Fig. 9From: Thermodynamic and ecological preselection of synthetic fuel intermediates from biogas at farm sitesPrinciple flow sheet of multi-stage synthesis of 2-ethylhexanol via aldol condensation from butanol as reported by Schemme et al. [75]. For example: line 14 with molecule C2H5OH as educt in Eq. (20); line 15 with molecules H2, C2H4O, as products in in Eq. (20)Back to article page