Affiliation:
1. College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications Jinan University Guangzhou Guangdong 510632 P. R. China
Abstract
AbstractThe development of energy‐saving technology for the efficient separation of olefin and paraffin is highly important for the chemical industry. Herein, we report a self‐assembled Fe4L6 capsule containing a hydrophobic cavity, which can be used to encapsulate and separate propylene/propane. The successful encapsulation of propylene and propane by the Fe4L6 cage in a water solution was documented by NMR spectroscopy. The binding constants K for the Fe4L6 cage toward propylene and propane were determined to be (5.0±0.1)×103 M−1 and (2.1±0.7)×104 M−1 in D2O at 25 °C, respectively. Experiments and theoretical studies revealed that the cage exhibited multiple weak interactions with propylene and propane. The polymer‐grade propylene (>99.5 %) can be obtained from a mixture of propylene and propane by using the Fe4L6 cage as a separation material in a U‐shaped glass tube. This work provides a new strategy for the separation of olefin/paraffin.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Tianjin Municipal Science and Technology Commission
Natural Science Foundation of Guangdong Province
Fundamental Research Funds for the Central Universities
Basic and Applied Basic Research Foundation of Guangdong Province
Postdoctoral Science Foundation of Hubei Province
Subject
General Chemistry,Catalysis