Browsing NTNU Open by Author "Mathisen, Karina"

Introduction of Cobalt Into Silica Aerogels, Metal Speciation and Reducibility

Håbrekke, Sondre (Master thesis, 2017)

Hydrophobic and amorphous silica aerogels with incorporated cobalt(II) in single-site was tried synthesized through the newly developed method of using sodium silicate as the silica precursor and achieving hydrophobicity ...

Introduction of rhenium into porous supports

Tafjord, Joakim (Master thesis, 2017)

This thesis is concerned with the synthesis of porous catalysts containing metallic rhenium nanoparticles. The goals of this work were to evaluate alternative introduction methods to the currently employed incipient wetness, ...

Introduction of rhenium to surface modified microporous and mesoporous materials.

Gaustad, Stian Kjønniksen (Master thesis, 2020)

Et utvalg av ulike mikro- og mesopørse bærermaterialer var syntetisert og modifisert med en organosilan for å introdusere en aminopropylgruppe på innsiden av de porøse materialene. Den introduserte aminopropylgruppen var ...

Investigating synthesis strategies for materials SAPO-40, AlPO-40 and CuAlPO-40

Haraldsen, Anders Granli (Master thesis, 2019)

Målet med denne oppgaven var å undersøke syntesestrategier for fremstilling av materialene SAPO-40, AlPO-40 og CuAlPO-40, materialer i AFR zeotyp systemet. På grunn av materialenes unike poresystem, potensiale for høyt ...

Ionothermal Synthesis of Conventional and Hierarchical SAPO-11 and Framework Incorporation of Iron

de Alwis, Kudachchige Asanga Geethanjana (Master thesis, 2021)

This project focuses on the ionothermal synthesis and characterization of conventional and hierarchical SAPO-11 and the incorporation of iron into the SAPO-11 framework. Conventional SAPO-11 was synthesized by following ...

Iridium-based Electrocatalysts for the Oxygen Evolution Reaction

Reksten, Anita (Doctoral thesis at NTNU;2016:226, Doctoral thesis, 2016)

English version: This thesis covers several topics related to the anodic catalyst for the oxygen evolution reaction (OER) in polymer electrolyte membrane (PEM) water electrolysis. Water electrolysis is considered one ...

Korleis ulike typar aerogel kan brukast til å fjerne olje frå havet

Ertesvåg, Ragnhild Lea (Bachelor thesis, 2020)

Ei rekkje forsøk har blitt utført opp igjennom tidene for å finne den beste metoden for fjerning av olje frå havet. Metodene som har blitt nytta kan klassifiserast som biologiske, kjemiske og fysiske metodar.[1] Nokre av ...

Nickel incorporated silica aerogels for the catalytic hydration of carbon dioxide.

Heistad, Gjermund (Master thesis, 2023)

Denne oppgaven investigerer potensialet for å inkorporere nikkel i en silika aerogel atomisk og om en slik katalysator vil være aktiv for hydrering av karbondioksid. For å oppnå dette ble det brukt en optimalisert medforløper ...

NOx Storage reduction on copper and barium containing micro- and mesoporous materials

Yttervik, Johan Hatling (Master thesis, 2013)

NOx storage reduction (NSR) has been pointed out as a possible solution to meet the stringent emission ceilings for NOx. The NOx storage reduction catalyst is designed to work under cyclic conditions, alternating between ...

Oxygenate conversion over protonated zeolites.

van der Wijst, Cornelis Gerardus (Master thesis, 2013)

In this thesis, a number of commercial zeolites and a silicalite have been characterised using transmission FT-IR in a vacuum cell. The samples were then investigated in situ by DRIFTS during methanol conversion at 350oC, ...

Pinpointing basic sites formed upon incorporation of iron in hierarchical SAPO-11 using catalytic model reactions

Ali, Daniel; Li, Zhihui; Azim, Muhammad Mohsin; Lein, Hilde Lea; Mathisen, Karina (Peer reviewed; Journal article, 2022)

By utilizing previously established catalytic model reactions, a method for probing the topological location of transition metal sites incorporated in hierarchical silicoaluminophosphates (SAPOs) is presented. For the first ...

Pore Characteristics and Acid Properties of Hierarchical SAPO-34

Ali, Daniel (Master thesis, 2015)

This thesis investigates the pore connectivity and acid properties of the hierarchical SAPO 34 molecular sieve. The hierarchical version of the SAPO 34 molecular sieve was synthesized using the dry gel conversion as ...

SAPO-34 with Copper: Investigation of hierarchical pore characteristics and interactions with copper for catalytic applications

Jakobsen, Trygve Dagsloth (Master thesis, 2014)

Hierarchical SAPO-34 was produced using the dry gel conversion method, where an amorphous, mesoporous silicoaluminophosphate was subjected to steam treatment with the presence of organic template. This resulted in a ...