Citation: KONG Ming, LIU Qing-cai, ZHAO Dong, REN Shan, MENG Fei. Synergy of NaCl and Hg⁰ on V₂O₅-WO₃/TiO₂ SCR catalysts[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(12): 1504-1509. shu

Synergy of NaCl and Hg⁰ on V₂O₅-WO₃/TiO₂ SCR catalysts

1.
Engineering Research Center for Energy and Environment of Chongqing, College of Materials Science and Engineering of Chongqing University, Chongqing 400044, China

Corresponding author: REN Shan,
Received Date: 18 May 2015
Available Online: 21 July 2015
Fund Project: 国家自然科学基金(51274263,51204220) (51274263,51204220)重庆市自然科学基金(cstc2013jjB0035)资助项目 (cstc2013jjB0035)

The nano V₂O₅-WO₃/TiO₂ catalysts were prepared. NaCl was loaded on the catalysts by impregnation and Hg⁰ was loaded by adsorption. The samples were characterized by XRD, SEM, BET, NH₃-TPD and FT-IR measurements to investigate the effect of NaCl and Hg⁰ on the performance of V₂O₅-WO₃/TiO₂ SCR catalysts. Besides, the functional mechanism was proposed combining with previous conclusions. The results indicate that NaCl causes the agglomeration of catalysts, leading to the decrease of BET surface area. For NaCl poisoning catalysts, the deactivation is observed obviously with the increase of NaCl loadings. Brønsted acid sites (-V-OH) are neutralized by Na to ultimately form -V-O-Na and Cl-V-O-Na, resulting in the decline of catalytic activity. Hg⁰ shows no influence on the microstructure and phase composition of the catalysts. However, it can be adsorbed on the V active sites to weaken the De-NO_x activities slightly. When NaCl and Hg⁰ exist simultaneously, Hg⁰ will combine with Cl that is introduced from NaCl to form HgCl or HgCl₂ and partly replace Na, and -V-O…Hg or-V-O-Hg-Cl is produced finally.
- synergy,
- V₂O₅-WO₃/TiO₂ catalyst,
- NaCl,
- Hg⁰,
- deactivation
1. [1]
  [1] ZHENG Y J, JENSEN A D, JOHNSSON J E. Laboratory investigation of selective catalytic reduction catalysts:Deactivation by potassium compounds and catalyst regeneration[J]. Ind Eng Chem Res, 2004, 43(4):941-947.
2. [2]
  [2] 黄妍,童志权,伍斌,张俊丰. V₂O₅-CeO₂/TiO₂催化剂上低温氨选择性催化还原NO的性能[J].燃料化学学报, 2008, 36(5):616-620. (HUANG Yan, TONG Zhi-quan, WU Bin, ZHANG Jun-feng. Low temperature selective catalytic reduction of NO by ammonia over V₂O₅-CeO₂/TiO₂[J]. J Fuel Chem Technol, 2008, 36(5):616-620.)
3. [3]
  [3] 胡石磊,叶代启,付名利. V₂O₅/TiO₂-SiO₂表面酸性对选择性催化还原NO及抗碱金属性能的影响[J].无机化学学报, 2008, 24(7):1113-1118. (HU Shi-lei, YE Dai-qi, FU Ming-li. Effect of surface acidity on NO reduction and resistance towards alkali poisoning over V₂O₅/TiO₂-SiO₂[J]. Chin J Inorg Chem, 2008, 24(7):1113-1118.)
4. [4]
  [4] CASAGRANDE L, LIETTI L, NOVA I, FORZATTI P, BAIKER A. SCR of NO by NH₃ over TiO₂-supported V₂O₅-MoO₃ catalysts:Reactivity and redox behavior[J]. Appl Catal B:Environ, 1999, 22(1):63-77.
5. [5]
  [5] LIETTI L, FORZATTI P, BREGANI F. Steady-state and transient reactivity study of TiO₂-supported V₂O₅-WO₃ De-NO_x catalysts:Relevance of the vanadium-tungsten interaction on the catalytic activity[J]. Ind Eng Chem Res, 1996, 35(11):3884-3892.
6. [6]
  [6] LARSSON A C, EINVALL J, ANDERSSON A, SANALL M. Targeting by comparison with laboratory experiments the SCR catalyst deactivation process by potassium and zinc salts in a large-scale biomass combustion boiler[J]. Energy Fuels, 2006, 20(4):1398-1405.
7. [7]
  [7] 朱崇兵,金保升,仲兆平,李锋,陈玲霞,翟俊霞. K₂O对V₂O₃-WO₃/TiO₂催化剂的中毒作用[J].东南大学学报(自然科学版), 2008, 38(1):101-105. (ZHU Chong-bing, JIN Bao-sheng, ZHONG Zhao-ping, LI Feng, CHEN Ling-xia, ZHAI Jun-xia. Poisoning effect of K₂O on V₂O₅-WO₃/TiO₂ catalysts[J]. J Southeast Univ (Nat Sci), 2008, 38(1):101-105.)
