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Hydrodesulfurization‐Supported Catalysts: Effect of the Preparation Method
Author(s) -
Moradi P.,
Parvari M.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000466
Subject(s) - dibenzothiophene , hydrodesulfurization , catalysis , chemistry , fourier transform infrared spectroscopy , titanium , raw material , nuclear chemistry , ammonia , desorption , inorganic chemistry , batch reactor , chemical engineering , organic chemistry , adsorption , engineering
Abstract Hydrodesulfurization (HDS) of dibenzothiophene in a batch reactor was performed at 5.5 MPa and 320 °C on CoMoS/Al 2 O 3 ‐TiO 2 using trans ‐1,2‐cyclohexanediamine‐ N,N,N′,N′ ‐tetraacetic acid (CYDTA) as a complexing agent for the preparation method. The effects of titania, concentration of CYDTA, and preparation procedure were investigated by using X‐ray diffraction, BET, Fourier transform infrared spectroscopy, and temperature‐programmed desorption of ammonia experiments. The catalyst prepared by impregnation with γ‐alumina and titanium isopropoxide as raw materials and a CYDTA/Co mole ratio of 1.2 provided an HDS activity (on a pseudo‐first‐order kinetic constant basis) value ∼3.8 times higher compared to that of a CoMo/Al 2 O 3 catalyst.