The hierarchical Zr-MTW zeolites are prepared using NH 4 F and HF as mineralizing agents and structure-directed agent like Gemini-type surfactant and studied by X-ray diffraction (XRD), 29 Si magic angle spinning nuclear magnetic resonance ( 29 Si MAS NMR), Fourier transform infrared (FTIR) spectroscopy with pyridine, 2,6-di-tert-butylpyridine and CD 3 CN as probe molecules. Structural characteristics and acid-base properties of the zeolites depend on concentration of fluorine precursor in the reaction medium (a ratio of Si/F). The hierarchical Zr-MTW zeolites (included doped with copper) have been tested in ethanol conversion into 1,3-butadiene by Lebedev method. The symbatical dependence of 1,3-butadiene productivity with the concentration of Lewis acidic sites determined by FTIR spectroscopy of adsorbed CD 3 CN is observed. 1.3-Butadiene selectivity of 68 % with ethanol conversion of 81 % are achieved in the presence of Cu/Zr-MTW catalyst. [a] M. M. Kurmach, Dr. O. V. Larina, Dr. P. I. Kyriienko, P. S. Yaremov, Dr. O. V. Shvets, Prof. S. O. Soloviev alexshvets@ukr.net [b] Dr.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.