Direct Liquid-Phase Sulfonation of Methane to Methanesulfonic Acid by SO3 in the Presence of a Metal Peroxide


  • This work was supported by a grant from ATOFINA Chemicals, Inc.


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.

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