Abstract
Studies have been carried out aimed at recognizing β-cyclodextrin as including sulfur compounds by competitive inclusion using phenolphthalein as a spectral probe. 1-Propanethiol was chosen as a model sulfur compound and the obtained results indicated that β-CD could include 1-propanethiol and remove it from light oil. The time and the temperature of inclusion and the mass content of β-CD in the solution all had influences on the removal of 1-propanethiol. The size/shape fit plays a crucial role in the inclusion process, and hydrogen bonding could enhance the inclusion stability. Two possible inclusion mechanism models were also put forward. This work lays the foundation for the further research on desulfurization by molecular recognition with β-CD.
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