نتایج جستجو برای: formic acid

تعداد نتایج: 747589  

2009
H. Cheng W. Yuan K. Scott

Some data in mixed-reactant fuel cells (MRFC) at Newcastle using formic acid, methanol and ethanol are reported. The importance of using a fuel tolerant selective cathode catalyst has been identified. The influence of fuel and oxidant conditions and feeding patterns has been evaluated. The cell performance using air, oxygen and hydrogen peroxide is reported. The highest peak power density of 16...

2012
M. Klatt M. Röhrig

Formic acid (HCOOH) is an important intermediate in the oxidation of unsaturated hydrocarbons in combustion processes as well as in atmospheric reactions. For example, H C O O H is the main product in the 0 3 C 2 H 4 reaction [1], It has been proposed that H C O O H is formed highly excited in the reaction of 0 2 with C H 2 [2] where its subsequent decomposition into CO and H 2 0 and radical pr...

2015
Clément Chauvier Anis Tlili Christophe Das Neves Gomes Pierre Thuéry Thibault Cantat

Formic acid is at the crossroads of novel sustainable energy strategies because it is an efficient H2 carrier. Yet, to date, its decomposition to H2 relies onmetal-based catalysts. Herein, we describe the first metal-free catalysts able to promote the dehydrogenation of formic acid. Using dialkylborane derivatives, HCOOH is decomposed to H2 and CO2 in the presence of a base with high selectivit...

2002
Gina M. Florio Timothy S. Zwier Kenneth D. Jordan Edwin L. Sibert

Carboxylic acid dimers serve as prototypical systems for modeling the unusual spectral behavior of the hydride stretch fundamental. Large anharmonic effects associated with the pair of cooperatively strengthened OH ̄OvC hydrogen bonds produces complicated infrared spectra in which the OH stretch oscillator strength is spread over hundreds of wave numbers, resulting in a complicated band sub-stru...

Journal: :Clinical chemistry 1972
D B Lakings C W Gehrke

In this fast, simple method for analysis of microgram amounts of purine and pyrimidine bases in nucleic acid hydrolysates, RNA and DNA are optimally hydrolyzed in equal volumes of trifluoroacetic acid and formic acid, heated in a closed tube at 200#{176}C for 1.5 h (for RNA) or at 150#{176}C for 2.0 h (for DNA). The trifluoroacetic acid and formic acid are evaporated from the hydrolysates on a ...

2018
Norhan Nady Sherif H. Kandil

In this work, a chitosan-gelatin-ferulic acid blend was used in different ratios for preparing novel films that can be used in biomedical applications. Both acetic and formic acid were tested as solvents for the chitosan-gelatin-ferulic acid blend. Glycerol was tested as a plasticizer. The thickness, mechanical strength, static water contact angle and water uptake of the prepared films were det...

Journal: :Chemical engineering journal advances 2021

The oxidation of acetic, glycolic, glyoxylic, oxalic and formic acid has been studied on boron doped diamond electrodes. Our voltammetry study rotating disk electrodes highlights clear differences between the carboxylic acids (formic, oxalic, glyoxylic glycolic acid) that can be oxidized via a direct electron transfer (DET) acetic which presumably solely by •OH radicals formed in region where w...

Journal: :The Biochemical journal 1986
M Dizdaroglu E Holwitt M P Hagan W F Blakely

OsO4 selectively forms thymine glycol lesions in DNA. In the past, OsO4-treated DNA has been used as a substrate in studies of DNA repair utilizing base-excision repair enzymes such as DNA glycosylases. There is, however, no information available on the chemical identity of other OsO4-induced base lesions in DNA. A complete knowledge of such DNA lesions may be of importance for repair studies. ...

Journal: :Acta Chemica Scandinavica 1965

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