Selective catalytic reduction of NOx on VCuMn/TiO2 at Middle-low temperature

被引：0

作者：

Chen Zhihang ^{[1
]}

Tang Zhixiong ^{[1
]}

Cen Chaoping ^{[1
]}

Zeng Huanmu ^{[1
]}

Chen Dingsheng ^{[1
]}

Fang Ping ^{[1
]}

机构：

[1] Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China

来源：

ADVANCES IN CHEMICAL ENGINEERING II, PTS 1-4 | 2012年 / 550-553卷

关键词：

VCuMn/TiO2; Middle-low temperature; selective catalytic reduction; NOx; NH3; NH3;

D O I：

10.4028/www.scientific.net/AMR.550-553.128

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this dissertation, combinatorial chemistry was adopted, and the activities of a series of VCuMn/TiO2 catalysts prepared by impregnation method for middle-low temperature SCR of NO were evaluated. The activity datas showed that 2V2Cu8Mn/TiO2 exhibited better activity. At 200 degrees C, above 70% NOx conversion were both obtained with a gas hourly space velocity of 60,000 h(-1), and NOx conversion of 2V2Cu8Mn/TiO2 reached nearly 100% at 275-325 degrees C. The X-ray diffraction characterization showed that the CuO and Mn2O3 phases in VCuMn/TiO2 catalysts were the main active site and with better SCR activity at middle-low temperature. In addition, sulfur-resistance of VCuMn/TiO2 catalysts were investigated, NOx conversion on 2V2Cu8Mn/TiO2 was above 60% at 250 degrees C after feeding SO2 (600 ppm). It can be concluded that the modified VCu/TiO2 catalyst by adding manganese obtained a good de-NOx activity in a high sulfur content gas stream.

引用

页码：128 / 131

页数：4

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