On the Contributions of Feed Components
to Hydrotreatment Catalyst Coking

M. A. Lur’e, L. N. Storozheva, and I. Z. Kurets

Institute of Coal and Petrochemical Synthesis, Irkutsk State University, Irkutsk, 664033 Russia

Received February 9, 2000

Abstract—The coking ability of some hydrocarbons (benzene, n-heptane, styrene, methylnaphthalene, durene,
and phenanthrene) and heterocyclic compounds (thiophene and indole) under the conditions of hydrotreatment
of feed is estimated for an Al–Co–Mo catalyst. The method of isotopic labels is used to determine the contri-
butions of the components of binary mixtures to the formation of coke on the catalyst surface. These contribu-
tions do not coincide with the values of coking ability found for individual compounds.

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