Catalytic oxidation of dichloromethane over Pt/CeO2-Al2O3 catalysts

被引:85
作者
Chen, Qiu-Yan [1 ]
Li, Na [1 ]
Luo, Meng-Fei [1 ]
Lu, Ji-Qing [1 ]
机构
[1] Zhejiang Normal Univ, Inst Phys Chem, Minist Educ Adv Catalysis Mat, Key Lab, Jinhua 321004, Peoples R China
关键词
CeO2-Al2O3; Pt catalysts; Catalytic oxidation; Dichloromethane; Surface acidity; Redox property; COMPLETE BENZENE OXIDATION; ADSORPTION PROPERTIES; CO OXIDATION; TRICHLOROETHYLENE; COMBUSTION; PLATINUM; OXIDE; PD; PERFORMANCES; HYDROCARBONS;
D O I
10.1016/j.apcatb.2012.08.020
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
A series of CeO2-Al2O3 catalysts with different CeO2 contents were prepared by a co-precipitation method, and supported Pt/CeO2-Al2O3 catalysts were also prepared by an impregnation method. These catalysts were tested for catalytic oxidation of dichloromethane (CH2Cl2). It was found that these catalysts were active for the reaction, with a 100% conversion of CH2Cl2 obtained at 410 degrees C over a catalyst with 15% of CeO2. Various characterization results such as ammonia temperature programmed desorption, hydrogen temperature programmed reduction suggested that the catalytic behaviors were synergistically influenced by surface acidity and redox property of the catalysts. An optimal combination of surface acidity and redox property in the catalyst resulted in a high activity. Moreover, the addition of Pt could further enhance the activity, due to the promotion of surface acidity by the introduction of chlorine species in the catalyst during the preparation using H2PtCl6 as the precursor and reducibility of the catalyst probably via the formation of Ce-Pt-O solid solution. (C) 2012 Published by Elsevier B.V.
引用
收藏
页码:159 / 166
页数:8
相关论文
共 32 条
[1]   Synthesis and physicochemical characterizations of nanostructured Pt/Al2O3-CeO2 catalysts for total oxidation of VOCs [J].
Abbasi, Zahra ;
Haghighi, Mohammad ;
Fatehifar, Esmaeil ;
Saedy, Saeed .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 186 (2-3) :1445-1454
[2]   Nanosize gold-ceria catalysts promoted by vanadia for complete benzene oxidation [J].
Andreeva, D ;
Nedyalkova, R ;
Ilieva, L ;
Abrashev, MV .
APPLIED CATALYSIS A-GENERAL, 2003, 246 (01) :29-38
[3]   Stability of protonic zeolites in the catalytic oxidation of chlorinated VOCs (1,2-dichloroethane) [J].
Aranzabal, A. ;
Gonzalez-Marcos, J. A. ;
Romero-Saez, A. ;
Gonzalez-Velasco, J. R. ;
Guillemot, M. ;
Magnoux, P. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 88 (3-4) :533-541
[4]   An alternative way of reporting on the redox behaviour of ceria-based catalytic materials:: Temperature-chemical environment-oxidation state diagrams [J].
Bernal, S ;
Blanco, G ;
Pintado, JM ;
Rodríguez-Izquierdo, JM ;
Yeste, MP .
CATALYSIS COMMUNICATIONS, 2005, 6 (09) :582-585
[5]   Positive effect of NOx on the performances of VOx/TiO2-based catalysts in the total oxidation abatement of chlorobenzene [J].
Bertinchamps, F ;
Treinen, M ;
Blangenois, N ;
Mariage, E ;
Gaigneaux, EM .
JOURNAL OF CATALYSIS, 2005, 230 (02) :493-498
[6]   COMPARISON OF MODIFIED TRANSITION METAL-EXCHANGED ZEOLITE CATALYSTS FOR OXIDATION OF CHLORINATED HYDROCARBONS [J].
CHATTERJEE, S ;
GREENE, HL ;
PARK, YJ .
JOURNAL OF CATALYSIS, 1992, 138 (01) :179-194
[7]   Low-temperature catalytic combustion of trichloroethylene over cerium oxide and catalyst deactivation [J].
Dai, Qiguang ;
Wang, Xingyi ;
Lu, Guanzhong .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 81 (3-4) :192-202
[8]   Catalysis oxidation of 1,2-dichloroethane and ethyl acetate over ceria nanocrystals with well-defined crystal planes [J].
Dai, Qiguang ;
Huang, Hao ;
Zhu, Yu ;
Deng, Wei ;
Bai, Shuxing ;
Wang, Xingyi ;
Lu, Guanzhong .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 117 :360-368
[9]   Effect of CeO2 loading on the surface and catalytic behaviors of CeO2-Al2O3-supported Pt catalysts [J].
Damyanova, S ;
Bueno, JMC .
APPLIED CATALYSIS A-GENERAL, 2003, 253 (01) :135-150
[10]   Effect of structural and acidity/basicity changes of CuO-CeO2 Catalysts on their activity for water-gas shift reaction [J].
Djinovic, Petar ;
Levec, Janez ;
Pintar, Albin .
CATALYSIS TODAY, 2008, 138 (3-4) :222-227