| Institution: | 1. Institute of Crystalline Materials, Institute of Molecular Science, Shanxi University, Taiyuan, 030006 P. R. China;2. Institute of Crystalline Materials, Institute of Molecular Science, Shanxi University, Taiyuan, 030006 P. R. China
These authors contributed equally.;3. Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan, 030032 P. R. China;4. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China |
| Abstract: | In-situ encapsulation of tiny and well-dispersed Pd nanoparticles (Pd NPs) in zeolitic imidazolate frameworks (ZIFs) was firstly achieved using a one-pot and facile methanol-mediated growth approach, in which methanol served as both solvent and a mild reductant. The microstructure, morphology, crystallinity, porosity as well as evolution process of the catalysts were determined by TEM, XRD, N2 adsorption and UV-vis spectra. Due to the complete encapsulation of such Pd NPs combined with ultrahigh surface area and uniform microporous structure of ZIF-8, the resulting Pd@ZIF-8-60 min nanocomposite exhibited more superior catalytic activity for olefins hydrogenation with TOF of 7436 h−1 and excellent size selectivity than previously reported catalysts. Furthermore, the catalyst displays excellent recyclability for 1-octene hydrogenation and without any loss of the Pd active species. |
