DOI: https://doi.org/10.9767/bcrec.12.1.606.14-23

Analyzing Loose Contact Oxidation of Diesel Engine Soot and Ag/CeO2 Catalyst Using Nonlinear Regression Analysis

1Materials Research Center for Element Strategy, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan

2Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida-cho, Hachioji, 193-0997, Japan

Received: 18 Jul 2016; Revised: 12 Sep 2016; Accepted: 20 Sep 2016; Available online: 13 Feb 2017; Published: 30 Apr 2017.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2017 by Authors, Published by BCREC Group under http://creativecommons.org/licenses/by-sa/4.0.
Fulltext View|Download

Citation Format:
Cover Image
Abstract

Loose contact (LC) oxidation kinetics of carbon black (CB) model soot and Ag/CeO2 catalyst was deduced from thermogravimetric analysis (TG) experiments. In the LC mode at ≧750 K, CB particles were likely to be combusted also by non-catalyzed oxidation, especially those particles located far from the catalyst surface, as well as Ag/CeO2-catalyed oxidation. Since the non-catalyzed oxidation is not due to catalytic activity, in order to deduce the catalytic activity from TG data, a nonlinear regression analysis method was proposed in this study to extract only the catalyzed oxidation part of the TG data. It was verified that this was successfully done with the equations used by the very good curve fits to the experimental TG data, and the catalytic activity was correctly obtained from LC samples with various degrees of physical contact between the CB and catalyst. 

Keywords: soot oxidation; Ag/CeO2; loose contact; nonlinear regression analysis; curve fitting

Article Metrics:

Article Info
Section: Original Research Articles
Language : EN
Recent articles
One-Pot Synthesis of Bi/Fe3O4 and Its Catalytic Performances for 4-Nitrophenol Reduction Gas Phase Oligomerization of Isobutene over Acid Treated Kaolinite Clay Catalyst Preparation and Characterization of Sugar Based Catalyst on Various Supports Back-matter Front-matter Author Guidelines (2017) More recent articles
  1. Stanmore, B.R., Brilhac, J.F., Gilot, P. (2001). The Oxidation of Soot: A Review of Experiments, Mechanisms and Models. Carbon, 39: 2247-2268
  2. Ozawa, T. (1965). A New Method of Analyzing Thermogravimetric Data. Bulletin of the Chemical Society of Japan, 38: 1881-1886
  3. Shimizu, K., Kawachi, H., Satsuma, A. (2010). Study of Active Sites and Mechanism for Soot Oxidation by Silver-loaded Ceria Catalyst. Applied Catalysis B: Environmental, 96: 169-175
  4. Krishna, K., Bueno-Lopez, A., Makkee, M., Moulijn, J.A. (2007). Potential Rare Earth Modified CeO2 Catalysts for Soot Oxidation. I. Characterisation and Catalytic Activity with O2. Applied Catalysis B: Environmental, 75: 189-200
  5. Shimokawa, H., Kurihara, Y., Kusaba, H., Einaga, H., Teraoka, Y. (2012). Comparison of Catalytic Performance of Ag- and K-based Catalysts for Diesel Soot Combustion. Catalysis Today, 185: 99-103
  6. Hasan, M.A., Zaki, M.I., Kumari, K., Pasupulety, L. (1998). Soot Deep Oxidation Catalyzed by Molybdena and Molybdates: A Thermogravimetric Investigation. Thermochimica Acta, 320: 23-32
  7. Russo, N., Fino, D., Saracco, G., Specchia, V. (2005). Studies on the Redox Properties of Chromite Perovskite Catalysts for Soot Combustion. Journal of Catalysis, 229: 459-469
  8. Gilot, P., Bonnefoy, F., Marcuccilli, F., Prado, G. (1993). Determination of Kinetic Data for Soot Oxidation. Modeling of Competition between Oxygen Diffusion and Reaction during Thermogravimetric Analysis. Combustion and Flame, 95: 87-100
  9. Neeft, J.P.A., Hoornaert, F., Makkee, M., Moulijn, J.A. (1996). The Effects of Heat and Mass Transfer in Thermogravimetrical Analysis. A Case Study towards the Catalytic Oxidation of Soot. Thermochimica Acta, 287: 261-278
  10. Mul, G., Neeft, J.P.A., Kapteijn, F., Makkee, M., Moulijn, J.A. (1995). Soot Oxidation Catalyzed by a Cu/K/Mo/Cl Catalyst: Evaluation of the Chemistry and Performance of the Catalyst. Applied Catalysis B: Environmental, 6: 339-352
  11. Neeft, J.P.A., Makkee, M., Moulijn, J.A. (1996). Metal Oxides as Catalysts for the Oxidation of Soot. The Chemical Engineering Journal and the Biochemical Engineering Journal, 64: 295-302
  12. Neeft, J.P.A., Makkee, M., Moulijn, J.A. (1996). Catalysts for the Oxidation of Soot from Diesel Exhaust Gases. I. An Exploratory Study. Applied Catalysis B: Environmental, 8: 57-78
  13. Neeft, J.P.A., van Pruissen, O.P., Makkee, M., Moulijn, J.A. (1997). Catalysts for the Oxidation of Soot from Diesel Exhaust Gases II. Contact between Soot and Catalyst under Practical Conditions. Applied Catalysis B: Environmental, 12: 21-31
  14. van Setten, B.A.A.L., van Dijk, R., Jelles, S. J., Makkee, M., Moulijn, J.A. (1999). The Potential of Supported Molten Salts in the Removal of Soot from Diesel Exhaust Gas. Applied Catalysis B: Environmental, 21: 51-61
  15. van Setten, B.A.A.L., Schouten, J.M., Makkee, M., Moulijn, J.A. (2000). Realistic Contact for Soot with an Oxidation Catalyst for Laboratory Studies. Applied Catalysis B: Environmental, 28: 253-257
  16. Valeria, D.S., Gianluca, L., Luciana, L., Anna, S., Almerinda, D.B. (2016). Catalytic Diesel Particulate Filters with Highly Dispersed Ceria: Effect of the Soot-catalyst Contact on the Regeneration Performance. Applied Catalysis B: Environmental, 197: 116-124
  17. Slovak, V. (2001). Determination of Kinetic Parameters by Direct Non-linear Regression from TG Curves. Thermochimica Acta, 372: 175-182
  18. Espenson, J.H. (1995). Chemical Kinetics and Reaction Mechanisms, Second Edition: McGraw-Hill, Inc.
  19. Darcy, P., Da Costa, P., Mellottee, H., Trichard, J.M., Djega-Mariadassou, G. (2007). Kinetics of Catalyzed and Non-catalyzed Oxidation of Soot from a Diesel Engine. Catalysis Today, 119: 252-256
  20. Bokova, M.N., Decarne, C., Abi-Aad, E., Pryakhin, A.N., Lunin, V.V., Aboukais, A. (2005). Kinetics of Catalytic Carbon Black Oxidation. Thermochimica Acta, 428: 165-171

Last update:

No citation recorded.

Last update:

No citation recorded.