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- Augustsson, Ola
(creator_code:cre_t)
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A catalyst for catalytic oxidation of hydrocarbons
- 2004
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Patent (other academic/artistic)abstract
- A catalyst having resistance towards Si and/or P deactivation in catalytic oxidation of organic hydrocarbons is disclosed. The catalyst comprises a catalytically inert support, a catalytically active layer of metallic Pt and/or Pd and deposited on said catalytically active layer at least one oxide ...
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| 5. |
- Petersson, Klara, et al.
(author)
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Acoustofluidic hematocrit determination
- 2018
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In: Analytica Chimica Acta. - : Elsevier BV. - 0003-2670. ; 1000, s. 199-204
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Journal article (peer-reviewed)abstract
- Hematocrit (HCT) measurements of blood from patients, blood donors and athletes are routinely performed on a daily basis. These measurements are often performed in centralized hospital labs by whole blood analyzers, which leads to long time-to-result. On site measurements, based on centrifugation can be done, but these assays require manual handling, are slow and can just measure HCT in contrast to the central lab whole blood analyzers. In this work, we present a microfluidic based method to measure HCT in blood samples by acoustic separation of whole blood into discrete regions of plasma and red blood cells. Comparison of the areas of the red blood cell and plasma regions gives an accurate HCT value, with a linear correlation to the centrifugation-based reference method. A readout can be performed within 2 s of acoustic actuation providing a readout accuracy of approximately 3% points (pp) HCT. Additional accuracy can be achieved by extending the acoustic actuation to 20 s, yielding an error of less than 1 pp HCT. This acoustic tool is optimal for integration into a lab-on-a-chip device with in-line measurements of different clinical parameters.
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| 6. |
- Petersson, Klara, et al.
(author)
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Twenty second acoustofluidic whole blood hematocrit assay
- 2016
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In: 20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016. - 9780979806490 ; , s. 635-636
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Conference paper (peer-reviewed)abstract
- This abstract reports a novel acoustofluidic method to measure the hematocrit level of a whole blood sample within 20 seconds. The method is substantially faster than conventional centrifugation methods, has no moving parts and can be fully automated and integrated with further unit operations for analysis of blood samples at the point of care [1].
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| 8. |
- Skoglundh, Magnus, 1965, et al.
(author)
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SO2 promoted oxidation of ethyl acetate, ethanol and propane
- 2001
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In: Applied Catalysis B: Environmental. - 0926-3373 .- 1873-3883. ; 30:3-4, s. 315-328
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Journal article (peer-reviewed)abstract
- The effect of SO2 addition on the oxidation of ethyl acetate, ethanol, propane and propene, over Pt/gamma -Al2O3 and Pt/SiO2 has been investigated. The reactants (300-800 vol, ppm) were mixed with air and led through the catalyst bed. The conversions below and above light-off were recorded both in the absence and in the presence of 1-100 vol. ppm SO2. For the alumina-supported catalyst, the conversion of ethyl acetate, ethanol and propane was promoted by the addition of SO2, while the conversion of propene was inhibited. The effect of SO2 was reversible, i.e. the conversion of the reactants returned towards the initial values when SO2 was turned off. However, this recovery was quite slow. The oxidation of propane was inhibited by water, both in absence and presence of SO2. For the silica-supported catalyst no significant effect of SO2 could be observed on the conversion of ethyl acetate, ethanol or propane, whereas the conversion of propene was inhibited by the presence of SO2. In situ FTIR measurements revealed the presence of surface sulphates on the Pt/gamma -Al2O3 catalyst with and after SO2 addition. It is proposed that these sulphate groups enhance the oxidation of propane, ethyl acetate and ethanol by creating additional reaction pathways to Pt on the surface of the Pt/gamma -Al2O3 catalyst.
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| 9. |
- Skoglundh, Magnus, 1965, et al.
(author)
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SO2 promoted oxidation of hydrocarbons
- 2001
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In: 5th European Congress on Catalysis, Limerick, Ireland, September 2-7, 2001.
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Conference paper (peer-reviewed)
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