MINERALOGY AND PHYSICOCHEMISTRY OF SMECTITES SATURATED WITH INORGANIC AND ORGANIC CATIONS

スポンサーリンク

概要

• 論文の詳細を見る

• The mineralogical and physicochemical characteristics of various types of modified smectites exchanged with inorganic (Ca and Na) and organic cations such as Hexadecyltrimethylammonium (HDTMA), Benzyldimethyltetradecylammonium (BDTDA), and Cetylpyridinium (CP) by the ionic exchange reaction were investigated for the suggestion of new industrial application. The smectites satutated with inorganic cations (Ca and Na) show quite different mineralogical and chemical properties in basal spacing (d_<001>), pH, viscosity, swelling and flocculation and dispersion behaviors according to interlayer cation types. Confirmed factors controlling mineralogical and chemical properties of smectite are layer charge and interlayer cation type of smectite as well as smectite (montmorillonite) content. Inorganic satutared smectites show an the excellent adsorption of heavy metals such as Cu, Pb, and Cd, but are less efficient and unstable for the adsorption of actinides (U and Th) and lanthanide elements (Ce and Eu). HDTMA-, BDTDA-, and CP-exchanged organo-smectites show the strong interlayer expansion to 40.1Å, 30.8Å and 40.9Å, respectively when 400% CEC equivalent amount is reacted. Their intercalation structures are similar to double layered paraffin complexes (Deng and Dixon, 2002). Three kinds of organo-smectites begin to decompose at about 250℃ and end at 400℃. Considering all the investigated results, the interlayer cation type of natural smectites is very important mineralogical characteristics for the industrial utilization. CP exchanged organic-smectite of the investigated organo-smectites is the most economic and efficient organo-smectite in the viewpoint of price of chemicals, adsorption capacity, adsorption behavior, and stability for the new industrial application.

• 日本粘土学会の論文

著者

• Song Min-sub

  Division Of Bentonite Supply And Production Development Sud Chemie Korea Co. Ltd.

• KOH Sang-Mo

  Geology Division, Korea Institute of Geology, Mining and Materials

• Koh Sang-mo

  Geology And Geoinformation Division Korea Institute Of Geoscience And Mineral Resources (kigam)

関連論文

• 韓国南東部,密陽ろう石鉱床の地質と熱水変質作用
• 韓国南部に分布する熱水性粘土鉱床の地質学的・地球化学的性質
• MINERALOGY AND PHYSICOCHEMISTRY OF SMECTITES SATURATED WITH INORGANIC AND ORGANIC CATIONS
• The geochemical behavior of altered igneous rocks in the Tertiary Gampo Basin, Kyongsang Province, South Korea

スポンサーリンク