Matches in UGent Biblio for { <https://biblio.ugent.be/publication/4246850#aggregation> ?p ?o. }
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- aggregation classification "A1".
- aggregation creator B731299.
- aggregation creator B731300.
- aggregation creator B731301.
- aggregation creator B731302.
- aggregation creator B731303.
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- aggregation date "2014".
- aggregation format "application/pdf".
- aggregation hasFormat 4246850.bibtex.
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- aggregation isPartOf urn:issn:1463-9076.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Chemistry".
- aggregation title "Determining the storage, availability and reactivity of NH3 within Cu-Chabazite-based Ammonia Selective Catalytic Reduction systems".
- aggregation abstract "Three different types of NH3 species can be simultaneously present on Cu2+-exchanged CHA-type zeolites, commonly used in Ammonia Selective Catalytic Reduction (NH3-SCR) systems. These include ammonium ions (NH4+), formed on the Bronsted acid sites, [Cu(NH3)(4)](2+) complexes, resulting from NH3 coordination with the Cu2+ Lewis sites, and NH3 adsorbed on extra-framework Al ( EFAl) species, in contrast to the only two reacting NH3 species recently reported on Cu-SSZ-13 zeolite. The NH4+ ions react very slowly in comparison to NH3 coordinated to Cu2+ ions and are likely to contribute little to the standard NH3-SCR process, with the Bronsted groups acting primarily as NH3 storage sites. The availability/ reactivity of NH4+ ions can be however, notably improved by submitting the zeolite to repeated exchanges with Cu2+, accompanied by a remarkable enhancement in the low temperature activity. Moreover, the presence of EFAl species could also have a positive influence on the reaction rate of the available NH4+ ions. These results have important implications for NH3 storage and availability in Cu-Chabazite-based NH3-SCR systems.".
- aggregation authorList BK1097140.
- aggregation endPage "1650".
- aggregation issue "4".
- aggregation startPage "1639".
- aggregation volume "16".
- aggregation aggregates 5754801.
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