Adlayers of palladium particles and their aggregates on porous polypropylene hollow fiber membranes as hydrogenization contractors/reactors

article







Volkov, V.V.

Lebedeva, V.I.

Petrova, I.V.

Bobyl, A.V.

Konnikov, S.G.

Roldughin, V.I.

Erkel, J. van

Tereshchenko, G.F.
Principal approaches for the preparation of catalytic membrane reactors based on polymer membranes containing palladium nanoparticles and for the description of their characteristics are presented. The method for the development of adlayers composed of palladium nanoparticles and their aggregates on the surface of hydrophobic polypropylene porous hollow fiber membranes is proposed, and their comprehensive study is performed. Various regimes of the deposition of palladium on individual fibers and on membrane surface inside membrane modulus are considered. The sizes of primary Pd particles range from 10 to 500 nm, and dimensions of their aggregates vary from 200 nm to tens of microns. The sizes of primary particles in a free state and in their aggregates are estimated by the methods of X-ray analysis and scanning electron microscopy. The proposed approach is used for the preparation of catalytic membrane contactors/reactors for the removal of dissolved oxygen from water. In the systems under study, the limiting stage of dissolved oxygen removal is concerned with diffusion-controlled delivery of oxygen to the surface of catalytic particles. © 2010 Elsevier B.V. All rights reserved.
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Dissolved oxygenHydrogenationMembrane contactorMembrane reactorPalladium nanoparticlesPolymeric catalytic membraneAdlayersCatalytic MembraneCatalytic membrane reactorsCatalytic particlesComprehensive studiesControlled deliveryDissolved oxygen removalsFree stateHydrogenizationIndividual fibersLimiting stageMembrane contactorMembrane moduliMembrane reactorMembrane surfacePalladium nanoparticlesPalladium particlesPd particlePolymer membranePorous hollow-fiber membranesPorous polypropylene hollow fibersPrimary particlesAggregatesBioreactorsDissolutionDissolved oxygenFunctional polymersHydrogenationMembranesNanoparticlesParticle size analysisPolymersScanning electron microscopySurface diffusionThermoplasticsAgglomeration
TNO Identifier
429709
Repository link
https://resolver.tno.nl/uuid:76808d59-20cd-4932-926b-a478f0218de3
ISSN
00018686
Source
Advances in Colloid and Interface Science, 164(1-2), pp. 144-155.
Pages
144-155
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