Solid-state formation of CO2 via the H2CO + O reaction M. Minissale, J.-C. Loison, S. Baouche, H. Chaabouni, E. Congiu and F. Dulieu A&A, 577 (2015) A2 Published online: 22 April 2015 DOI: 10.1051/0004-6361/201424342