Influence of calcination temperature on the catalytic activity of Mn/TiO<sub>2</sub> for NO oxidation

AN Zhong-yi; ZHUO Yu-qun; CHEN Chang-he

Volume 42 Issue 03

Mar. 2014

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(03): 370-376

AN Zhong-yi, ZHUO Yu-qun, CHEN Chang-he. Influence of calcination temperature on the catalytic activity of Mn/TiO2 for NO oxidation[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 370-376.

Citation:

AN Zhong-yi, ZHUO Yu-qun, CHEN Chang-he. Influence of calcination temperature on the catalytic activity of Mn/TiO₂ for NO oxidation[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 370-376.

Citation:

PDF( 3480 KB)

Influence of calcination temperature on the catalytic activity of Mn/TiO₂ for NO oxidation

Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China

Received Date: 2013-09-13
Rev Recd Date: 2013-12-25
Publish Date: 2014-03-31

Abstract

Abstract

The influence of calcination temperature on the catalytic activity of Mn-based catalysts impregnated on TiO₂ for the oxidation of NO was studied. The results showed that, relatively low calcination temperature was beneficial to promote the catalytic activity of Mn/TiO₂ catalysts. The catalysts were characterized by various techniques to study the influence mechanism of calcination temperature, including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), H₂ temperature programmed reduction (H₂-TPR) and O₂ temperature programmed desorption (O₂-TPD). It could be concluded that Mn₂O₃ played a dominant role in the process of NO oxidation, and the relatively lower calcination temperature could enhance the percentage of Mn₂O₃ in MnO_x, as well as promote the dispersion of MnO_x on TiO₂, thus raising the catalytic activity of Mn/TiO₂. When the calcination temperature was higher than 500 ℃, the agglomeration began to appear, and the crystalline phase of TiO₂ was transformed from anatase to rutile, Mn₂O₃ was, as well, transformed from amorphous phase to crystalline phase. The test results of H₂-TPR and O₂-TPD showed that relatively lower calcination temperature was beneficial to the reduction ability of Mn/TiO₂ catalysts and the desorption of chemisorbed O^2- on catalysts surface, the interaction of the two factors resulted in good mobility of chemisorbed O^2- on catalysts surface, which was good for the activity of catalysts.
- calcination temperature,
- NO oxidation,
- catalyst,
- preparation,
- pollution control

FullText(HTML)

References(27)

References

张虎, 佟会玲, 王晋元, 陈昌和. 用KMnO₄ 调质钙基吸收剂从燃煤烟气同时脱硫脱硝[J]. 化工学报, 2007, 58(7): 1810-1815. (ZHANG Hu, TONG Hui-ling, WANG Jin-yuan, CHEN Chang-he. Simultaneous removal of SO₂ and NO by using calcium absorbent with KMnO₄ as additive[J]. Journal of Chemical Industry and Engineering(China), 2007, 58(7): 1810-1815.)

SKALSKA K, MILLER J S, LEDAKOWICZ S. Trends in NO_x abatement: A review[J]. Sci Total Environ, 2010, 408(19): 3976-3989.

RUGGERI M P, NOVA I, TRONCON E. Experimental study of the NO oxidation to NO₂ over metal promoted zeolites aimed at the identification of the standard SCR rate determining step[J]. Top Catal, 2013, 56(1/8): 109-113.

WANG Z, ZHANG X, ZHOU Z, CHEN C, ZHOU J, CEN K. Effect of additive agents on the simultaneous absorption of NO₂ and SO₂ in the calcium sulfite slurry[J]. Energy Fuels, 2012, 26(9): 5583-5589.

赵迎宪, 危凤, 张艳辉, 虞影. NO在 Pt/γ-Al₂O₃ 上催化氧化反应机理和动力学[J]. 化工学报, 2008, 59(5): 1156-1164. (ZHAO Ying-xian, WEI Feng, ZHANG Yan-hui, YU Ying. Mechanism and kinetics of NO oxidation over Pt/SymbolgA@-Al₂O₃catalyst[J]. Journal of Chemical Industry and Engineering(China), 2008, 59(5): 1156-1164.)

LI L, SHEN Q, CHENG J, HAO Z. Catalytic oxidation of NO over TiO₂ supported platinum clusters I. Preparation, characterization and catalytic properties[J]. Appl Catal B: Environ, 2010, 93(3): 259-266.

YUNG M M, HOLMGREEN E M, OZKAN U S. Cobalt-based catalysts supported on titania and zirconia for the oxidation of nitric oxide to nitrogen dioxide[J]. J Catal, 2007, 247(2): 356-367.

