High activity and sinter-resistance of Ni@silicalite-1 catalyst for dry reforming of methane

Abstract

This paper reports a highly active and stable Ni@silicalite-1 catalyst for dry reforming of methane. In the reaction conducted at 800[Formula: see text]C, CH4/CO2=1/1 and GHSV=100,000 mL⋅g[Formula: see text]⋅h[Formula: see text] for 100 h, the Ni@silicalite-1 delivered CH4 conversions of 93% without deactivation. This superior property of the catalyst comes from the special structure that large amounts of Ni (13.7 wt.%) are embedded in the silicalite-1 zeolite crystals as small particles ([Formula: see text]4.7 nm), with the zeolite channels transferring molecules while with the zeolite framework resisting the Ni particle migration.