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Low-temperature Reduction of N2O by H2 over Pt/SiO2 Catalysts
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 Title & Authors
Low-temperature Reduction of N2O by H2 over Pt/SiO2 Catalysts
Kim, Moon Hyeon; Kim, Dae Hwan;
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 Abstract
The present work has been devoted to the catalytic reduction of by with catalysts at very low temperatures, such as , and their nanoparticle sizes have been determined by using titration, X-ray diffraction(XRD) and high-resolution transmission electron microscopy(HRTEM) measurements. A sample of 1.72% , which had been prepared by an ion exchange method, consisted of almost atomic levels of Pt nanoparticles with 1.16 nm that are very consistent with the HRTEM measurements, while a catalyst possessing the same Pt amount via an incipient wetness technique did 13.5 nm particles as determined by the XRD measurements. These two catalysts showed a noticeable difference in the on-stream activity maintenance profiles at . This discrepancy was associated with the nanoparticle sizes, i.e., the catalyst with the smaller particle size was much more active for the reduction. When repeated measurements of the reduction with the 1.16 nm Pt catalyst at were allowed, the catalyst deactivation occurred, depending somewhat on regeneration excursions.
 Keywords
Nitrous oxide(); reduction;Hydrogen();Low temperature;Pt nanoparticles;
 Language
Korean
 Cited by
 References
1.
Benson, J. E., Boudart, M., 1965, Hydrogen-oxygen titration method for the measurement of supported platinum surface area, J. Catal., 4, 704-710. crossref(new window)

2.
Burch, R., Daniells, S. T., Breen, J. P., Hu, P., 2004, A combined transient and computational study of the dissociation of $N_{2}O$ on platinum catalysts, J. Catal. 224, 252-260. crossref(new window)

3.
Dabbagh, M. N., Salinas Martinez de Lecea, C., Perez- Ramirez, J., 2007, Catalytic reduction of $N_{2}O$ over steam-activated FeZSM-5 zeolite: Comparison of $CH_{4}$, CO and their mixtures as reductants with or without excess $O_{2}$, Appl. Catal. B, 70, 335-341. crossref(new window)

4.
Guzman-Vargas, A., Delahay, G., Coq, B., 2003, Catalytic decomposition of $N_{2}O$ and catalytic reduction of $N_{2}O$ and $N_{2}O$+NO by $NH_{3}$ in the presence of $O_{2}$ over Fe-zeolite, Appl. Catal. B, 42, 369-379. crossref(new window)

5.
IPCC, 2001, Climate change 2001: The scientific basis. Contribution of the working group I to the 3rd assessment report of the IPCC, Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X., Maskell, K., Johnson, C. A.(eds), Cambridge University Press, Cambridge, UK and New York, NY, USA, 1-881.

6.
Kim, M. H., 2011, Emission control technologies for $N_{2}O$ from adipic acid production plants, J. Environ. Sci., 20, 755-765

7.
Kim, M. H., 2012, Catalytic technologies for nitric acid plants $N_{2}O$ emissions control: In-duct-dependent technological options, J. Environ. Sci., 21, 113-123

8.
Kim, M. H., Ebner, J. R., Friedman, R. M., Vannice, M. A., 2001, Dissociative $N_{2}O$ adsorption on supported Pt, J. Catal., 204, 348-357. crossref(new window)

9.
Kim, M. H., Ebner, J. R., Friedman, R. M., Vannice, M. A., 2002, Determination of metal dispersion and surface composition in supported Cu-Pt catalysts, J. Catal., 208, 381-392. crossref(new window)

10.
Kim, M. H., Ham, S. W., 2010, Determination of $N_{2}O$ emissions levels in the selective reduction of NOx by $NH_{3}$ over an on-site-used commercial $V_{2}O_{5}$- $WO_{3}/TiO_{2}$ catalyst using a modified gas cell, Top. Catal., 53, 597-607. crossref(new window)

11.
Perez-Ramirez, J., Kapteijn, F., Nul, H., Mouljn, J. A., 2003, Formation and control of $N_{2}O$ in nitric acid production: Where do we stand today?, Appl. Catal. B, 44, 117-151. crossref(new window)

12.
Pringruber, G. D., Luechinger, M., Roy, P. K., Cecchetto, A., 2004, $N_{2}O$ decomposition over iron-containing zeolite prepared by different methods: A comparison of the reaction mechanism, J. Catal., 224, 429-440. crossref(new window)

13.
Ovchnnikova, E V., Chumachenko, V. A., Piryutko, L. V., Kharitonov, A. C., Noskov, A. S., 2009, Detoxication of nitric gases formed in the production of adipic acid: The two-stage catalytic cleaning process, Catal. Ind., 1, 76-84. crossref(new window)

14.
Vannice, M. A., Hasselbring, L. C., Sen, B., 1985, Direct measurements of heats of adsorption on platinum catalysts: I. $H_{2}$ on Pt dispersed on $SiO_{2}$, $Al_{2}O_{3}$, $SiO_{2}-Al_{2}O_{3}$, and $TiO_{2}$, J. Catal., 95, 57-70. crossref(new window)

15.
Yamada, K., Pophal, C., Segawa, K., 1998, Selective catalytic reduction of $N_{2}O$ by $C_{3}H_{8}$ over Fe-ZSM-5, Micropour. Mesopor. Mater., 21, 549-555. crossref(new window)

16.
Yang, W. H., Kim, M. H., 2006, Catalytic reduction of $N_{2}O$ by $H_{2}$ over well-characterized Pt surfaces, Korean J. Chem. Eng., 23, 908-918. crossref(new window)

17.
Wilson, G. R., Hall, W. K., 1970, Studies of the hydrogen held by solids: XVIII. Hydrogen and oxygen chemisorption on alumina- and zeolitesupported platinum, J. Catal., 17, 190-206. crossref(new window)