Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español es
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2024-05-21

Impact of alternative fluorinated alcohols and ethers on the environment - a laboratory and modelling study

Objetivo

Problems to be solved
Partially fluorinated alcohols, FAs, and hydrofluoroethers, HFEs, have been suggested as alter-natives for CFCs and HCFCs. To determine the environmental impact of FAs and HFEs released into the troposphere, the atmospheric lifetimes and the nature and fate of their resulting oxidation products are needed. This, in turn, requires kinetic data for their atmospheric oxidation processes, information on their degradation mechanisms, information on their infrared, ultraviolet and visible absorption cross-sections, and information on their partitioning between the vapour and the aqueous phases. The existing data for these quantities are inade-quate.
Scientific objectives and approach
The main objective of the project is to provide quality controlled laboratory data and modelling results of global warming potentials for an integrated analysis of new CFC and HCFC alternatives. To achieve the scientific objectives, the laboratory work includes measurements of OH and Cl reaction rate constants with a series of FAs and HFEs, and of selected primary oxidation products from these. The product distribution is investigated and several reaction chambers are employed in order to eliminate artefacts. The kinetics of the subsequent formation of peroxy radicals and their reactions with other peroxy radicals and NOx are also studied. An experimental set-up for measuring Henry Law constants and uptake coefficients is constructed and selected FAs, HFEs, and FA and HFE oxidation products are investigated. This provides information of their interaction with aerosols and clouds. Spectroscopic measurements in the infrared, ultraviolet and visible spectral regions provide absorption cross-sections from which estimates of the direct photo degradation process under sunlight irradiation is made. The spectroscopic data are also used for calculating radiative forcing and global warming potentials employing 2-D and 3-D chemical transport models for evaluating the atmospheric residence time of the compounds. Additional experiments using the EUPHORE reactor give "pseudo" realistic information on the tropospheric degradation mechanisms. Theoretical calculations of bond energies combined with the experimental reaction rate constants provide a structure-reactivity relationship for the FA and HFE classes of compounds. On the basis of the laboratory data and the EUPHORE experiments a general degradation scheme is developed.
Expected impacts
The project provides essential kinetic, mechanistic, physico-chemical properties and spectroscopic data for a complete analysis of the environmental fate of possible replacement compounds and thereby makes an important contribution to the integrated analysis for selection of new alternatives to CFCs and HCFCs.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..

Para utilizar esta función, debe iniciar sesión o registrarse

Programa(s)

Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.

Tema(s)

Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.

Convocatoria de propuestas

Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.

Datos no disponibles

Régimen de financiación

Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.

CSC - Cost-sharing contracts

Coordinador

UNIVERSITY OF OSLO
Aportación de la UE
Sin datos
Dirección
Blindern
0315 OSLO
Noruega

Ver en el mapa

Coste total

Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.

Sin datos

Participantes (2)

Mi folleto 0 0