Supported Co/activated carbon catalysts for the one-pot synthesis of isophorone diamine from hydroamination of isophorone nitrile
Supported Co/activated carbon (Co/AC) catalysts were prepared by the incipient wetness impregnation method and applied to the one-pot hydroamination of isophorone nitrile (IPN) into isophorone diamine (IPDA). The 20 wt% Co/AC heat-treated in N2 exhibited superior catalytic performance to the 20 wt% Co/AC heat-treated in H2, by which a maximum 90.2% yield of IPDA was achieved and it could be recycled at least four times. XRD, XPS, TEM and BET has demonstrated that the existence of the fcc form of Co as well as the smaller and more uniformly dispersed Co particles in the Co/AC catalyst heat-treated in N2 may contribute to the excellent catalytic performance.
KeywordsCarbon reduction Co/AC Hydroamination Isophorone diamine Isophorone nitrile
This research was supported by the National Natural Science Foundation of China (21878269 and 21476211) and the Natural Science Foundation of Zhejiang province (LY16B060004 and LY18B060016).
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