Catalytic performance of Au/TS-1 in selective oxidation of nitrogen monoxide

Supported Au/TS-1 catalysts were prepared and characterized by XRD, SEM and TEM. Their performance in the catalytic oxidation of nitrogen monoxide was evaluated and the effect of reaction conditions on NO conversion was examined. The results indicated that Au granules are successfully loaded on the molecular sieve TS-1 and the catalysts Au/TS-1 obtained exhibit good crystallinity. The catalysts Au/TS-1 exhibit excellent performance in the selective catalytic oxidation of nitrogen monoxide at low temperature. Over the catalyst with an Au loading of 1.0%, with the molar fractions of NO and O₂ in the feed being 1×10^-3 and 0.1, respectively, and under a space velocity (GHSV) of 5000h^－1, the conversion of NO reaches 55% at 180℃ and 78% at 260℃.