ZHANG J, ZHANG S, CAI W, ZHONG Q. The characterization of CrCe-doped on TiO₂-pillared clay nanocomposites for NO oxidation and the promotion effect of CeO_x[J]. Appl Surf Sci, 2013, 268: 535-540.

LI K, TANG X, YI H. Mechanism of catalytic oxidation of NO over Mn-Co-Ce-O_x catalysts with the aid of nonthermal plasma at low temperature[J]. Ind Eng Chem Res, 2011, 50(19): 11023-11028.

QI G, YANG R T. Performance and kinetics study for low-temperature SCR of NO with NH₃over MnO_x-CeO₂ catalyst[J]. J Catal, 2003, 217(2): 434-441.

QI G, YANG R T. Low-temperature selective catalytic reduction of NO with NH₃ over iron and manganese oxides supported on titania[J]. Appl Catal B: Environ, 2003, 44(3): 217-225.

WU Z, TANG N, XIAO L, LIU Y, WANG H. MnO_x/TiO₂ composite nanoxides synthesized by deposition-precipitation method as a superior catalyst for NO oxidation[J]. J Colloid Interface Sci, 2010, 352(1): 143-148.

XU W, ZHAO J, WANG H, ZHU T, LI P, JING P. Catalytic oxidation activity of NO on TiO₂-supported Mn-Co composite oxide catalysts[J]. Acta Phys-Chim Sin, 2013, 29(2): 385-390.

TANG X, HAO J, YI H, LL J. Low-temperature SCR of NO with NH₃ over AC/C supported manganese-based monolithic catalysts[J]. Catal Today, 2007, 126(3): 406-411.

PINNA F. Supported metal catalysts preparation[J]. Catal Today, 1998, 41(1): 129-137.

PARK E, CHIN S, JEONG J, JURNG J. Low-temperature NO oxidation over Mn/TiO₂ nanocomposite synthesized by chemical vapor condensation: Effects of Mn precursor on the surface Mn species[J]. Micropor Mesopor Mater, 2012, 163: 96-101.

ETTIREDDY P R, ETTIREDDY N, MAMEDOV S, BOOLCHAND P, SMIRNIOTIS P G. Surface characterization studies of TiO₂ supported manganese oxide catalysts for low temperature SCR of NO with NH₃[J]. Appl Catal B: Environ, 2007, 76(1): 123-134.

STOBBE E R, DE BOER B A, GEUS J W. The reduction and oxidation behaviour of manganese oxides[J]. Catal Today, 1999, 47(1): 161-167.

MORALES M R, BARBERO B P, CADUS L E. Total oxidation of ethanol and propane over Mn-Cu mixed oxide catalysts[J]. Appl Catal B: Environ, 2006, 67(3): 229-236.

DELIMARIS D, IOANNIDES T. VOC oxidation over MnO_x-CeO₂ catalysts prepared by a combustion method[J]. Appl Catal B: Environ, 2008, 84(1): 303-312.

TANG X, HAO J, XU W, LI J. Low temperature selective catalytic reduction of NO_x with NH₃ over amorphous MnO_x catalysts prepared by three methods[J]. Catal Commun, 2007, 8(3): 329-334.

ATRIBAK I, BUENO-LóPEZ A, GARCíA-GARCíA A, NAVARRO P, FRíAS D, MONTES M. Catalytic activity for soot combustion of birnessite and cryptomelane[J]. Appl Catal B: Environ, 2010, 93(3): 267-273.

CIMINO A, INDOVINA V. Catalytic activity of Mn³⁺ and Mn⁴⁺ ions dispersed in MgO for CO oxidation[J]. J Catal, 1974, 33(3): 493-496.

KAPTEIJN F, SMGOREDJO L, ANDREML A. Activity and selectivity of pure manganese oxides in the selective catalytic reduction of nitric oxide with ammonia[J]. Appl Catal B: Environ, 1994, 3(2): 173-189.

TRAWCZYNSKI J, BIELAK B, MISTA W. Oxidation of ethanol over supported manganese catalysts—Effect of the carrier[J]. Appl Catal B: Environ, 2005, 55(4): 277-285.

LEITH I R, HOWDEN M G. Temperature-programmed reduction of mixed iron—manganese oxide catalysts in hydrogen and carbon monoxide[J]. Appl Catal, 1988, 37: 75-92.

SULTANA A, SASAKI M, HAMADA H. Influence of support on the activity of Mn supported catalysts for SCR of NO with ammonia[J]. Catal Today, 2012, 185(1): 284-289.

Relative Articles

Supplements(0)

Cited By

Proportional views