The effect of preparation conditions of Pt/Al₂O₃ on its catalytic performance for the H₂-SCR in the presence of oxygen

Abstract

Selective catalytic reduction of NO_x by H₂ in the presence of oxygen has been investigated over Pt/Al₂O₃ catalysts pre-treated under different conditions. Catalyst preparation conditions exert significant influence on the catalytic performance, and the catalyst pre-treated by H₂ or H₂ then followed by O₂ is much more active than that pre-treated by air. The higher surface area and the presence of metallic Pt over Pt/Al₂O₃ pre-treated by H₂ or pretreated by H₂ then followed by O₂ can contribute to the formation of NO₂, which then promotes the reaction to proceed at low temperatures.

Keywords

NO_x reduction / Pt/Al₂O₃ / preparation condition / H₂-SCR

References

[1] Bosch H, Janssen F. Formation and control of nitrogen oxides. Catalysis Today, 1988, 2(4): 369–379

[2] Liu Z, Woo S I. Recent advances in catalytic deNO_x science and technology. Catalysis Reviews- Science and Engineering, 2006, 48(1): 43–89

[3] Peng Y, Li J, Chen L, Chen J, Han J, Zhang H, Han W. Alkali metal poisoning of a CeO₂-WO₃ catalyst used in the selective catalytic reduction of NO_x with NH₃: an experimental and theoretical study. Environmental Science & Technology, 2012, 46(5): 2864–2869

[4] Liu Z, Li J, Hao J. Selective catalytic reduction of NO_x with propene over SnO₂/Al₂O₃ catalyst. Chemical Engineering Journal, 2010, 165(2): 420–425

[5] Costa C N, Savva P G, Fierro J L G, Efstathiou A M. Industrial H₂-SCR of NO on a novel Pt/MgO-CeO₂ catalyst. Applied Catalysis B: Environmental, 2007, 75(3-4): 147–156

[6] Qi G, Yang R T, Rinaldi F C.Selective catalytic reduction of nitric oxide with hydrogen over Pd-based catalysts. Journal of Catalysis, 2006, 237(2): 381–392

[7] Park S M, Kim M, Kim E S, Han H, Seo G. H₂-SCR of NO on Pt-MnO_x catalysts: reaction path via NH₃ formation. Applied Catalysis A, 2011, 395(1-2): 120–128

[8] Costa C N, Efstathiou A M. Low-temperature H₂-SCR of NO on a novel Pt/MgO-CeO₂ catalyst. Applied Catalysis B: Environmental, 2007, 72(3-4): 240–252

[9] Costa C N, Stathopoulos V N, Belessi V C, Efstathiou A M. An investigation of the NO/H₂/O₂ (lean-deNO_x) reaction on a highly active and selective Pt/La_0.5Ce_0.5MnO₃ catalyst. Journal of Catalysis, 2001, 197(2): 350–364

[10] Chiarello G L, Ferri D, Grunwaldt J, Forni L, Baiker A. Flame-synthesized LaCoO₃-supported Pd: 2. catalytic behavior in the reduction of NO by H₂ under lean conditions. Journal of Catalysis, 2007, 252(2): 137–147

[11] Shibata J, Hashimoto M, Shimizu K, Yoshida H, Hattori T, Satsuma A. Factors controlling activity and selectivity for SCR of NO by hydrogen over supported platinum Catalysts. Journal of Physical Chemistry B, 2004, 108(47): 18327–18335

[12] Wen B. NO reduction with H₂ in the presence of excess O₂ over Pd/MFI catalyst. Fuel, 2002, 81(14): 1841–1846

[13] Xin M, Hwang I C, Kim D H, Cho S I, Woo S I. The effect of the preparation conditions of Pt/ZSM-5 upon its activity and selectivity for the reduction of nitric oxide. Applied Catalysis B: Environmental, 1999, 21(3): 183–190

[14] Machida M, Ikeda S, Kurogi D, Kijima T. Low temperature catalytic NO_x-H₂ reactions over Pt/TiO₂-ZrO₂ in an excess oxygen. Applied Catalysis B: Environmental, 2001, 35(2): 107–116

[15] Burch R, Coleman M D. An investigation of the NO/H₂/O₂ reaction on noble-metal catalysts at low temperatures under lean-burn conditions. Applied Catalysis B: Environmental, 1999, 23(2-3): 115–121

[16] Furfori S, Russo N, Fino D, Saracco G, Specchia V N O. SCR reduction by hydrogen generated in line on perovskite-type catalysts for automotive diesel exhaust gas treatment. Chemical Engineering Science, 2010, 65(1): 120–127

[17] Yang S, Wang X, Chu W, Song Z, Zhao S. An investigation of the surface intermediates of H₂-SCR of NO_x over Pt/H-FER. Applied Catalysis B: Environmental, 2011, 107(3-4): 380–385

[18] Yang J, Fu O, Wu D, Wang S. DRIFTS study of NO-H₂ reaction over Pd/Al₂O₃ with excess oxygen. Applied Catalysis B: Environmental, 2004, 49(1): 61–65

[19] Haneda M, Kintaichi Y, Shimada H, Hamada H. Selective reduction of NO with propene over Ga₂O₃-Al₂O₃: Effect of sol-gel method on the catalytic performance. Journal of Catalysis, 2000, 192(1): 137–148

[20] Liu Z, Hao J, Fu L, Zhu T, Li J, Cui X. Activity enhancement of bimetallic Co-In/Al₂O₃ catalyst for the selective reduction of NO by propene. Applied Catalysis B: Environmental, 2004, 48(1): 37–48

[21] Paulis M, Peyrard H, Montes M. Influence of chlorine on the activity and stability of Pt/Al₂O₃ catalysts in the complete oxidation of toluene. Journal of Catalysis, 2001, 199(1): 30–40

[22] Forzatti P, Nova I, Tronconi E. Enhanced NH₃ selective catalytic reduction for NO_x abatement. Angew Chem Int Ed Engl, 2009, 48(44): 8366–8368

[23] Ueda A, Nakao T, Azuma M, Kobayashi T. Two conversion maxima at 373 and 573K in the reduction of nitrogen monoxide with hydrogen over Pd/TiO₂ catalyst. Catalysis Today, 1998, 45(1-4): 135–138

[24] Liu Z, Li J, Woo S I. Recent advances in the selective catalytic reduction of NO_x by hydrogen in the presence of oxygen. Energy & Environmental Science, 2012, 5(10): 8799–8814

[25] Savva P, Costa C N. Hydrogen lean-deNO_x as an alternative to the ammonia and hydrocarbon selective catalytic reduction (SCR). Catalysis Reviews- Science and Engineering, 2011, 53(2): 91–151

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