Abstract
Hydrocracking is an industrial refinery process which is widely used to convert vacuum gas oil (VGO) to gasoline 1–3. In addition, there are process variants which convert a variety of other feedstocks, including residues or waxy distillates, to produce valuable hydrocarbon fuels, such as middle distillates or teamcracker feedstocks 4–6. To a large extent, this process versatility has its origin in the availability of a broad spectrum of hydrocracking catalysts, tailored for specific purposes. Usually, these catalysts consist of an acidic carrier loaded with a hydrogenation/dehydrogenation component, in other words they are bifunctional. Typical acidic components are zeolites, amorphous silica- alumina and alumina. Typical hydrogenation components include palladium and platinum, or non-noble metals such as cobalt, nickel, molybdenum and tungsten 2. The latter metals are usually in a sulfided form.
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Weitkamp, J., Ernst, S. (1990). Factors Influencing the Selectivity of Hydrocracking in Zeolites. In: Barthomeuf, D., Derouane, E.G., Hölderich, W. (eds) Guidelines for Mastering the Properties of Molecular Sieves. NATO ASI Series, vol 221. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5787-2_20
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