Investigation of the Surface Acidity of a Bentonite Modified by Acid Activation and Thermal Treatment
Investigation of the Surface Acidity of a Bentonite Modified by Acid Activation and Thermal Treatment
复制标题
酸活化和热处理改性膨润土表面酸性的研究
DOI：
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发表时间：
2003
影响因子：
1.4
通讯作者：
Y. Sarikaya
中科院分区：
文献类型：
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作者：
T. Alemdaroǧlu;Gülcan Akkuş;M. Onal;Y. Sarikaya
采用紫外-可见分光光度法研究了正丁胺在酸活化和热处理的Kutahya/Turkey膨润土（KB）上的吸附行为。的实验数据进行了评价，由Langmuir吸附方程和表面酸中心的总数（nm/mol g 1）进行了测定。研究了酸活化KB样品的nm值随活化用H_2SO_4质量分数（10%~ 70%）的变化及其与表面积（A）和孔容（V）随H_2SO_4质量分数的变化的相关性。研究了热处理KB样品的nm值随热处理温度（200 C-1300 C）的变化及其与A和V随热处理温度的变化的相关性，并对结果进行了讨论。
The adsorption of n-butylamine from its solution in cyclohexane on acid-activated and thermally treated Kutahya/Turkey bentonite (KB) samples was followed using a UV-VIS spectrophotometric method. The experimental data were evaluated by the Langmuir adsorption equation and the total number of surface acid centers (nm/mol g 1 ) was determined. The variation in nm values as a function of the mass percent of H2SO4 used in activation (10% -70% ) and its correlation with variations in surface area (A) and pore volume (V) as a function of the mass percent of H2SO4 were investigated for acid- activated KB samples. The variation in nm values as a function of thermal treatment temperature (200 C-1300 C) and its correlation with variations in A and V as a function of thermal treatment temperature were investigated for thermally treated KB samples and the results are discussed.