발간논문

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Vol.29, No.1, 88 ~ 94, 1991
Title
The Effect of h2C2O4 on the Synthesis of Al2O3 Using sol - Gel Process
이정원 J W Lee , 원창환 C W Won , 천병선 B S Chun , 오재현 J H Oh
Abstract
A new way of producing alumina from the alkoxide is reported. Aluminum oxalate is first synthesized by reactions which allow controlled precipitation. Alumina powder is obtained by subsequent thermal decomposition. 1) The addition of H₂C₂O₄, in the Boehmite Sol. was able to reduce the Geling time. 2) The first generated particles in the size of 10㎛ were agglomerated in chain type. 3) The recovery of A1₂O₃ was increased with increasing PH of solution and decreasing both the mole ratio of H₂C₂O₄/ Alkoxide and reaction temperature. 4) The grain size of the calcined products was increased with increasing PH of solution, mole ratio of H₂C₂O₄/ Alkoxide and reaction temperature, however, decreased significantly in the range of PH 1.
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