Paper Title:
Preparation and Evaluation of Fe2O3/Ceramic Composites for Flue Gas Desulfurization
  Abstract

Ceramic supported ferric oxide composites were synthesized by impregnation- precipitation (I) and sol-gel (II) methods using FeSO4 as a precursor. We investigated the effect of the calcination temperatures on the structure, morphology, and agglomeration of supported ferric oxide. It has been found that Fe2O3 was stabilized when the as-synthesized composites were calcinated at 330-360 °C under 10% (v/v) O2/N2 mixture, and the calcination temperature was chosen as 350°C . The SEM images demonstrated that for the composite I, which was prepared by method (I), Fe2O3 nanoparticles were distributed on the surface and pores of the ceramic; while for the composite II, which was synthesized by method (II), Fe2O3 thin layer was covered the surface of the ceramic. EDS analysis showed 7.9% (wt) ferric oxide had been supported on the composite I and up to 13.3% (wt) ferric oxide on the composite II. XPS analysis revealed that the valence of iron was +3 on both composites. Fe2O3/ceramic composites were used as the catalysts for low temperature wet Flue Gas Desulphurization (FGD), and demonstrated higher SO2 removal efficiency. Because of the excellent hydrophilicity of ceramic and high dispersibility of Fe2O3 on ceramic surface, this catalyst had high SO2 removal efficiency at 60°C even at pH2O3/ceramic composites, prepared by a simple, reproducible impregnation-precipitation and sol-gel method, was an inexpensive, active catalyst for S(IV) catalytic oxidation in wet FGD process in an economical feasible temperature range.

  Info
Periodical
Chapter
Chapter 7: Functional Materials
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
1410-1413
DOI
10.4028/www.scientific.net/AMM.117-119.1410
Citation
X. Min, J. J. Bian, S. Zhang, C. H. Li, L. J. Feng, "Preparation and Evaluation of Fe2O3/Ceramic Composites for Flue Gas Desulfurization", Applied Mechanics and Materials, Vols. 117-119, pp. 1410-1413, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: K. Konopka
Abstract:The present paper is focused on ceramic–metal composites obtained via different technologies which leads to different microstructures in...
139
Authors: Shu Hua Li, Fu Chi Wang
Abstract:The ceramic coating was formed by micro-plasma arc oxidation (MPAO) on AZ91D magnesium alloy. The surface and section morphology of coatings...
2451
Authors: Y.Z. Li, Jun Zhao
Abstract:A model for designing sandwich nanocomposite ceramic tool materials with symmetrical distribution was presented. By adding nano-sized Al2O3...
1126
Authors: Peng Liu, Lian Qi Wei, Shu Feng Ye, Xun Zhou, Yu Sheng Xie, Yun Fa Chen
Abstract:In this paper, the new high temperature ceramic matrix coating of anti-oxidation for stainless steel was prepared by slurry method. With the...
448
Authors: Yu Zhu, Feng Huang, Shu Gang Sun, Hong Jun Ni
Composites
Abstract:Ceramic-lined steel pipes were made by adding nano-SiO2, Na2B4O7 additives into...
105