Fig. 8
From: Thermodynamic and ecological preselection of synthetic fuel intermediates from biogas at farm sites
Principle flow sheet of multi-stage synthesis of OME3-5 via methylal and trioxane, route B; see also Burger [9]. For example: line 2 with molecules H2, CO2 as educts in Eq. (8); line 5 with molecules CH3OH, H2O as products in in Eq. (8). Next example: line 8 with molecules CH3OH, O2 as educts in Eq. (9); line 9 with molecules CH2O, H2O as products in in Eq. (9)