Medium effect on dielectric relaxation behaviors of 4A zeolite bulk dispersion system

Wei Zhou Di-Wei Zhang Dong-Sheng Bai Shu-Jing Li Xin-Rui Wang

Citation:  Wei Zhou, Di-Wei Zhang, Dong-Sheng Bai, Shu-Jing Li, Xin-Rui Wang. Medium effect on dielectric relaxation behaviors of 4A zeolite bulk dispersion system[J]. Chinese Chemical Letters, 2015, 26(10): 1255-1258. doi: 10.1016/j.cclet.2015.05.046 shu

Medium effect on dielectric relaxation behaviors of 4A zeolite bulk dispersion system

    通讯作者: Wei Zhou,
  • 基金项目:

    This work was supported by Beijing Natural Science Foundation (Nos. 2143040, 2144047) (Nos. 2143040, 2144047)

    Development of High-Caliber Talents Project of Beijing Municipal Institutions (No. CIT & TCD 201504009) (No. CIT & TCD 201504009)

    National Natural Science Foundation of China (No. 21301012). (No. 21301012)

摘要: Dielectric spectra of 4A zeolite particles bulked in deionized water (4A/W) or cyclohexane (4A/C) were measured respectively under different temperatures, and two dielectric relaxations were found in both of 4A/W and 4A/C. Because of existence of water molecules in pores, both low and high frequency relaxation times (τLFR and τHFR) of 4A/Wdecreasedmore sharply than 4A/C with increasing temperature. According to the temperature dependence of τLFR and τHFR, the activation energies of Na+ interacting with framework under hydrated and dehydrated environments were calculated respectively, and the original properties of Na+ in dehydrated zeolite were obtained by analyzing the dielectric properties of 4A/C. Furthermore, a transient state of Na+ motion with temperature was found in 4A/C system.

English

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  • 发布日期:  2015-06-03
  • 收稿日期:  2015-04-07
  • 网络出版日期:  2015-05-19
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