Riyan Zahaf1, Jae Wook Jung1, Zachary Coker2, Songkil Kim3, Tae-Youl Choi2, Donggeun Lee 1

  • 1 School of Mechanical Engineering, Pusan Clean Coal Center, Pusan National University, Busan 609-735, Korea
  • 2 Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76207, USA
  • 3 School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA

Received: April 10, 2015
Revised: June 15, 2015
Accepted: August 19, 2015
Download Citation: ||https://doi.org/10.4209/aaqr.2015.03.0202  

  • Download: PDF

Cite this article:
Zahaf, R., Jung, J.W., Coker, Z., Kim, S., Choi, T.Y. and Lee, D. (2015). Pt Catalyst over SiO2 and Al2O3 Supports Synthesized by Aerosol Method for HC-SCR DeNOx Application. Aerosol Air Qual. Res. 15: 2409-2421. https://doi.org/10.4209/aaqr.2015.03.0202


  • Well dispersed Pt nanodots over SiO2 and Al2O3 spherical supports are formed.
  • Formation mechanisms of Pt dots for both cases are clarified with calculation.
  • Based on FTIR measurements, details of HC-SCR are better understood.



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 (~250°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 N2 in Pt/SiO2 and Pt/Al2O3 catalysts are 29.8% and 55.8% at 250°C, respectively.

Keywords: Aerosol; Pt/SiO2; Pt/Al2O3; DeNOx Catalyst

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

81st percentile
Powered by

2020 Impact Factor: 3.063
5-Year Impact Factor: 2.857

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.