Ziegler-Natta catalysis I. Mechanism of polymerization of $alpha;-olefins with Ziegler-Natta catalysts*1

Possible importance of a “metal-surface selection rule” in the interpretation of the infrared spectra of molecules adsorbed on particulate metals; infrared spectra from ethylene chemisorbed on silica-supported metal catalysts

Complexes of lanthanide (III) ions with nitrogen donor ligands

The vibrational spectra of several platinum-ethylene complexes: K[PtCl3(C2H4)]·H2O (Zeise's salt), K[PtCl3(C2D4)] · H2O and [PtCl2(C2H4)]2

Carbon nanosheet (CNS)−Pd nanosized particle (NP) composites were synthesized by using graphite oxide (GO) and bis(ethylenediamine)palladium(II) (Pd(en)22+) as the precursors, and their structure and adsorption properties were examined. It was found that the Pd(en)22+ complex ions can be intercalated into GO layers highly efficiently to form a layered structure containing a large amount of Pd (∼12 wt %). By the subsequent chemical reduction, Pd NPs (2−6 nm in size) are well dispersed between CNS to form a CNS−Pd NP composite and serve as spacers to increase the porosity of the composite. Hydrogen adsorption results demonstrate that both Pd NPs and CNS play important roles in hydrogen adsorption, particularly at a lower temperature and for CNS with deficient sites, which bring about a H2 adsorption greater than those on other Pd-loaded nanocarbon materials reported so far. The unique composite nanostructure having large contents of Pd NPs (20−25 wt %) stabilized by CNSs is hopeful to be applied to the fiel...

D.B. Powell

Papers

The assignment of infra-red absorption bands to fundamental vibrations in some metal-ethylenediamine complexes

Infrared spectra and vibrational frequencies of co-ordinated ethylene