UPTAKE OF ANIONIC DYE BY LAYERED DOUBLE HYDROXIDE DISPERSED TO SILICEOUS POROUS SUBSTANCES
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概要
- 論文の詳細を見る
Layered double hydroxides (LDHs) arc the well known class of lamellar compounds with anion exchange ability. In this study, Mg-Al-Cl LDH was complexed to siliceous porous carriers in order to develop a practical adsorbent for anionic dyes. First, the carrier granule such as synthetic silica gel or natural cristobalite rock was added into the mixed aqueous solution of MgCl_2 and AlCl_3 to impregnate both metal ions in the pores of the carrier and then the resulting suspension was poured slowly to a NaOH solution at 60℃ and pH 10 with agitation. A large portion of the LDH, Mg_<1-x>Al_x(OH)_2Cl_x・yH_2O (x=0.21〜0.22, y=0.59〜0.78), was found to form in the pores of the carrier. From the anion exchange experiment using Orange II, the composite materials exhibited the high exchange ability and the ability based on LDH unit weight became as follows: LDH/silica gel (pore size 70Å) > LDH/cristobalite rock (pore size 198Å) > LDH. Thus the more LDH was dispersed finely to the carrier, the more exchange ability for anionic dye was enhanced.
- 日本粘土学会の論文
- 1999-11-01
著者
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NARITA EIICHI
Department of Frontier Materials and Function Engineering, Graduate School of Engineering, Iwate Uni
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Narita Eiichi
Department Of Applied Chemistry And Molecular Science Faculty Of Engineering Iwate University
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OGASAWARA WATARU
Department of Chemical Engineering, Faculty of Engineering, Iwate University
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YAMAGISHI TOSHIHIDE
Department of Chemical and Biological Engineering, Hachinohe National College of Technology
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Ogasawara Wataru
Department Of Applied Chemistry And Molecular Science Faculty Of Engineering Iwate University
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Yamagishi T
Department Of Chemical And Biological Engineering Hachinohe National College Of Technology
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Yamagishi Toshihide
Department Of Chemical And Biological Engineering Hachinohe National College Of Technology
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