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Mechanically strong carbon nanofiber spheres of millimeter size were grown from methane over a preshaped Ni/SiO 2 catalyst. Mg–Al hydrotalcites (HTs) were precipitated in the porous carbon bodies by consecutive impregnation of the reactants and an aging step. In a single sequence, HT loadings as high as 16 wt% were obtained. HTs turned out to be present as platelets with a lateral size of...
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