, though the lowest acidity among the catalysts. The excellent
hydrogenation activity of this catalyst may attribute to its highest dispersed active nickel and its large pore volume and surface area. The catalyst
modified with NH4F and H3BO3 showed a similar performance to the catalyst modified with H3BO3 only. The incorporation of boron led to a
greater increase in hydrogenation activity than the addition of fluorine which presents a detrimental effect on the HDN reaction.
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