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Activated carbon prepared from Canadian oil sands coke by CO 2 activation: I. Trends in pore development and the effect of pre‐oxidation
Author(s) -
Karimi Arash,
Thi Olivier,
Fournier Joseph,
Hill Josephine M.
Publication year - 2013
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.21774
Subject(s) - coke , oil sands , petroleum coke , chemical engineering , materials science , activated carbon , carbon fibers , metallurgy , chemistry , adsorption , composite material , organic chemistry , asphalt , composite number , engineering
Oil sands coke is a byproduct of oil sands upgrading, which potentially can be used for the production of low cost activated carbons. Activation of oil sands delayed coke was performed by partial CO 2 ‐gasification in a tubular fixed bed reactor at 900°C. Pore development during activation initially proceeded almost exclusively by micro‐pore formation, and the reaction appeared to follow a shrinking core model. Surface areas up to 646 m 2 /g were obtained, and coarser particles reached lower maximum surface areas at lower levels of burn‐off than finer particles. Pre‐oxidation in air at 270°C resulted in higher maximum surface areas.