Title: Effect of nanoV₂O₅, nanoFe₂O₃ and nanoV₂O₅/Fe₂O₃ on selective catalytic reduction of NO over a modified AC catalyst

Authors: Juanjuan Yang; Min Qiang; Wei Li; Weiyi Fu; Long Zhang; Jingjing Lei

Addresses: Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China ' Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China ' Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China ' Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China ' Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China ' Collage of Chemical Engineering and Technology, Wuhan University of Science and Technology, Heping Road, 947, Qingshan District, Wuhan, Hubei 430081, China

Abstract: The study on columnar activated coke (AC) modified by H₂O₂ and HNO₃ (HAC) has shown that, compared to original sample AC, the BET surface area and micro-pore area of HAC increased 162.8 m²/g and 143.8 m²/g respectively. Three types of low temperature selective catalytic reduction (SCR) catalysts were developed by loading on HAC with nano-V₂O₅, nano-Fe₂O₃ and nano-V₂O₅/Fe₂O₃, respectively. All those catalysts samples were characterised by BET area and pore structure analysis, XRD, TEM and SEM. Under the same conditions: 500 ppm NO, 500 ppm NH₃, 5% O₂, N₂ balance, 6,000 L/(Kg • h), 200°C, an investigation has been made over the NO removal performances of some samples and the results showed that the denitration rates of AC, HAC, V₂O₅/AC, Fe₂O₃/AC and V-Fe/AC are 14.73%, 51.67%, 59.25%, 64.93% and 67.85%, respectively. The best denitration performance was achieved by V-Fe/AC catalyst, which represents an increase of 53.12% compared to original AC. [Received: September 22, 2014; Accepted: May 22, 2015]

Keywords: activated coke; NO removal; nitrogen oxide; nitric oxide; coal catalyst; vanadium oxide; V2O5; iron oxide; ferric oxide; Fe2O3; micropores; selective catalytic reduction; SCR catalysts; pore structure; nanomaterials; nanotechnology; denitration rates.

DOI: 10.1504/IJOGCT.2016.075106

International Journal of Oil, Gas and Coal Technology, 2016 Vol.11 No.4, pp.387 - 396

Received: 30 Sep 2014
Accepted: 22 May 2015
Published online: 03 Mar 2016 *

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