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Synthesis and Characterization of Al-Cr-Pillared Montmorillonite with High Thermal Stability and Adsorption Capacity* 被引量:1

Synthesis and Characterization of Al-Cr-Pillared Montmorillonite with High Thermal Stability and Adsorption Capacity
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摘要 Al-Cr-pillared montmorillonite was synthesized by using bentonite and Al-Cr pillaring solutions as starting materials.The basal spacing and specific surface areas of the materials were significantly increased relative to those of untreated clays.When the Al/Cr molar ratio(R) was 0.10,the d(001) value and specific surface area of pillared montmorillonite were 1.9194 nm and 165.7 m2 g -1,respectively.Thermal stability of the materials was determined using calcined tests and X-ray diffraction (XRD) analysis.The materials formed at different R(0.05;0.10;0.15;0.25) exhibit a high thermal stability at 300℃,especially at initial R=0.10,the basal interlayer spacing of materials is stabilized at 1.7313 nm after calcined at 500℃ for 2 h.Adsorption behavior of the materials was studied by adsorption experiments.The results show that the Al-Cr-pillared montmorillonites exhibit much stronger adsorption capacity on Cr 6+ in aqueous solution than untreated clays do. Al-Cr-pillared montmorillonite was synthesized by using bentonite and Al-Cr pillaring solutions as starting materials.The basal spacing and specific surface areas of the materials were significantly increased relative to those of untreated clays.When the Al/Cr molar ratio(R) was 0.10,the d(001) value and specific surface area of pillared montmorillonite were 1.9194 nm and 165.7 m2 g -1,respectively.Thermal stability of the materials was determined using calcined tests and X-ray diffraction (XRD) analysis.The materials formed at different R(0.05;0.10;0.15;0.25) exhibit a high thermal stability at 300℃,especially at initial R=0.10,the basal interlayer spacing of materials is stabilized at 1.7313 nm after calcined at 500℃ for 2 h.Adsorption behavior of the materials was studied by adsorption experiments.The results show that the Al-Cr-pillared montmorillonites exhibit much stronger adsorption capacity on Cr 6+ in aqueous solution than untreated clays do.
作者 曹明礼
出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2004年第1期51-53,共3页 武汉理工大学学报(材料科学英文版)
基金 SupportedbySpecializedResearchFundfortheDoctoralProgramofHigherEducation (No.2 0 0 2 0 4 970 0 5 )andforUniversityKeyTeacherbytheMinistryofEducation,China
关键词 Al-Cr-pillared montmorillonite pillaring solution SYNTHESIS CHARACTERIZATION ADSORPTION Al-Cr-pillared montmorillonite pillaring solution synthesis characterization adsorption
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参考文献1

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同被引文献20

  • 1赵东源,杨亚书,辛勤,张慧,郭燮贤.混合金属络合物羟基镍铝交联蒙托土的表面酸性及催化性能[J].Chinese Journal of Catalysis,1993,14(4):287-293. 被引量:22
  • 2宋晓岚,江楠,曲鹏,何希,杨海平,邱冠周.介孔CeO_2的化学沉淀法合成及表征[J].中国有色金属学报,2006,16(12):2126-2131. 被引量:8
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