Nitrogen-promoted active carbons as DeNOx catalysts -: 1.: The influence of modification parameters on the structure and catalytic properties

被引：39

作者：

Grzybek, T. ^{[1
]}

Klinik, J. ^{[1
]}

Samojeden, B. ^{[1
]}

Suprun, V. ^{[2
]}

Papp, H. ^{[2
]}

机构：

[1] AGH Univ Sci & fechnol, Fac Fuels & Energy, PL-30059 Krakow, Poland

[2] Univ Leipzig, Fac Chem & Mineral, Inst Tech Chem, D-04103 Leipzig, Germany

来源：

CATALYSIS TODAY | 2008年 / 137卷 / 2-4期

关键词：

DeNO(x); active carbon; N surface groups;

D O I：

10.1016/j.cattod.2007.11.009

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The influence of modification by post-treatment of active carbon with ammonia or urea on catalytic reduction of NO with ammonia a was studied. The amount of nitrogen introduced into the structure depended on the pre-treatment of active carbon. The formed N-species were mainly pyridinic or pyrrole/pyridone in nature. No amine, amide or cyano species were found. Both modification procedures (ammonia or urea) led to the increase in activity in SCR and selectivity to N-2. The extent of the improvement depended on the pre-oxidation of active carbon before N-introduction and was higher for urea than ammonia treatment. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：228 / 234

页数：7