On the promotion of Ag/γ-Al2O3 by Cs for the SCR of NO by C3H6

被引：53

作者：

Son, IH ^{[1
]}

Kim, MC

Koh, HL

Kim, KL

机构：

[1] Univ Alabama, Dept Chem Engn, Tuscaloosa, AL 35487 USA

[2] Chongju Univ, Dept Environm Engn, Chonju 360764, South Korea

[3] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea

来源：

CATALYSIS LETTERS | 2001年 / 75卷 / 3-4期

关键词：

silver; alumina; Cs; NO reduction; C3H6;

D O I：

10.1023/A:1016796022644

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 [物理化学]; 081704 [应用化学];

摘要：

The promotion of Ag/gamma -Al2O3 by adding alkali metals (Li, Na, K, Cs) for selective catalytic reduction of NO with C3H6 was studied in this work. The activity of NO reduction was enhanced by addition of Cs to Ag/gamma -Al2O3 in the presence of excess oxygen and SO2. The stability and growth of silver oxide particles were promoted and the dispersion of silver particles on gamma -Al2O3 was improved by the addition of 0.5 wt% Cs and 1 wt% Cs to 2 wt% Ag/gamma -Al2O3, respectively. The results were confirmed by H-2 TPR, UV-Vis DRS, TEM, and XPS.

引用

收藏

页码：191 / 197

页数：7

相关论文

共 38 条

[1]

Characterization of highly active silver catalyst for NOx reduction in lean-burning engine exhaust [J].

Aoyama, N ;

Yoshida, K ;

Abe, A ;

Miyadera, T .

CATALYSIS LETTERS, 1997, 43 (3-4) :249-253

[2]

Supported Ag catalysts for the lean reduction of NO with C3H6 [J].

Bethke, KA ;

Kung, HH .

JOURNAL OF CATALYSIS, 1997, 172 (01) :93-102

[3]

A comparison of the selective catalytic reduction of NOx over Al2O3 and sulphated Al2O3 using CH3OH and C3H8 as reductants [J].

Burch, R ;

Halpin, E ;

Sullivan, JA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 17 (1-2) :115-129

[4]

Mechanistic considerations for the reduction of NOx over Pt/Al2O3 and Al2O3 catalysts under lean-burn conditions [J].

Burch, R ;

Sullivan, JA ;

Watling, TC .

CATALYSIS TODAY, 1998, 42 (1-2) :13-23

[5]

In situ diffuse reflectance infrared Fourier transform spectroscopy study of surface species involved in NOx reduction by ethanol over alumina-supported silver catalyst [J].

Chafik, T ;

Kameoka, S ;

Ukisu, Y ;

Miyadera, T .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 136 (02) :203-211

[6]

The effect of CH4, H2O and SO2 on the NO reduction with C3H6 [J].

Efthimiadis, EA ;

Lionta, GD ;

Christoforou, SC ;

Vasalos, IA .

CATALYSIS TODAY, 1998, 40 (01) :15-26

[7]

Synthesis of methylamines from CO2, H-2 and NH3. Catalytic behaviour of various metal-alumina catalysts [J].

Gredig, SV ;

Koeppel, RA ;

Baiker, A .

APPLIED CATALYSIS A-GENERAL, 1997, 162 (1-2) :249-260

[8]

SILVER-PROMOTED COBALT OXIDE CATALYSTS FOR DIRECT DECOMPOSITION OF NITROGEN MONOXIDE [J].

HAMADA, H ;

KINTAICHI, Y ;

SASAKI, M ;

ITO, T .

CHEMISTRY LETTERS, 1990, (07) :1069-1070

[9]

SULFATE-PROMOTED METAL-OXIDE CATALYSTS FOR THE SELECTIVE REDUCTION OF NITROGEN MONOXIDE BY PROPANE IN OXYGEN-RICH ATMOSPHERE [J].

HAMADA, H ;

KINTAICHI, Y ;

TABATA, M ;

SASAKI, M ;

ITO, T .

CHEMISTRY LETTERS, 1991, (12) :2179-2182

[10]

Infrared study of catalytic reduction of nitrogen monoxide by propene over Ag/TiO2-ZrO2 [J].

Haneda, M ;

Kintaichi, Y ;

Inaba, M ;

Hamada, H .

CATALYSIS TODAY, 1998, 42 (1-2) :127-135

← 1 2 3 4 →