Res. Chem. Intermed.
, Vol. 34, Nos 8–9, pp. 693–701 (2008)
Koninklijke Brill NV, Leiden, 2008.
Also available online - www.brill.nl/rci
Aromatic reduction of residue oil of naphtha cracking over
bimetallic Pt–Pd catalysts supported on mesoporous
KWANG-EUN JEONG and SOON-YONG JEONG
New Chemistry Division, Korea Research Institute of Chemical Technology, 100 Jang-dong,
Yuseong-gu, Daejeon 305-600, South Korea
Received 24 July 2007; accepted 29 August 2007
Abstract—An Al-containing mesoporous molecular sieve (Al-MMS) was prepared by hydrolysis of
-TPD results suggest that the acidity of Al-MMS was less than
that of dealuminated zeolite Y. The potential use of mesoporous molecular sieve as a new support
material for dearomatization of residue oil of naphtha cracking was described. In case of C
PGO feed, Pt–Pd/Al-MMS showed a higher activity than Pt–Pd/dealuminated zeolite Y catalyst. This
is ascribed to its better accessibility of bulky molecules, and much less cracking activity due to mild
acidity, indicating high yield of liquid. Thus, Pt–Pd/Al-MMS catalyst can be applied effectively to the
hydrogenation of aromatic compounds in the residue oil of a commercial naphtha cracker.
Keywords: Mesoporous molecular sieves; naphtha residue oil; hydrogenation; aromatics; platinum;
Hydrotreatment of the oil fraction is one of the most important catalytic processes
in the petroleum reﬁning technology, because it allows to produce clean fuels
well-adapted to the market [1, 2]. Particularly, new diesel fuel speciﬁcations
will include a limit of reduction of sulfur level below 30 ppmw and of aromatics
content, while maintaining the cetane number at a minimum value of 45. The
presence of a high content of aromatics in diesel oil lowers fuel quality, as shown
by cetane number and coloring, and also enhances the hazardous emissions from
diesel engines [3, 4].
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