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

In this article, supported Au/TS-1 catalysts were prepared and characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Their performance in the catalytic oxidation of nitrogen monoxide (NO) was evaluated, and the effect of reaction conditions on NO conversion was examined. The results indicated that the Au granules can be successfully loaded on the molecular sieve TS-1 and the catalysts Au/TS-1 obtained exhibited good crystallinity. The catalysts Au/TS-1 also exhibit excellent performance in the selective catalytic oxidation of NO 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 5000 h−1, the conversion of NO reaches 55% at 180°C and 78% at 260°C.