Role of Chlorine in β-FeOOH on Its Thermal Change and Reactivity to Sulfur Dioxide

スポンサーリンク

概要

• 論文の詳細を見る

• The state of Cl in β-ferric oxide hydroxide (β-FeOOH) was examined by X-ray diffraction, IR absorption, chemical analysis, DTA, and TGA. The adsorption of SO<SUB>2</SUB> was determined as a measure of the surface activity. No influence of Cl contained in the crystal appeared in the X-ray diffraction patterns and surface area. The absorption bands at 640 and 840 cm<SUP>−1</SUP> in IR spectra showing the deformation vibration of OH group diminished with the decrease of Cl content. It was shown that the path for β-FeOOH to transform into α-Fe<SUB>2</SUB>O<SUB>3</SUB> by heating differentiates from the sample including more than 11.5% Cl/Fe to one including less than 11.5% Cl/Fe. This critical Cl content is equal to the amount of Cl when Cl fills up the characteristic tunnels existing in the β-FeOOH crystal. Cl in β-FeOOH interferes both its transformation into α-Fe<SUB>2</SUB>O<SUB>3</SUB> and the recrystallization of resultant α-Fe<SUB>2</SUB>O<SUB>3</SUB>. These effects were explained by the stabilization of the β-FeOOH structure by Cl in tunnels and the bonding between Cl and Fe. The amount of chemisorbed SO<SUB>2</SUB> was lowered by Cl which was adsorbed on outer surfaces.

• 公益社団法人 日本化学会の論文

著者

• Ishikawa Tatsuo

  Department Of Aeronautics And Astronautics Kyoto University

• Inouye Katsuya

  Department of Chemistry, Faculty of Science, Chiba University

関連論文

• アカパンカビの温度感受性突然変異体における高分子合成と分生子発芽〔英文〕
• Effects of far-infrared radiation (FIR) on osteoblast-like cells (MC3T3-E1) and bone formation(Oral Session,The 16th Annual Meeting of the Society for Hard Tissue Regenerative Biology in Matsumoto Dental University)
• Limit State Design For Prestressed Concrete Bridge Under B-Load
• Synthesis and adsorption property of zinc rust of zinc hydroxynitrate
• Numerical Study of SOFC Based on Electrolyte with Mixed Ionic and Electronic Conductivity
• Influence of Packing Materials on Concrete Strength
• Dielectric Behavior of Water Molecules Adsorbed on Iron(III) Oxide Hydroxides
• The Effect of Copper(II) on the Formation and Thermal Change of Synthetic β-FeOOH
• The Structural Transformation of Ferric Oxyhydroxides and Their Activity to Sulfur Dioxide
• Adsorption of water on FeOOH as studied by electrical conductivity measurements.
• Role of Chlorine in β-FeOOH on Its Thermal Change and Reactivity to Sulfur Dioxide

もっと見る 閉じる

スポンサーリンク