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Träfflista för sökning "WFRF:(VIITANEN M) "

Search: WFRF:(VIITANEN M)

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  • Honkanen, M., et al. (author)
  • Accelerated deactivation studies of the natural-gas oxidation catalyst-Verifying the role of sulfur and elevated temperature in catalyst aging
  • 2016
  • In: Applied Catalysis B: Environmental. - : Elsevier BV. - 0926-3373 .- 1873-3883. ; 182, s. 439-448
  • Journal article (peer-reviewed)abstract
    • Accelerated deactivation, caused by thermal aging (TA) and/or sulfur + water poisoning (SW), of the PtPd/gamma-Al2O3 natural-gas oxidation catalyst was studied. Thermal aging and poisoning treatments were performed separately and with varied combinations and comprehensive characterization of the catalyst was carried out after each step. The fresh catalyst has small, oxidized PtPd particles (<5 nm) uniformly distributed in the gamma-alumina washcoat. After the SW-treatment, a small amount of bulk aluminum sulfate was observed near the slightly grown noble metal particles. During the thermal aging, gamma-alumina changed to delta-/theta- and alpha-alumina. In addition, total decomposition of oxidized Pt and partly decomposition of oxidized Pd occurred resulting in the formation of the grown noble metal particles with a bimetallic PtPd core and a polycrystalline PdO shell. Also few, small (similar to 5 nm) bimetallic PtPd particles were still detected. In the TA + SW-treated catalyst with grown noble metal particles, a small amount of bulk aluminum sulfate was detected and it was randomly distributed over the noble metal particles and washcoat. The activity in the terms of methane conversion over the TA-, SW-, and SW + TA-treated catalysts was similar but it was decreased compared to the fresh catalyst. The activity of the TA+SW-treated catalyst was drastically decreased compared to the fresh catalyst due to significant morphological changes and aluminum sulfate formation.
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  • Lundberg, C, et al. (author)
  • Dementia and driving: an attempt at consensus
  • 1997
  • In: Alzheimer disease and associated disorders. - : Ovid Technologies (Wolters Kluwer Health). - 0893-0341. ; 11:1, s. 28-37
  • Journal article (peer-reviewed)
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  • Result 1-10 of 217
Type of publication
journal article (192)
conference paper (21)
book chapter (3)
doctoral thesis (1)
Type of content
peer-reviewed (174)
other academic/artistic (43)
Author/Editor
Viitanen, M (205)
Winblad, B (75)
Fratiglioni, L (35)
Kalimo, H (26)
Lannfelt, L (24)
Rinne, JO (17)
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Poyhonen, M (16)
Guo, ZC (15)
Fastbom, J (12)
Kallio, H. (12)
Vahlberg, T (12)
Johansson, K (11)
Almkvist, O (11)
Basun, H (11)
Backman, L (9)
Amberla, K (9)
Holm-Pedersen, P (9)
Aguero-Torres, H (8)
Axelman, K (8)
Mykkanen, K (8)
Baumann, M (8)
Nagren, K (7)
Wahlund, LO (7)
Kalaria, RN (7)
von Strauss, Eva (7)
Tuisku, S (7)
Avlund, K (7)
Lilius, L (7)
Aalto, S (6)
Kivipelto, M (6)
Nordberg, A (6)
Soininen, H (6)
Behbahani, H (6)
Helin, S (6)
Viikari, L (6)
Salminen, M. (6)
Tikka, S (6)
Lehtonen, A (6)
Panahi, M (5)
Zhu, L (5)
Hardy, J (5)
Kareholt, I (5)
Tuomilehto, J. (5)
Jarvinen, R. (5)
Nissinen, A (5)
Helkala, EL (5)
Jula, A. (5)
Small, BJ (5)
Corder, EH (5)
Cornelius, C (5)
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University
Karolinska Institutet (198)
Uppsala University (17)
University of Gothenburg (7)
Red Cross University College (7)
Lund University (5)
Umeå University (2)
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Stockholm University (2)
Royal Institute of Technology (1)
Halmstad University (1)
Linköping University (1)
Jönköping University (1)
Chalmers University of Technology (1)
RISE (1)
Marie Cederschiöld högskola (1)
Swedish University of Agricultural Sciences (1)
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Language
English (216)
Swedish (1)
Research subject (UKÄ/SCB)
Medical and Health Sciences (14)
Natural sciences (4)
Social Sciences (3)
Engineering and Technology (1)

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