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IR studies of Fe modified ZSM-5 zeolites of diverse mesopore topologies in the terms of their catalytic performance in
Fe-zeolites
ZSM-5
NH3-SCR and NH3-SCO
NO sorption
IR spectroscopy
The desilication and direct synthesis route techniques were used to prepare mesostructured ZSM-5 zeo- lites. Iron was introduced to purely microporous and to hierarchical analogs by two-fold ion-exchange procedure using a Fe(NO 3 ) 3 solution. The results of the catalytic studies of the NH 3 -SCR process showed that the Fe-exchanged ZSM-5 sample prepared by direct synthesis route with amphiphilic organosilanes as a mesopore-directing agents presented the highest catalytic activity in the low temperature range comparing to the other catalyst studied. Moreover, the Fe-catalysts revealed high catalytic performance in the NH 3 -SCO process. High catalytic activity of the studied samples was related to high concentration of mononuclear Fe 3+ cations with pseudo-T d or O h coordination, guaranteed by the enhanced mesopore area of zeolite support, as well as with high acidity of the zeolite itself. The facility of the transport of the reactants to and from the active surface sites seems to be also ensured by highly developed system of mesopores. IR studies of adsorption forms both of nitrogen monoxide and ammonia as well as the products of their conversion gave insight into the NH 3 -SCR and NH 3 -SCO reaction mechanisms.
cris.lastimport.wos | 2024-04-09T18:52:55Z | |
dc.abstract.en | The desilication and direct synthesis route techniques were used to prepare mesostructured ZSM-5 zeo- lites. Iron was introduced to purely microporous and to hierarchical analogs by two-fold ion-exchange procedure using a Fe(NO 3 ) 3 solution. The results of the catalytic studies of the NH 3 -SCR process showed that the Fe-exchanged ZSM-5 sample prepared by direct synthesis route with amphiphilic organosilanes as a mesopore-directing agents presented the highest catalytic activity in the low temperature range comparing to the other catalyst studied. Moreover, the Fe-catalysts revealed high catalytic performance in the NH 3 -SCO process. High catalytic activity of the studied samples was related to high concentration of mononuclear Fe 3+ cations with pseudo-T d or O h coordination, guaranteed by the enhanced mesopore area of zeolite support, as well as with high acidity of the zeolite itself. The facility of the transport of the reactants to and from the active surface sites seems to be also ensured by highly developed system of mesopores. IR studies of adsorption forms both of nitrogen monoxide and ammonia as well as the products of their conversion gave insight into the NH 3 -SCR and NH 3 -SCO reaction mechanisms. | pl |
dc.affiliation | Wydział Chemii : Zakład Technologii Chemicznej | pl |
dc.affiliation | Wydział Chemii : Pracownia Spektrometrii w Podczerwieni | pl |
dc.affiliation | Wydział Chemii : Zakład Chemii Nieorganicznej | pl |
dc.contributor.author | Góra-Marek, Kinga - 128133 | pl |
dc.contributor.author | Brylewska, Kamila | pl |
dc.contributor.author | Tarach, Karolina - 103685 | pl |
dc.contributor.author | Rutkowska, Małgorzata - 126100 | pl |
dc.contributor.author | Jabłońska, Magdalena - 107656 | pl |
dc.contributor.author | Choi, Minkee | pl |
dc.contributor.author | Chmielarz, Lucjan - 127527 | pl |
dc.date.accessioned | 2015-12-14T11:43:49Z | |
dc.date.available | 2015-12-14T11:43:49Z | |
dc.date.issued | 2015 | pl |
dc.description.admin | [AB] Jabłońska, Magdalena 50000141 | pl |
dc.description.physical | 589-598 | pl |
dc.description.volume | 179 | pl |
dc.identifier.doi | 10.1016/j.apcatb.2015.05.053 | pl |
dc.identifier.eissn | 1873-3883 | pl |
dc.identifier.issn | 0926-3373 | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/18217 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights.licence | bez licencji | |
dc.subject.en | Fe-zeolites | pl |
dc.subject.en | ZSM-5 | pl |
dc.subject.en | NH3-SCR and NH3-SCO | pl |
dc.subject.en | NO sorption | pl |
dc.subject.en | IR spectroscopy | pl |
dc.subtype | Article | pl |
dc.title | IR studies of Fe modified ZSM-5 zeolites of diverse mesopore topologies in the terms of their catalytic performance in $NH_3$-SCR and $NH_3$-SCO processes | pl |
dc.title.journal | Applied Catalysis. B, Environmental | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |