• norsk
    • English
  • norsk 
    • norsk
    • English
  • Logg inn
Vis innførsel 
  •   Hjem
  • Fakultet for naturvitenskap (NV)
  • Institutt for kjemi
  • Vis innførsel
  •   Hjem
  • Fakultet for naturvitenskap (NV)
  • Institutt for kjemi
  • Vis innførsel
JavaScript is disabled for your browser. Some features of this site may not work without it.

Effect of Porosity on the Hydrothermal Stability of CuSAPO-34 for the deNOx Process

Sørli, Guro
Master thesis
Thumbnail
Åpne
14251_FULLTEXT.pdf (2.838Mb)
14251_COVER.pdf (1.556Mb)
Permanent lenke
http://hdl.handle.net/11250/2395086
Utgivelsesdato
2016
Metadata
Vis full innførsel
Samlinger
  • Institutt for kjemi [1044]
Sammendrag
Hierarchical SAPO-34 with incorporated copper was tried synthesised both through a dry gel conversion and a hydrothermal method. Crystalline copper incorporated hierarchical SAPO-34 was not obtained through these directions. However, the hydrothermal method provided crystalline SAPO-34 and the degree of uniformity concerning mesoporosity was determined by N2- physisorption (BET).

The crystalline SAPO-34 was ion exchanged with copper(II)nitrate and copper(II)tetraamine in order to determine activity for NO conversion in HC-SCR. For comparison, a conventional microporous SAPO-34 and mesoporous SBA-15 was ion exchanged as well in order to compare the effect of porosity.

XRD was used in order to confirm crystallinity, ICP-MS analyses were performed to determine copper uptake in ion exchanges. Furthermore, the activity of NO conversion was measured by a microreactor coupled to a GC-MS. Here, the conventional Cu-SAPO-34 was found to be more active than the hierarchical Cu-SAPO-34, whereas the hierarchical Cu-SAPO-34 had similar conversion as the mesoporous SBA-15. Ex Situ XAS spectroscopy was performed in order to tell differences of the local environment for copper before and after HC-SCR for the hierarchical Cu-SAPO-34. In addition, the conventional SAPO-34 and the mesoporous SBA-15 were also analysed Ex Situ pre reaction. Here, it was found that copper migrate at high temperatures and formed copper(II)oxide for the hierarchical SAPO-34.
Utgiver
NTNU

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit
 

 

Bla i

Hele arkivetDelarkiv og samlingerUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifterDenne samlingenUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifter

Min side

Logg inn

Statistikk

Besøksstatistikk

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit