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学科主题: Chemistry ; Materials Science ; Mineralogy
题名: preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study
作者: Wang Lan; Chen Zhaoyang; Wang Xu; Yan Shiyou; Wang Junhua; Fan Yanwei
通讯作者: Chen, ZY
关键词: Organo-vermiculite ; Interlayer space ; Alkylammonium ; Orthogonal experimental design ; Ball milling
刊名: Applied Clay Science
发表日期: 2011
DOI: 10.1016/j.clay.2010.11.023
卷: 51, 期:1-2, 页:151-157
资助者: Western Light Foundation of Chinese Academy of Sciences;Program of High Technology Research and Development Plan in Xinjiang Autonomous Region;Program of Science and Technology of Urumqi
摘要: The intercalation of alkylammonium ions into vermiculite (VMT) to improve the interior structure of VMT has evolved into a subject of tremendous interest. The Na+-exchanged vermiculite (Na-VMT) prepared from the VMT in Xinjiang area (China), served as a host for intercalation with cetyl-trimethylammonium (CTA+) to prepare organo-vermiculites (OVMTs) by a typical hot solution method (OVMT (H)) and a novel ball milling method (OVMT (M)) under the optimized conditions confirmed by orthogonal experimental designs. The two methods employed thermal energy and mechanical energy respectively to drive the CTA+ cations into the interlayer space of layers and to carry out the cation exchange reaction. From X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM) images and thermogravimetric analysis (TGA) results, the Na-VMTs were structurally modified, and the OVMTs showed remarkably large interlayer spaces, in which alkyl chains built paraffin-type bilayer arrangements nearly perpendicular to silicate layers. However, hot solution and ball milling methods showed different behaviors. The interlayer distance of the OVMT (M) (4.283nm) was larger than that of the OVMT (H) (4.052nm), indicating that the tilting angle of alkyl chains in the former was larger than that in the latter. Additionally, the hot solution treatment retained the morphology of the layers and reduced the surface energy of the VMT, whereas the ball milling method caused layers to twist and led to high residual surface energy on the particles, as well as a higher content of organic compounds and lower thermal stability for the product.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/1432
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Green Chem & Organ Synth, Urumqi 830011, Peoples R China;Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China

Recommended Citation:
Wang Lan,Chen Zhaoyang,Wang Xu,et al. preparations of organo-vermiculite with large interlayer space by hot solution and ball milling methods: a comparative study[J]. Applied Clay Science,2011,51(1-2):151-157.
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