chromate(III) hydrates, $Ln$[$Cr(C_6H_5O_7)_2$]$.n${H_2O}$$

Authors
Publisher
Springer
Publication Date
Keywords
  • Inorganic & Physical Chemistry

Abstract

The thermal decomposition of lanthanide biscitrato chromate (III) hydrates, [Ln(Cr(C6H5O7)(2)].nH(2)O where Ln = Pr, Nd, Dy and Ho have been carried out in static air and flowing argon atmospheres and thereby compared the decomposition nature with that of the lanthanum biscitrato chromate(III) dihydrate reported earlier. The precursor complexes decompose in four major steps. Stable oxycarbonates and chromates(V) have been isolated as intermediates. It has been found that for heavier lanthanide complexes all the decomposition steps are pushed to 'higher temperature' ranges. Moreover, the thermal stability range of chromates(V) is much lesser compared to that of LaCrO4. Based on the observed experimental results a general scheme for the decomposition of lanthanide biscitrato chromate(III) hydrates is proposed.

There are no comments yet on this publication. Be the first to share your thoughts.