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Light FCC gasoline olefin oligomerization over a magnetic NiSo 4 /γ‐Al 2 o 3 catalyst in a magnetically stabilized bed
Author(s) -
Peng Ying,
Dong Minghui,
Meng Xiangkun,
Zong Baoning,
Zhang Jinli
Publication year - 2009
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.11712
Subject(s) - gasoline , catalysis , space velocity , diesel fuel , olefin fiber , cetane number , fluidized bed , distillation , magnetization , chemistry , dispersion (optics) , raw material , saturation (graph theory) , chemical engineering , materials science , analytical chemistry (journal) , organic chemistry , magnetic field , biodiesel , physics , quantum mechanics , optics , selectivity , engineering , mathematics , combinatorics
Magnetic NiSO 4 /γ‐Al 2 O 3 catalysts were prepared by impregnating NiSO 4 solutions onto the γ‐Al 2 O 3 support containing a magnetic material of Fe 3 O 4 . Characterization by XRD, NH 3 ‐TPD, and thermal analysis showed that the magnetic NiSO 4 /γ‐Al 2 O 3 catalyst with a nickel content of 7.0% by weight had a monolayer dispersion of NiSO 4 and the largest number of moderate strength acid sites, and a high specific saturation magnetization. The magnetic catalyst was evaluated for light FCC gasoline olefin oligomerization in both fixed‐bed and magnetically stabilized bed (MSB) reactors. Comparing with that in the fixed‐bed reactor, the optimal reaction temperature in the MSB lowered to 443 K, and its space velocity ranged broadly from 2.0 to 6.0 h −1 . The sulfur‐free diesel distillate produced by operation of the MSB for 100 h had higher cetane number and good low‐temperature flow property, which illuminates a promising application of the MSB to manufacture clean diesel fuels with high productivity and flexibility. © 2009 American Institute of Chemical Engineers AIChE J, 2009