Pd@Al2O3-Catalyzed Hydrogenation of Allylbenzene to Propylbenzene in Methanol and Aqueous Micellar Solutions

The palladium on alumina (Pd@Al2O3)-catalyzed hydrogenation of allylbenzene to propylbenzene was studied in methanol and aqueous micellar solutions of sodium dodecyl sulfate (SDS), decyltrimethylammonium bromide (DTAB), and t-octylphenoxypolyethoxyethanol (TX-100). Over Pd@Al2O3, propylbenzene was obtained via direct hydrogenation of allylbenzene and isomerization to ß-methylstyrene which was hydrogenated afterwards. In aqueous micellar solutions, the reaction was faster than in pure water, but slower than in methanol due to lower hydrogen solubility. In the H2O/SDS system, a higher activation energy was obtained than in methanol. For the investigated surfactants, the initial reaction rate in the micellar systems decreased in the order SDS >TX-100 >DTAB. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

• Autores: Arbeláez Pérez, Oscar Felipe; Correa L.; Parapat R.Y.; Knemeyer K.; Bustamante F.; Villa A.L.; Schwarze M.
• Tipo de recurso: Article of journal
• Fecha de publicación: 2015
• Institución: Universidad Cooperativa de Colombia
• Repositorio: Repositorio UCC
• OAI Identifier: oai:repository.ucc.edu.co:20.500.12494/41370
• Acceso en línea: https://doi.org/10.1002/ceat.201500316; https://hdl.handle.net/20.500.12494/41370
• Palabra clave: Activation energy; Alumina; Catalysis; Hydrogenation; Methanol; Micelles; Sodium dodecyl sulfate; Sodium sulfate; Surface active agents; Allylbenzene; Aqueous micellar solutions; Hydrogen solubility; Methylstyrene; Micellar systems; Palladium on alumina; Propylbenzene; Pure water; Aluminum
• Rights: closedAccess
• License: http://purl.org/coar/access_right/c_14cb