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황산암모늄에 의한 TiO2의 황산화반응

Reaction of Titanium Dioxide with Ammonium Sulfate

HWAHAK KONGHAK, April 1989, 27(2), 176-182(7), NONE
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Abstract

황산암모늄을 황산화제로 한 TiO2의 황산화반응에 대해 연구하였다. 본 실험에서 이들 반응은 batch-boat system에서 수행되었으며 반응변수로서 반응온도, 반응시간, 황산암모늄의 양, carrier gas 질소의 유량 및 TiO2의 입도 등을 선정하여 이들이 TiO2의 황산반응에 미치는 영향을 조사하였다. 실험결과 본 황산화반응의 적당한 반응조건은 반응온도 375℃, 반응시간 2h, TiO2에 대한 황산암모늄의 mole ratio 9.0, 질소가스의 유량 30㎤/min(반응관 : ID=2.8cm, L=100cm), 시료 TiO2 의 입도 -140mesh였으며 이 조건하에서 TiO2의 98.61%가 Ammonium Titanyl Sulfate[(NH4)2 TiO(SO4)2]로 전환되었다.
The reactions of TiO2 with(NH4)2SO4 were studied. These reactions were carried out in the batch-boat system under nitrogen atmosphere with such variables reaction temperature, reaction time, mole ratio of(NH4)2SO4 to TiO2, flow rate of carrier gas(N2) and particle size of TiO2. The proper conditions for the reaction were as follows; reaction temperature 375℃, reaction time 2h, mole ratio of (NH4)2SO4 to TiO2 9.0, N2 gas flowrate 30cm3/min(reactor size:ID=2.8cm, L=100cm)and particle size of TiO2-140mesh. Under these conditions, conversion TiO2 to Ammonium Titanyl Sulfate[(NH4)2TiO(SO4)2]was 98.61%.

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