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An expanded Markham and Benton approach to describe multi-component adsorption of sugars on zeolite beta
Microporous and Mesoporous Materials ( IF 5.2 ) Pub Date : 2018-07-06 , DOI: 10.1016/j.micromeso.2018.07.009
Dave Hartig , Jonas Kluitmann , Stephan Scholl

Single- and multi-component adsorption isotherms of sorbitol, fructose, and glucose on zeolite beta (Na+BEA 150) were determined in sodium phosphate buffer using batch experiments. The standard Markham and Benton approach to predict binary isotherms from single-component data significantly overestimated the loading at high concentrations of two or more compounds. Therefore, an interaction parameter was introduced to the Markham and Benton model describing mutual blocking of binding sites in binary mixtures at high concentrations. With these changes, the expanded model was able to describe the multi-component isotherms of different binary mixtures in the concentration range from zero to 100 g/L for each compound. Moreover, the interaction parameters determined from binary isotherm data were used to predict ternary isotherms and a good agreement between model and experiments was achieved.



中文翻译:

扩展的Markham和Benton方法来描述糖在β沸石上的多组分吸附

山梨糖醇,果糖和葡萄糖在β沸石上的单组分和多组分吸附等温线(Na +使用批处理实验在磷酸钠缓冲液中测定BEA 150)。从单组分数据预测二元等温线的标准Markham和Benton方法大大高估了两种或多种化合物在高浓度下的负载量。因此,将相互作用参数引入到Markham和Benton模型中,该参数描述了高浓度二元混合物中结合位点的相互阻断。通过这些更改,扩展模型能够描述每种化合物的浓度范围从零到100 g / L的不同二元混合物的多组分等温线。此外,从二元等温线数据确定的相互作用参数被用于预测三元等温线,并在模型和实验之间取得了良好的一致性。

更新日期:2018-07-06
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