Metal-organic frameworks (MOFs) attract extensive research interests as sulfides remover from fossil fuels. In our study, we applied a new strategy to tune the metal compositions and pore structures of Cu-BTC via finetuning the degree of reduction of Cu(II) to Cu(I) using several reducing agents under mild conditions. The structural evolution of MOF was characterized by using a variety of techniques, including scanning electron microscopy (SEM), energy-dispersive spectrometer (EDS), powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The relationships between the Cu-BTC structures and their adsorption affinity to organosulfur compounds (i.e. dimethyl disulfide, ethyl sulfide and 1-propanethiol) were explored. Furthermore, the adsorption mechanisms for different sulfide molecules onto Cu-BTC was revealed by using density functional theory calculation method. This study provides valuable guidance in rational design and function-oriented modification of MOF materials, and benefits to the potential applications in adsorption desulfurization based on metal−organic molecular architectures.<br/>

Modified Cu-BTC for highly-enhanced adsorption of organosulfur species

2019 Spring National Meeting

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