Mode of zeolite catalysts deactivation during chlorinated VOCs oxidation

被引：43

作者：

Guillemot, M. ^{[1
]}

Mijoin, J. ^{[1
]}

Mignard, S. ^{[1
]}

Magnoux, P. ^{[1
]}

机构：

[1] Univ Poitiers, CNRS, UMR 6503, Catalyse Chim Organ Lab, F-86022 Poitiers, France

来源：

APPLIED CATALYSIS A-GENERAL | 2007年 / 327卷 / 02期

关键词：

deactivation; catalytic oxidation; chlorinated VOCs; zeolite; FAU;

D O I：

10.1016/j.apcata.2007.05.012

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：

The catalytic oxidation of tetrachloroethylene (PCE), chosen as model for chlorinated hydrocarbons, was investigated over WHY, Pt/NaY and Pt/NaX under humid conditions at a space velocity of 15,300 h(-1). PCE is selectively transformed into carbon dioxide (CO2) and hydrochloric acid (HQ over all catalysts studied in this work. 1.2%Pt/HY exhibits the highest activity with the complete conversion of PCE at 500 degrees C and undergoes no significant deactivation after 4 h of reaction. It was also highlighted in this work, that water vapour plays a preponderant role for PCE transformation and limits catalyst deactivation. On the other hand, platinum-exchanged sodic faujasites (Pt/NaFAU) are also active in PCE transformation but it appeared that 1%Pt/NaX underwent a high and rapid deactivation by the formation of sodium chloride (NaCl) clusters. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：211 / 217

页数：7

共 36 条

[1] FTIR spectroscopic study of CO adsorption on Pt-H-ZSM-5 [J].

Chakarova, K ;

Mihaylov, M ;

Hadjiivanov, K .

MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 81 (1-3) :305-312

[2] OXIDATIVE CATALYSIS OF CHLORINATED HYDROCARBONS BY METAL-LOADED ACID CATALYSTS [J].

CHATTERJEE, S ;

GREENE, HL .

JOURNAL OF CATALYSIS, 1991, 130 (01) :76-85

[3] Influence of the metal and of the support on the activity and stability of bifunctional catalysts for toluene hydrogenation [J].

Chupin, J ;

Gnep, NS ;

Lacombe, S ;

Guisnet, M .

APPLIED CATALYSIS A-GENERAL, 2001, 206 (01) :43-56

[4] LEWIS-ACID SITES AND SURFACE ALUMINUM IN ALUMINAS AND ZEOLITES - A HIGH-RESOLUTION NMR-STUDY [J].

COSTER, D ;

BLUMENFELD, AL ;

FRIPIAT, JJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (24) :6201-6211

[5] Catalytic combustion of volatile organic compounds [J].

Everaert, K ;

Baeyens, J .

JOURNAL OF HAZARDOUS MATERIALS, 2004, 109 (1-3) :113-139

[6] Mechanism of catalytic destruction of 1,2-dichloroethane and trichloroethylene over γ-Al2O3 and γ-Al2O3 supported chromium and palladium catalysts [J].

Feijen-Jeurissen, MMR ;

Jorna, JJ ;

Nieuwenhuys, BE ;

Sinquin, G ;

Petit, C ;

Hindermann, JP .

CATALYSIS TODAY, 1999, 54 (01) :65-79

[7] NEW CATALYST TECHNOLOGIES FOR THE DESTRUCTION OF HALOGENATED HYDROCARBONS AND VOLATILE ORGANICS [J].

FREIDEL, IM ;

FROST, AC ;

HERBERT, KJ ;

MEYER, FJ ;

SUMMERS, JC .

CATALYSIS TODAY, 1993, 17 (1-2) :367-382

[8] Activity and product distribution of alumina supported platinum and palladium catalysts in the gas-phase oxidative decomposition of chlorinated hydrocarbons [J].

González-Velasco, JR ;

Aranzabal, A ;

Gutiérrez-Ortiz, JI ;

López-Fonseca, R ;

Gutiérrez-Ortiz, MA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 19 (3-4) :189-197

[9]

Guisnet M, 1997, POL J CHEM, V71, P1455

[10] Combustion of aliphatic C2 chlorohydrocarbons over ceria-zirconia mixed oxides catalysts [J].

Gutiérrez-Ortiz, JI ;

de Rivas, B ;

López-Fonseca, R ;

González-Velasco, JR .

APPLIED CATALYSIS A-GENERAL, 2004, 269 (1-2) :147-155

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