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Studies of Al2O3–K catalysts prepared using various precursors for diesel soot elimination
- Source :
-
Thermochimica Acta . Feb2008, Vol. 468 Issue 1/2, p15-20. 6p. - Publication Year :
- 2008
-
Abstract
- Abstract: The optimal calcination temperature was 600°C and the highest activities were obtained at Al:K molar ratios of 3:1, 1:1 and 1:1 for Al2O3/KNO3, Al(NO3)3/KNO3 and Al2O3/KOH precursor combinations, respectively. The active compound in the catalyst prepared by Al(NO3)3/KNO3 was KNO3 exclusively. However, the catalytic activity of the catalysts prepared by Al2O3/KOH was affected by the formation of K2Al2O4 and K2CO3 compounds. The catalysts prepared by all precursor combinations behaved a comparable thermal stability. High temperature aging of the catalysts would result in the loss of surface area and/or active compounds, and hence the deterioration of their catalytic activities. [Copyright &y& Elsevier]
- Subjects :
- *CHEMICAL inhibitors
*DUST
*CATALYSTS
*CATALYSIS
Subjects
Details
- Language :
- English
- ISSN :
- 00406031
- Volume :
- 468
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Thermochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 29958456
- Full Text :
- https://doi.org/10.1016/j.tca.2007.11.015