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Title: Catalytic combustion of diesel soot particles on potassium and sodium titanates
Authors: Raj, K Joseph Antony
Viswanathan, B
Keywords: Catalysts
Diesel soot oxidation
Potassium titanate
Sodium titanate
Catalytic combustion
Issue Date: Sep-2010
Publisher: CSIR
Series/Report no.: Int. Cl.9 B01J21/00; C07B33/100
Abstract: Potassium and sodium titanates have been synthesized and characterized, and, the activity for oxidation of diesel soot particles evaluated by TG-DTG. The XRD patterns, DRIFT spectra and XRF data reveal the formation of sodium and potassium titanates. The formation of K<sub>2</sub>Ti<sub>2</sub>O<sub>5</sub> and Na<sub>16</sub>Ti<sub>10</sub>O<sub>28 </sub>phases are observed for K<sub>2</sub>O and Na<sub>2</sub>O loadings greater than 33 %. The BET-surface area and pore volume results show the non-porous characteristics of the materials.<span style="font-size: 11pt;" times="" new="" roman="" ,="" serif="" ;="" color:="" rgb(35,="" 31,="" 32);="" lang="EN-GB"> The soot oxidation characteristics of K and Na titanates show that the complete combustion of diesel soot can be obtained between 400 and 415 °C. Potassium and sodium titanates exhibit greater activity than the high surface area hydrated titania, showing the enhanced soot-catalyst contact characteristics of the titanates and also the ability of the catalysts to release active oxygen species. The results show that titania can be a suitable support for K and Na, particularly for the combustion of soot.</span>
Description: 1174-1181
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.49A(09) [September 2010]

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