3 years ago

Hydrogenation of paranitrotoluene to p-methyl-cyclohexylamine catalyzed by PEG modified Ru/NaY catalysts

Hydrogenation of paranitrotoluene to p-methyl-cyclohexylamine catalyzed by PEG modified Ru/NaY catalysts
A series of Ru/NaY catalysts modified by a different amount of polyethylene glycol (PEG) were prepared using the impregnation-precipitation method and tested towards the reaction of paranitrotoluene (PNT) hydrogenation to p-methyl-cyclohexylamine (PMC). The various characterization techniques applied suggested that a suitable amount of PEG was responsible to reduce Ru nanoparticles size and enhance at the same time metallic Ru loading on the catalyst surface. A Ru-PEG7.5/NaY catalyst modified by 7.5mL PEG showed a higher PNT conversion (>99.9%) and reaction selectivity to PMC (95.2%) at 160°C for 35min compared to other Ru catalysts of different Ru/PEG molar ratio. The reusability of the Ru-PEG7.5/NaY catalyst was also investigated showing only slight deactivation due to Ru agglomeration.

Publisher URL: www.sciencedirect.com/science

DOI: S1566736717304466

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