The decrease in hydroprocessing response speed over time on stream is a sign of deactivation. In actual refineries, rising temperature counteracts a drop in activity. The characteristics of the feeds, the operating environment, and the structure of the catalysts all have a role in how much deactivation occurs. It is reasonable to expect a considerable difference between the deactivation of the catalyst during the hydroprocessing of heavy feeds and light feeds. In the case of atmospheric distillates, poisoning from N-compounds and coke deposition predominates in the catalyst deactivation process. Because they preferentially bind to active sites, the N-bases, which are found in all petroleum feeds, contribute to the catalyst's deactivation and slow down the hydrogen activation process.
Stanislaw Dzwigaj
Sorbonne University, France
Thomas J Webster
Brown University, United States
Dai Yeun Jeong
Asia Climate Change Education Center, Korea, Republic of
Sergey Suchkov
N.D. Zelinskii Institute for Organic Chemistry of the Russian Academy of Sciences, Russian Federation
Jiri Dedecek
J Heyrovsky Institute of Physical Chemistry , Czech Republic
Vladimir G Chigrinov
Hong Kong University of Science and Technology, Russian Federation
Osman Adiguzel
Firat University, Turkey
Uday Som
Shizuoka University, Japan
Rabeharitsara Andry Tahina
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