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Intermediate products in solid‐state reactions of gadolinium oxide and ammonium dihydrogen phosphate
Author(s) -
Uztetik Morkan A.,
Morkan İ.,
DemirözüŞenol S.,
Güler H.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200710971
Subject(s) - gadolinium , chemistry , molar ratio , ammonium dihydrogen phosphate , molar , solid state , phosphate , ammonium , nuclear chemistry , oxide , molar concentration , inorganic chemistry , catalysis , organic chemistry , medicine , fertilizer , dentistry
The solid‐state reactions of Gd 2 O 3 with NH 4 H 2 PO 4 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, NH 4 GdHP 3 O 10 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. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)