This is an oxidation-reduction (redox) reaction:
6 CIV + 24 e- → 6 C0 (reduction)
12 O-II - 24 e- → 12 O0 (oxidation)
Reactants:

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