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Effect of Water and Aluminum Sulfate Mole Ratio on Pore Characteristics in Synthesis of AlO(OH) Nano Gel by Homogeneous Precipitation

균일침전에 의한 AlO(OH) 나노 겔 합성에서 물/황산알루미늄의 몰 비가 세공특성에 미치는 영향

  • Choe, Dong-Uk (Center of Chemical Process and Engineering, Korea Research Institute of Chemical Technology) ;
  • Park, Byung-Ki (Center of Chemical Process and Engineering, Korea Research Institute of Chemical Technology) ;
  • Lee, Jung-Min (Center of Chemical Process and Engineering, Korea Research Institute of Chemical Technology)
  • 최동욱 (한국화학연구원 화학공정연구센터) ;
  • 박병기 (한국화학연구원 화학공정연구센터) ;
  • 이정민 (한국화학연구원 화학공정연구센터)
  • Published : 2006.09.01

Abstract

AlO(OH) nano gel is used in precursor of ceramic material, coating material and catalyst. For use of these, not only physiochemical control for particle morphology, pore characteristic and peptization but also studies of synthetic method for preparation of advanced application products were required. In this study, AlO(OH) nano gel was prepared through the aging and drying process of aluminum hydroxides gel precipitated by the hydrolysis reaction of dilute NaOH solution and aluminum sulfate solution. In this process, optimum synthetic condition of AlO(OH) nano gel having excellent pore volume as studying the effect of water and aluminum sulfate mole ratio on gel precipitates has been studied. Water and aluminum sulfate mole ratio brought about numerous changes on crystal morphology, surface area, pore volume and pore size. Physiochemical properties were investigated as using XRD, TEM, TG/DTA, FT-IR, and $N_2$ BET method.

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