Transformation et utilisation du CO2: Que peut apporter la chimie ?

Thibault Cantat (1)

1 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)

While greenhouse gases emissions are reaching alarming levels, fossil fuels still represent 80% of the world energy portfolio and 95% of our chemical commodities rely on non-renewable resources, namely hydrocarbons. In this context, utilizing CO2 as a C1 building block to produce platform chemicals as an alternative to petrochemistry has a double advantage of reusing CO2 while sparing fossil resources and avoiding CO2 emissions from their use. We have developed a strategy relying on the simultaneous use of a functionalizing reagent and a reductant that can be independently adjusted to perform the reductive functionalization of CO2 . The so-called diagonal approach will be discussed and exemplified with novel catalytic processes to convert CO2 to formamides, N-heterocycles, methylamines and methanol, using hydroboranes, hydrosilanes or formic acid as reductants. Extension of this methodology to SO2 enables the facile conversion of this gaz to sulfones, under metal-free conditions.

Domaines: Matériaux

Thibault Cantat. Transformation et utilisation du CO2: Que peut apporter la chimie ?. PhD-Day Université de Brest, Dec 2018, Brest, France. ⟨cea-02340788⟩