Mohd Hasnain Sayed, Bhalchandra M. Bhanage, Radha V. Jayaram
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Pickering Assisted Catalysis for Selective Synthesis of Benzalacetones
Pickering emulsions belong to the class of dispersion systems of two immiscible liquids stabilized by solid particles. The stability of such emulsions is affected by several parameters such as the method of emulsification, oil–water ratio, size, shape and amount of solid particles. In this study, rod-shaped MgO particles were prepared and characterized by XRD, FE-SEM, HR-TEM, DLS and CO2-TPD techniques. The as-prepared MgO particles were utilized in the Pickering-assisted catalytic system for the condensation of acetone with benzaldehyde and its derivatives. The compartmentalization of benzalacetone within oil droplets prevented further condensation resulting in high selectivity. The effect of the amount of MgO particles and various oil phases on the catalytic activity was studied. The synthetic utility of the system is demonstrated for gram-scale synthesis. The MgO-stabilized Pickering emulsion catalytic system was found to be reusable for at least five reaction cycles without any considerable loss in catalytic activity.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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