γ‐Al 2 O 3 ‐Supported and Unsupported (Ni)MoS 2  for the Hydrodenitrogenation of Quinoline in the Presence of Dibenzothiophene | Zendy

Hein Jennifer | Zendy; Hrabar Ana | Zendy; Jentys Andreas | Zendy; Gutiérrez Oliver Y. | Zendy; Lercher Johannes A. | Zendy

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γ‐Al 2 O 3 ‐Supported and Unsupported (Ni)MoS 2 for the Hydrodenitrogenation of Quinoline in the Presence of Dibenzothiophene

Author(s) -

Hein Jennifer,

Hrabar Ana,

Jentys Andreas,

Gutiérrez Oliver Y.,

Lercher Johannes A.

Publication year - 2014

Publication title -

chemcatchem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.497

H-Index - 106

eISSN - 1867-3899

pISSN - 1867-3880

DOI - 10.1002/cctc.201300856

Subject(s) - dibenzothiophene , hydrodenitrogenation , hydrodesulfurization , quinoline , catalysis , molybdate , sulfidation , chemistry , sulfide , inorganic chemistry , nickel , flue gas desulfurization , organic chemistry

Supported MoS 2 /γ‐Al 2 O 3 and Ni‐MoS 2 /γ‐Al 2 O 3 as well as unsupported Ni‐MoS 2 were investigated in the hydrodenitrogenation (HDN) of quinoline in the presence of dibenzothiophene (DBT). The supported oxide catalyst precursors had a well‐dispersed amorphous polymolybdate structure that led to the formation of a highly dispersed sulfide phase. In contrast, the unsupported catalyst precursor consisted of a mixture of nickel molybdate and ammonium nickel molybdate phases that formed stacked sulfide slabs after sulfidation. On all catalysts, the reaction pathway for the removal of N in quinoline HDN mainly followed the sequence quinoline→1,2,3,4‐tetrahydroquinoline→decahydroquinoline→propylcyclohexylamine→propylcyclohexene→propylcyclohexane. The hydrodesulfurization of DBT proceeded mainly by direct desulfurization towards biphenyl. For both processes, the activity increased in the order MoS 2 /γ‐Al 2 O 3

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