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Chemical Factors on the Homogeneous Precipitation of Barium Titanyl Oxalate by Dimethyl Oxalate and Their Effects on the Charateristics of Barium Titanate
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.3, pp.230-234
Ryu,
K., Huh,
W., &
Lee,
C.
(1999). Chemical Factors on the Homogeneous Precipitation of Barium Titanyl Oxalate by Dimethyl Oxalate and Their Effects on the Charateristics of Barium Titanate. Analytical Science and Technology, 12(3), 230-234.
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Abstract
Barium titanyl oxalates (BTO) has been homogeneously prepared by thermal decomposition of dimethyl oxalate (DMO) in hydrochloric solution containing <TEX>$Ba^{2+}$</TEX> and <TEX>$Ti^{4+}$</TEX>. Particles of BTO settled on the bottom of the beaker were collected at the aging time of 120 min using hydroxy propyl cellulose (HPC) as a dispersant. The reaction temperature, the concentration ratio of <TEX>$[DMO]_0/([Ba^{2+}]_0+[Ti^{4+}]_0)$</TEX> and the existence of HPC were found to influence on morphologies of BTO, chemical yields and characteristics of barium titanates formed from their precursors.
- keywords
- barium titanyl oxalate, homogeneous precipitation, dimethyl oxalate, aqueous hydrochloric acid system
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