Home > Publications database > In situ impregnated Ni/Al$_2$O$_3$ catalysts prepared by binder jet 3D printing using nickel nitrate-containing ink |
Journal Article | PUBDB-2023-05464 |
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2023
Elsevier
Amsterdam
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Please use a persistent id in citations: doi:10.1016/j.catcom.2023.106738 doi:10.3204/PUBDB-2023-05464
Abstract: The binder jetting printing technique enables in situ impregnation of alumina using a Ni(NOl$_3$)l$_2$-containing ink (NI), facilitating omission of impregnation. NI was compared to wet impregnation (WI). Full characterization by quasi-in situ XPS, XAS and TPR revealed the presence of Ni as NiAll$_2$Ol$_4$ spinel. TPR analysis identified surface NiO and NiAl$_2$Ol$_4$ species with facilitated reduction by NI, in addition to the respective species in bulk form. Post-processing affects active site accessibility by coverage. 3D printing limited the Ni loading, but XPS revealed higher metal dispersion by NI. COl$_2$ hydrogenation confirmed active Ni/All$_2$Ol$_3$ catalysts with enhanced activity by NI.
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