Improving olefin purification using metal organic frameworks with open metal sites
A. Luna-Triguero (University Pablo de Olavide)
José Manuel Vicent Luna (University Pablo de Olavide)
A Poursaeidesfahani (TU Delft - Engineering Thermodynamics)
T. J.H. Vlugt (TU Delft - Engineering Thermodynamics)
R. Sánchez-De-Armas (University Pablo de Olavide)
Paula Gomez-Alvarez (University Pablo de Olavide, Universidad de Huelva)
Sofia Calero (University Pablo de Olavide)
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Abstract
The separation and purification of light hydrocarbons is challenging in the industry. Recently, a ZJNU-30 metal-organic framework (MOF) has been found to have the potential for adsorption-based separation of olefins and diolefins with four carbon atoms [H. M. Liu et al. Chem. - Eur. J. 2016, 22, 14988-14997]. Our study corroborates this finding but reveals Fe-MOF-74 as a more efficient candidate for the separation because of the open metal sites. We performed adsorption-based separation, transient breakthrough curves, and density functional theory calculations. This combination of techniques provides an extensive understanding of the studied system. Using this MOF, we propose a separation scheme to obtain a high-purity product.