Projekt

In situ Raman spectroscopy on electrocatalytic NOx removal

Udbyder

Vejleder

Sted

København og omegn

Challenge: NOx is an air pollutant harmful to both human health and environment, for which reason NOx emissions must be lowered. A major source of NOx emissions is vehicles, and especially for diesel vehicles there is a challenge in removing NOx efficiently from the exhaust. Electrochemical reduction of NOx is a novel technology for NOx removal from diesel exhaust. This technology is based on NOx reduction in a ceramic, electrochemical cell. However, a major challenge in the development of this technology is to achieve a sufficiently high selectivity towards NOx conversion on the electrodes.

Idea: Addition of NOx storage compounds (e.g. BaO/Ba(NO3)2 or K2O/KNO3) to the electrodes has been proven to increase the NOx conversion. This is believed to some extent to be due to NOx getting stored as nitrate on the electrode surface prior to the electrochemical reduction. Still, experimental evidence of the NOx storage process on the ceramic electrodes is missing. Raman spectroscopy is a method which can be used to investigate the NOx storage and conversion process in situ, i.e. at realistic conditions with respect to temperature, gas composition and electrical potential. The application of in situ Raman spectroscopy will provide new insight regarding the NOx storage and conversion processes, which will be crucial for the further development of this technology

Student task: This project is mainly experimental. You will prepare electrodes for electrochemical NOx reduction including adding a NOx storage compound to the electrodes by infiltration. In our new Raman lab you will conduct in situ experiments, in which you monitor changes in both the ceramic electrodes and the adsorbed gaseous species during the NOx conversion. In addition to this the electrodes before and after test will be characterized by for instance electron microscopy.

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Kontakt

Virksomhed/organisation

DTU Energi

Navn

Marie Lund Traulsen

Stilling

Adjunkt

Mail

matr@dtu.dk

Vejleder-info

Bachelor i Kemi og Teknologi

Vejleder

Marie Lund Traulsen

Medvejledere

Kent Kammer Hansen

ECTS-point

15 - 30

Type

Bachelorprojekt, Kandidatspeciale

Bachelor i Fysik og Nanoteknologi

Vejleder

Marie Lund Traulsen

Medvejledere

Kent Kammer Hansen

ECTS-point

15 - 30

Type

Bachelorprojekt, Kandidatspeciale

Kandidatuddannelsen i Anvendt Kemi

Vejleder

Marie Lund Traulsen

Medvejledere

Kent Kammer Hansen

ECTS-point

15 - 30

Type

Bachelorprojekt, Kandidatspeciale

Kandidatuddannelsen i Fysik og Nanoteknologi

Vejleder

Marie Lund Traulsen

Medvejledere

Kent Kammer Hansen

ECTS-point

15 - 30

Type

Bachelorprojekt, Kandidatspeciale

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

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Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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