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Synthesis of magnesium oxysulfate whiskers in the presence of sodium dodecyl benzene sulfonate
Author(s) -
Sun X. T.,
Xiang L.
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.200711113
Subject(s) - whiskers , magnesium , chemistry , sulfonate , sodium , benzene , crystallization , dissolution , inorganic chemistry , sodium dodecyl sulfate , adsorption , hydrothermal synthesis , nuclear chemistry , hydrothermal circulation , chemical engineering , organic chemistry , materials science , composite material , engineering
Uniform magnesium oxysulfate (5Mg(OH) 2 ·MgSO 4 ·3H 2 O) whiskers with a length of 10‐15 µm and a diameter of 0.4‐1.0 µm were synthesized in the presence of sodium dodecyl benzene sulfonate (Na‐SO 3 ‐C 6 H 4 ‐C 12 H 25 ) at 200°C for 1 h, using MgSO 4 ·7H 2 O and NaOH as the reactants. Mg(OH) 2 precursor with poor crystallization and small crystal size was formed owing to the adsorption of sodium dodecyl benzene sulfonate on the Mg(OH) 2 surface. The quick dissolution of Mg(OH) 2 precursor in the subsequent hydrothermal reaction inhibited the occurrence of the sector‐like byproduct and promoted the formation of magnesium oxysulfate whiskers with uniform morphology. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)