Papers – Page 25 – TechConnect Briefs

Nano-oxyhydride catalysts for hydrogen production from bioethanol at room temperature

H2 economy could be clean and sustainable only if it is produced from renewable sources and bioethanol obtained through biomass is a promising renewable source of hydrogen. Well tuning the preparation, formulation and conditions applied, [...]

Scalable Production of Stabilized Catalysts via Atomic Layer Deposition

Goulas A., Dokania A., Grillo F., van Limpt B., van Ommen R., van Limpt B., van Ommen R., Delft IMP, NL

We report the use of several nanostructuring concepts using Atomic Layer Deposition (ALD) that coupled with porosity induction via heat treatment resulted to controllably accessible model catalysts. This enables more active, selective and stable catalysts. [...]

Carbonaceous Materials Supported-Pd Catalysts for the Enantioselective Hydrogenation of (E)-alpha-Phenylcinnamic acid: The Influence of Support Acidity

Bui Trung T.S., Kim S., Kim Y., Kang S., Lee H., Kim S., Kim Y., Korea Advanced Institute of Science and Technology (KAIST), KR

We performed a systematically comparative study of carbonaceous materials as catalyst supports for the asymmetric heterogeneous hydrogenation of (E)-alpha-phenylcinnamic acid to study the influence of the supports on the reaction enantioselectivity. We prepared Pd-based catalysts [...]

Cavitation Disintegration of Microparticles and Nanoparticles in Dense Liquid Dispersions

Dvorsky R., Svoboda L., Trojková J., Bednář J., Mančík P., Kostura B., Vysoká škola báňská – Technická univerzita Ostrava, CZ

With the current rapid development of nanotechnology, top-down preparation of nanoparticles by various disintegration techniques became an important industrial sector. In addition to the presently common high speed bead mills working with particles in liquid [...]

Cellulose Fiber Immobilized Silver Nanoparticles and Their Applications in Catalysis, SERS and Antimicrobial Activity

Baruah B., Kennesaw State University, US

This work involves in-situ preparation of silver nanoparticles on nonwoven fibers in baby wipes (a mixture of synthetic fiber and cellulose fiber) by impregnating Ag+ ions. The Ag+ ions in the micronanopores of the fibers [...]

Effect of Big-Cube Zr2Ni on the Absorption and Desorption Kinetics of Nanocrystalline MgH2 Powders

El-Eskandarany M.S., Al-Matrouk H., Al-Duweesh A., Shaban Ehab, Kuwait Institute for Scientific Research, KISR, KW

A new hydrogen storage system of nanocomposite MgH2/10 wt.% big-cube Zr2Ni nanocrystalline powders were synthesized. A -MgH2 phase coexisted with small mole fractions of -MgH2 nanocrystalline ultrafine powders were obtained after reactive ball milling (RBM) [...]

Low Temperature Plasma Surface Treatment of Catalytic Material

Miley G.H., Srivastava S., Kim K-J, Chen G., Uiversity of Illinois and NPL Associates, US

We are developing a low temperature plasma treatment to modify the surfaces of various heterogeneous catalytic materials. The plasma modification has been shown to radically change the surface morphology of various catalytic materials including nickel, [...]

Tailoring Particle Behavior for Phase Transfer Catalysis: Recent Developments by the Center for Interfacial Reaction Engineering

Aichele C.P., Weston J., Venkataramani D., Briggs N., Crossley S., Harwell J., White J., Resasco D., Oklahoma State University, US

This presentation highlights recent advances by the Center for Interfacial Reaction Engineering (CIRE) in designing and tailoring catalytic particles for use in phase-transfer catalysis. CIRE consists of researchers across several disciplines including nanotechnology, thermodynamics, interfacial [...]

Controlled synthesis of metal@fullerene nanoarchitectures for catalysis

Leng F.Q., Axet M.R., Serp P., Universite de Toulouse UPS-INP-LCC, FR

Nanomaterials and nanostructures play a very important role for applications of nanoscience and nanotechnology in the field of fabrication, such as information and techniques, energy sources, environments, health and medical treatments. It is extremely challenging [...]

Green Fenton-like catalysts for the removal of water pollutants

Nadejde C., Neamtu M., Hodoroaba V.-D., Schneider R.J., Paul A., Ababei G., Panne U., Alexandru Ioan Cuza University, RO

Three tannic acid (TA) and dissolved natural organic matter (NOM) core-shell magnetite nanoparticles catalysts were evaluated as magnetic heterogeneous catalysts. Simple and efficient procedures for the preparation of coated magnetic nanoparticles were employed. The catalysts [...]