Hua Chen

Publications (2)6.14 Total impact

• Article: Organophilic worm-like ruthenium nanoparticles catalysts by the modification of CTAB on montmorillonite supports.

  Limei Zhou, Xiaolong Qi, Xiaohui Jiang, Yafen Zhou, Haiyan Fu, Hua Chen
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  ABSTRACT: A supported Ru catalyst was prepared by using cetyltrimethylammonium bromide (CTAB) intercalated montmorillonite as the supporting matrix. The as-prepared Ru catalyst was subsequently characterized by XRD, XPS, N(2) sorption, TEM, and dispersibility measurement. The results showed that the Ru nanoparticles were in the modified montmorillonite interlayers, and the morphology of Ru nanoparticle was worm-like. Moreover, this supported Ru catalyst could be well dispersed in organic solvents such as toluene. The catalyst exhibited high activity and selectivity in the hydrogenation of quinoline even without stirring.
  Journal of Colloid and Interface Science 10/2012; · 3.07 Impact Factor
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  Article: Modification of montmorillonite surfaces using a novel class of cationic gemini surfactants.

  Limei Zhou, Hua Chen, Xiaohui Jiang, Fang Lu, Yafen Zhou, Wenmin Yin, Xiaoyang Ji
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  ABSTRACT: A novel class of cationic gemini surfactants were prepared and used as modifiers for sodium montmorillonite (MMT-Na). The modified montmorillonites were characterized by X-ray diffraction (XRD), thermal analysis (TG), Fourier transform infrared spectroscopy (FTIR), dispersibility measurement, and scanning electron microscopy (SEM). The results show that the surfactants have been intercalated into the montmorillonite layers successfully. XRD measurements indicate that the gemini surfactant is more effective at expanding the interlayer space of the MMT than the corresponding single chain surfactant. Moreover, the high efficiency can be obtained by lengthening the hydrophobic chains of gemini surfactants. Thermal analysis shows that there are four different molecular environments for gemini surfactants in the modified montmorillonite. The dispersibility measurement and SEM results indicate that the modified montmorillonite are more hydrophobic and prone to agglomerate in water than MMT-Na. These modified materials have the potential for removal of environment pollutants such as pesticides, phenol, etc. or being used as antimicrobial materials.
  Journal of Colloid and Interface Science 01/2009; 332(1):16-21. · 3.07 Impact Factor