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 o...

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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
Idioma:
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
Description
Summary: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.