Effect of Dispersion State and Surface Properties of Supported Vanadia on the Activity of V2O5/TiO2 Catalysts for the Selective Catalytic Reduction of NO by NH3

doi:10.1016/S1872-2067(11)60365-3

Abstract

Abstract: The effect of the dispersion state and surface properties of supported vanadia on the selective catalytic reduction (SCR) activity of NO over V₂O₅/TiO₂catalysts was studied by various experimental techniques. The experimental monolayer dispersion capacity of V₂O₅on anatase (6.86 VO_x/nm²) measured by XRD was almost the same as the concentration of surface vacant sites of anatase estimated by the incorporation model, and it was suggested that isolated vanadia species tend to be dispersed on adjacent octahedral vacant sites. An increase of the NO turnover frequency (TOF) at 300 °C to a maximum (8.3 × 10^-³s^-1) at a coverage near half a monolayer was related to the increase of the amount of weak acid sites (Brönsted acid site on each vanadium ion). The TOF decreased rapidly at high VO_x coverages because of a decrease of the reducibility of vanadia species and a decrease of the ratio of exposed vanadia species on the surface. The Brönsted acid sites on bridging V–O(H)–V and terminal V–OH of polymeric vanadia species were all active sites in the SCR reaction. The SCR activity of the V₂O₅/TiO₂ catalysts was related to the dispersion state, acidity, and reducibility of the vanadia species.

Key words: vanadia species, dispersion state, selective catalytic reduction, Brönsted acid site, reducibility, nitrogen oxide

TANG Fu-Shun, ZHUANG Ke, YANG Fang, YANG Li-Li, XU Bo-Lian, QIU Jin-Heng, FAN Yi-Ning. Effect of Dispersion State and Surface Properties of Supported Vanadia on the Activity of V₂O₅/TiO₂ Catalysts for the Selective Catalytic Reduction of NO by NH₃[J]. Chinese Journal of Catalysis, 2012, 33(6): 933-940.

×
share this article

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(11)60365-3

https://www.cjcatal.com/EN/Y2012/V33/I6/933

References

1 Forzatti P. Appl Catal A, 2001, 222: 221
2 Bond G C, Tahir S F. Appl Catal, 1991, 71: 1
3 Bañares M A, Wachs I E. J Raman Spectrosc, 2002, 33: 359
4 Grzybowska-Swierkosz B. Appl Catal A, 1997, 157: 263
5 Wachs I E, Weckhuysen B M. Appl Catal A, 1997, 157: 67
6 Went G T, Leu L J, Bell A T. J Catal, 1992, 134: 479
7 Went G T, Leu L J, Rosin R R, Bell A T. J Catal, 1992, 134: 492
8 Baiker A, Handy B, Nickl J, Schraml-Marth M, Wokaun A. Catal Lett, 1992, 14: 89
9 Lietti L, Forzatti P. J Catal, 1994, 147: 241
10 Topsöe N-Y, Topsöe H, Dumesic J A. J Catal, 1995, 151: 226
11 Marshneva V I, Slavinskaya E M, Kalinkina O V, Odegova G V, Moroz E M, Lavrova G V, Salanov A N. J Catal, 1995, 155: 171
12 Alemany L J, Lietti L, Ferlazzo N, Forzatti P, Busca G, Giamello E, Bregani F. J Catal, 1995, 155: 117
13 Wachs I E, Deo G, Weckhuysen B M, Andreini A, Vuurman M A, de Boer M, Amiridis M D. J Catal, 1996, 161: 211
14 Reiche M A, Hug P, Baiker A. J Catal, 2000, 192: 400
15 Amiridis M D, Wachs I E, Deo G, Jehng J M, Kim D S. J Catal, 1996, 161: 247
16 Ni Z M, Chen A M, Fang C P, Wang L G, Yu W H. J Phys Chem Solids, 2009, 70: 632
17 Tang F S, Xu B L, Shi H H, Qiu J H, Fan Y N. Appl Catal B, 2010, 94: 71
18 Xie Y C, Tang Y Q. Adv Catal, 1990, 37: 1
19 Deo G, Wachs I E. J Catal, 1994, 146: 323
20 Wachs I E. Catal Today, 1996, 27: 437
21 Primet M, Pichat P, Mathieu M V. J Phys Chem, 1971, 75: 1216
22 Xu B L, Fan Y N, Liu L, Lin M, Chen Y. Sci China, Ser B, 2002, 45: 407
23 Chen Y, Zhang L F. Catal Lett, 1992, 12: 51
24 Dong L, Chen Y. Chin J Inorg Chem, 2000, 16: 250
25 Mutin P H, Popa A F, Vioux A, Delahay G, Coq B. Appl Catal B, 2006, 69: 49
26 Giakoumelou I, Fountzoula C, Kordulis C, Boghosian S. J Catal, 2006, 239: 1
27 Ramis G, Busca G, Bregani F, Forzatti P. Appl Catal, 1990, 64: 259
28 Ramis G, Yi L, Busca G. Catal Today, 1996, 28: 373
29 Topsöe N-Y. J Catal, 1991, 128: 499
30 Busca G, Lietti L, Ramis G, Berti F. Appl Catal B, 1998, 18: 1
31 Topsöe N-Y, Dumesic J A, Topsöe H. J Catal, 1995, 151: 241.
32 刘清雅, 刘振宇, 李成岳. 催化学报(Liu Q Y, Liu Zh Y, Li Ch Y. Chin J Catal), 2006, 27: 636
33 Bosch H, Kip B J, van Ommen J G, Gellings P J. J Chem Soc, Faraday Trans 1, 1984, 80: 2479
34 Busca G, Centi G, Marchetti L, Trifiro F. Langmuir, 1986, 2: 568
35 Gheorghe C, Gee B. Chem Mater, 2000, 12: 682
36 Went G T, Oyama S T, Bell A T. J Phys Chem, 1990, 94: 4240
37 Miyata H, Fujii K, Ono T. J Chem Soc, Faraday Trans 1, 1988, 84: 3121
38 Ozkan U S, Cai Y P, Kumthekar M M. Appl Catal A, 1993, 96: 365
39 Gasior M, Haber J, Machej T, Czeppe T. J Mol Catal, 1988, 43: 359

