Effect of framework charge density on catalytic activity of copper loaded molecular sieves of chabazite structure in nitrogen(II) oxide decomposition

被引：5

作者：

Dedecek, J ^{[1
]}

Vondrová, A ^{[1
]}

Cejka, J ^{[1
]}

机构：

[1] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, CR-18223 Prague 8, Czech Republic

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 2000年 / 65卷 / 03期

关键词：

NO decomposition; Cu ion; chabazite; ZnAlPO-34; molecular sieve; zeolites; heterogeneous catalysis;

D O I：

10.1135/cccc20000343

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

NO decomposition over Cu-loaded molecular sieves of chabazite structure with different framework negative charge density was investigated. Cu-ZnAlPO-34 with framework charge density (Al + P)/Zn = 15 exhibited high and stable catalytic activity in NO decomposition while Cu-chabazite with Si/Al = 2.7 was inactive. This evidences that the number of aluminum atoms balancing Cu ions in cationic sites controls the catalytic activity of Cu ion. Ions balanced by single framework aluminum atoms exhibit high activity in NO decomposition while ions balanced by two framework aluminum atoms are inactive. Topology of cationic sites is not the limiting parameter for NO decomposition over Cu ions located in molecular sieves.

引用

页码：343 / 351

页数：9

共 36 条

[1] PREPARATION AND CHARACTERIZATION OF THE CU+/ZSM-5 CATALYST AND ITS REACTION WITH NO UNDER UV IRRADIATION AT 275 K - IN-SITU PHOTOLUMINESCENCE, EPR, AND FT-IR INVESTIGATIONS [J].

ANPO, M ;

MATSUOKA, M ;

SHIOYA, Y ;

YAMASHITA, H ;

GIAMELLO, E ;

MORTERRA, C ;

CHE, M ;

PATTERSON, HH ;

WEBBER, S ;

OUELLETTE, S ;

FOX, MA .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (22) :5744-5750

[2] Copper coordination in zeolite-supported lean NOx catalysts [J].

Blint, RJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (50) :19518-19524

[3] CRYSTAL-STRUCTURES OF HYDRATED AND DEHYDRATED FORMS OF A CO(II)-EXCHANGED CHABAZITE [J].

CALLIGARIS, M ;

NARDIN, G ;

RANDACCIO, L .

ZEOLITES, 1984, 4 (03) :251-254

[4] CRYSTAL-STRUCTURES OF THE HYDRATED AND DEHYDRATED FORMS OF A PARTIALLY CESIUM-EXCHANGED CHABAZITE [J].

CALLIGARIS, M ;

MEZZETTI, A ;

NARDIN, G ;

RANDACCIO, L .

ZEOLITES, 1986, 6 (02) :137-141

[5] CATION SITES AND FRAMEWORK DEFORMATIONS IN DEHYDRATED CHABAZITES - CRYSTAL-STRUCTURE OF A FULLY SILVER-EXCHANGED CHABAZITE [J].

CALLIGARIS, M ;

MEZZETTI, A ;

NARDIN, G ;

RANDACCIO, L .

ZEOLITES, 1984, 4 (04) :323-328

[6] CRYSTAL-STRUCTURES OF HYDRATED AND DEHYDRATED FORMS OF A MN(II)-EXCHANGED CHABAZITE [J].

CALLIGARIS, M ;

MEZZETTI, A ;

NARDIN, G ;

RANDACCIO, L .

ZEOLITES, 1985, 5 (05) :317-319

[7] NATURE OF ACTIVE SPECIES IN COPPER-BASED CATALYSTS AND THEIR CHEMISTRY OF TRANSFORMATION OF NITROGEN-OXIDES [J].

CENTI, G ;

PERATHONER, S .

APPLIED CATALYSIS A-GENERAL, 1995, 132 (02) :179-259

[8] Geometry of the Cu+ 540 nm luminescence centres in zeolites [J].

Dedecek, J ;

Wichterlová, B .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (04) :629-637

[9] Catalytic activity of Cu-MeAlPO-11 in NO decomposition [J].

Dedecek, J ;

Cejka, J ;

Wichterlova, B .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 15 (3-4) :233-240

[10] Catalytic activity of Cu ion-exchanged metalloaluminophosphates in NO decomposition [J].

Dedecek, J ;

Vondrova, A ;

Cejka, J .

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS, 1998, 63 (11) :1755-1768

← 1 2 3 4 →