Skip to content

Research at St Andrews

Fully copper-exchanged high-silica LTA zeolites as unrivaled hydrothermally stable NH3-SCR catalysts

Research output: Contribution to journalArticle

DOI

Author(s)

Taekyung Ryu, Nak Ho Ahn, Seungwan Seo, Jung Cho, Hyojun Kim, Donghui Jo, Gi Tae Park, Pyung Soon Kim, Chang Hwan Kim, Elliott L. Bruce, Paul A. Wright, In-Sik Nam, Suk Bong Hong

School/Research organisations

Abstract

Diesel engine technology is still the most effective solution to meet tighter CO2 regulations in the mobility and transport sector. In implementation of fuel-efficient diesel engines, the poor thermal durability of lean nitrogen oxides (NOx) aftertreatment systems remains as one major technical hurdle. Divalent copper ions when fully exchanged into high-silica LTA zeolites are demonstrated to exhibit excellent activity maintenance for NOx reduction with NH3 under vehicle simulated conditions even after hydrothermal aging at 900 °C, a critical temperature that the current commercial Cu-SSZ-13 catalyst cannot overcome owing to thermal deactivation. Detailed structural characterizations confirm the presence of Cu2+ ions only at the center of single 6-rings that act not only as a catalytically active center, but also as a dealumination suppressor. The overall results render the copper-exchanged LTA zeolite attractive as a viable substitute for Cu-SSZ-13.
Close

Details

Original languageEnglish
Pages (from-to)3256-3260
Number of pages5
JournalAngewandte Chemie International Edition
Volume56
Issue number12
Early online date18 Jan 2017
DOIs
StatePublished - 13 Mar 2017
Scopus citations1

    Research areas

  • Cu-LTA, Heterogeneous catalysis, Hydrothermal stability, Selective catalytic reduction, Zeolites

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Screening the effect of water vapour on gas adsorption performance: application to CO2 capture from flue gas in metal–organic frameworks

    Chanut, N., Bourrelly, S., Kuchta, B., Serre, C., Chang, J-S., Wright, P. A. & Llewellyn, P. L. 10 Apr 2017 In : CHEMSUSCHEM. 10, 7, p. 1543-1553 11 p.

    Research output: Contribution to journalArticle

  2. Porous zinc and cobalt 2-nitroimidazolate frameworks with six-membered ring windows and a layered cobalt 2-nitroimidazolate polymorph

    Orsi, A., Price, D. J., Kahr, J., Pillai, R. S., Sneddon, S., Cao, S., Benoit, V., Łozińska, M. M., Cordes, D. B., Slawin, A. M. Z., Llewellyn, P. L., Casely, I., Ashbrook, S. E. M., Maurin, G. & Wright, P. A. 14 Mar 2017 In : CrystEngComm. 19, 10, p. 1377-1388 12 p.

    Research output: Contribution to journalArticle

  3. STA-20: an ABC-6 zeotype structure prepared by co-templating and solved via a hypothetical structure database and STEM-ADF imaging

    Turrina, A., Garcia, R., Watts, A. E., Greer, H. F., Bradley, J., Zhou, W., Cox, P. A., Shannon, M. D., Mayoral, A., Casci, J. & Wright, P. A. 14 Mar 2017 In : Chemistry of Materials. 29, 5, p. 2180-2190 11 p.

    Research output: Contribution to journalArticle

  4. Impact of the metal centre and functionalization on the mechanical behaviour of MIL-53 metal–organic frameworks

    Yot, P. G., Yang, K., Guillerm, V., Ragon, F., Dmitriev, V., Parisiades, P., Elkaïm, E., Devic, T., Horcajada, P., Serre, C., Stock, N., Mowat, J. P. S., Wright, P. A., Férey, G. & Maurin, G. 27 Sep 2016 In : European Journal of Inorganic Chemistry. 2016, 27, p. 4424–4429 6 p.

    Research output: Contribution to journalArticle

  5. Cation control of molecular sieving by flexible Li-containing zeolite Rho

    Lozinska, M., Mangano, E., Greenaway, A., Fletcher, R., Thompson, S., Murray, C., Brandani, S. & Wright, P. A. 8 Sep 2016 In : Journal of Physical Chemistry C. 120, 35, p. 19652-19662 11 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Hyperconjugation is the source of helicity in perfluorinated n-alkanes

    Cormanich, R. A., O'Hagan, D. & Buehl, M. 31 May 2017 In : Angewandte Chemie International Edition. 129, 27, p. 7975-7978 4 p.

    Research output: Contribution to journalArticle

  2. A highly active manganese catalyst for enantioselective ketone and ester hydrogenation

    Widegren, M. B., Harkness, G. J., Slawin, A. M. Z., Cordes, D. B. & Clarke, M. L. 15 May 2017 In : Angewandte Chemie International Edition. 129, 21, p. 5919-5922 4 p.

    Research output: Contribution to journalArticle

  3. Room temperature regioselective catalytic hydrodefluorination of fluoroarenes with trans-[Ru(NHC)4H2] through a concerted nucleophilic Ru−H attack pathway

    Cybulski, M. K., McKay, D., Macgregor, S. A., Mahon, M. F. & Whittlesey, M. K. 1 Feb 2017 In : Angewandte Chemie International Edition. 56, 6, p. 1515-1519 5 p.

    Research output: Contribution to journalArticle

  4. Synthesis, characterization, and computational analysis of the dialanate dianion, [H3Al-AlH3]2−: a valence isoelectronic analogue of ethane

    Bonyhady, S. J., Holzmann, N., Frenking, G., Stasch, A. & Jones, C. 9 Dec 2016 In : Angewandte Chemie International Edition. Early View

    Research output: Contribution to journalArticle

ID: 248968210