Abstract
Publisher Summary This chapter presents model hydrocracking catalysts combining nickel molybdenum (NiMo) sulfide and large-pore zeolite. Ni and Mo ions are deposited into HBEA and HY zeolites, then sulfided. The solids are characterized at all preparation stages by various methods—namely, magic angle spinning-nuclear magnetic resonance (MAS-NMR), Fourier transform-infrared (FT –IR), and transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDX). The catalytic bifunctional properties are determined in the hydroconversion of benzene. With both zeolites, about half of the Ni–Mo is located in cavities and mesopores, but the internal NiMo is better sulfided with the nanocrystalline BEA zeolite. Catalyst NiMoS/BEA is much more active and slightly more selective for hydrogenation than NiMoS/Y.
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