Kinetic study of photo-SCR with NH3 over TiO2

被引：62
|
作者：
Teramura, K [1 ]
Tanaka, T [1 ]
Yamazoe, S [1 ]
Arakaki, K [1 ]
Funabiki, T [1 ]
机构：
[1] Kyoto Univ, Grad Sch Engn, Dept Mol Engn, Kyoto 6158510, Japan
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2004年 / 53卷 / 01期
关键词：
photo-SCR; Eley-Rideal mechanism; Lewis acid site;
D O I：
10.1016/j.apcatb.2004.05.005
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
83% of NO conversion and 96% of N-2 selectivity were achieved in the photo-SCR system over TiO2 photocatalyst. N-2 was evolved in the gas phase when NO was flowed over TiO2 pretreated by NH3 under photoirradiation. The photo-SCR reaction proceeds according to Eley-Rideal mechanism. NO in the gas phase attacks NH3 adsorbed on Lewis acid site. Strength and/or amount of the Lewis acid site related to NH3 adsorption had an influence on the N-2 evolution. Therefore, the surface acid property of TiO2 is an important factor to control the N-2 evolution. In addition, the reaction orders of gases (NO, NH3 and O-2) and light intensity were determined by the kinetic studies. The results supported the reaction mechanism which we have proposed in the previous works. Time-determining step of the photo-SCR over TiO2 is the process of decomposition of a NH2NO intermediate under excess O-2 concentration or re-oxidation of Ti3+ to Ti4+ below 2% O-2 concentration. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 36
页数：8
相关论文
共 50 条
  • [21] Selective catalytic reduction of NO by NH3 over a Ce/TiO2 catalyst
    Xu, Wenqing
    Yu, Yunbo
    Zhang, Changbin
    He, Hong
    CATALYSIS COMMUNICATIONS, 2008, 9 (06) : 1453 - 1457
  • [22] Promotion effect of tungsten oxide on photo-assisted selective catalytic reduction of NO with NH3 over TiO2
    Yamazoe, Seiji
    Masutani, Yasuyuki
    Teramura, Kentaro
    Hitomi, Yutaka
    Shishido, Tetsuya
    Tanaka, Tsunehiro
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 83 (1-2) : 123 - 130
  • [23] Orthogonal Experimental Study on Preparation Conditions of V2O5/TiO2 Catalysts for the SCR of NO with NH3
    Ren, Bing-nan
    Yang, Qiao-wen
    Lu, Li-na
    ADVANCED MATERIAL SCIENCE AND TECHNOLOGY, PTS 1 AND 2, 2011, 675-677 : 1031 - 1034
  • [24] Kinetics of the selective reduction of NO with NH3 over a V2O5(WO3)/TiO2 commercial SCR catalyst
    Kamata, H
    Takahashi, K
    Odenbrand, CUI
    JOURNAL OF CATALYSIS, 1999, 185 (01) : 106 - 113
  • [25] Detailed kinetic modeling of NH3 SCR over Cu-ZSM-5
    Sjovall, Hanna
    Blint, Richard J.
    Olsson, Louise
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 92 (1-2) : 138 - 153
  • [26] A theoretical analysis of NH3 adsorption on TiO2
    Markovits, A
    Ahdjoudj, J
    Minot, C
    SURFACE SCIENCE, 1996, 365 (03) : 649 - 661
  • [27] Novel Photocatalytic NH3 Synthesis by NO3- Reduction over CuAg/TiO2
    Kato, Ryota
    Furukawa, Mai
    Tateishi, Ikki
    Katsumata, Hideyuki
    Kaneco, Satoshi
    CHEMENGINEERING, 2019, 3 (02) : 1 - 13
  • [28] Dual Effect of Sulfation on the Selective Catalytic Reduction of NO with NH3 over MnOx/TiO2: Key Factor of NH3 Distribution
    Yang, Shijian
    Qi, Feihong
    Liao, Yong
    Xiong, Shangchao
    Lan, Yi
    Fu, Yuwu
    Shan, Wenpo
    Li, Junhua
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2014, 53 (14) : 5810 - 5819
  • [29] Reaction mechanism for SCR of NO with NH3 by supported V2O5-WO3/TiO2 catalysts
    Zhu, Minghui
    Ford, Michael
    Tumuluri, Uma
    Wu, Zili
    Wachs, Israel
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2017, 253
  • [30] Photoemission Study of N-Doped TiO2(110) with NH3
    Kim, Yu Kwon
    Park, Sangmin
    Kim, Ki-Jeong
    Kim, Bongsoo
    JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (38): : 18618 - 18624
12345