FORMATION OF CALCIUM AMMONIUM AND CALCIUM PYROPHOSPHATES DURING THERMAL TREATMENT IN THE NH4H2PO4 – CAO SYSTEM

Phase transformations occurring during the heating of an NH4H2PO4 : CaO = 2 : 1 (molar ratio) mixture up to 800 °C were studied by thermogravimetric and X-ray diffraction analyses. The sequence of formation of calcium ammonium pyrophosphate, calcium dihydrogen pyrophosphate and calcium metaphosphate depending on the temperature range was established.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-09-29
DOI
https://doi.org/10.5281/zenodo.23034309
Primary Topic
Thermal and Kinetic Analysis
Type
article
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article

FORMATION OF CALCIUM AMMONIUM AND CALCIUM PYROPHOSPHATES DURING THERMAL TREATMENT IN THE NH4H2PO4 – CAO SYSTEM

G.E. Melikulova, Kh.Ch. Mirzakulov, Sh.M. Khujamberdiev
Zenodo (CERN European Organization for Nuclear Research)
Thermal and Kinetic Analysis
article

FORMATION OF CALCIUM AMMONIUM AND CALCIUM PYROPHOSPHATES DURING THERMAL TREATMENT IN THE NH4H2PO4 – CAO SYSTEM

G.E. Melikulova, Kh.Ch. Mirzakulov, Sh.M. Khujamberdiev
article en

Abstract

Phase transformations occurring during the heating of an NH4H2PO4 : CaO = 2 : 1 (molar ratio) mixture up to 800 °C were studied by thermogravimetric and X-ray diffraction analyses. The sequence of formation of calcium ammonium pyrophosphate, calcium dihydrogen pyrophosphate and calcium metaphosphate depending on the temperature range was established.

Zenodo (CERN European Organization for Nuclear Research)
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Thermal and Kinetic Analysis
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FORMATION OF CALCIUM AMMONIUM AND CALCIUM PYROPHOSPHATES DURING THERMAL TREATMENT IN THE NH4H2PO4 – CAO SYSTEM — G.E. Melikulova, Kh.Ch. Mirzakulov, et al. · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS