Surface Characterization of Ni-Mg-Al and Co-Mg-Al Hydrotalcites Investigated by Inverse Gas Chromatography

被引:0
|
作者
Sun, Zhiyin [1 ]
Xia, Guanghua [2 ,4 ]
Tang, Wenyuan [1 ]
Wang, Wenchu [3 ]
机构
[1] Taizhou Univ, Taizhou 318000, Peoples R China
[2] Zhejiang Univ Technol, Hangzhou 310014, Zhejiang, Peoples R China
[3] Taizhou Municipal Bur Forestry, Taizhou 318000, Peoples R China
[4] Taizhou Pollut Control & Engn Technol Ctr, Taizhou 318000, Peoples R China
来源
关键词
Inverse gas chromatography (IGC); Hydrotalcites; Surface characterization; LAYERED DOUBLE HYDROXIDES; PRECURSORS; COMPOUND;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Carbonate pillared hydrotalcite-like compounds (NixMg3-xAl-LDHs and CoxMg3-xAl-LDHs) with different molar ratios were synthesized through co-precipitation, the samples were characterized by XRD, FTIR and Inverse gas chromatography (IGC) techniques. The surface properties were compared and verified by computer simulation. The results indicated that with the increasing of Ni2+ in (NiMg3-xAl)-Mg-x-LDHs, the surface adsorption free energy and the dispersive component of the surface energy decreased, while the stability increased gradually, which was contrary to the Co2+ in CoxMg3-xAl-LDHs. Besides, the surface free energy of Ni-Mg-Al hydrotalcites was smaller than Co-Mg-Al hydrotalicites when they were in the same molar ratio, and the stability of the former was stronger than the latter.
引用
收藏
页码:676 / 681
页数:6
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