Synthesis of Zeolitic Imidazolate Framework-14 from Zinc Chloride and its Application as a Catalyst for the Synthesis of 1-Methoxy-2-Propanol
摘要
Zeolitic Imidazolate Framework-14 (ZIF-14) was successfully synthesized for the first time from zinc chloride with high yield in an environmentally friendly solvent at room temperature. The effects of precursors, solvents, additives, reaction time, and temperature were systematically investigated. A scalable synthesis process for ZIF-14 was also developed, demonstrating good reproducibility. The synthesized ZIF-14 was characterized using x-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), differential thermal analysis (DTA), thermal gravimetric analysis (TGA), and nitrogen adsorption–desorption isotherms methods. The results confirmed that ZIF-14 synthesized under optimal conditions exhibited a specific surface area (BET) of 830 m2/g, thermal stability up to 300 °C, a particle size of 6.5 µm, and a yield of 74.0%. The synthesized ZIF-14 was employed as a catalyst for the synthesis of 1-Methoxy-2-propanol (1-MP) from Propylene Oxide (PO) and Methanol (CH3OH), yielding excellent results. The PO conversion reached 100%, and the 1-MP selectivity was 98.6% after 6 h at 110 °C.