Alumina-carbon nanotube supports for sulfur-resistant regenerable Pt-based catalysts in NOx reduction

doi:10.1016/S1872-2067(12)60745-1

Abstract

Abstract:

Alumina-carbon nanotube (Al₂O₃-CNT) supports were prepared by the decomposition of acetylene on Al₂O₃. The subsequent impregnation of Pt and Ba yielded Pt/Ba/Al₂O₃-CNT. Pt/Ba/Al₂O₃-CNT was characterized by X-ray diffraction, scanning and transmission electron microscopies, N₂ physisorption, X-ray photoelectron spectroscopy, and in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The relationship between the structure and properties of Pt/Ba/Al₂O₃-CNT was investigated. Pt/Ba/Al₂O₃-CNT exhibited much higher resistance to SO₂ poisoning and better regeneration ability than Pt/Ba/Al₂O₃, during NO_x reduction in the presence of SO₂. In-situ DRIFTS spectra suggested that SO₂ had no effect on the NO_x storage and reduction process.

Key words: Carbon nanotube, Oxynitride elimination, Sulfur dioxide poisoning, Regeneration

Lilong Jiang, Yuling Wang, Xian Liu, Yanning Cao, Kemei Wei. Alumina-carbon nanotube supports for sulfur-resistant regenerable Pt-based catalysts in NO_x reduction[J]. Chinese Journal of Catalysis, 2013, 34(12): 2271-2276.

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Alumina-carbon nanotube supports for sulfur-resistant regenerable Pt-based catalysts in NO_x reduction

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