Title
Adlayers of palladium particles and their aggregates on porous polypropylene hollow fiber membranes as hydrogenization contractors/reactors
Author
Volkov, V.V.
Lebedeva, V.I.
Petrova, I.V.
Bobyl, A.V.
Konnikov, S.G.
Roldughin, V.I.
van Erkel, J.
Tereshchenko, G.F.
Publication year
2011
Abstract
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.
Subject
Earth & Environment
WT - Water Treatment
EELS - Earth, Environmental and Life Sciences
Environment
Dissolved oxygen
Hydrogenation
Membrane contactor
Membrane reactor
Palladium nanoparticles
Polymeric catalytic membrane
Adlayers
Catalytic Membrane
Catalytic membrane reactors
Catalytic particles
Comprehensive studies
Controlled delivery
Dissolved oxygen removals
Free state
Hydrogenization
Individual fibers
Limiting stage
Membrane contactor
Membrane moduli
Membrane reactor
Membrane surface
Palladium nanoparticles
Palladium particles
Pd particle
Polymer membrane
Porous hollow-fiber membranes
Porous polypropylene hollow fibers
Primary particles
Aggregates
Bioreactors
Dissolution
Dissolved oxygen
Functional polymers
Hydrogenation
Membranes
Nanoparticles
Particle size analysis
Polymers
Scanning electron microscopy
Surface diffusion
Thermoplastics
Agglomeration
To reference this document use:
http://resolver.tudelft.nl/uuid:76808d59-20cd-4932-926b-a478f0218de3
TNO identifier
429709
ISSN
0001-8686
Source
Advances in Colloid and Interface Science, 164 (1-2), 144-155
Document type
article