Poly(propylene imine) dendrimer (G2-PPI) terminated by nitrogen-containing triolefinic macrocycle on the periphery (G2-M) was synthesized by a nucleophilic substitution reaction. The structure and composition of G2-M were characterized by FT-IR, 1H-NMR and elemental analysis. The Rh3+ dendrimer-stabilized catalyst (G2-M(Rh3+)) was prepared by utilizing G2-M as stabilizer and analyzed by UV–Vis spectroscopy, 1H-NMR spectrometry, XPS and XRD. G2-M(Rh3+) demonstrates excellent catalytic activity and selectivity for the hydrogenation of nitrile-butadiene rubber (NBR) and styrene-butadiene rubber (SBR), and Rh residue contents for HNBR and HSBR are only 35 and 13 ppm, respectively, without any post treatment.
Research on Chemical Intermediates – Springer Journals
Published: Dec 27, 2016
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