An Atmospheric Origin for HCN-Derived Polymers on Titan - Primitive chemistry in planetary atmospheres: From the upper atmosphere down to the surface Accéder directement au contenu
Article Dans Une Revue Processes Année : 2021

An Atmospheric Origin for HCN-Derived Polymers on Titan

Zoé Perrin
  • Fonction : Auteur
  • PersonId : 1101234
Nathalie Carrasco
Audrey Chatain
Lora Jovanovic
Guy Cernogora
  • Fonction : Auteur
  • PersonId : 968719


Titan’s haze is strongly suspected to be an HCN-derived polymer, but despite the first in situ measurements by the ESA-Huygens space probe, its chemical composition and formation process remain largely unknown. To investigate this question, we simulated the atmospheric haze formation process, experimentally. We synthesized analogues of Titan’s haze, named Titan tholins, in an irradiated N2–CH4 gas mixture, mimicking Titan’s upper atmosphere chemistry. HCN was monitored in situ in the gas phase simultaneously with the formation and evolution of the haze particles. We show that HCN is produced as long as the particles are absent, and is then progressively consumed when the particles appear and grow. This work highlights HCN as an effective precursor of Titan’s haze and confirms the HCN-derived polymer nature of the haze.
Fichier principal
Vignette du fichier
processes-09-00965.pdf (2.42 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03250687 , version 1 (04-06-2021)





Zoé Perrin, Nathalie Carrasco, Audrey Chatain, Lora Jovanovic, Ludovic Vettier, et al.. An Atmospheric Origin for HCN-Derived Polymers on Titan. Processes, 2021, 9, pp.965. ⟨10.3390/pr9060965⟩. ⟨insu-03250687⟩
161 Consultations
77 Téléchargements



Gmail Facebook Twitter LinkedIn More