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Two groups of catalysts containing Ni and/or Co metals and MgAlO x as support material were made using coprecipitation and incipient wetness impregnation methods, respectively. The mechanism of metal particle growth during reduction of the monometallic Ni or Co and bimetallic Ni–Co catalysts was studied using X-ray absorption near edge spectroscopy (XANES) and extended X-ray absorption fine...
The diminishing quality of oil feedstocks coupled with increasingly more stringent environmental regulations limiting the content of sulfur in transportation fuels have given rise to a need for improved hydroprocessing technology. This review begins with a summary of the major improvements in hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) catalysts and processes that have been reported...
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