Abstract
MgO-supported Ni catalysts were selectively catalysed by the hydrogenation of benzonitrile to benzylamine in continuous flow at atmospheric pressure without any additives. Ni/MgO catalysts were synthesized by co-precipitation method with NaOH as the precipitating agent. All the synthesized catalysts were characterized by various physiochemical techniques, namely XRD, H2-TPR, BET surface area, CO2-TPD, SEM, and TEM. Among them, 10% Ni/MgO catalyst showed the best activity with 98% conversion of benzonitrile, 60% selectivity to benzylamine at 473 K. The high dispersion of Ni and strong metal support interactions with MgO are key factors for the catalytic performance. 10Ni/MgO catalyst was found to be consistent throughout the time-on-stream studies of 36 h which clearly explains the excellence of the catalytic system.
Graphic abstract
Ni/MgO catalysts are active in gas phase hydrogenation of benzonitrile to benzylamine at atmospheric pressure.
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AN thanks CSIR-New Delhi, India, for the award of fellowship.
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Nagu, A., Vasikerappa, K., Gidyonu, P. et al. Additive-free vapour-phase hydrogenation of benzonitrile over MgO-supported Ni catalysts. Res Chem Intermed 46, 2669–2681 (2020). https://doi.org/10.1007/s11164-020-04113-y
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DOI: https://doi.org/10.1007/s11164-020-04113-y