SELECTIVE REDUCTION OF NOX WITH AMMONIA OVER CERIUM-EXCHANGED MORDENITE

被引：47

作者：

ITO, E

HULTERMANS, RJ

LUGT, PM

BURGERS, MHW

RIGUTTO, MS

VANBEKKUM, H

VANDENBLEEK, CM

机构：

[1] DELFT UNIV TECHNOL,DEPT CHEM ENGN,JULIANALAAN 136,2628 BL DELFT,NETHERLANDS

[2] DELFT UNIV TECHNOL,DEPT ORGAN CHEM & CATALYSIS,2628 BL DELFT,NETHERLANDS

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1994年 / 4卷 / 01期

关键词：

AMMONIA; LANTHANIDE-EXCHANGED ZEOLITES; NITROGEN OXIDE REDUCTION; REACTION MECHANISMS;

D O I：

10.1016/0926-3373(94)00009-3

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：

Cerium-exchanged sodium-type mordenite (CeNa-MOR) was studied in comparison with a non-redox lanthanide mordenite (LaNa-MOR) and an acid-type mordenite (H-MOR) for nitric oxide reduction with ammonia in the presence of excess oxygen. The activity of CeNa-MOR was found to be high over a wide temperature range of 250-560-degrees-C. LaNa-MOR showed a similar nitric oxide conversion profile versus temperature as H-MOR, becoming substantially active only above 400-degrees-C. Bronsted acid sites are assumed to be responsible for the catalysis by LaNa-MOR, while over CeNa-MOR, two plausible reaction pathways involving the redox couple (Ce(III)/Ce(IV)) are proposed and discussed.

引用

页码：95 / 104

页数：10

共 21 条

[1]

BOSCH H, 1987, CATAL TODAY, V2

[2]

FLOOR M, 1989, RECL TRAV CHIM PAY B, V108, P128

[3] SELECTIVE REDUCTION OF NITROGEN MONOXIDE WITH PROPANE OVER ALUMINA AND HZSM-5 ZEOLITE - EFFECT OF OXYGEN AND NITROGEN-DIOXIDE INTERMEDIATE [J].

HAMADA, H ;

KINTAICHI, Y ;

SASAKI, M ;

ITO, T ;

TABATA, M .

APPLIED CATALYSIS, 1991, 70 (02) :L15-L20

[4]

HELD W, SAE900496 PAP

[5]

HIRSCH PM, 1982, ENVIRON PROG, V1, P24

[6]

HULTERMANS RJ, 1994, 3RD P INT C CAT AUT

[7] MECHANISM OF THE REACTION OF NO AND NH3 ON VANADIUM-OXIDE CATALYST IN THE PRESENCE OF OXYGEN UNDER THE DILUTE GAS CONDITION [J].

INOMATA, M ;

MIYAMOTO, A ;

MURAKAMI, Y .

JOURNAL OF CATALYSIS, 1980, 62 (01) :140-148

[8]

ITO E, 1994, 3RD P INT C CAT AUT

[9]

Iwamoto M., 1990, SHOKUBAI, V32, P430

[10]

KASAI PH, 1967, ACS MONOGR SER, V171, P378

← 1 2 3 →