Reação Ligeira Converte Dióxido de Carbono em Combustível
Autor: Decio Escobar Oliveira Ladislau | Publicado: 2017-02-25T08:00:00-03:00

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&nbsp;

Pesquisadores
da Universidade Duke desenvolveram minúsculas nanopartículas que ajudam a
converter dióxido de carbono em metano usando apenas luz ultravioleta como
fonte de energia. Tendo encontrado um catalisador que pode fazer esta química
importante usando luz ultravioleta, a equipe agora espera desenvolver uma
versão que seria executada em luz solar natural, uma potencial benção para a
energia alternativa.

Os
químicos têm procurado há muito tempo um eficiente catalisador conduzido pela
luz para impulsionar essa reação, o que poderia ajudar a reduzir os níveis
crescentes de dióxido de carbono em nossa atmosfera, convertendo-os em metano,
um componente-chave para muitos tipos de combustíveis.

Não
só as nanopartículas de ródio são mais eficientes quando iluminadas pela luz,
elas têm a vantagem de favorecer fortemente a formação de metano em vez de uma
mistura igual de metano e produtos secundários indesejáveis ​​como o monóxido
de carbono.&nbsp;Essa forte "seletividade" da catálise conduzida pela
luz também pode se estender a outras reações químicas importantes, dizem os
pesquisadores.



Fonte:
https://today.duke.edu