Concept

Activated carbon

Related publications (303)

High-coverage structures of carbon monoxide adsorbed on Pt(111) studied by high-pressure scanning tunneling microscopy

High-pressure scanning tunneling microscopy was used to study the room-temperature adsorption of CO on a Pt(111) single-crystal surface in equilibrium with the gas phase. The coverage was found to vary continuously, and over the entire range from 10(-6)-76 ...

2004

Carbon monoxide solubility in ionic liquids: determination, prediction and relevance to hydroformylation

Paul Joseph Dyson, Gabor Laurenczy

The solubility of carbon monoxide in 37 ionic liquids and in some organic solvents has been determined using high-pressure C-13 NMR spectroscopy; a method for predicting the CO solubility is demonstrated, and it was shown that the rate of the hydroformylat ...

2004

Palladium-catalyzed conversion of beta,gamma-unsaturated silyl sulfinates into (E)-alkenes: Asymmetric synthesis of polypropionate fragments

Pierre Vogel, Cotinica Craita, Xiaogen Huang

At low temperature, 1-alkoxy-1,3-dienes add to sulfur dioxide activated by a Lewis or protic acid generating zwitterionic intermediates that can be quenched by enoxysilanes. The resulting beta,gamma-unsaturated silyl sulfinates can be desilylated by 1:1 Pd ...

2004

Gold nanoparticles on activated carbon fibers: Role of carbon surface groups for controlling the Au-particle size and catalytic activity

Albert Renken, Philippe Buffat, Lioubov Kiwi, Elena Suvorova Buffat

Gold nanoparticles were supported on activated carbon fibers (ACF) using the aq. soln. of [Au(en)2]Cl3 via ion-exchange with surface hydroxyl groups followed by redn. in H2. The obtained catalysts were tested in CO oxidn. at room temp. Surface phenolic gro ...

2003

Mathematical modelling of the unsteady-state oxidation of nickel gauze catalysts

Albert Renken, Lioubov Kiwi

The oxidn. of nickel gauze catalysts by O2 was investigated by transient response methods. Qual. description of the exptl. transient responses have shown that the oxidn. of metallic nickel proceeds in two stages. The first step is a fast dissocn. of gaseou ...

2003

Solution versus vapor growth of dipolar layers on activated oxide substrates

Frank Nüesch, Libero Zuppiroli, Michel Carrara

Monolayer adsorption of benzoic acid derivatives on activated oxide surfaces from solution and from the vapor phase are investigated with the view of modifying the work function of a conductive substrate. Para-substituted benzoic acids with a wide range of ...

American Chemical Society2003

Energy storage and applications with supercapacitors

Philippe Barrade

Dedicated for energy storage, supercapacitors offer new solutions in various applications. This contribution describes briefly main principles of supercapacitors, basics for the design of a supercapacitive tank, and the needed power electronics development ...

2003

Comparing scrape-off layer and divertor physics in JET pure He and D discharges

Richard Pitts

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has therefore sought to address some of the important questions relat ...

2003

Structured Au/FeOx/C catalysts for low temperature CO oxidation

Albert Renken, Philippe Buffat, Lioubov Kiwi, Elena Suvorova Buffat

Innovative structured catalysts based on nanoparticles of gold supported on activated carbon fibers (ACF) in the form of woven fabrics are presented for low-temperature CO oxidation. Gold was deposited by adsorption from aqueous solution of ethylenediamine ...

2002

Gasification reactivity of charcoal with CO2. Part I: Conversion and structural phenomena

Rudolf Paul Wilhelm Jozef Struis

The gasification reaction of fir charcoal with CO2 was studied by isothermal thermogravimetric analysis under kinetic control. The derived reaction rate (r = dX/dt) as a function of the converted carbon mass (X) was compared with random pore model predicti ...

Elsevier2002

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