Effect of oxygen on selective catalytic reduction of NO by NH3 over copper ion exchanged mordenite-type zeolite catalyst

被引：22

作者：

Ham, SW

Choi, H

Nam, IS

Kim, YG

机构：

[1] POHANG UNIV SCI & TECHNOL,RES CTR CATALYT TECHNOL,DEPT CHEM ENGN,SCH ENVIRONM ENGN,POHANG 790330,SOUTH KOREA

[2] RES INST IND SCI & TECHNOL,POHANG 790330,SOUTH KOREA

来源：

CATALYSIS LETTERS | 1996年 / 42卷 / 1-2期

关键词：

selective catalytic reduction; nitric oxide; copper exchanged mordenite; electron spin resonance (ESR);

D O I：

10.1007/BF00814464

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 effect of oxygen on the selective catalytic reduction of NO by NH3 was examined over a copper exchanged mordenite type zeolite catalyst. The catalytic activity for NO reduction by NH3 in the presence of oxygen was at least one order of magnitude higher than that in the absence of oxygen and it was fully reversible with respect to the presence of oxygen in the feed gas stream. Based upon ESR, TPD, TPO and TPSR studies, the redox behavior of copper ions was closely related to the enhancement of NO removal activity by the introduction of oxygen to the feed gases.

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页码：35 / 40

页数：6

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