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Kinetics of Bitumen‐Derived Gas Oil Upgrading Using a Commercial NiMo/Al 2 O 3 Catalyst
Author(s) -
Botchwey Christian,
Dalai Ajay K.,
Adjaye John
Publication year - 2004
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450820308
Subject(s) - hydrodenitrogenation , hydrodesulfurization , catalysis , boiling , kinetics , asphalt , chemistry , boiling point , activation energy , nitrogen , chemical engineering , materials science , organic chemistry , physics , quantum mechanics , engineering , composite material
Hydrotreating (HT) kinetics of Athabasca bitumen‐derived gas oil has been studied between 340 to 420°C using a commercial NiMo/γ‐Al 2 O 3 catalyst. The kinetics analyses included overall conversion of high‐boiling species into low‐boiling products, hydrodenitrogenation (HDN) of total, basic and non‐basic nitrogen compounds and hydrodesulfurization (HDS). Three temperature regimes were marked out for the kinetic analyses: low (340‐370°C), intermediate (370‐400°C) and high (400‐420°C). The mechanism for the conversion of high to low‐boiling species was observed to change from one temperature regime to the other, giving rise to different activation energies. HDS and HDN activation energies increased in the order: high < low < intermediate severity temperature regime.