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n ‐dodecane hydroconversion over nickel supported on different mesoporous aluminosilicates
Author(s) -
Fang KeGong,
Ren Jie,
Sun YuHan
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040221106
Subject(s) - chemistry , catalysis , nickel , mesoporous material , aluminosilicate , isomerization , selectivity , dodecane , silanol , chemisorption , fourier transform infrared spectroscopy , dispersion (optics) , inorganic chemistry , mcm 41 , nuclear chemistry , chemical engineering , organic chemistry , physics , optics , engineering
Several 2.0 wt% nickel catalysts supported on nanometer bimodal mesoporous aluminosilicate (NBMAS), AlHMS and AlMCM‐41 were prepared by means of the wetness impregnation method. The characterization techniques such as Py‐FTIR and H 2 chemisorption showed that the amount of Brönsted acid sites decreased in the order of Ni/AlHMS > Ni/AlMCM‐41> Ni/NBMAS, while the nickel dispersion differed a little. In the catalytic n ‐dodecane hydroconversion, the highest conversion was obtained over Ni/NBMAS, and the lowest isomerization selectivity occurred over Ni/AIHMS. For the cracked products, the symmetrical carbon number distribution centered at C 6 was obtained on the Ni/AlMCM‐41 catalyst due to the well balanced metall/acid functions, whereas the Ni/AlHMS and Ni/NBMAS catalysts led to more C 3 ‐C 5 and C 1 +C 11 products, respectively.