Add time:08/24/2019         Source:sciencedirect.com

Through the study of the critical solution temperature of ionic liquids [CH3(OCH2CH2)nN+Et3][CH3SO3−] (ILPEG, n = 12, 16, 22), ILPEG-stabilized Rh nanoparticle catalysts have been found to function as thermoregulated phase-separable catalysts and have been shown to be efficient and recyclable for the selective hydrogenation of 1,5-cyclooctadiene (1,5-COD) to cyclooctene (COE). Under optimized conditions, the conversion of 1,5-COD and selectivity for COE were 99% and 90%, respectively. The Rh catalyst could be recovered by simple phase separation and reused for ten times without loss of activity or selectivity.

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