This is an oxidation-reduction (redox) reaction:
C-IV - 8 e- → CIV (oxidation)
4 O0 + 8 e- → 4 O-II (reduction)
CH4 is a reducing agent, O2 is an oxidizing agent.
Reactants:
Products:

, {{plainlist| 
, Dry ice
, [CO2]
, R-744 
; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.] 