Intermediate products in solid-state reactions of gadolinium oxide and ammonium dihydrogen phosphate by A. Uztetik Morkan, I. Morkan, S. Demirözü-Senol, and H. Güler

Crystal Research and Technology

Cryst. Res. Technol. 42, 1007 (2007) - Abstract -

Intermediate products in solid-state reactions of gadolinium oxide and ammonium dihydrogen phosphate

A. Uztetik Morkan, I. Morkan, S. Demirözü-Senol, and H. Güler*

Department of Chemistry, Abant İzzet Baysal University, 14280, Bolu, Turkey
*Department of Chemistry, Balýkesir University, 10100, Balýkesir, Turkey

Keywords	gadolinium, phosphates, solid state, XRD, IR spectroscopy
PACS	83.80.-k
DOI	10.1002/crat.200710971

The solid-state reactions of Gd₂O₃ with NH₄H₂PO₄ using various molar ratios (3:6, 2:8, 1:6 and 1:8) of the reactants were investigated at different temperatures (350-1100°C) to observe the intermediate compounds. Analysis of the X-ray powder diffraction patterns of the products obtained at 350°C; for the compositions of 2:8, 1:6 and 1:8 molar ratios revealed the formation of a new compound, NH₄GdHP₃O₁₀ which was reported previously for Nd, Ho and Er. At higher temperatures, gadolinium tripolyphosphate was obtained for all of the molar ratios. On the other hand, the IR data of the products also confirmed the proposed reaction pathways.

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