Ja Hun Kwak

TL;DR: A combination of ultrahigh magnetic field, solid-state magic-angle spinning nuclear magnetic resonance spectroscopy, and high-angle annular dark-field scanning transmission electron microscopy coupled with density functional theory calculations is used to reveal the nature of anchoring sites of a catalytically active phase of platinum on the surface of a γ-Al2O3 catalyst support material.

TL;DR: In this paper, the performance of a Cu ion-exchanged SSZ-13 zeolite in the selective catalytic reduction (SCR) of NO x with NH 3 was observed, in comparison with Cu-beta and ZSM-5 zeolites.

TL;DR: In this paper, a Pt-FGS was used for oxygen reduction in functionalized graphene sheets (FGSs) by thermal expansion of graphite oxide and Pt nanoparticles with average diameter 2 nm were uniformly loaded on FGSs by impregnation methods.

TL;DR: It is shown that isolated palladium atoms can be catalytically active on industrially relevant γ-alumina supports, and the addition of lanthanum oxide to the alumina, long known for its ability to improve alumina stability, is found to also help in the stabilization of isolated Palladium atoms.

TL;DR: In this article, the microfibril bundles in the macrofibrils were exposed by removing amorphous cellulose on and near the surface of the macro-fibers.