Characterization of Palladium Nanoparticles Adsorpt on Polyacrylic Acid Particles as Hydrogenation Catalyst

Gröschel, Lothar; Haidar, Rami; Beyer, Andreas; Reichert, Karl‐Heinz; Schomäcker, Reinhard

doi:10.1023/b:catl.0000023724.17132.16

Cited by 40 publications

(15 citation statements)

References 14 publications

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“…Thus, the surface of these Fe 3 O 4 microspheres is rich in carbonyl groups, which can chemically bind with Pd ions. 49,50 Pd ions bound with carbonyl groups could be reduced to Pd seeds, thus Pd nanoparticles could be readily deposited onto the surface of these Fe 3 O 4 microspheres by aqueous reduction.…”

Section: Surface Composition and Properties Of The Pd(x)/fe 3 O 4 Catmentioning

confidence: 99%

Highly efficient catalytic reduction of bromate in water over a quasi-monodisperse, superparamagnetic Pd/Fe3O4 catalyst

Sun

Gao

et al. 2013

J. Mater. Chem. A

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A novel quasi-monodisperse, superparamagnetic Pd/Fe 3 O 4 catalyst was synthesized for effective catalytic bromate reduction. The catalyst was prepared by dispersing nanoparticles of Pd (weight percent up to 1%) on the surface of superparamagnetic Fe 3 O 4 microspheres with 300-500 nm in diameter and 10-20 nm in grain size. Complete reduction of bromate by this Pd/Fe 3 O 4 catalyst was demonstrated within a short period (<2 h) over a range of pH values, in the presence of a variety of co-existing ions, and after multiple cycles. In addition, the superparamagnetic nature of the catalyst enhanced its good dispersion in water during water treatment when there was no external magnetic field, and its high saturation magnetization allowed an easy magnetic separation from water when an external magnetic field was applied after the water treatment. Thus, it could be easily recycled and reused, further enhancing its application potential.

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Section: Surface Composition and Properties Of The Pd(x)/fe 3 O 4 Catmentioning

confidence: 99%

Highly efficient catalytic reduction of bromate in water over a quasi-monodisperse, superparamagnetic Pd/Fe3O4 catalyst

Sun

Gao

et al. 2013

J. Mater. Chem. A

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“…Such hybrid materials prevent NP agglomeration and need no stabilizing ligands, which makes the NP more active in the catalytic reactions [9,10]. The choice of hypercrosslinked polymer matrices is limited to porous membranes based on polyacrylic acid crosslinked by a difunctional epoxide [13][14][15] and hypercrosslinked polystyrene (HPS).…”

Section: Introductionmentioning

confidence: 99%

Adsorption Processes for the Synthesis of Catalytically Active Metal Nanoparticles in Polymeric Matrices

Sulman

Tyamina

et al. 2015

Chem Eng & Technol

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The influence of the content of a hydrophilic Pd(II) compound (disodium tetrachloropalladate, Na 2 PdCl 4 ) on its adsorption and nanoparticle (NP) formation in the pores of hydrophobic micro/mesoporous hypercrosslinked polystyrene (HPS) was systematically investigated. The morphology and composition of HPS-Pd nanocomposites were studied using transmission electron microscopy, X-ray fluorescence measurements, and liquid nitrogen physisorption. The size of Pd-containing NP was found to depend on the content of the hydrophilic Pd(II) compound. Catalytic testing of these nanocomposites in the partial hydrogenation of acetylene alcohols was carried out to illustrate the influence of the NP size on the catalytic activity. The highest catalytic activity was achieved for HPS/Pd-0.1 %, forming small NP.

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“…In particular, both homogeneous and heterogeneous palladium nanoparticles have various industrial applications [13][14][15][16][17][18]. They are successfully applied to the reduction of olefinic substrates as well as in coupling reactions and also in the formation of carbon-carbon bonds [19][20][21][22][23][24][25][26][27][28][29][30][31]. Several methodologies have been developed to decorate CNTs with palladium nanoparticles such as thermal deposition [32], vapor deposition [8], electroless deposition [33,34] and chemical deposition in supercritical CO 2 solutions [35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Novel Hybrids of Tris[3-(trimethoxysilyl)propyl] Isocyanurate (TTPI) Capped Palladium Nanoparticles and Single-Walled Carbon Nanotubes

Hemraj‐Benny

Chauhan

Zhang

et al. 2011

Silicon

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The conjugation of nanoparticles to carbon nanotubes (CNTs) involves various steps including premodification of the nanotubes, which is known to be a very tedious process and sometimes leads to a mixture of products. In this regard, a direct route to generate such conjugates is a worthwhile endeavor. In this paper, we report a novel, mild, one-pot, approach to a controlled and direct coordination of Pd nanoparticles (Pd NPs) onto the surface of single walled carbon nanotubes (SWNTs), without any pre-modification of the SWNTs surface. We also present detailed characterization of the SWNT-Pd NP hybrid systems using High Resolution Transmission Electron Microscopy (HRTEM), Energy Dispersive X-ray Spectroscopy (EDS), Mid-Infrared Spectroscopy (Mid-IR) and UV-Visible Spectroscopy (UV-vis) along with the stability studies of the nanoconjugates.

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Characterization of Palladium Nanoparticles Adsorpt on Polyacrylic Acid Particles as Hydrogenation Catalyst

Cited by 40 publications

References 14 publications

Highly efficient catalytic reduction of bromate in water over a quasi-monodisperse, superparamagnetic Pd/Fe3O4 catalyst

Highly efficient catalytic reduction of bromate in water over a quasi-monodisperse, superparamagnetic Pd/Fe3O4 catalyst

Adsorption Processes for the Synthesis of Catalytically Active Metal Nanoparticles in Polymeric Matrices

Synthesis and Characterization of Novel Hybrids of Tris[3-(trimethoxysilyl)propyl] Isocyanurate (TTPI) Capped Palladium Nanoparticles and Single-Walled Carbon Nanotubes

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