Concept

Hydrofluoric acid

Related publications (71)

Pretreatment of Douglas fir wood biomass for improving saccharification efficiencies

Edgard Gnansounou, Juan David Villegas Gomez, Simone Chiesa, Rajeev Kumar Sukumaran

The main aim of this study was to analyze dilute acid pretreatment for the Douglas fir wood in order to improve the efficiency of hydrolysis with an ultimate aim to produce bioethanol. Compositional analysis of the untreated Douglas fir biomass revealed th ...

2010

Tribocorrosion of stainless steel in sulfuric acid: Identification of corrosion-wear components and effect of contact area

Electrochemical and friction measurements during unidirectional sliding tests are used to monitor and to evaluate the tribocorrosion behavior of a passivating material. Tribocorrosion is the interplay between chemical, electrochemical, and mechanical proce ...

2010

Structuration of zero-shrinkage LTCC using mineral sacrificial materials

Peter Ryser, Thomas Maeder, Caroline Jacq, Yannick Sébastien Fournier, Wassim Hraiz

Recently, LTCC (low-temperature co-fired ceramic) technology has increasingly found applications beyond pure electronics, in fields such as microfluidics, sensors and actuators, due to the ease of shaping the tapes in the green (unfired) state. Accurate co ...

IMAPS; IEEE Service Center2009

Hydrogen storage and delivery: immobilization of a highly active homogeneous catalyst for the decomposition of formic acid to hydrogen and carbon dioxide

Paul Joseph Dyson, Gabor Laurenczy, Weijia Gan

The homogeneous catalytic system, based on water-soluble ruthenium(II)– TPPTS catalyst (TPPTS = meta-trisulfonated triphenylphosphine), selectively decomposes HCOOH into H2 and CO2 in aqueous solution. Although this reaction results in only two gas product ...

Springer Netherlands2009

Highly Enantioselective Aza Morita-Baylis-Hillman Reaction Catalyzed by Bifunctional beta -Isocupreidine Derivatives

Jieping Zhu

The aza-MBH reaction of imines, e.g., I, and beta -naphthyl acrylate in the presence of C-6' modified beta -isocupreidine deriv. (0.1 equiv) and beta -naphthol (0.1 equiv) afforded the corresponding (3S)-aza-MBH adducts, e.g., II, in high yield and excelle ...

2008

In situ observation of fluoride-ion-induced hydroxyapatite-collagen detachment on bone fracture surfaces by atomic force microscopy

Georg Fantner

The topography of freshly fractured bovine and human bone surfaces was determined by the use of atomic force microscopy (AFM). Fracture surfaces from both kinds of samples exhibited complex landscapes formed by hydroxyapatite mineral platelets with lateral ...

2007

NMR diffusion and relaxation studies of the encapsulation of fragrances by amphiphilic multiarm star block copolymers

Harm-Anton Klok, John Christopher Plummer, Céline Ternat

Self-diffusion NMR spectroscopy and relaxometry have been employed to study fragrance encapsulation in water-soluble, amphiphilic star block copolymers. Diffusion coefficients of four different fragrance molecules in the free form and in the presence of th ...

2007

Thermal conductivity contrast measurement of fused silica exposed to low-energy femtosecond laser pulses

Yves Bellouard

Femtosecond laser irradiation has various noticeable effects on fused silica. Of particular interest, pulses with energy levels below the ablation threshold can locally increase the refractive index and the material etching selectivity to hydrofluoric acid ...

American Institute of Physics2006

Integrated micro-analytical system for direct simultaneous voltammetric measurements of free metal ion concentrations in natural waters

A complexing gel integrated microelectrode (CGIME) for direct measurements of free metal ion concentrations in natural waters has been developed. It is prepared by the successive deposition of microlayers of a chelating resin, an antifouling agarose gel an ...

2006

Electrocatalytic hydrogen evolution by macrocyclic cobalt and nickel complexes

Xile Hu

A series of cobalt and nickel complexes with macrocyclic imine ligands such as difluoroboryldiglyxomime and [14]-Tetraene-N4 were synthesized for electrochem. hydrogen evolution catalysis. The complexes catalyzed the redn. of proton to dihydrogen at potent ...

2006

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