8. [8]
  [8] KURT A C, MICHAEL S, HANS L. The formation of submicron aerosol particles, HCl and SO₂ in straw-fired boilers[J]. J Aerosol Sci, 1998, 29(4):421-444.
9. [9]
  [9] LISI L. Single and combined deactivating effect of alkali metals and HCl on commercial SCR catalysts[J]. Appl Catal B:Environ, 2004, 50(4):251-258.
10. [10]
  [10] LIETTI L, FORZATTI P, RAMIS G. Potassium doping of vanadia/titania de-NO_x catalysts:Surface characterization and reactivity study[J]. Appl Catal B:Environ, 1993, 3(1):13-35.
11. [11]
  [11] KAMATA H, TAKAHASHI K, ODENBRAND C U I. The role of K₂O in the selective reduction of NO with NH₃ over a V₂O₅(WO₃)/TiO₂ commercial selective catalytic reduction catalyst[J]. J Mol Catal A:Chem, 1999, 139(2/3):189-198.
12. [12]
  [12] 胡石磊,叶代启.钾对催化剂选择性催化还原氮氧化物的性能影响特性研究[J].环境污染与防治, 2008, 30(7):43-46. (HU Shi-lei, YE Dai-qi. Effect of potassium on the selective reduction of NO by NH₃ on V₂O₅ catalysts[J]. Environ Pollut Control, 2008, 30(7):43-46.)
13. [13]
  [13] ZHANG X L, HUANG Z G, LIU Z Y. Effect of KCl on selective catalytic reduction of NO with NH₃ over a V₂O₅/AC catalyst[J]. Catal Commun, 2008, 9(5):842-846.
14. [14]
  [14] KAMATA H, UENO S, NAITO T. Mercury oxidation over the V₂O₅(WO₃)/TiO₂ commercial SCR catalyst[J]. Ind Eng Chem Res, 2008, 47(21):8136-8141.
15. [15]
  [15] GAO W, LIU Q C, WU C Y, LI H L, LI Y, YANG J, WU G F. Kinetics of mercury oxidation in the presence of hydrochloric acid and oxygen over a commercial SCR catalyst[J]. Chem Eng J, 2013, 220:53-60.
16. [16]
  [16] STOLLE R, KOESER H, GUTBERLET H. Oxidation and reduction of mercury by SCR DeNO_x catalysts under flue gas conditions in coal fired power plants[J]. Appl Catal B:Environ, 2014, 144:486-497.
17. [17]
  [17] TOPSØE N Y, TOPSØE H, DUMESIC J A. Vanadia/titania catalysts for selective catalytic reduction (SCR) of nitric oxide by ammonia. I. Combined temperature programmed in situ FT-IR and on-line mass spectroscopy studies[J]. J Catal, 1995, 151:226-240.
18. [18]
  [18] TOPSØE N Y, DUMESIC J A, TOPSØE H. Vanadia/titania catalysts for selective catalytic reduction (SCR) of nitric oxide by ammonia. Ⅱ. Studies of active sites and formulation of catalytic cycles[J]. J Catal, 1995, 151:241-252.
19. [19]
  [19] HE S, ZHOU J S, ZHU Y Q, LUO Z Y, NI M J, CEN K F. Mercury oxidation over a vanadia-based selective catalytic reduction catalyst[J]. Energy Fuels, 2009, 23:253-259.
20. [20]
  [20] SANDRA S, THOMAS H, HEINZ K. Adsorption and oxidation of mercury in tail-end SCR De-NO_x plants-Bench scale investigations and speciation experiments[J]. Appl Catal B:Environ, 2008, 79:286-295.
21. [21]
  [21] NIKSA S, FUJIWARA N. A predictive mechanism for mercury oxidation of selective catalytic reduction catalysts under coal-derived flue gas[J]. J Air Waste Manage, 2005, 55:1866-1875.
22. [22]
  [22] YUJIN E, SEOK H J, THANH A N, JINSOO K, TAI G L. Heterogeneous mercury reaction on a selective catalytic reduction (SCR) catalyst[J]. Catal Lett, 2008, 121:219-225.
23. [23]
  [23] LIU J, HE M F, ZHENG C G, CHANG M. Density functional theory study of mercury adsorption on V₂O₅(001) surface with implications for oxidation[J]. Proc Combust Inst, 2011, 33:2771-2777.
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沈阳化工大学材料科学与工程学院沈阳 110142

Synergy of NaCl and Hg0 on V2O5-WO3/TiO2 SCR catalysts

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通讯作者: 陈斌, bchen63@163.com

Synergy of NaCl and Hg⁰ on V₂O₅-WO₃/TiO₂ SCR catalysts