Promoting Effect of Pt Addition to V2O5/ZrO2 Catalyst on Reduction of NO by C3H6

被引：0
作者：
Takashi Ohno
Eiji Tanaka
Fumikazu Hatayama
Yoshio Toda
Hisashi Miyata
机构：
[1] Kobe University,Department of Biofunctional Chemistry
[2] Nada,Department of Industrial Chemistry
[3] Osaka Prefectural College of Technology,Department of Information Science
[4] Neyagawa,undefined
[5] Hiroshima Prefectural University,undefined
[6] Shobara,undefined
来源：
Catalysis Letters | 2001年 / 77卷
关键词：
promoting effect; Pt addition; V; O; /ZrO; catalysts; NO reduction; C; H; Pt cluster; FTIR;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of Pt addition to a V2O5/ZrO2 catalyst on the reduction of NO by C3H6 has been studied by FTIR spectroscopy as well as by analysis of the reaction products. Pt loading promoted the catalytic activity remarkably. FTIR spectra of NO adsorbed on the catalysts doped with Pt show the presence of two different types of Pt sites, Pt oxide and Pt cluster, on the surface. The amount of these sites depends on Pt contents and the catalyst state. Pt atoms highly disperse on the surface as Pt oxide at low Pt content, being aggregated into Pt metal clusters by increasing Pt amount or reducing the catalysts. The spectral behavior of V=O bands on the surface also supports the formation of Pt clusters. It is concluded that Pt promotes the NO–C3H6 reaction through a reduction–oxidation cycle between its oxide and cluster form.
引用
收藏
页码：183 / 187
页数：4
相关论文
共 50 条
[31]   Dispersion and reactivity of V2O5 catalysts supported on Al2O3-ZrO2 [J].
Chary, KVR ;
Kumar, CP ;
Rao, PVR ;
Rao, VV .
CATALYSIS COMMUNICATIONS, 2004, 5 (09) :479-484
[32]   Operando X-ray Absorption Spectroscopy Study of Pt/γ-Al2O3 During the Total Oxidation of C3H6 [J].
Toshitaka Tanabe ;
Yasutaka Nagai ;
Kazuhiko Dohmae ;
Nobuyuki Takagi ;
Naoki Takahashi ;
Hirohumi Shinjoh .
Topics in Catalysis, 2009, 52 :1433-1439
[33]   Highly Efficient Mesoporous V2O5/WO3–TiO2 Catalyst for Selective Catalytic Reduction of NOx: Effect of the Valence of V on the Catalytic Performance [J].
Luyao Zong ;
Fang Dong ;
Guodong Zhang ;
Weiliang Han ;
Zhicheng Tang ;
Jiyi Zhang .
Catalysis Surveys from Asia, 2017, 21 :103-113
[34]   Acidic properties of V2O5-WO3/ZrO2 catalysts [J].
Toda, Y ;
Ohno, T ;
Hatayama, F ;
Miyata, H .
REACTION KINETICS AND CATALYSIS LETTERS, 1998, 65 (02) :213-217
[35]   Effect of Fe-zeolite on formation of N2O in selective reduction of NO by NH3 over V2O5–WO3/TiO2 catalyst [J].
Moon Hyeon Kim ;
Hyo Sang Lee .
Research on Chemical Intermediates, 2016, 42 :171-184
[36]   Micro-kinetics of NOx storage and reduction with H2/CO/C3H6 on Pt/BaO/Al2O3 monolith catalysts [J].
Kota, Arun S. ;
Luss, Dan ;
Balakotaiah, Vemuri .
CHEMICAL ENGINEERING JOURNAL, 2015, 262 :541-551
[37]   Selective NOx Reduction During the H2 + NO + O2 Reaction Under Oxygen-Rich Conditions Over Pd/V2O5/Al2O3: Evidence for In Situ Ammonia Generation [J].
Norman Macleod ;
Richard M. Lambert .
Catalysis Letters, 2003, 90 :111-115
[38]   Liquid Phase Hydrogenation of Nitrobenzene to Para-Aminophenol over Pt/ZrO2 Catalyst and SO42−/ZrO2–Al2O3 Solid Acid [J].
Pingle Liu ;
Yaohua Hu ;
Min Ni ;
Kuiyi You ;
Hean Luo .
Catalysis Letters, 2010, 140 :65-68
[39]   Effect of WO3 Addition Process on V2O5/TiO2 Monolithic Catalysts [J].
He, Yuanyuan ;
Liu, Qingcai ;
Yang, Jian ;
Xi, Wenchang .
ASIAN JOURNAL OF CHEMISTRY, 2013, 25 (11) :5912-5916
[40]   Preparation and characterization of H3PW12O40/ZrO2 catalyst for carbonation of methanol into dimethyl carbonate [J].
Chao Lung Chiang ;
Kuen Song Lin ;
Ssu-Han Yu .
Research on Chemical Intermediates, 2018, 44 :3797-3811
12345