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Novel Method for Preparing NH4NiPO4·6H2O: Hydrogen Bonding Coacervate Selective Self‐assembly

Novel Method for Preparing NH4NiPO4·6H2O: Hydrogen Bonding Coacervate Selective Self‐assembly The single phase NH4NiPO4·6H2O was synthesized by solid‐state reaction at room temperature using NiSO4·6H2O and (NH4)3PO4·3H2O as raw materials. The NH4NiPO4·6H2O and its calcined products were characterized using X‐ray powder diffraction (XRD), thermogravimetry and differential thermal analyses (TG/DTA), Fourier transform IR (FT‐IR), ultraviolet‐visible (UV‐vis) absorption spectroscopy, and scanning electron microscopy (SEM). The results showed that the product dried at 80°C for 3 h was orthorhombic NH4NiPO4·6H2O [space group Pmm2(25)], and surfactant polyethylene glycol (PEG)‐400 can direct growth of crystal NH4NiPO4·6H2O. The thermal process of NH4NiPO4·6H2O experienced three steps, which involve the dehydration of the five crystal water molecules at first, and then deamination, dehydration of the one crystal water, intramolecular dehydration of the protonated phosphate groups together, at last crystallization of Ni2P2O7. The product of thermal decomposition at 150°C for 2 h, orthorhombic NH4NiPO4·H2O, is layered compound with an interlayer distance of 0.8370 nm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chinese Journal of Chemistry Wiley

Novel Method for Preparing NH4NiPO4·6H2O: Hydrogen Bonding Coacervate Selective Self‐assembly

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References (13)

Publisher
Wiley
Copyright
Copyright © 2010 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1001-604X
eISSN
1614-7065
DOI
10.1002/cjoc.201190009
Publisher site
See Article on Publisher Site

Abstract

The single phase NH4NiPO4·6H2O was synthesized by solid‐state reaction at room temperature using NiSO4·6H2O and (NH4)3PO4·3H2O as raw materials. The NH4NiPO4·6H2O and its calcined products were characterized using X‐ray powder diffraction (XRD), thermogravimetry and differential thermal analyses (TG/DTA), Fourier transform IR (FT‐IR), ultraviolet‐visible (UV‐vis) absorption spectroscopy, and scanning electron microscopy (SEM). The results showed that the product dried at 80°C for 3 h was orthorhombic NH4NiPO4·6H2O [space group Pmm2(25)], and surfactant polyethylene glycol (PEG)‐400 can direct growth of crystal NH4NiPO4·6H2O. The thermal process of NH4NiPO4·6H2O experienced three steps, which involve the dehydration of the five crystal water molecules at first, and then deamination, dehydration of the one crystal water, intramolecular dehydration of the protonated phosphate groups together, at last crystallization of Ni2P2O7. The product of thermal decomposition at 150°C for 2 h, orthorhombic NH4NiPO4·H2O, is layered compound with an interlayer distance of 0.8370 nm.

Journal

Chinese Journal of ChemistryWiley

Published: Dec 1, 2010

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