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Keywords:

  • alkaline earth metals;
  • C-H activation;
  • methane activation;
  • peroxides;
  • sulfonation

Activation of methane by metal peroxides: Calcium peroxide serves as an effective radical initiator in the liquid-phase sulfonation of methane to methansulfonic acid (MSA) by SO3 [Eq. (1)]. Under the best reaction conditions a 91 % conversion of SO3 to MSA was achieved.

  • equation image