Liquid adsorption of n-octane/octanol/ethanol on SBA-16 silica.
Liquid adsorption of n-octane/octanol/ethanol on SBA-16 silica.
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DOI：
10.1016/j.jcis.2007.06.029
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发表时间：
2007-11
影响因子：
9.9
通讯作者：
R. Rockmann;G. Kalies
中科院分区：
文献类型：
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作者：
R. Rockmann;G. Kalies
根据文献报道的方法合成了立方Im3¯m对称的SBA-16二氧化硅样品，并用氮吸附和x射线衍射对其进行了表征。研究了正辛烷(1)/辛醇(2)、正辛烷(1)/乙醇(3)和正辛烷(2)/乙醇(3)二元液体混合物在SBA-16上25℃全浓度范围内的吸附行为。发现了倒u型等温线，并用数学函数来描述。通过对液/固界面自由润湿能的一致性测试，对实验二元数据进行了验证。利用二元数据预测了正辛烷(1)/辛醇(2)/乙醇(3)在25℃下的三元吸附过量等温线。这项工作提出了第一个完整和一致的表格集二元液体吸附数据，用于创建有序介孔二氧化硅的三元数据。
SBA-16 silica samples with cubic Im3¯m symmetry were synthesized according to methods reported in literature and characterized by nitrogen adsorption and X-ray diffraction. The adsorption behavior of the n-octane(1)/octanol(2), n-octane(1)/ethanol(3), and octanol(2)/ethanol(3) binary liquid mixtures on SBA-16 was studied over the whole concentration range at 25 °C. Inverted U-shape isotherms were found and described by mathematical functions. The experimental binary data were verified by using a consistency test for the specific free wetting energies on the liquid/solid interface. The ternary adsorption excess isotherms of n-octane(1)/octanol(2)/ethanol(3) at 25 °C were predicted from the binary data. The work presents the first complete and consistent tabular set of binary liquid adsorption data for creating ternary data on ordered mesoporous silica.