Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 9, Issue 5, Pages 1154-1164Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cy02345j
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Funding
- DST Inspire doctoral Fellowship [IF150027]
- Ramanujan Fellowship from the Science and Engineering Research Board, Government of India [RJN-112/2012]
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This work reports the bifunctional catalytic activity of layered K-doped alpha-CrO(OH). The combined action of the redox active Cr(III) and the surface hydroxyl groups was efficiently used to carry out 2-3 oxidation reactions in tandem followed by condensation/coupling reactions in one pot. Oxidation of benzyl alcohol followed by Knoevenagel condensation or coupling reactions forming C-C and C-N linkages in one pot is demonstrated. The catalyst has been characterized using XRD, IR, TGA, CO2-TPD, cyclic voltammetry, XPS and microscopic techniques to gain insight into the nature of active sites. The role of O- and O2- on the CrO(OH) catalyst in the bifunctional activity was studied using analytical techniques. Recyclability and leaching tests confirmed that K-alpha-CrO(OH) is a stable and environmentally safe catalyst.
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