Article history: A series of Fe-loaded activated carbons treated by HNO (Fe/NAC) were prepared by incipient impreg- Received 3 July 2015 nation method with or without ultrasonic assistance and characterized using X-ray diffraction (XRD), Received in revised form 12 October 2015 Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy with energy disperse Accepted 5 November 2015 spectroscope (SEM-EDS), transmission electron microscopy (TEM) and N adsorption/desorption. The Available online 10 November 2015 desulfurization activities were evaluated at a ﬁxed bed reactor under a mixed gas simulated from ﬂue gas. The results showed that desulfurization activity from excellent to poor is as follows: Fe/NAC-60 > Fe/NAC- Keywords: 80 > Fe/NAC-30 > Fe/NAC-15 > Fe/NAC-0 > Fe/NAC-100 > NAC. Fe/NAC-60 exhibits the best desulfurization Activated carbon activity and has breakthrough sulfur capacity of 319 mg/g and breakthrough time of 540 min. The intro- Iron duction of ultrasonic oscillation does not change the form of Fe oxides on activated carbon but can Ultrasonic oscillation change the dispersion and relative contents of Fe O . The types of oxygen-containing functional groups Impregnation 3 4 have no obvious change for all samples but the texture properties show some differences when they Desulfurization are oscillated for different
Applied Surface Science – Elsevier
Published: Jan 1, 2016
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