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Synthesis of rhombohedral strontium carbonate aggregates at the water/hexamethylene interface with cetyltrimethylammonium bromide
Author(s) -
Chen Long,
Shen Yuhua,
Xie Anjian,
Huang Fangzhi,
Li Shikuo,
Zhang Qingfeng
Publication year - 2008
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.200711117
Subject(s) - strontium carbonate , strontium , chemistry , bromide , carbonate , crystallinity , inorganic chemistry , crystallization , fourier transform infrared spectroscopy , mineralogy , chemical engineering , crystallography , organic chemistry , engineering
Unusual rhombohedral strontium carbonate (SrCO 3 ) aggregates have been synthesized in situ from strontium nitrate by the slow release of carbon dioxide by alkaline hydrolysis of diethyl carbonate at the water/hexamethylene interface in the presence of cetyltrimethylammonium bromide (CTAB). Transmission electron microscopy, Fourier transform infrared spectroscopy and X‐ray powder diffractometry were used to characterize the products. The results indicate that rhombohedral SrCO 3 aggregates are obtained with weaker crystallinity and sizes of several micrometers. The possible formation mechanism of the SrCO 3 aggregates at the interface is discussed, which can be interpreted by particle‐aggregation based non‐classical crystallization laws. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)