Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-27T03:54:39.043Z Has data issue: false hasContentIssue false
  • English
  • Français

Modification of Cordierite Honeycomb Ceramics Matrix for DeNOx Catalyst

Published online by Cambridge University Press:  21 May 2012

Qingcai Liu ,
Yuanyuan He ,
Jian Yang ,
Wenchang Xi ,
Juan Wen  and
Huimin Zheng
Qingcai Liu
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Yuanyuan He
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Jian Yang
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Wenchang Xi
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Juan Wen
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Huimin Zheng
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400030, China
Get access

Abstract

To obtain highly dispersed and highly active catalysts by impregnating of active species onto the monolith directly, cordierite honeycomb ceramics were modified by nitric acid solution of 68wt%. Effects of acid treatment temperature and time on the performance of cordierite were investigated. Specific surface area, pore size distribution, morphology and structure of cordierite were characterized by N2-physical adsorption, SEM, XRD, respectively. Concentrations of ions in the acid solution were measured by AAS. It is shown that the corrosion content of cordierite increases and more micropores are generated with increasing time of acid treatment, leading to an upward trend of specific surface area. The coefficient of thermal expansion and compression strength decrease obviously at a higher temperature, which is mainly attributed to the removal of Al and Mg ions from the silicate structure and delayed formation of free amorphous silica on the surface of the cordierite. The optimal modification process of cordierite matrix acid erosion is at 110°C for 6 h.

Keywords

corrosionceramicmicrostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1449: Symposium BB – Solution Synthesis of Inorganic Films and Nanostructured Materials , 2012 , mrss12-1449-bb06-38
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Shigapov, A.N., Graham, G.W., McCabe, R.W., Paputa Peck, M. and Kiel Plummer, H., Appl. Cata. A. 182 (1999) 137–146.Google Scholar
2. Elmer, T.H., Selective leaching of extruded cordierite honeycomb structures, Ceram. Eng. Sci. Proc. 7 (1986) 40–51.Google Scholar
3. Tomasic, V. and Jovic, F., Appl. Cata. A. 311 (2006) 112–121.Google Scholar
4. Cimino, S., Pirone, R. and Russo, G., Ind. Eng. Chem. Res. 40 (2001) 80–85.Google Scholar
5. Broekhuis, R.R., Budhlall, B.M. and Nordquist, A.F., Ind. Eng. Chem. Res. 43 (2004) 5146–5155.Google Scholar
6. Avila, P., Montes, M. and Miró, E.E., Chemical Engineering Journal, 109 (2005) 11–36.Google Scholar
7. Skoglundh, M., Johansson, H., Lowendahl, L., Jansson, K., Dahl, L. and Hirschauer, B., Appl. Catal. B. 7 (1996) 299–307.Google Scholar
8. Madhusoodana, C.D., Das, R.N., Kameshima, Y., Yasumori, A. and Okada, K., J. Porous Mater. 8 (2001) 265–271.Google Scholar
9. Liu, Q., Liu, Z. and Huang, Z., Ind. Eng. Chem. Res. 44 (2005) 3497–3502.Google Scholar
10. Bai, J. and Guo, L., J. Wuhan University of Tech. 20(2006) 100–102.Google Scholar
11. Galindo, H., Carvajal, Y. and Suib, S. L., Microporous Mesoporous Mater. 135(2010)37–44.Google Scholar
12. Dong, Y., Feng, X., Dong, D., Wang, S., Yang, J., Gao, J., Liu, X. and Meng, G., J. Membrane Sci. 304 (2007) 65–75.Google Scholar