Low temperature selective catalytic reduction of NO with NH3 over Mn supported on Ce0.65Zr0.35O2 prepared by supercritical method: Effect of Mn precursors on NO reduction

被引：49

作者：

Ko, Jeong Huy ^{[1
]}

Park, Sung Hoon ^{[2
]}

Jeon, Jong-Ki ^{[3
]}

Kim, Seung-Soo ^{[4
]}

Kim, Sang Chai ^{[5
]}

Kim, Ji Man ^{[6
,7
]}

Chang, Daejun ^{[8
]}

Park, Young-Kwon ^{[1
,9
]}

机构：

[1] Univ Seoul, Grad Sch Energy & Environm Syst Engn, Seoul 130743, South Korea

[2] Sunchon Natl Univ, Dept Environm Engn, Sunchon 540742, South Korea

[3] Kongju Natl Univ, Dept Chem Engn, Cheonan 331717, South Korea

[4] Kangwon Natl Univ, Dept Chem Engn, Samcheok 245711, South Korea

[5] Mokpo Natl Univ, Dept Environm Educ, Muan 534729, South Korea

[6] Sungkyunkwan Univ, Dept Energy Sci, Suwon 440746, South Korea

[7] Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea

[8] Korea Adv Inst Sci & Technol, Div Ocean Syst Engn, Taejon 305701, South Korea

[9] Univ Seoul, Sch Environm Engn, Seoul 130743, South Korea

来源：

CATALYSIS TODAY | 2012年 / 185卷 / 01期

关键词：

Low-temperature SCR of NOx; Ce0.65Zr0.35O2 synthesized by hydrothermal synthesis in supercritical water; Mn acetate; Mn nitrate; NITRIC-OXIDE; MANGANESE OXIDES; NITROGEN-OXIDES; SCR; PERFORMANCE; MECHANISM;

D O I：

10.1016/j.cattod.2011.08.007

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

Catalysts for low-temperature selective catalytic reduction were developed using Ce0.65Zr0.35O2 (CZO) generated via hydrothermal synthesis in supercritical water as the support. To evaluate the manganese precursors, which are known to have good de-NOx performance at low temperature, manganese acetate (MA) and manganese nitrate (MN) were impregnated on the CZO support. The developed catalysts were characterized using N-2 adsorption-desorption, TGA, XRD, XPS and TPR. De-NOx experiments were carried out using a NOx analyzer to evaluate the performance of the developed catalysts. The MA-impregnated catalyst exhibited higher de-NOx efficiency than that impregnated with MN. This result was attributed to the difference in crystal phase and concentration of surface Mn and the resulting difference in the reducing ability. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：290 / 295

页数：6

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