Papers – Page 60 – TechConnect Briefs

Novel Catalysis of Dendrimer: Efficient Nanocavity of Polyamine Dendrimer for Intramolecular Michael Reaction

Maeno Z., Mitsudome T., Mizugaki T., Jitsukawa K., Kaneda K., Osaka University, JP

The intramolecular Michael reaction of (E)-9-nitro-3-nonen-2-one was investigated using poly(propylene imine) dendrimers with alkyl chain on the periphery (Gx-C16, x = 3-5, x denotes the number of the generation). Gx-C16 showed higher catalytic activity than [...]

Fabrication of Nanoporous Metals by Dealloying of Ternary Alloys: Evaluation of their Electrocatalytic Properties

Vega A., Newman R.C., University of Toronto, CA

Novel nanoporous metals from ternary precursors (i.e., AgAu(Pt) alloys with a platinum content of 1, 2 and 4 at.%) have been developed by electrochemical dealloying. These structures represent a class of functional materials with intriguing [...]

Template – assisted sol – gel approach to synthesize new perspective alumina based catalysts

Vinogradov A.V., Vinogradov V.V., Vinogradov A.V., Vinogradov V.V., Agafonov A.V., Institute of Solution Chemistry of Russian Academy of Sciences, RU

In this work, high stable mesoporous γ-aluminas with different pore structure were synthesized. New kinds of templates were adapted to prepare alumina based catalysts with uniform and bimodal mesopore distribution with ‘small’ and ‘large’ mesopores. [...]

Controlled Synthesis of Subnano Pd Cluster Catalysts by Fine Tuning of Dendrimers

Mizugaki T., Kibata T., Maeno Z., Mitsudome T., Jitsukawa K., Kaneda K., Osaka University, JP

We recently succeeded in the fine control of the Pd cluster sizes in wide range using the fifth generation poly(propylene imine) (PPI) dendrimers. Preorganization of Pd ions within the PPI dendrimer with butanediamine core(G5-C4) and [...]

Peptide Nanoparticle Catalysis

Heller M.J., Cheung M., Takahashi T., University of California San Diego, US

Improved catalysis for more efficient chemical processing, biomass conversions and water oxidation-hydrogen production will be important for achieving new clean technologies. Our research work involves a novel approach to produce catalytic mechanistic properties in synthetic [...]

Novel Hierarchically Ordered Porous Vanado-Silicate Nanocomposites for the Application in Industrial Catalysis

Howard M., Whittle J., Zhang F., Zhao D., Sen T., University of Central Lancashire, UK

A novel hierarchically ordered porous vanado-silicate nanocompsoites were fabricated with isolated vanadium species with well dispersed state in the porous martrix for the oxidation of bulkier organic molecules i.e cyclooctene for the selective production of [...]

Advances (and limits) in photocatalytic building materials

Diamanti M.V., Politecnico di Milano, IT

Titanium dioxide has often been indicated as emerging technique for environment depollution, specially in urban environments. It can be easily added to building materials, such as concrete or mortar elements, or as coating to any [...]

Luminescent Terbium/Europium chelates-based Silica Nanoparticles : Stability and Incorporation Efficiency measured by Radioactive Probe

Wartenberg N., Raccurt O., Mazzanti M., Imbert D., Bourgeat-Lami E., Commissariat à l’Energie Atomique, FR

We describe an original method based on europium-chelated radioactive measurements to investigate and compare the incorporation (by a reverse microemulsion-mediated sol-gel process without covalent bond) and the stability of two different organolanthanides into silica nanoparticles. [...]

Synthesis of non-oxide ceramic powders by carbothermal reduction of a combustion synthesis precursor

Qin M., University of Science and Technology, Beijing, CN

Tis wrok introduced a novel method for sunthesizing non-oxide ceramic powders by the combination of low temperature solution combustion synthesis (LCS) and carbothermal reduction. Firstly, a homogeneous precursor consisting of fine oxide and carbon particles [...]

A Novel High Yield Process for Gold Sulfide Nanoparticle Synthesis via Shifting Equilibrium of Self-Assembly Reaction

Patel D., James K., Zhang G., Gobin A.M., University of Louisville, US

This project is focused on the scale up of gold-gold sulfide (GGS) nanoparticles with desired near infrared peak (nIR) that can be used for therapeutic applications. By combining published methods for 1-step self-assembly of GGS [...]