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Dehydration, water vapor adsorption and desorption behavior of Zn[B3O3(OH)5] · H2O and Zn[B3O4(OH)3]

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Date
2012-11
Author
Alp, Burcu
Gönen, Mehmet
Atakul Savrık, Sevdiye
Balköse, Devrim
Ülkü, Semra
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Abstract
The dehydration behaviors of two different hydrated zinc borate species, Zn[B3O3(OH)5] · H2O and Zn[B3O4(OH)3], which are industrially important flame retardants, were studied by thermal gravimetric(TG) analysis and in situ diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy. Dehydration onset temperatures of Zn[B3O3(OH)5] · H2O and Zn[B3O4(OH)3] were 129 and 320°C, respectively, at a 10°C/min ramp rate. A very small amount of boric acid was volatilized in addition to water vapor when both samples were heated at 250°C. A significant amount of water vapor was adsorbed by Zn[B3O3(OH)5] · H2O from air at 25°C. However, Zn[B3O4(OH)3] adsorbed a very small amount of water under the same conditions. Both zinc borates did not have a tendency to cake during storage.
URI
http://dx.doi.org/10.1080/07373937.2012.701258
http://hdl.handle.net/11147/5227
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  • Chemical Engineering / Kimya Mühendisliği [378]
  • Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection [3276]
  • WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection [2953]


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