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|Title:||Fischer indole synthesis over hydrous zirconia-supported niobium oxide||Authors:||Zhong, L.
|Issue Date:||2009||Citation:||Zhong, L., Chuah, G.-K. (2009). Fischer indole synthesis over hydrous zirconia-supported niobium oxide. Australian Journal of Chemistry 62 (9) : 1027-1033. ScholarBank@NUS Repository. https://doi.org/10.1071/CH09237||Abstract:||Supported niobium oxides are investigated as green catalysts for Fischer indole reaction. By means of wet impregnation, 1040 wt-% Nb2O 5 were loaded onto hydrous zirconia as a support. Pore size distribution curves showed that the niobium oxide overlayer was uniformly dispersed onto the mesoporous support. Samples with close to a monolayer coverage of niobium oxide had the highest activity in the Fischer indole reaction of phenylhydrazine with both 3-heptanone and cyclohexanone. A coverage higher than a monolayer led to lower activity. In comparison, the supported catalysts were more active than bulk niobium oxide or a sample prepared by co-precipitation of hydrous zirconia and niobium oxide. © CSIRO 2009.||Source Title:||Australian Journal of Chemistry||URI:||http://scholarbank.nus.edu.sg/handle/10635/95464||ISSN:||00049425||DOI:||10.1071/CH09237|
|Appears in Collections:||Staff Publications|
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