Pt Catalyst over SiO2 and Al2O3 Supports Synthesized by Aerosol Method for HC-SCR DeNOx Application

被引：14

作者：

Zahaf, Riyan ^{[1
]}

Jung, Jae Wook ^{[1
]}

Coker, Zachary ^{[2
]}

Kim, Songkil ^{[3
]}

Choi, Tae-Youl ^{[2
]}

Lee, Donggeun ^{[1
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Pusan Clean Coal Ctr, Busan 609735, South Korea

[2] Univ N Texas, Dept Mech & Energy Engn, Denton, TX 76207 USA

[3] Georgia Inst Technol, Sch Mech Engn, Atlanta, GA 30332 USA

来源：

AEROSOL AND AIR QUALITY RESEARCH | 2015年 / 15卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

Pt/SiO2; Pt/Al2O3; Aerosol; DeNOx Catalyst; LEAN-BURN CONDITIONS; PT/AL2O3; CATALYSTS; SELECTIVE REDUCTION; GEL SYNTHESIS; NOX; OXIDE; HYDROCARBONS; OXIDATION; FLAME; C3H6;

D O I：

10.4209/aaqr.2015.03.0202

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Silica-supported platinum (Pt/SiO2) and alumina-supported platinum (Pt/Al2O3) catalysts have been prepared by an aerosol spray pyrolysis method. Systematic characterization of each catalyst using TEM, XRD, and XPS revealed that crystalline and metallic Pt nanoparticles were well dispersed on the surface of silica and alumina supports. The sintering effect on Pt particles over Al2O3 at high temperature (similar to 250 degrees C) is more prominent than those over SiO2; this suggests that there is stronger interaction between Pt particles and SiO2 support, when compared to Pt over Al2O3 support, resulting in Pt particles size below 3 nm. Moreover, steady-state catalytic experiments for selective reduction of nitrogen monoxide by propene have demonstrated that NOx conversions to N2O and N-2 in Pt/SiO2 and Pt/Al2O3 catalysts are 29.8% and 55.8% at 250 degrees C, respectively.

引用

页码：2409 / 2421

页数：13

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