Formation of hydrocarbons from the reduction of aqueous CO2 by zero-valent iron

Article Abstract:

A study of the reduction of aqueous CO2 by zero-valent iron showed C1-C5 hydrocarbons as products of the reduction process and as having Anderson-Schulz-Flory (ASF) product distributions. A significant carbon mass may remain sorbed to the iron surface as a direct consequence of the ASF product distribution. Iron functions as both a reactant, like water, and a catalyst in the system, based on a reaction mechanism proposed for the electroreduction of aqueous CO2 with nickel electrodes. It acts as a reactant by corroding to supply electrons and as a catalyst by promoting the formation and growth of hydrocarbon chains.

Oxidation-reduction reaction, Oxidation-reduction reactions

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Fate of a highly strained hydrocarbon in aqueous soil environment

Article Abstract:

Exo-5-norbornen-2-ol and nortrocyclyl alcohol were identified as the products in the decomposition of quadricyclane in aqueous solution and in four different natural soils. The interaction of the highly strained hydrocarbon with the environment in case of a spill is important, since the US Air Force is currently conducting evaluation of quadricyclane as a potential aviation fuel. Soil experiments undertaken for up to nine months revealed that pH was the most important factor affecting the reactivity of quadricyclane. On the other hand, organic matter content was not found to be important.

Reactivity (Chemistry)

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Chemical mixtures of fuel-rich and fuel-lean flames of CHCl3/CH4

Article Abstract:

The chemical characteristics of fuel-rich and fuel-lean flames of CHCl3/CH4 mixtures were analyzed using microprobe sampling, on-line gas chromatography and mass spectrometry. The results showed that there were significant differences in the nature of intermediaries linked to the combustion of CHCl3 and chlorinated hydrocarbons. Highly chlorinated C3 and C4 species were present in fuel-lean flames. In contrast, fuel-rich flames featured high-molecular-weight hydrocarbons.

Flame

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