Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-28T16:06:45.404Z Has data issue: false hasContentIssue false
  • English
  • Français

Zeolite H-ZSM-5: A Microporous Proton Conductor for the in situ Monitoring of DeNOx-SCR

Published online by Cambridge University Press:  30 August 2011

Thomas Simons  and
Ulrich Simon
Thomas Simons
Affiliation:
Institut für Anorganische Chemie and JARA – Future Information Technology, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Ulrich Simon
Affiliation:
Institut für Anorganische Chemie and JARA – Future Information Technology, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Get access

Abstract

Impedance spectroscopy was applied on zeolite H-ZSM 5 as a proton conducting NH3 sensor material and DeNOx-SCR (selective catalytic reduction of NOx with NH3) catalysts at the same time under SCR conditions. We show that in situ monitoring of the NH3 conversion with NOx becomes feasible when the zeolite is loaded with NH3 first and NOx is applied afterwards to the gas phase. Temperature dependent measurements allow discriminating NH3 desorption from catalytic conversion and time dependent measurement give first hints on the thermal activation of the conversion.

Keywords

zeoliteionic conductorcatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1330: Symposium J – Protons in Solids , 2011 , mrss11-1330-j01-03-k03-03
Copyright
Copyright © Materials Research Society 2011

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. Franke, M.E., Simon, U. Solid State Ionics, 118, 311–316 (1999)Google Scholar
2. Franke, M.E., Simon, U., Moos, R., Knezevic, A., Müller, R., Plog, C. Phys. Chem. Chem. Phys., 5, 5195–5198 (2003)Google Scholar
3. Franke, M.E., Simon, U. Chem. Phys. Chem., 5, 465–472 (2004)Google Scholar
4. Franke, M.E., Sierka, M., Simon, U., Sauer, J. Phys. Chem. Chem. Phys., 4, 5207–5216 (2004)Google Scholar
5. Franke, M.E., Sierka, M., Sauer, J., Simon, U. “A Computational Study of the Translational Motion of Protons in Zeolite H-ZSM-5”, in Mat. Res. Soc. Symp. Proc. Fall Meeting 2000 Vol. 658, ed. Geselbracht, M.J., Greedan, J.E., Johnson, D.C., Subramanian, M.A. (Materials Research Society, 2001) pp. GG7.4.1-GG7.4.5Google Scholar
6. Moos, R., Sahner, K., “Chemical sensors based on zeolites”, in Chemical sensors ed. Schwank, J., Korotcenko, G. (Momentum Press, 2011) pp. 311–334Google Scholar
7. Trautwein, W.P., AdBlue as a reducing agent for the decrease of NOx emissions from diesel engines of commercial vehicles (DGMK Research Report 616–1, 2003)Google Scholar
8. Tschoeke, H. et al. ., “Diesel Engine Exhaust Emissons”, Handbook of Diesel Engines, ed. Mollenhauer, K., Tschoeke, H. (Springer, 2010) pp. 417–485Google Scholar
9. Kubinski, D., J. Visser Sens. Actuators B, 130, 425–429 (2008)Google Scholar
10. Simon, U., Sanders, D., Jockel, J., Heppel, C., Brinz, T. J. Comp. Chem., 4, 511–515 (2002)Google Scholar
11. Rodríguez-González, L., Simon, U., Meas. Sci. Technol., 21, 027003 (2010)Google Scholar
12. Rodríguez-González, L., Rodríguez-Castellón, E., Jiménez-López, A., Simon, U. Solid State Ionics, 179, 1968–1970 (2008)Google Scholar