[1]	Wen-Min Liao, Pei-Pei Zhao, Bing-Heng Cen, Ai-Ping Jia, Ji-Qing Lu, Meng-Fei Luo. Co-Cr-O mixed oxides for low-temperature total oxidation of propane: Structural effects, kinetics, and spectroscopic investigation [J]. Chinese Journal of Catalysis, 2020, 41(3): 442-453.
[2]	Xiaona Liu, Yi Cao, Nana Yan, Chao Ma, Lei Cao, Peng Guo, Peng Tian, Zhongmin Liu. Cu-SAPO-17: A novel catalyst for selective catalytic reduction of NO_x [J]. Chinese Journal of Catalysis, 2020, 41(11): 1715-1722.
[3]	Yiyang Zhang, Hui Zeng, Bin Jia, Zhihua Wang, Zhiming Liu. Selective catalytic reduction of NO_x by H₂ over Pd/TiO₂ catalyst [J]. Chinese Journal of Catalysis, 2019, 40(6): 849-855.
[4]	Shujun Ming, Lei Pang, Chi Fan, Wen Guo, Yahao Dong, Peng Liu, Zhen Chen, Tao Li. Chemical deactivation of Cu-SAPO-18 deNO_x catalyst caused by basic inorganic contaminants in diesel exhaust [J]. Chinese Journal of Catalysis, 2019, 40(4): 590-599.
[5]	Chuanmin Chen, Yue Cao, Songtao Liu, Jianmeng Chen, Wenbo Jia. Review on the latest developments in modified vanadium-titanium-based SCR catalysts [J]. Chinese Journal of Catalysis, 2018, 39(8): 1347-1365.
[6]	Jun Yang, Yupeng Chang, Weili Dai, Guangjun Wu, Naijia Guan, Landong Li. Bimetallic Cr-In/H-SSZ-13 for selective catalytic reduction of nitric oxide by methane [J]. Chinese Journal of Catalysis, 2018, 39(5): 1004-1011.
[7]	Zhongyi Sheng, Dingren Ma, Danqing Yu, Xiang Xiao, Bingjie Huang, Liu Yang, Sheng Wang. Synthesis of novel MnO_x@TiO₂ core-shell nanorod catalyst for low-temperature NH₃-selective catalytic reduction of NO_x with enhanced SO₂ tolerance [J]. Chinese Journal of Catalysis, 2018, 39(4): 821-830.
[8]	Yarong Fang, Yanbing Guo. Copper-based non-precious metal heterogeneous catalysts for environmental remediation [J]. Chinese Journal of Catalysis, 2018, 39(4): 566-582.
[9]	Xiaoxia Dai, Weiyu Jiang, Wanglong Wang, Xiaole Weng, Yuan Shang, Yehui Xue, Zhongbiao Wu. Supercritical water syntheses of transition metal-doped CeO₂nano-catalysts for selective catalytic reduction of NO by CO: An in situ diffuse reflectance Fourier transform infrared spectroscopy study [J]. Chinese Journal of Catalysis, 2018, 39(4): 728-735.
[10]	Yexuan Wen, Shuang Cao, Xiaoqi Fei, Haiqiang Wang, Zhongbiao Wu. One-step synthesized SO₄^2--TiO₂ with exposed (001) facets and its application in selective catalytic reduction of NO by NH₃ [J]. Chinese Journal of Catalysis, 2018, 39(4): 771-778.
[11]	Lei Chen, Ding Weng, Jiadao Wang, Duan Weng, Li Cao. Low-temperature activity and mechanism of WO₃-modified CeO₂-TiO₂ catalyst under NH₃-NO/NO₂ SCR conditions [J]. Chinese Journal of Catalysis, 2018, 39(11): 1804-1813.
[12]	Wei Li, Cheng Zhang, Xin Li, Peng Tan, Anli Zhou, Qingyan Fang, Gang Chen. Ho-modified Mn-Ce/TiO₂ for low-temperature SCR of NO_x with NH₃: Evaluation and characterization [J]. Chinese Journal of Catalysis, 2018, 39(10): 1653-1663.
[13]	Wenjin Xu, Guangxu Zhang, Hanwei Chen, Guomeng Zhang, Yang Han, Yichuan Chang, Peng Gong. Mn/beta and Mn/ZSM-5 for the low-temperature selective catalytic reduction of NO with ammonia: Effect of manganese precursors [J]. Chinese Journal of Catalysis, 2018, 39(1): 118-127.
[14]	Tiaoyun Zhou, Qing Yuan, Xiulian Pan, Xinhe Bao. Growth of Cu/SSZ-13 on SiC for selective catalytic reduction of NO with NH₃ [J]. Chinese Journal of Catalysis, 2018, 39(1): 71-78.
[15]	Xiaojiang Yao, Li Chen, Tingting Kong, Shimin Ding, Qiong Luo, Fumo Yang. Support effect of the supported ceria-based catalysts during NH₃-SCR reaction [J]. Chinese Journal of Catalysis, 2017, 38(8): 1423-1430.

Effect of Dispersion State and Surface Properties of Supported Vanadia on the Activity of V₂O₅/TiO₂ Catalysts for the Selective Catalytic Reduction of NO by NH₃

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

share this article

References

Related Articles 15

Recommended Articles

Metrics