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Title: KF on γ-alumina: An efficient catalyst for the aldol condensation to pseudoionones
Authors: Raju, V.
Radhakrishnan, R.
Jaenicke, S. 
Chuah, G.K. 
Keywords: Aldol condensation
Alumina-supported KF
Base catalyst
Pseudoionone formation
Issue Date: 30-Apr-2011
Citation: Raju, V., Radhakrishnan, R., Jaenicke, S., Chuah, G.K. (2011-04-30). KF on γ-alumina: An efficient catalyst for the aldol condensation to pseudoionones. Catalysis Today 164 (1) : 139-142. ScholarBank@NUS Repository.
Abstract: KF/γ-alumina is an effective catalyst for the aldol condensation of citral with acetone. Even at a relatively low acetone/citral ratio of 1-10, the selectivity to pseudoionones was high, ranging between 82% and 97%. X-ray diffraction shows the presence of KF and K3AlF6 crystallographic phases on the supported catalyst. At KF loadings of 3-6.75 mmol g-1, a pretreatment of the catalyst by heating to 450 °C was necessary to obtain an active catalyst. However, samples with KF loadings of 8.5 mmol g-1 and higher were active even without pretreatment, facilitating handling and use of the catalysts. The development of (1 1 1) planes revealed by in situ XRD during the thermal activation process correlates with the activity for aldol condensation. © 2010 Elsevier B.V. All rights reserved.
Source Title: Catalysis Today
ISSN: 09205861
DOI: 10.1016/j.cattod.2010.10.043
Appears in Collections:Staff Publications

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