Carbon Nanotubes and Related Carbonaceous Structures

Su, Dang Sheng

doi:10.1002/9783527656875.ch9

Cited by 9 publications

(1 citation statement)

References 225 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, heterogeneous metal nanoparticles have attracted considerable attention as they have been found to be highly efficient and selective catalysts for a wide range of organic transformations . It has been demonstrated that the selectivity and reactivity exhibited by the nanoparticles are dependent on the size and shape of the particles as well as the type of support to which the particles are attached. , Many different supports have been used for catalytic applications such as metal oxides, metal organic frameworks (MOFs), carbon-based polymers, and silicas . Within the last group mentioned, siliceous mesocelluar foam (MCF) has shown to be an excellent material for supporting metal nanoparticles, enzymes, and various heterogeneous complexes .…”

Section: Introductionmentioning

confidence: 99%

Chemoenzymatic Dynamic Kinetic Resolution of Primary Amines Using a Recyclable Palladium Nanoparticle Catalyst Together with Lipases

et al. 2014

View full text Add to dashboard Cite

Abstract.A catalyst consisting of palladium nanoparticles supported on amino-functionalized siliceous mesocellular foam (Pd-AmP-MCF) was used in chemoenzymatic dynamic kinetic resolution (DKR) to convert primary amines to amides in high yields and excellent ee's. The efficiency of the nanocatalyst at temperatures below 70 °C enables reaction conditions that are more suitable for enzymes. In the present study this is exemplified by subjecting 1-phenylethylamine (1a) and analogous benzylic amines to DKR reactions using two commercially available lipases, Novozyme-435 (Candida antartica Lipase B) and Amano Lipase PS-C1 (lipase from Burkholderia cepacia) as biocatalysts. The latter enzyme has not previously been used in the DKR of amines, due to its low stability at temperatures over 60 °C. The viability of the heterogeneous Pd-AmP-MCF was further demonstrated in a recycling study, which shows that the catalyst can be reused up to five times.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemoenzymatic Dynamic Kinetic Resolution of Primary Amines Using a Recyclable Palladium Nanoparticle Catalyst Together with Lipases

et al. 2014

View full text Add to dashboard Cite

show abstract

Confinement of Metal Nanoparticles in Carbon Nanotubes

Nguyen

Serp

2013

ChemCatChem

View full text Add to dashboard Cite

The effect of several parameters that include carbon nanotube (CNT) pretreatment and diameter, and the nature of the metal (Co, Ru, Pd), the metal precursor (nitrate, chloride, organometallic complexes), and the solvent on the filling yield of metallic nanoparticles in CNT channels is reported. The obtained results show that it is possible to modulate the filling yield between 10 and 80 % by controlling the CNT opening and playing on the molecular recognition of the inner/outer surfaces by the metal molecular precursor. Interestingly, the best filling yields have been obtained on nitric acid oxidized nanotubes; a treatment often used for the preparation of most CNT‐supported metal catalysts. The confined nanoparticles systematically show a smaller particle size than those supported on the external surface. All the prepared samples were tested for the selective hydrogenation of cinnamaldehyde, and clear correlations were established between the catalytic performances and the filling yields.

show abstract