NOX sensors

Zirconia solid electrolyte and zinc oxide sensing electrodes were used as a high-temperature NOx sensor [470, 471]. The response of the electrode potential was linear for the logarithm of NOx (NO) concentration from 40 to 450 ppm. 

FIGURE 9.4 Cross section of the laminated-type NOx sensor using a YSZ-based oxidation-catalyst electrode. (From Ono et al., 2004. Solid State Ionics. 175, 503-506, with permission.)... 

Yao, S. and Stetter, J.R. (2005) Solid-state NOx sensor based on surface modifications of the solid electrolyte. Proceedings of the Electrochemical Society, 2000-52 Solid-State Ionic Devices II Ceramic Sensors, The Electrochemical Society, Pennington. New Jersey, pp. 252-60. 

Kurosawa, H., Yan, Y., Miura, N. and Yamazoe, N. (1995) Stabilized zirconia-based NOx sensor operative at high temperature. Solid State Ionics, 79, 558 5. 

Skelton, D.C., Tobin, R.G., Lambert, D.K., DiMaggio, C.L. and Fisher, G.B. (2003) A surface-science-based model for the selectivity of platinum-gold alloy electrodes in zirconia-based NOx sensors. Sens. Actuators B, 96 (1-2), 46-52. 

Nakamura, T, Sakamoto, Y., Saji, K. and Sakata, J. (2003) NOx decomposition mechanism on the electrodes of a zirconia-based amperometric NOx sensor. Sens. Actuators B, 93, 214-20. 

Kubinski, D.J., Visser, J.H., Soltis, R.E., Parsons, M.H., Nietering, K.E. and Ejakov, S.G. (2002) Zirconia based potentiometric NOx sensor utilizing Pt and Au electrodes. Ceram. Trans., 130 (Chemical Sensors for Hostile Environments), 11-18. 

Nagao, M., Namekata, Y., Hibino, T., Sano, M. and Tomita, A. (2006) Intermediate-temperature NOx sensor based on an In +-doped SnP2O7 proton conductor. Electrochem. Solid-State Lett.,... 

Ono, T, Hasei, M., Kunimoto, A. and Miura, N. (2004) Improvement of sensing performances of zirconia-based total NOx sensor by attachment of oxidation-catalyst electrode. Solid State Ionics, 75 (1-4). 503-6. 

Miura, N., Lu, G, and Yamazoe, N. (1998) High-temperature potentiometric/ amperometric NOx sensors combining stabilized zirconia with mixed-metal oxide electrodes. Sens. Actuators B, 52, 169-78. 

Grilli, M.L., Di Bartolomeo, E. and Traversa, E. (2001) Electrochemical NOx sensors based on interfacing nanosized LaFeOj perovskite-type oxide and ionic conductors. J. Electrochem. Soc., 148 (9), H98-102. 

Yang, J.-C. and Dutta, P.K (2006) Promoting selectivity and sensitivity for a high temperature YSZ-based electrochemical total NOx sensor by using a Pt-loaded zeolite Y filter. Sens. Actuators... 

Dutta, A. and Ishihara, T. (2005) Amperometric NOx sensor based on oxygen pumping current by using LaCaOj-based solid electrolyte for monitoring exhaust gas. Sens. Actuators B, 108 (1-2), 309-13. 

Miura, N., Nakatou, M. and Zhuiykov, S. (2002) Impedance-based total-NOx sensor using stabilized zirconia and ZnCr2O4 sensing electrode operating at high temperature. Electrochem. Commun., 4 (4), 284-7. 

Miura, N., Koga, T, Nakatou, M., Elumalai, P. and Hasei, M. (2006) Electrochemical NOx sensors based on stabilized zirconia Comparison of sensing performances of mixed-potential-type and impedancemetric NOx./. Electroceram., 17, 979-86. 

Stranzenbach, M., Gramckow, E. and Saruhan, B. (2007) Planar, impedancemetric NOx-sensor with spinel-type SE for high temperature applications. Sens. Actuators B, 127, 224—30. 

Zhuiykov, S. and Miura, N. (2007) Development of zirconia-based potentiometric NOx sensors for automotive and energy industries in the early 21 century What are the prospects for sensors Sens. Actuators B, 121 (2), 639-51. 

Zhuiykov, S. et al.. High-temperature NOx sensors using zirconia and zinc-famUy oxide sensing electrode. Solid State Ionics 152 (2002) 801-807. 

Finally, the NO converted to NO2 can be measured by the mixed-potential-type NOx sensor using an oxide-sensing electrode. 

Typical Examples of the SE Materials for Potentiometric Mixed-Potential-Type NOx Sensors Reported by Different Authors... 

Elumalai, P. et al.. Sensing characteristics of YSZ-based mixed-potential-type planar NOx sensor using NiO sensing electrodes sintered at different temperatures, J. Elec-trochem. Soc. 152 (2005) H95-H101. 

There are two main driving forces for the development of NOx sensors. 

Fig. 7.16.1 Arrangement of exhaust after-treatment system using NOx sensor...

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